diff --git a/.gitignore b/.gitignore
index 23eca7e42dd..e34ebb93518 100644
--- a/.gitignore
+++ b/.gitignore
@@ -14,6 +14,8 @@
 /lotus-pcr
 /lotus-wallet
 /lotus-keygen
+/docgen-md
+/docgen-openrpc
 /bench.json
 /lotuspond/front/node_modules
 /lotuspond/front/build
diff --git a/Makefile b/Makefile
index abc01385a87..8cd77090686 100644
--- a/Makefile
+++ b/Makefile
@@ -327,10 +327,32 @@ method-gen:
 
 gen: type-gen method-gen
 
-docsgen:
-	go run ./api/docgen "api/api_full.go" "FullNode" > documentation/en/api-methods.md
-	go run ./api/docgen "api/api_storage.go" "StorageMiner" > documentation/en/api-methods-miner.md
-	go run ./api/docgen "api/api_worker.go" "WorkerAPI" > documentation/en/api-methods-worker.md
+docsgen: docsgen-md docsgen-openrpc
+
+docsgen-md-bin:
+	go build $(GOFLAGS) -o docgen-md ./api/docgen/cmd
+docsgen-openrpc-bin:
+	go build $(GOFLAGS) -o docgen-openrpc ./api/docgen-openrpc/cmd
+
+docsgen-md: docsgen-md-full docsgen-md-storage docsgen-md-worker
+
+docsgen-md-full: docsgen-md-bin
+	./docgen-md "api/api_full.go" "FullNode" > documentation/en/api-methods.md
+docsgen-md-storage: docsgen-md-bin
+	./docgen-md "api/api_storage.go" "StorageMiner" > documentation/en/api-methods-miner.md
+docsgen-md-worker: docsgen-md-bin
+	./docgen-md "api/api_worker.go" "WorkerAPI" > documentation/en/api-methods-worker.md
+
+docsgen-openrpc: docsgen-openrpc-full docsgen-openrpc-storage docsgen-openrpc-worker
+
+docsgen-openrpc-full: docsgen-openrpc-bin
+	./docgen-openrpc "api/api_full.go" "FullNode" -gzip > build/openrpc/full.json.gz
+docsgen-openrpc-storage: docsgen-openrpc-bin
+	./docgen-openrpc "api/api_storage.go" "StorageMiner" -gzip > build/openrpc/miner.json.gz
+docsgen-openrpc-worker: docsgen-openrpc-bin
+	./docgen-openrpc "api/api_worker.go" "WorkerAPI" -gzip > build/openrpc/worker.json.gz
+
+.PHONY: docsgen docsgen-md-bin docsgen-openrpc-bin
 
 print-%:
 	@echo $*=$($*)
diff --git a/api/api_common.go b/api/api_common.go
index fc89f11cd98..a0726528d88 100644
--- a/api/api_common.go
+++ b/api/api_common.go
@@ -11,6 +11,8 @@ import (
 	"github.com/libp2p/go-libp2p-core/network"
 	"github.com/libp2p/go-libp2p-core/peer"
 	protocol "github.com/libp2p/go-libp2p-core/protocol"
+
+	apitypes "github.com/filecoin-project/lotus/api/types"
 )
 
 type Common interface {
@@ -52,6 +54,9 @@ type Common interface {
 
 	// MethodGroup: Common
 
+	// Discover returns an OpenRPC document describing an RPC API.
+	Discover(ctx context.Context) (apitypes.OpenRPCDocument, error)
+
 	// ID returns peerID of libp2p node backing this API
 	ID(context.Context) (peer.ID, error)
 
diff --git a/api/api_test.go b/api/api_test.go
index 34c47f432c5..e4010a47198 100644
--- a/api/api_test.go
+++ b/api/api_test.go
@@ -37,6 +37,18 @@ func TestDoesntDependOnFFI(t *testing.T) {
 	}
 }
 
+func TestDoesntDependOnBuild(t *testing.T) {
+	deps, err := exec.Command(goCmd(), "list", "-deps", "github.com/filecoin-project/lotus/api").Output()
+	if err != nil {
+		t.Fatal(err)
+	}
+	for _, pkg := range strings.Fields(string(deps)) {
+		if pkg == "github.com/filecoin-project/build" {
+			t.Fatal("api depends on filecoin-ffi")
+		}
+	}
+}
+
 func TestReturnTypes(t *testing.T) {
 	errType := reflect.TypeOf(new(error)).Elem()
 	bareIface := reflect.TypeOf(new(interface{})).Elem()
diff --git a/api/apistruct/struct.go b/api/apistruct/struct.go
index 34b18cd4198..56ead4b1072 100644
--- a/api/apistruct/struct.go
+++ b/api/apistruct/struct.go
@@ -5,6 +5,8 @@ import (
 	"io"
 	"time"
 
+	"github.com/filecoin-project/go-address"
+	"github.com/filecoin-project/go-bitfield"
 	"github.com/google/uuid"
 	"github.com/ipfs/go-cid"
 	metrics "github.com/libp2p/go-libp2p-core/metrics"
@@ -12,8 +14,6 @@ import (
 	"github.com/libp2p/go-libp2p-core/peer"
 	protocol "github.com/libp2p/go-libp2p-core/protocol"
 
-	"github.com/filecoin-project/go-address"
-	"github.com/filecoin-project/go-bitfield"
 	datatransfer "github.com/filecoin-project/go-data-transfer"
 	"github.com/filecoin-project/go-fil-markets/piecestore"
 	"github.com/filecoin-project/go-fil-markets/retrievalmarket"
@@ -33,6 +33,7 @@ import (
 	"github.com/filecoin-project/specs-storage/storage"
 
 	"github.com/filecoin-project/lotus/api"
+	apitypes "github.com/filecoin-project/lotus/api/types"
 	"github.com/filecoin-project/lotus/chain/actors/builtin/miner"
 	"github.com/filecoin-project/lotus/chain/actors/builtin/paych"
 	"github.com/filecoin-project/lotus/chain/types"
@@ -63,6 +64,7 @@ type CommonStruct struct {
 		NetBlockAdd                 func(ctx context.Context, acl api.NetBlockList) error            `perm:"admin"`
 		NetBlockRemove              func(ctx context.Context, acl api.NetBlockList) error            `perm:"admin"`
 		NetBlockList                func(ctx context.Context) (api.NetBlockList, error)              `perm:"read"`
+		Discover                    func(ctx context.Context) (map[string]interface{}, error)        `perm:"read"`
 
 		ID      func(context.Context) (peer.ID, error)        `perm:"read"`
 		Version func(context.Context) (api.APIVersion, error) `perm:"read"`
@@ -382,6 +384,8 @@ type StorageMinerStruct struct {
 		CreateBackup func(ctx context.Context, fpath string) error `perm:"admin"`
 
 		CheckProvable func(ctx context.Context, pp abi.RegisteredPoStProof, sectors []storage.SectorRef, expensive bool) (map[abi.SectorNumber]string, error) `perm:"admin"`
+
+		Discover func(ctx context.Context) (apitypes.OpenRPCDocument, error) `perm:"read"`
 	}
 }
 
@@ -420,6 +424,8 @@ type WorkerStruct struct {
 
 		ProcessSession func(context.Context) (uuid.UUID, error) `perm:"admin"`
 		Session        func(context.Context) (uuid.UUID, error) `perm:"admin"`
+
+		Discover func(ctx context.Context) (apitypes.OpenRPCDocument, error) `perm:"read"`
 	}
 }
 
@@ -544,6 +550,10 @@ func (c *CommonStruct) NetPeerInfo(ctx context.Context, p peer.ID) (*api.Extende
 	return c.Internal.NetPeerInfo(ctx, p)
 }
 
+func (c *CommonStruct) Discover(ctx context.Context) (apitypes.OpenRPCDocument, error) {
+	return c.Internal.Discover(ctx)
+}
+
 // ID implements API.ID
 func (c *CommonStruct) ID(ctx context.Context) (peer.ID, error) {
 	return c.Internal.ID(ctx)
@@ -1612,6 +1622,10 @@ func (c *StorageMinerStruct) CheckProvable(ctx context.Context, pp abi.Registere
 	return c.Internal.CheckProvable(ctx, pp, sectors, expensive)
 }
 
+func (c *StorageMinerStruct) Discover(ctx context.Context) (apitypes.OpenRPCDocument, error) {
+	return c.Internal.Discover(ctx)
+}
+
 // WorkerStruct
 
 func (w *WorkerStruct) Version(ctx context.Context) (api.Version, error) {
@@ -1710,6 +1724,10 @@ func (w *WorkerStruct) Session(ctx context.Context) (uuid.UUID, error) {
 	return w.Internal.Session(ctx)
 }
 
+func (c *WorkerStruct) Discover(ctx context.Context) (apitypes.OpenRPCDocument, error) {
+	return c.Internal.Discover(ctx)
+}
+
 func (g GatewayStruct) ChainGetBlockMessages(ctx context.Context, c cid.Cid) (*api.BlockMessages, error) {
 	return g.Internal.ChainGetBlockMessages(ctx, c)
 }
diff --git a/api/docgen-openrpc/cmd/docgen_openrpc.go b/api/docgen-openrpc/cmd/docgen_openrpc.go
new file mode 100644
index 00000000000..a1a039b4031
--- /dev/null
+++ b/api/docgen-openrpc/cmd/docgen_openrpc.go
@@ -0,0 +1,77 @@
+package main
+
+import (
+	"compress/gzip"
+	"encoding/json"
+	"io"
+	"log"
+	"os"
+
+	"github.com/filecoin-project/lotus/api/apistruct"
+	docgen_openrpc "github.com/filecoin-project/lotus/api/docgen-openrpc"
+)
+
+/*
+main defines a small program that writes an OpenRPC document describing
+a Lotus API to stdout.
+
+If the first argument is "miner", the document will describe the StorageMiner API.
+If not (no, or any other args), the document will describe the Full API.
+
+Use:
+
+		go run ./api/openrpc/cmd ["api/api_full.go"|"api/api_storage.go"|"api/api_worker.go"] ["FullNode"|"StorageMiner"|"WorkerAPI"]
+
+	With gzip compression: a '-gzip' flag is made available as an optional third argument. Note that position matters.
+
+		go run ./api/openrpc/cmd ["api/api_full.go"|"api/api_storage.go"|"api/api_worker.go"] ["FullNode"|"StorageMiner"|"WorkerAPI"] -gzip
+
+*/
+
+func main() {
+	doc := docgen_openrpc.NewLotusOpenRPCDocument()
+
+	switch os.Args[2] {
+	case "FullNode":
+		doc.RegisterReceiverName("Filecoin", &apistruct.FullNodeStruct{})
+	case "StorageMiner":
+		doc.RegisterReceiverName("Filecoin", &apistruct.StorageMinerStruct{})
+	case "WorkerAPI":
+		doc.RegisterReceiverName("Filecoin", &apistruct.WorkerStruct{})
+	}
+
+	out, err := doc.Discover()
+	if err != nil {
+		log.Fatalln(err)
+	}
+
+	var jsonOut []byte
+	var writer io.WriteCloser
+
+	// Use os.Args to handle a somewhat hacky flag for the gzip option.
+	// Could use flags package to handle this more cleanly, but that requires changes elsewhere
+	// the scope of which just isn't warranted by this one use case which will usually be run
+	// programmatically anyways.
+	if len(os.Args) > 3 && os.Args[3] == "-gzip" {
+		jsonOut, err = json.Marshal(out)
+		if err != nil {
+			log.Fatalln(err)
+		}
+		writer = gzip.NewWriter(os.Stdout)
+	} else {
+		jsonOut, err = json.MarshalIndent(out, "", "    ")
+		if err != nil {
+			log.Fatalln(err)
+		}
+		writer = os.Stdout
+	}
+
+	_, err = writer.Write(jsonOut)
+	if err != nil {
+		log.Fatalln(err)
+	}
+	err = writer.Close()
+	if err != nil {
+		log.Fatalln(err)
+	}
+}
diff --git a/api/docgen-openrpc/openrpc.go b/api/docgen-openrpc/openrpc.go
new file mode 100644
index 00000000000..507ad3cb113
--- /dev/null
+++ b/api/docgen-openrpc/openrpc.go
@@ -0,0 +1,172 @@
+package docgenopenrpc
+
+import (
+	"encoding/json"
+	"go/ast"
+	"net"
+	"os"
+	"reflect"
+
+	"github.com/alecthomas/jsonschema"
+	go_openrpc_reflect "github.com/etclabscore/go-openrpc-reflect"
+	"github.com/filecoin-project/lotus/api/docgen"
+	"github.com/filecoin-project/lotus/build"
+	"github.com/ipfs/go-cid"
+	meta_schema "github.com/open-rpc/meta-schema"
+)
+
+// Comments holds API method comments collected by AST parsing.
+var Comments map[string]string
+
+// GroupDocs holds documentation for documentation groups.
+var GroupDocs map[string]string
+
+func init() {
+	Comments, GroupDocs = docgen.ParseApiASTInfo(os.Args[1], os.Args[2])
+}
+
+// schemaDictEntry represents a type association passed to the jsonschema reflector.
+type schemaDictEntry struct {
+	example interface{}
+	rawJson string
+}
+
+const integerD = `{
+          "title": "number",
+          "type": "number",
+          "description": "Number is a number"
+        }`
+
+const cidCidD = `{"title": "Content Identifier", "type": "string", "description": "Cid represents a self-describing content addressed identifier. It is formed by a Version, a Codec (which indicates a multicodec-packed content type) and a Multihash."}`
+
+func OpenRPCSchemaTypeMapper(ty reflect.Type) *jsonschema.Type {
+	unmarshalJSONToJSONSchemaType := func(input string) *jsonschema.Type {
+		var js jsonschema.Type
+		err := json.Unmarshal([]byte(input), &js)
+		if err != nil {
+			panic(err)
+		}
+		return &js
+	}
+
+	if ty.Kind() == reflect.Ptr {
+		ty = ty.Elem()
+	}
+
+	if ty == reflect.TypeOf((*interface{})(nil)).Elem() {
+		return &jsonschema.Type{Type: "object", AdditionalProperties: []byte("true")}
+	}
+
+	// Second, handle other types.
+	// Use a slice instead of a map because it preserves order, as a logic safeguard/fallback.
+	dict := []schemaDictEntry{
+		{cid.Cid{}, cidCidD},
+	}
+
+	for _, d := range dict {
+		if reflect.TypeOf(d.example) == ty {
+			tt := unmarshalJSONToJSONSchemaType(d.rawJson)
+
+			return tt
+		}
+	}
+
+	// Handle primitive types in case there are generic cases
+	// specific to our services.
+	switch ty.Kind() {
+	case reflect.Int, reflect.Int8, reflect.Int16, reflect.Int32, reflect.Int64, reflect.Uint, reflect.Uint8, reflect.Uint16, reflect.Uint32, reflect.Uint64:
+		// Return all integer types as the hex representation integer schemea.
+		ret := unmarshalJSONToJSONSchemaType(integerD)
+		return ret
+	case reflect.Uintptr:
+		return &jsonschema.Type{Type: "number", Title: "uintptr-title"}
+	case reflect.Struct:
+	case reflect.Map:
+	case reflect.Slice, reflect.Array:
+	case reflect.Float32, reflect.Float64:
+	case reflect.Bool:
+	case reflect.String:
+	case reflect.Ptr, reflect.Interface:
+	default:
+	}
+
+	return nil
+}
+
+// NewLotusOpenRPCDocument defines application-specific documentation and configuration for its OpenRPC document.
+func NewLotusOpenRPCDocument() *go_openrpc_reflect.Document {
+	d := &go_openrpc_reflect.Document{}
+
+	// Register "Meta" document fields.
+	// These include getters for
+	// - Servers object
+	// - Info object
+	// - ExternalDocs object
+	//
+	// These objects represent server-specific data that cannot be
+	// reflected.
+	d.WithMeta(&go_openrpc_reflect.MetaT{
+		GetServersFn: func() func(listeners []net.Listener) (*meta_schema.Servers, error) {
+			return func(listeners []net.Listener) (*meta_schema.Servers, error) {
+				return nil, nil
+			}
+		},
+		GetInfoFn: func() (info *meta_schema.InfoObject) {
+			info = &meta_schema.InfoObject{}
+			title := "Lotus RPC API"
+			info.Title = (*meta_schema.InfoObjectProperties)(&title)
+
+			version := build.BuildVersion
+			info.Version = (*meta_schema.InfoObjectVersion)(&version)
+			return info
+		},
+		GetExternalDocsFn: func() (exdocs *meta_schema.ExternalDocumentationObject) {
+			return nil // FIXME
+		},
+	})
+
+	// Use a provided Ethereum default configuration as a base.
+	appReflector := &go_openrpc_reflect.EthereumReflectorT{}
+
+	// Install overrides for the json schema->type map fn used by the jsonschema reflect package.
+	appReflector.FnSchemaTypeMap = func() func(ty reflect.Type) *jsonschema.Type {
+		return OpenRPCSchemaTypeMapper
+	}
+
+	appReflector.FnIsMethodEligible = func(m reflect.Method) bool {
+		for i := 0; i < m.Func.Type().NumOut(); i++ {
+			if m.Func.Type().Out(i).Kind() == reflect.Chan {
+				return false
+			}
+		}
+		return go_openrpc_reflect.EthereumReflector.IsMethodEligible(m)
+	}
+	appReflector.FnGetMethodName = func(moduleName string, r reflect.Value, m reflect.Method, funcDecl *ast.FuncDecl) (string, error) {
+		if m.Name == "ID" {
+			return moduleName + "_ID", nil
+		}
+		if moduleName == "rpc" && m.Name == "Discover" {
+			return "rpc.discover", nil
+		}
+
+		return moduleName + "." + m.Name, nil
+	}
+
+	appReflector.FnGetMethodSummary = func(r reflect.Value, m reflect.Method, funcDecl *ast.FuncDecl) (string, error) {
+		if v, ok := Comments[m.Name]; ok {
+			return v, nil
+		}
+		return "", nil // noComment
+	}
+
+	appReflector.FnSchemaExamples = func(ty reflect.Type) (examples *meta_schema.Examples, err error) {
+		v := docgen.ExampleValue("unknown", ty, ty) // This isn't ideal, but seems to work well enough.
+		return &meta_schema.Examples{
+			meta_schema.AlwaysTrue(v),
+		}, nil
+	}
+
+	// Finally, register the configured reflector to the document.
+	d.WithReflector(appReflector)
+	return d
+}
diff --git a/api/docgen/cmd/docgen.go b/api/docgen/cmd/docgen.go
new file mode 100644
index 00000000000..e4c415015c1
--- /dev/null
+++ b/api/docgen/cmd/docgen.go
@@ -0,0 +1,137 @@
+package main
+
+import (
+	"encoding/json"
+	"fmt"
+	"os"
+	"reflect"
+	"sort"
+	"strings"
+
+	"github.com/filecoin-project/lotus/api"
+	"github.com/filecoin-project/lotus/api/apistruct"
+	"github.com/filecoin-project/lotus/api/docgen"
+)
+
+func main() {
+	comments, groupComments := docgen.ParseApiASTInfo(os.Args[1], os.Args[2])
+
+	groups := make(map[string]*docgen.MethodGroup)
+
+	var t reflect.Type
+	var permStruct, commonPermStruct reflect.Type
+
+	switch os.Args[2] {
+	case "FullNode":
+		t = reflect.TypeOf(new(struct{ api.FullNode })).Elem()
+		permStruct = reflect.TypeOf(apistruct.FullNodeStruct{}.Internal)
+		commonPermStruct = reflect.TypeOf(apistruct.CommonStruct{}.Internal)
+	case "StorageMiner":
+		t = reflect.TypeOf(new(struct{ api.StorageMiner })).Elem()
+		permStruct = reflect.TypeOf(apistruct.StorageMinerStruct{}.Internal)
+		commonPermStruct = reflect.TypeOf(apistruct.CommonStruct{}.Internal)
+	case "WorkerAPI":
+		t = reflect.TypeOf(new(struct{ api.WorkerAPI })).Elem()
+		permStruct = reflect.TypeOf(apistruct.WorkerStruct{}.Internal)
+		commonPermStruct = reflect.TypeOf(apistruct.WorkerStruct{}.Internal)
+	default:
+		panic("unknown type")
+	}
+
+	for i := 0; i < t.NumMethod(); i++ {
+		m := t.Method(i)
+
+		groupName := docgen.MethodGroupFromName(m.Name)
+
+		g, ok := groups[groupName]
+		if !ok {
+			g = new(docgen.MethodGroup)
+			g.Header = groupComments[groupName]
+			g.GroupName = groupName
+			groups[groupName] = g
+		}
+
+		var args []interface{}
+		ft := m.Func.Type()
+		for j := 2; j < ft.NumIn(); j++ {
+			inp := ft.In(j)
+			args = append(args, docgen.ExampleValue(m.Name, inp, nil))
+		}
+
+		v, err := json.MarshalIndent(args, "", "  ")
+		if err != nil {
+			panic(err)
+		}
+
+		outv := docgen.ExampleValue(m.Name, ft.Out(0), nil)
+
+		ov, err := json.MarshalIndent(outv, "", "  ")
+		if err != nil {
+			panic(err)
+		}
+
+		g.Methods = append(g.Methods, &docgen.Method{
+			Name:            m.Name,
+			Comment:         comments[m.Name],
+			InputExample:    string(v),
+			ResponseExample: string(ov),
+		})
+	}
+
+	var groupslice []*docgen.MethodGroup
+	for _, g := range groups {
+		groupslice = append(groupslice, g)
+	}
+
+	sort.Slice(groupslice, func(i, j int) bool {
+		return groupslice[i].GroupName < groupslice[j].GroupName
+	})
+
+	fmt.Printf("# Groups\n")
+
+	for _, g := range groupslice {
+		fmt.Printf("* [%s](#%s)\n", g.GroupName, g.GroupName)
+		for _, method := range g.Methods {
+			fmt.Printf("  * [%s](#%s)\n", method.Name, method.Name)
+		}
+	}
+
+	for _, g := range groupslice {
+		g := g
+		fmt.Printf("## %s\n", g.GroupName)
+		fmt.Printf("%s\n\n", g.Header)
+
+		sort.Slice(g.Methods, func(i, j int) bool {
+			return g.Methods[i].Name < g.Methods[j].Name
+		})
+
+		for _, m := range g.Methods {
+			fmt.Printf("### %s\n", m.Name)
+			fmt.Printf("%s\n\n", m.Comment)
+
+			meth, ok := permStruct.FieldByName(m.Name)
+			if !ok {
+				meth, ok = commonPermStruct.FieldByName(m.Name)
+				if !ok {
+					panic("no perms for method: " + m.Name)
+				}
+			}
+
+			perms := meth.Tag.Get("perm")
+
+			fmt.Printf("Perms: %s\n\n", perms)
+
+			if strings.Count(m.InputExample, "\n") > 0 {
+				fmt.Printf("Inputs:\n```json\n%s\n```\n\n", m.InputExample)
+			} else {
+				fmt.Printf("Inputs: `%s`\n\n", m.InputExample)
+			}
+
+			if strings.Count(m.ResponseExample, "\n") > 0 {
+				fmt.Printf("Response:\n```json\n%s\n```\n\n", m.ResponseExample)
+			} else {
+				fmt.Printf("Response: `%s`\n\n", m.ResponseExample)
+			}
+		}
+	}
+}
diff --git a/api/docgen/docgen.go b/api/docgen/docgen.go
index 7b6a2725b0f..23caa3a8fe9 100644
--- a/api/docgen/docgen.go
+++ b/api/docgen/docgen.go
@@ -1,18 +1,18 @@
-package main
+package docgen
 
 import (
-	"encoding/json"
 	"fmt"
 	"go/ast"
 	"go/parser"
 	"go/token"
-	"os"
+	"path/filepath"
 	"reflect"
-	"sort"
 	"strings"
 	"time"
 	"unicode"
 
+	"github.com/filecoin-project/go-address"
+	"github.com/filecoin-project/go-bitfield"
 	"github.com/google/uuid"
 	"github.com/ipfs/go-cid"
 	"github.com/ipfs/go-filestore"
@@ -23,8 +23,6 @@ import (
 	pubsub "github.com/libp2p/go-libp2p-pubsub"
 	"github.com/multiformats/go-multiaddr"
 
-	"github.com/filecoin-project/go-address"
-	"github.com/filecoin-project/go-bitfield"
 	datatransfer "github.com/filecoin-project/go-data-transfer"
 	filestore2 "github.com/filecoin-project/go-fil-markets/filestore"
 	"github.com/filecoin-project/go-fil-markets/retrievalmarket"
@@ -36,7 +34,7 @@ import (
 	"github.com/filecoin-project/go-state-types/exitcode"
 
 	"github.com/filecoin-project/lotus/api"
-	"github.com/filecoin-project/lotus/api/apistruct"
+	apitypes "github.com/filecoin-project/lotus/api/types"
 	"github.com/filecoin-project/lotus/build"
 	"github.com/filecoin-project/lotus/chain/types"
 	"github.com/filecoin-project/lotus/extern/sector-storage/sealtasks"
@@ -89,6 +87,8 @@ func init() {
 	addExample(pid)
 	addExample(&pid)
 
+	multistoreIDExample := multistore.StoreID(50)
+
 	addExample(bitfield.NewFromSet([]uint64{5}))
 	addExample(abi.RegisteredSealProof_StackedDrg32GiBV1_1)
 	addExample(abi.RegisteredPoStProof_StackedDrgWindow32GiBV1)
@@ -118,7 +118,8 @@ func init() {
 	addExample(time.Minute)
 	addExample(datatransfer.TransferID(3))
 	addExample(datatransfer.Ongoing)
-	addExample(multistore.StoreID(50))
+	addExample(multistoreIDExample)
+	addExample(&multistoreIDExample)
 	addExample(retrievalmarket.ClientEventDealAccepted)
 	addExample(retrievalmarket.DealStatusNew)
 	addExample(network.ReachabilityPublic)
@@ -126,17 +127,17 @@ func init() {
 	addExample(map[string]int{"name": 42})
 	addExample(map[string]time.Time{"name": time.Unix(1615243938, 0).UTC()})
 	addExample(&types.ExecutionTrace{
-		Msg:    exampleValue("init", reflect.TypeOf(&types.Message{}), nil).(*types.Message),
-		MsgRct: exampleValue("init", reflect.TypeOf(&types.MessageReceipt{}), nil).(*types.MessageReceipt),
+		Msg:    ExampleValue("init", reflect.TypeOf(&types.Message{}), nil).(*types.Message),
+		MsgRct: ExampleValue("init", reflect.TypeOf(&types.MessageReceipt{}), nil).(*types.MessageReceipt),
 	})
 	addExample(map[string]types.Actor{
-		"t01236": exampleValue("init", reflect.TypeOf(types.Actor{}), nil).(types.Actor),
+		"t01236": ExampleValue("init", reflect.TypeOf(types.Actor{}), nil).(types.Actor),
 	})
 	addExample(map[string]api.MarketDeal{
-		"t026363": exampleValue("init", reflect.TypeOf(api.MarketDeal{}), nil).(api.MarketDeal),
+		"t026363": ExampleValue("init", reflect.TypeOf(api.MarketDeal{}), nil).(api.MarketDeal),
 	})
 	addExample(map[string]api.MarketBalance{
-		"t026363": exampleValue("init", reflect.TypeOf(api.MarketBalance{}), nil).(api.MarketBalance),
+		"t026363": ExampleValue("init", reflect.TypeOf(api.MarketBalance{}), nil).(api.MarketBalance),
 	})
 	addExample(map[string]*pubsub.TopicScoreSnapshot{
 		"/blocks": {
@@ -251,9 +252,17 @@ func init() {
 		sealtasks.TTPreCommit2: {},
 	})
 	addExample(sealtasks.TTCommit2)
+	addExample(apitypes.OpenRPCDocument{
+		"openrpc": "1.2.6",
+		"info": map[string]interface{}{
+			"title":   "Lotus RPC API",
+			"version": "1.2.1/generated=2020-11-22T08:22:42-06:00",
+		},
+		"methods": []interface{}{}},
+	)
 }
 
-func exampleValue(method string, t, parent reflect.Type) interface{} {
+func ExampleValue(method string, t, parent reflect.Type) interface{} {
 	v, ok := ExampleValues[t]
 	if ok {
 		return v
@@ -262,10 +271,10 @@ func exampleValue(method string, t, parent reflect.Type) interface{} {
 	switch t.Kind() {
 	case reflect.Slice:
 		out := reflect.New(t).Elem()
-		reflect.Append(out, reflect.ValueOf(exampleValue(method, t.Elem(), t)))
+		reflect.Append(out, reflect.ValueOf(ExampleValue(method, t.Elem(), t)))
 		return out.Interface()
 	case reflect.Chan:
-		return exampleValue(method, t.Elem(), nil)
+		return ExampleValue(method, t.Elem(), nil)
 	case reflect.Struct:
 		es := exampleStruct(method, t, parent)
 		v := reflect.ValueOf(es).Elem().Interface()
@@ -274,7 +283,7 @@ func exampleValue(method string, t, parent reflect.Type) interface{} {
 	case reflect.Array:
 		out := reflect.New(t).Elem()
 		for i := 0; i < t.Len(); i++ {
-			out.Index(i).Set(reflect.ValueOf(exampleValue(method, t.Elem(), t)))
+			out.Index(i).Set(reflect.ValueOf(ExampleValue(method, t.Elem(), t)))
 		}
 		return out.Interface()
 
@@ -299,7 +308,7 @@ func exampleStruct(method string, t, parent reflect.Type) interface{} {
 			continue
 		}
 		if strings.Title(f.Name) == f.Name {
-			ns.Elem().Field(i).Set(reflect.ValueOf(exampleValue(method, f.Type, t)))
+			ns.Elem().Field(i).Set(reflect.ValueOf(ExampleValue(method, f.Type, t)))
 		}
 	}
 
@@ -331,13 +340,24 @@ func (v *Visitor) Visit(node ast.Node) ast.Visitor {
 	return v
 }
 
-const noComment = "There are not yet any comments for this method."
+const NoComment = "There are not yet any comments for this method."
 
-func parseApiASTInfo(apiFile, iface string) (map[string]string, map[string]string) { //nolint:golint
+func ParseApiASTInfo(apiFile, iface string) (comments map[string]string, groupDocs map[string]string) { //nolint:golint
 	fset := token.NewFileSet()
-	pkgs, err := parser.ParseDir(fset, "./api", nil, parser.AllErrors|parser.ParseComments)
+	apiDir, err := filepath.Abs("./api")
+	if err != nil {
+		fmt.Println("./api filepath absolute error: ", err)
+		return
+	}
+	apiFile, err = filepath.Abs(apiFile)
+	if err != nil {
+		fmt.Println("filepath absolute error: ", err, "file:", apiFile)
+		return
+	}
+	pkgs, err := parser.ParseDir(fset, apiDir, nil, parser.AllErrors|parser.ParseComments)
 	if err != nil {
 		fmt.Println("parse error: ", err)
+		return
 	}
 
 	ap := pkgs["api"]
@@ -349,14 +369,14 @@ func parseApiASTInfo(apiFile, iface string) (map[string]string, map[string]strin
 	v := &Visitor{iface, make(map[string]ast.Node)}
 	ast.Walk(v, pkgs["api"])
 
-	groupDocs := make(map[string]string)
-	out := make(map[string]string)
+	comments = make(map[string]string)
+	groupDocs = make(map[string]string)
 	for mn, node := range v.Methods {
-		cs := cmap.Filter(node).Comments()
-		if len(cs) == 0 {
-			out[mn] = noComment
+		filteredComments := cmap.Filter(node).Comments()
+		if len(filteredComments) == 0 {
+			comments[mn] = NoComment
 		} else {
-			for _, c := range cs {
+			for _, c := range filteredComments {
 				if strings.HasPrefix(c.Text(), "MethodGroup:") {
 					parts := strings.Split(c.Text(), "\n")
 					groupName := strings.TrimSpace(parts[0][12:])
@@ -367,15 +387,15 @@ func parseApiASTInfo(apiFile, iface string) (map[string]string, map[string]strin
 				}
 			}
 
-			last := cs[len(cs)-1].Text()
+			last := filteredComments[len(filteredComments)-1].Text()
 			if !strings.HasPrefix(last, "MethodGroup:") {
-				out[mn] = last
+				comments[mn] = last
 			} else {
-				out[mn] = noComment
+				comments[mn] = NoComment
 			}
 		}
 	}
-	return out, groupDocs
+	return comments, groupDocs
 }
 
 type MethodGroup struct {
@@ -391,7 +411,7 @@ type Method struct {
 	ResponseExample string
 }
 
-func methodGroupFromName(mn string) string {
+func MethodGroupFromName(mn string) string {
 	i := strings.IndexFunc(mn[1:], func(r rune) bool {
 		return unicode.IsUpper(r)
 	})
@@ -400,126 +420,3 @@ func methodGroupFromName(mn string) string {
 	}
 	return mn[:i+1]
 }
-
-func main() {
-	comments, groupComments := parseApiASTInfo(os.Args[1], os.Args[2])
-
-	groups := make(map[string]*MethodGroup)
-
-	var t reflect.Type
-	var permStruct, commonPermStruct reflect.Type
-
-	switch os.Args[2] {
-	case "FullNode":
-		t = reflect.TypeOf(new(struct{ api.FullNode })).Elem()
-		permStruct = reflect.TypeOf(apistruct.FullNodeStruct{}.Internal)
-		commonPermStruct = reflect.TypeOf(apistruct.CommonStruct{}.Internal)
-	case "StorageMiner":
-		t = reflect.TypeOf(new(struct{ api.StorageMiner })).Elem()
-		permStruct = reflect.TypeOf(apistruct.StorageMinerStruct{}.Internal)
-		commonPermStruct = reflect.TypeOf(apistruct.CommonStruct{}.Internal)
-	case "WorkerAPI":
-		t = reflect.TypeOf(new(struct{ api.WorkerAPI })).Elem()
-		permStruct = reflect.TypeOf(apistruct.WorkerStruct{}.Internal)
-		commonPermStruct = reflect.TypeOf(apistruct.WorkerStruct{}.Internal)
-	default:
-		panic("unknown type")
-	}
-
-	for i := 0; i < t.NumMethod(); i++ {
-		m := t.Method(i)
-
-		groupName := methodGroupFromName(m.Name)
-
-		g, ok := groups[groupName]
-		if !ok {
-			g = new(MethodGroup)
-			g.Header = groupComments[groupName]
-			g.GroupName = groupName
-			groups[groupName] = g
-		}
-
-		var args []interface{}
-		ft := m.Func.Type()
-		for j := 2; j < ft.NumIn(); j++ {
-			inp := ft.In(j)
-			args = append(args, exampleValue(m.Name, inp, nil))
-		}
-
-		v, err := json.MarshalIndent(args, "", "  ")
-		if err != nil {
-			panic(err)
-		}
-
-		outv := exampleValue(m.Name, ft.Out(0), nil)
-
-		ov, err := json.MarshalIndent(outv, "", "  ")
-		if err != nil {
-			panic(err)
-		}
-
-		g.Methods = append(g.Methods, &Method{
-			Name:            m.Name,
-			Comment:         comments[m.Name],
-			InputExample:    string(v),
-			ResponseExample: string(ov),
-		})
-	}
-
-	var groupslice []*MethodGroup
-	for _, g := range groups {
-		groupslice = append(groupslice, g)
-	}
-
-	sort.Slice(groupslice, func(i, j int) bool {
-		return groupslice[i].GroupName < groupslice[j].GroupName
-	})
-
-	fmt.Printf("# Groups\n")
-
-	for _, g := range groupslice {
-		fmt.Printf("* [%s](#%s)\n", g.GroupName, g.GroupName)
-		for _, method := range g.Methods {
-			fmt.Printf("  * [%s](#%s)\n", method.Name, method.Name)
-		}
-	}
-
-	for _, g := range groupslice {
-		g := g
-		fmt.Printf("## %s\n", g.GroupName)
-		fmt.Printf("%s\n\n", g.Header)
-
-		sort.Slice(g.Methods, func(i, j int) bool {
-			return g.Methods[i].Name < g.Methods[j].Name
-		})
-
-		for _, m := range g.Methods {
-			fmt.Printf("### %s\n", m.Name)
-			fmt.Printf("%s\n\n", m.Comment)
-
-			meth, ok := permStruct.FieldByName(m.Name)
-			if !ok {
-				meth, ok = commonPermStruct.FieldByName(m.Name)
-				if !ok {
-					panic("no perms for method: " + m.Name)
-				}
-			}
-
-			perms := meth.Tag.Get("perm")
-
-			fmt.Printf("Perms: %s\n\n", perms)
-
-			if strings.Count(m.InputExample, "\n") > 0 {
-				fmt.Printf("Inputs:\n```json\n%s\n```\n\n", m.InputExample)
-			} else {
-				fmt.Printf("Inputs: `%s`\n\n", m.InputExample)
-			}
-
-			if strings.Count(m.ResponseExample, "\n") > 0 {
-				fmt.Printf("Response:\n```json\n%s\n```\n\n", m.ResponseExample)
-			} else {
-				fmt.Printf("Response: `%s`\n\n", m.ResponseExample)
-			}
-		}
-	}
-}
diff --git a/api/mocks/mock_full.go b/api/mocks/mock_full.go
index 0b76c784dcd..8fd646d9abe 100644
--- a/api/mocks/mock_full.go
+++ b/api/mocks/mock_full.go
@@ -18,6 +18,7 @@ import (
 	dline "github.com/filecoin-project/go-state-types/dline"
 	network "github.com/filecoin-project/go-state-types/network"
 	api "github.com/filecoin-project/lotus/api"
+	apitypes "github.com/filecoin-project/lotus/api/types"
 	miner "github.com/filecoin-project/lotus/chain/actors/builtin/miner"
 	types "github.com/filecoin-project/lotus/chain/types"
 	marketevents "github.com/filecoin-project/lotus/markets/loggers"
@@ -783,6 +784,21 @@ func (mr *MockFullNodeMockRecorder) CreateBackup(arg0, arg1 interface{}) *gomock
 	return mr.mock.ctrl.RecordCallWithMethodType(mr.mock, "CreateBackup", reflect.TypeOf((*MockFullNode)(nil).CreateBackup), arg0, arg1)
 }
 
+// Discover mocks base method
+func (m *MockFullNode) Discover(arg0 context.Context) (apitypes.OpenRPCDocument, error) {
+	m.ctrl.T.Helper()
+	ret := m.ctrl.Call(m, "Discover", arg0)
+	ret0, _ := ret[0].(apitypes.OpenRPCDocument)
+	ret1, _ := ret[1].(error)
+	return ret0, ret1
+}
+
+// Discover indicates an expected call of Discover
+func (mr *MockFullNodeMockRecorder) Discover(arg0 interface{}) *gomock.Call {
+	mr.mock.ctrl.T.Helper()
+	return mr.mock.ctrl.RecordCallWithMethodType(mr.mock, "Discover", reflect.TypeOf((*MockFullNode)(nil).Discover), arg0)
+}
+
 // GasEstimateFeeCap mocks base method
 func (m *MockFullNode) GasEstimateFeeCap(arg0 context.Context, arg1 *types.Message, arg2 int64, arg3 types.TipSetKey) (big.Int, error) {
 	m.ctrl.T.Helper()
diff --git a/api/types/openrpc.go b/api/types/openrpc.go
new file mode 100644
index 00000000000..7d65cbde63c
--- /dev/null
+++ b/api/types/openrpc.go
@@ -0,0 +1,3 @@
+package apitypes
+
+type OpenRPCDocument map[string]interface{}
diff --git a/build/openrpc.go b/build/openrpc.go
new file mode 100644
index 00000000000..0f514c8aac5
--- /dev/null
+++ b/build/openrpc.go
@@ -0,0 +1,43 @@
+package build
+
+import (
+	"bytes"
+	"compress/gzip"
+	"encoding/json"
+
+	rice "github.com/GeertJohan/go.rice"
+
+	apitypes "github.com/filecoin-project/lotus/api/types"
+)
+
+func mustReadGzippedOpenRPCDocument(data []byte) apitypes.OpenRPCDocument {
+	zr, err := gzip.NewReader(bytes.NewBuffer(data))
+	if err != nil {
+		log.Fatal(err)
+	}
+	m := apitypes.OpenRPCDocument{}
+	err = json.NewDecoder(zr).Decode(&m)
+	if err != nil {
+		log.Fatal(err)
+	}
+	err = zr.Close()
+	if err != nil {
+		log.Fatal(err)
+	}
+	return m
+}
+
+func OpenRPCDiscoverJSON_Full() apitypes.OpenRPCDocument {
+	data := rice.MustFindBox("openrpc").MustBytes("full.json.gz")
+	return mustReadGzippedOpenRPCDocument(data)
+}
+
+func OpenRPCDiscoverJSON_Miner() apitypes.OpenRPCDocument {
+	data := rice.MustFindBox("openrpc").MustBytes("miner.json.gz")
+	return mustReadGzippedOpenRPCDocument(data)
+}
+
+func OpenRPCDiscoverJSON_Worker() apitypes.OpenRPCDocument {
+	data := rice.MustFindBox("openrpc").MustBytes("worker.json.gz")
+	return mustReadGzippedOpenRPCDocument(data)
+}
diff --git a/build/openrpc/full.json.gz b/build/openrpc/full.json.gz
new file mode 100644
index 00000000000..bd38746b0f8
Binary files /dev/null and b/build/openrpc/full.json.gz differ
diff --git a/build/openrpc/miner.json.gz b/build/openrpc/miner.json.gz
new file mode 100644
index 00000000000..23501e9118a
Binary files /dev/null and b/build/openrpc/miner.json.gz differ
diff --git a/build/openrpc/worker.json.gz b/build/openrpc/worker.json.gz
new file mode 100644
index 00000000000..338118859e3
Binary files /dev/null and b/build/openrpc/worker.json.gz differ
diff --git a/build/openrpc_test.go b/build/openrpc_test.go
new file mode 100644
index 00000000000..20c77533193
--- /dev/null
+++ b/build/openrpc_test.go
@@ -0,0 +1,23 @@
+package build
+
+import (
+	"testing"
+
+	apitypes "github.com/filecoin-project/lotus/api/types"
+)
+
+func TestOpenRPCDiscoverJSON_Version(t *testing.T) {
+	// openRPCDocVersion is the current OpenRPC version of the API docs.
+	openRPCDocVersion := "1.2.6"
+
+	for i, docFn := range []func() apitypes.OpenRPCDocument{
+		OpenRPCDiscoverJSON_Full,
+		OpenRPCDiscoverJSON_Miner,
+		OpenRPCDiscoverJSON_Worker,
+	} {
+		doc := docFn()
+		if got, ok := doc["openrpc"]; !ok || got != openRPCDocVersion {
+			t.Fatalf("case: %d, want: %s, got: %v, doc: %v", i, openRPCDocVersion, got, doc)
+		}
+	}
+}
diff --git a/cmd/lotus-seal-worker/rpc.go b/cmd/lotus-seal-worker/rpc.go
index f69129c5022..3649d6c8f9e 100644
--- a/cmd/lotus-seal-worker/rpc.go
+++ b/cmd/lotus-seal-worker/rpc.go
@@ -9,6 +9,8 @@ import (
 	"golang.org/x/xerrors"
 
 	"github.com/filecoin-project/lotus/api"
+	apitypes "github.com/filecoin-project/lotus/api/types"
+	"github.com/filecoin-project/lotus/build"
 	sectorstorage "github.com/filecoin-project/lotus/extern/sector-storage"
 	"github.com/filecoin-project/lotus/extern/sector-storage/stores"
 	"github.com/filecoin-project/lotus/extern/sector-storage/storiface"
@@ -76,4 +78,8 @@ func (w *worker) Session(ctx context.Context) (uuid.UUID, error) {
 	return w.LocalWorker.Session(ctx)
 }
 
+func (w *worker) Discover(ctx context.Context) (apitypes.OpenRPCDocument, error) {
+	return build.OpenRPCDiscoverJSON_Worker(), nil
+}
+
 var _ storiface.WorkerCalls = &worker{}
diff --git a/cmd/lotus/rpc.go b/cmd/lotus/rpc.go
index 48720d83397..abadfd20c8f 100644
--- a/cmd/lotus/rpc.go
+++ b/cmd/lotus/rpc.go
@@ -37,6 +37,7 @@ func serveRPC(a api.FullNode, stop node.StopFunc, addr multiaddr.Multiaddr, shut
 	}
 	rpcServer := jsonrpc.NewServer(serverOptions...)
 	rpcServer.Register("Filecoin", apistruct.PermissionedFullAPI(metrics.MetricedFullAPI(a)))
+	rpcServer.AliasMethod("rpc.discover", "Filecoin.Discover")
 
 	ah := &auth.Handler{
 		Verify: a.AuthVerify,
diff --git a/documentation/en/api-methods-miner.md b/documentation/en/api-methods-miner.md
index da10a8bcd5e..4c4a99c6b8f 100644
--- a/documentation/en/api-methods-miner.md
+++ b/documentation/en/api-methods-miner.md
@@ -1,6 +1,7 @@
 # Groups
 * [](#)
   * [Closing](#Closing)
+  * [Discover](#Discover)
   * [Session](#Session)
   * [Shutdown](#Shutdown)
   * [Version](#Version)
@@ -142,6 +143,25 @@ Inputs: `null`
 
 Response: `{}`
 
+### Discover
+
+
+Perms: read
+
+Inputs: `null`
+
+Response:
+```json
+{
+  "info": {
+    "title": "Lotus RPC API",
+    "version": "1.2.1/generated=2020-11-22T08:22:42-06:00"
+  },
+  "methods": [],
+  "openrpc": "1.2.6"
+}
+```
+
 ### Session
 
 
diff --git a/documentation/en/api-methods.md b/documentation/en/api-methods.md
index 34b94ff4403..4dc0303d220 100644
--- a/documentation/en/api-methods.md
+++ b/documentation/en/api-methods.md
@@ -1,6 +1,7 @@
 # Groups
 * [](#)
   * [Closing](#Closing)
+  * [Discover](#Discover)
   * [Session](#Session)
   * [Shutdown](#Shutdown)
   * [Version](#Version)
@@ -226,6 +227,25 @@ Inputs: `null`
 
 Response: `{}`
 
+### Discover
+
+
+Perms: read
+
+Inputs: `null`
+
+Response:
+```json
+{
+  "info": {
+    "title": "Lotus RPC API",
+    "version": "1.2.1/generated=2020-11-22T08:22:42-06:00"
+  },
+  "methods": [],
+  "openrpc": "1.2.6"
+}
+```
+
 ### Session
 
 
diff --git a/go.mod b/go.mod
index dd042eaeb37..621bea70214 100644
--- a/go.mod
+++ b/go.mod
@@ -10,6 +10,7 @@ require (
 	github.com/Gurpartap/async v0.0.0-20180927173644-4f7f499dd9ee
 	github.com/StackExchange/wmi v0.0.0-20190523213315-cbe66965904d // indirect
 	github.com/acarl005/stripansi v0.0.0-20180116102854-5a71ef0e047d
+	github.com/alecthomas/jsonschema v0.0.0-20200530073317-71f438968921
 	github.com/buger/goterm v0.0.0-20200322175922-2f3e71b85129
 	github.com/chzyer/readline v0.0.0-20180603132655-2972be24d48e
 	github.com/cockroachdb/pebble v0.0.0-20201001221639-879f3bfeef07
@@ -22,6 +23,7 @@ require (
 	github.com/dustin/go-humanize v1.0.0
 	github.com/elastic/go-sysinfo v1.3.0
 	github.com/elastic/gosigar v0.12.0
+	github.com/etclabscore/go-openrpc-reflect v0.0.36
 	github.com/fatih/color v1.9.0
 	github.com/filecoin-project/filecoin-ffi v0.30.4-0.20200910194244-f640612a1a1f
 	github.com/filecoin-project/go-address v0.0.5
@@ -122,11 +124,13 @@ require (
 	github.com/multiformats/go-multibase v0.0.3
 	github.com/multiformats/go-multihash v0.0.14
 	github.com/niemeyer/pretty v0.0.0-20200227124842-a10e7caefd8e // indirect
+	github.com/open-rpc/meta-schema v0.0.0-20201029221707-1b72ef2ea333
 	github.com/opentracing/opentracing-go v1.2.0
 	github.com/polydawn/refmt v0.0.0-20190809202753-05966cbd336a
 	github.com/prometheus/client_golang v1.6.0
 	github.com/raulk/clock v1.1.0
 	github.com/raulk/go-watchdog v1.0.1
+	github.com/stretchr/objx v0.2.0 // indirect
 	github.com/stretchr/testify v1.7.0
 	github.com/syndtr/goleveldb v1.0.0
 	github.com/urfave/cli/v2 v2.2.0
@@ -142,7 +146,7 @@ require (
 	go.uber.org/fx v1.9.0
 	go.uber.org/multierr v1.6.0
 	go.uber.org/zap v1.16.0
-	golang.org/x/net v0.0.0-20201021035429-f5854403a974
+	golang.org/x/net v0.0.0-20201022231255-08b38378de70
 	golang.org/x/sync v0.0.0-20201207232520-09787c993a3a
 	golang.org/x/sys v0.0.0-20201119102817-f84b799fce68
 	golang.org/x/time v0.0.0-20191024005414-555d28b269f0
@@ -150,6 +154,7 @@ require (
 	gopkg.in/check.v1 v1.0.0-20200227125254-8fa46927fb4f // indirect
 	gopkg.in/cheggaaa/pb.v1 v1.0.28
 	gotest.tools v2.2.0+incompatible
+	honnef.co/go/tools v0.0.1-2020.1.3 // indirect
 )
 
 replace github.com/filecoin-project/lotus => ./
diff --git a/go.sum b/go.sum
index d8175785cd9..e4b3d7d0ec3 100644
--- a/go.sum
+++ b/go.sum
@@ -42,8 +42,15 @@ github.com/Gurpartap/async v0.0.0-20180927173644-4f7f499dd9ee h1:8doiS7ib3zi6/K1
 github.com/Gurpartap/async v0.0.0-20180927173644-4f7f499dd9ee/go.mod h1:W0GbEAA4uFNYOGG2cJpmFJ04E6SD1NLELPYZB57/7AY=
 github.com/Knetic/govaluate v3.0.1-0.20171022003610-9aa49832a739+incompatible/go.mod h1:r7JcOSlj0wfOMncg0iLm8Leh48TZaKVeNIfJntJ2wa0=
 github.com/Kubuxu/go-os-helper v0.0.1/go.mod h1:N8B+I7vPCT80IcP58r50u4+gEEcsZETFUpAzWW2ep1Y=
+github.com/Masterminds/glide v0.13.2/go.mod h1:STyF5vcenH/rUqTEv+/hBXlSTo7KYwg2oc2f4tzPWic=
+github.com/Masterminds/semver v1.4.2/go.mod h1:MB6lktGJrhw8PrUyiEoblNEGEQ+RzHPF078ddwwvV3Y=
+github.com/Masterminds/vcs v1.13.0/go.mod h1:N09YCmOQr6RLxC6UNHzuVwAdodYbbnycGHSmwVJjcKA=
 github.com/OneOfOne/xxhash v1.2.2 h1:KMrpdQIwFcEqXDklaen+P1axHaj9BSKzvpUUfnHldSE=
 github.com/OneOfOne/xxhash v1.2.2/go.mod h1:HSdplMjZKSmBqAxg5vPj2TmRDmfkzw+cTzAElWljhcU=
+github.com/PuerkitoBio/purell v1.1.1 h1:WEQqlqaGbrPkxLJWfBwQmfEAE1Z7ONdDLqrN38tNFfI=
+github.com/PuerkitoBio/purell v1.1.1/go.mod h1:c11w/QuzBsJSee3cPx9rAFu61PvFxuPbtSwDGJws/X0=
+github.com/PuerkitoBio/urlesc v0.0.0-20170810143723-de5bf2ad4578 h1:d+Bc7a5rLufV/sSk/8dngufqelfh6jnri85riMAaF/M=
+github.com/PuerkitoBio/urlesc v0.0.0-20170810143723-de5bf2ad4578/go.mod h1:uGdkoq3SwY9Y+13GIhn11/XLaGBb4BfwItxLd5jeuXE=
 github.com/Shopify/sarama v1.19.0/go.mod h1:FVkBWblsNy7DGZRfXLU0O9RCGt5g3g3yEuWXgklEdEo=
 github.com/Shopify/toxiproxy v2.1.4+incompatible/go.mod h1:OXgGpZ6Cli1/URJOF1DMxUHB2q5Ap20/P/eIdh4G0pI=
 github.com/StackExchange/wmi v0.0.0-20190523213315-cbe66965904d h1:G0m3OIz70MZUWq3EgK3CesDbo8upS2Vm9/P3FtgI+Jk=
@@ -58,6 +65,8 @@ github.com/aead/siphash v1.0.1/go.mod h1:Nywa3cDsYNNK3gaciGTWPwHt0wlpNV15vwmswBA
 github.com/afex/hystrix-go v0.0.0-20180502004556-fa1af6a1f4f5/go.mod h1:SkGFH1ia65gfNATL8TAiHDNxPzPdmEL5uirI2Uyuz6c=
 github.com/akavel/rsrc v0.8.0 h1:zjWn7ukO9Kc5Q62DOJCcxGpXC18RawVtYAGdz2aLlfw=
 github.com/akavel/rsrc v0.8.0/go.mod h1:uLoCtb9J+EyAqh+26kdrTgmzRBFPGOolLWKpdxkKq+c=
+github.com/alecthomas/jsonschema v0.0.0-20200530073317-71f438968921 h1:T3+cD5fYvuH36h7EZq+TDpm+d8a6FSD4pQsbmuGGQ8o=
+github.com/alecthomas/jsonschema v0.0.0-20200530073317-71f438968921/go.mod h1:/n6+1/DWPltRLWL/VKyUxg6tzsl5kHUCcraimt4vr60=
 github.com/alecthomas/template v0.0.0-20160405071501-a0175ee3bccc/go.mod h1:LOuyumcjzFXgccqObfd/Ljyb9UuFJ6TxHnclSeseNhc=
 github.com/alecthomas/template v0.0.0-20190718012654-fb15b899a751/go.mod h1:LOuyumcjzFXgccqObfd/Ljyb9UuFJ6TxHnclSeseNhc=
 github.com/alecthomas/units v0.0.0-20151022065526-2efee857e7cf/go.mod h1:ybxpYRFXyAe+OPACYpWeL0wqObRcbAqCMya13uyzqw0=
@@ -140,6 +149,7 @@ github.com/cockroachdb/redact v0.0.0-20200622112456-cd282804bbd3 h1:2+dpIJzYMSbL
 github.com/cockroachdb/redact v0.0.0-20200622112456-cd282804bbd3/go.mod h1:BVNblN9mBWFyMyqK1k3AAiSxhvhfK2oOZZ2lK+dpvRg=
 github.com/codahale/hdrhistogram v0.0.0-20161010025455-3a0bb77429bd h1:qMd81Ts1T2OTKmB4acZcyKaMtRnY5Y44NuXGX2GFJ1w=
 github.com/codahale/hdrhistogram v0.0.0-20161010025455-3a0bb77429bd/go.mod h1:sE/e/2PUdi/liOCUjSTXgM1o87ZssimdTWN964YiIeI=
+github.com/codegangsta/cli v1.20.0/go.mod h1:/qJNoX69yVSKu5o4jLyXAENLRyk1uhi7zkbQ3slBdOA=
 github.com/containerd/cgroups v0.0.0-20201119153540-4cbc285b3327 h1:7grrpcfCtbZLsjtB0DgMuzs1umsJmpzaHMZ6cO6iAWw=
 github.com/containerd/cgroups v0.0.0-20201119153540-4cbc285b3327/go.mod h1:ZJeTFisyysqgcCdecO57Dj79RfL0LNeGiFUqLYQRYLE=
 github.com/coreos/etcd v3.3.10+incompatible/go.mod h1:uF7uidLiAD3TWHmW31ZFd/JWoc32PjwdhPthX9715RE=
@@ -155,6 +165,7 @@ github.com/coreos/go-systemd v0.0.0-20191104093116-d3cd4ed1dbcf/go.mod h1:F5haX7
 github.com/coreos/go-systemd/v22 v22.1.0 h1:kq/SbG2BCKLkDKkjQf5OWwKWUKj1lgs3lFI4PxnR5lg=
 github.com/coreos/go-systemd/v22 v22.1.0/go.mod h1:xO0FLkIi5MaZafQlIrOotqXZ90ih+1atmu1JpKERPPk=
 github.com/coreos/pkg v0.0.0-20160727233714-3ac0863d7acf/go.mod h1:E3G3o1h8I7cfcXa63jLwjI0eiQQMgzzUDFVpN/nH/eA=
+github.com/corpix/uarand v0.1.1/go.mod h1:SFKZvkcRoLqVRFZ4u25xPmp6m9ktANfbpXZ7SJ0/FNU=
 github.com/cpuguy83/go-md2man v1.0.10 h1:BSKMNlYxDvnunlTymqtgONjNnaRV1sTpcovwwjF22jk=
 github.com/cpuguy83/go-md2man v1.0.10/go.mod h1:SmD6nW6nTyfqj6ABTjUi3V3JVMnlJmwcJI5acqYI6dE=
 github.com/cpuguy83/go-md2man/v2 v2.0.0-20190314233015-f79a8a8ca69d/go.mod h1:maD7wRr/U5Z6m/iR4s+kqSMx2CaBsrgA7czyZG/E6dU=
@@ -223,6 +234,10 @@ github.com/envoyproxy/go-control-plane v0.9.0/go.mod h1:YTl/9mNaCwkRvm6d1a2C3ymF
 github.com/envoyproxy/go-control-plane v0.9.1-0.20191026205805-5f8ba28d4473/go.mod h1:YTl/9mNaCwkRvm6d1a2C3ymFceY/DCBVvsKhRF0iEA4=
 github.com/envoyproxy/go-control-plane v0.9.4/go.mod h1:6rpuAdCZL397s3pYoYcLgu1mIlRU8Am5FuJP05cCM98=
 github.com/envoyproxy/protoc-gen-validate v0.1.0/go.mod h1:iSmxcyjqTsJpI2R4NaDN7+kN2VEUnK/pcBlmesArF7c=
+github.com/etclabscore/go-jsonschema-walk v0.0.6 h1:DrNzoKWKd8f8XB5nFGBY00IcjakRE22OTI12k+2LkyY=
+github.com/etclabscore/go-jsonschema-walk v0.0.6/go.mod h1:VdfDY72AFAiUhy0ZXEaWSpveGjMT5JcDIm903NGqFwQ=
+github.com/etclabscore/go-openrpc-reflect v0.0.36 h1:kSqNB2U8RVoW4si+4fsv13NGNkRAQ5j78zTUx1qiehk=
+github.com/etclabscore/go-openrpc-reflect v0.0.36/go.mod h1:0404Ky3igAasAOpyj1eESjstTyneBAIk5PgJFbK4s5E=
 github.com/facebookgo/atomicfile v0.0.0-20151019160806-2de1f203e7d5 h1:BBso6MBKW8ncyZLv37o+KNyy0HrrHgfnOaGQC2qvN+A=
 github.com/facebookgo/atomicfile v0.0.0-20151019160806-2de1f203e7d5/go.mod h1:JpoxHjuQauoxiFMl1ie8Xc/7TfLuMZ5eOCONd1sUBHg=
 github.com/fatih/color v1.7.0/go.mod h1:Zm6kSWBoL9eyXnKyktHP6abPY2pDugNf5KwzbycvMj4=
@@ -333,6 +348,21 @@ github.com/go-logfmt/logfmt v0.5.0 h1:TrB8swr/68K7m9CcGut2g3UOihhbcbiMAYiuTXdEih
 github.com/go-logfmt/logfmt v0.5.0/go.mod h1:wCYkCAKZfumFQihp8CzCvQ3paCTfi41vtzG1KdI/P7A=
 github.com/go-ole/go-ole v1.2.4 h1:nNBDSCOigTSiarFpYE9J/KtEA1IOW4CNeqT9TQDqCxI=
 github.com/go-ole/go-ole v1.2.4/go.mod h1:XCwSNxSkXRo4vlyPy93sltvi/qJq0jqQhjqQNIwKuxM=
+github.com/go-openapi/jsonpointer v0.19.2/go.mod h1:3akKfEdA7DF1sugOqz1dVQHBcuDBPKZGEoHC/NkiQRg=
+github.com/go-openapi/jsonpointer v0.19.3 h1:gihV7YNZK1iK6Tgwwsxo2rJbD1GTbdm72325Bq8FI3w=
+github.com/go-openapi/jsonpointer v0.19.3/go.mod h1:Pl9vOtqEWErmShwVjC8pYs9cog34VGT37dQOVbmoatg=
+github.com/go-openapi/jsonreference v0.19.2/go.mod h1:jMjeRr2HHw6nAVajTXJ4eiUwohSTlpa0o73RUL1owJc=
+github.com/go-openapi/jsonreference v0.19.3/go.mod h1:rjx6GuL8TTa9VaixXglHmQmIL98+wF9xc8zWvFonSJ8=
+github.com/go-openapi/jsonreference v0.19.4 h1:3Vw+rh13uq2JFNxgnMTGE1rnoieU9FmyE1gvnyylsYg=
+github.com/go-openapi/jsonreference v0.19.4/go.mod h1:RdybgQwPxbL4UEjuAruzK1x3nE69AqPYEJeo/TWfEeg=
+github.com/go-openapi/spec v0.19.7/go.mod h1:Hm2Jr4jv8G1ciIAo+frC/Ft+rR2kQDh8JHKHb3gWUSk=
+github.com/go-openapi/spec v0.19.11 h1:ogU5q8dtp3MMPn59a9VRrPKVxvJHEs5P7yNMR5sNnis=
+github.com/go-openapi/spec v0.19.11/go.mod h1:vqK/dIdLGCosfvYsQV3WfC7N3TiZSnGY2RZKoFK7X28=
+github.com/go-openapi/swag v0.19.2/go.mod h1:POnQmlKehdgb5mhVOsnJFsivZCEZ/vjK9gh66Z9tfKk=
+github.com/go-openapi/swag v0.19.5/go.mod h1:POnQmlKehdgb5mhVOsnJFsivZCEZ/vjK9gh66Z9tfKk=
+github.com/go-openapi/swag v0.19.8/go.mod h1:ao+8BpOPyKdpQz3AOJfbeEVpLmWAvlT1IfTe5McPyhY=
+github.com/go-openapi/swag v0.19.11 h1:RFTu/dlFySpyVvJDfp/7674JY4SDglYWKztbiIGFpmc=
+github.com/go-openapi/swag v0.19.11/go.mod h1:Uc0gKkdR+ojzsEpjh39QChyu92vPgIr72POcgHMAgSY=
 github.com/go-sql-driver/mysql v1.4.0/go.mod h1:zAC/RDZ24gD3HViQzih4MyKcchzm+sOG5ZlKdlhCg5w=
 github.com/go-sql-driver/mysql v1.5.0/go.mod h1:DCzpHaOWr8IXmIStZouvnhqoel9Qv2LBy8hT2VhHyBg=
 github.com/go-stack/stack v1.8.0 h1:5SgMzNM5HxrEjV0ww2lTmX6E2Izsfxas4+YHWRs3Lsk=
@@ -366,6 +396,7 @@ github.com/golang/mock v1.1.1/go.mod h1:oTYuIxOrZwtPieC+H1uAHpcLFnEyAGVDL/k47Jfb
 github.com/golang/mock v1.2.0/go.mod h1:oTYuIxOrZwtPieC+H1uAHpcLFnEyAGVDL/k47Jfbm0A=
 github.com/golang/mock v1.3.1/go.mod h1:sBzyDLLjw3U8JLTeZvSv8jJB+tU5PVekmnlKIyFUx0Y=
 github.com/golang/mock v1.4.0/go.mod h1:UOMv5ysSaYNkG+OFQykRIcU/QvvxJf3p21QfJ2Bt3cw=
+github.com/golang/mock v1.4.3/go.mod h1:UOMv5ysSaYNkG+OFQykRIcU/QvvxJf3p21QfJ2Bt3cw=
 github.com/golang/mock v1.4.4 h1:l75CXGRSwbaYNpl/Z2X1XIIAMSCquvXgpVZDhwEIJsc=
 github.com/golang/mock v1.4.4/go.mod h1:l3mdAwkq5BuhzHwde/uurv3sEJeZMXNpwsxVWU71h+4=
 github.com/golang/protobuf v1.2.0/go.mod h1:6lQm79b+lXiMfvg/cZm0SGofjICqVBUtrP5yJMmIC1U=
@@ -484,7 +515,11 @@ github.com/huin/goupnp v0.0.0-20180415215157-1395d1447324/go.mod h1:MZ2ZmwcBpvOo
 github.com/huin/goupnp v1.0.0 h1:wg75sLpL6DZqwHQN6E1Cfk6mtfzS45z8OV+ic+DtHRo=
 github.com/huin/goupnp v1.0.0/go.mod h1:n9v9KO1tAxYH82qOn+UTIFQDmx5n1Zxd/ClZDMX7Bnc=
 github.com/huin/goutil v0.0.0-20170803182201-1ca381bf3150/go.mod h1:PpLOETDnJ0o3iZrZfqZzyLl6l7F3c6L1oWn7OICBi6o=
+github.com/iancoleman/orderedmap v0.0.0-20190318233801-ac98e3ecb4b0/go.mod h1:N0Wam8K1arqPXNWjMo21EXnBPOPp36vB07FNRdD2geA=
+github.com/iancoleman/orderedmap v0.1.0 h1:2orAxZBJsvimgEBmMWfXaFlzSG2fbQil5qzP3F6cCkg=
+github.com/iancoleman/orderedmap v0.1.0/go.mod h1:N0Wam8K1arqPXNWjMo21EXnBPOPp36vB07FNRdD2geA=
 github.com/ianlancetaylor/demangle v0.0.0-20181102032728-5e5cf60278f6/go.mod h1:aSSvb/t6k1mPoxDqO4vJh6VOCGPwU4O0C2/Eqndh1Sc=
+github.com/icrowley/fake v0.0.0-20180203215853-4178557ae428/go.mod h1:uhpZMVGznybq1itEKXj6RYw9I71qK4kH+OGMjRC4KEo=
 github.com/inconshreveable/mousetrap v1.0.0/go.mod h1:PxqpIevigyE2G7u3NXJIT2ANytuPF1OarO4DADm73n8=
 github.com/influxdata/influxdb1-client v0.0.0-20191209144304-8bf82d3c094d h1:/WZQPMZNsjZ7IlCpsLGdQBINg5bxKQ1K1sh6awxLtkA=
 github.com/influxdata/influxdb1-client v0.0.0-20191209144304-8bf82d3c094d/go.mod h1:qj24IKcXYK6Iy9ceXlo3Tc+vtHo9lIhSX5JddghvEPo=
@@ -710,6 +745,8 @@ github.com/joeshaw/multierror v0.0.0-20140124173710-69b34d4ec901/go.mod h1:Z86h9
 github.com/jonboulle/clockwork v0.1.0/go.mod h1:Ii8DK3G1RaLaWxj9trq07+26W01tbo22gdxWY5EU2bo=
 github.com/jonboulle/clockwork v0.1.1-0.20190114141812-62fb9bc030d1 h1:qBCV/RLV02TSfQa7tFmxTihnG+u+7JXByOkhlkR5rmQ=
 github.com/jonboulle/clockwork v0.1.1-0.20190114141812-62fb9bc030d1/go.mod h1:Ii8DK3G1RaLaWxj9trq07+26W01tbo22gdxWY5EU2bo=
+github.com/josharian/intern v1.0.0 h1:vlS4z54oSdjm0bgjRigI+G1HpF+tI+9rE5LLzOg8HmY=
+github.com/josharian/intern v1.0.0/go.mod h1:5DoeVV0s6jJacbCEi61lwdGj/aVlrQvzHFFd8Hwg//Y=
 github.com/jpillora/backoff v1.0.0 h1:uvFg412JmmHBHw7iwprIxkPMI+sGQ4kzOWsMeHnm2EA=
 github.com/jpillora/backoff v1.0.0/go.mod h1:J/6gKK9jxlEcS3zixgDgUAsiuZ7yrSoa/FX5e0EB2j4=
 github.com/jrick/logrotate v1.0.0/go.mod h1:LNinyqDIJnpAur+b8yyulnQw/wDuN1+BYKlTRt3OuAQ=
@@ -1078,6 +1115,11 @@ github.com/lyft/protoc-gen-validate v0.0.13/go.mod h1:XbGvPuh87YZc5TdIa2/I4pLk0Q
 github.com/magiconair/properties v1.8.0/go.mod h1:PppfXfuXeibc/6YijjN8zIbojt8czPbwD3XqdrwzmxQ=
 github.com/mailru/easyjson v0.0.0-20180823135443-60711f1a8329/go.mod h1:C1wdFJiN94OJF2b5HbByQZoLdCWB1Yqtg26g4irojpc=
 github.com/mailru/easyjson v0.0.0-20190312143242-1de009706dbe/go.mod h1:C1wdFJiN94OJF2b5HbByQZoLdCWB1Yqtg26g4irojpc=
+github.com/mailru/easyjson v0.0.0-20190614124828-94de47d64c63/go.mod h1:C1wdFJiN94OJF2b5HbByQZoLdCWB1Yqtg26g4irojpc=
+github.com/mailru/easyjson v0.0.0-20190626092158-b2ccc519800e/go.mod h1:C1wdFJiN94OJF2b5HbByQZoLdCWB1Yqtg26g4irojpc=
+github.com/mailru/easyjson v0.7.1/go.mod h1:KAzv3t3aY1NaHWoQz1+4F1ccyAH66Jk7yos7ldAVICs=
+github.com/mailru/easyjson v0.7.6 h1:8yTIVnZgCoiM1TgqoeTl+LfU5Jg6/xL3QhGQnimLYnA=
+github.com/mailru/easyjson v0.7.6/go.mod h1:xzfreul335JAWq5oZzymOObrkdz5UnU4kGfJJLY9Nlc=
 github.com/marten-seemann/qpack v0.1.0/go.mod h1:LFt1NU/Ptjip0C2CPkhimBz5CGE3WGDAUWqna+CNTrI=
 github.com/marten-seemann/qpack v0.2.0/go.mod h1:F7Gl5L1jIgN1D11ucXefiuJS9UMVP2opoCp2jDKb7wc=
 github.com/marten-seemann/qtls v0.2.3/go.mod h1:xzjG7avBwGGbdZ8dTGxlBnLArsVKLvwmjgmPuiQEcYk=
@@ -1212,6 +1254,7 @@ github.com/nats-io/nkeys v0.1.3/go.mod h1:xpnFELMwJABBLVhffcfd1MZx6VsNRFpEugbxzi
 github.com/nats-io/nuid v1.0.1/go.mod h1:19wcPz3Ph3q0Jbyiqsd0kePYG7A95tJPxeL+1OSON2c=
 github.com/neelance/astrewrite v0.0.0-20160511093645-99348263ae86/go.mod h1:kHJEU3ofeGjhHklVoIGuVj85JJwZ6kWPaJwCIxgnFmo=
 github.com/neelance/sourcemap v0.0.0-20151028013722-8c68805598ab/go.mod h1:Qr6/a/Q4r9LP1IltGz7tA7iOK1WonHEYhu1HRBA7ZiM=
+github.com/ngdinhtoan/glide-cleanup v0.2.0/go.mod h1:UQzsmiDOb8YV3nOsCxK/c9zPpCZVNoHScRE3EO9pVMM=
 github.com/niemeyer/pretty v0.0.0-20200227124842-a10e7caefd8e h1:fD57ERR4JtEqsWbfPhv4DMiApHyliiK5xCTNVSPiaAs=
 github.com/niemeyer/pretty v0.0.0-20200227124842-a10e7caefd8e/go.mod h1:zD1mROLANZcx1PVRCS0qkT7pwLkGfwJo4zjcN/Tysno=
 github.com/nikkolasg/hexjson v0.0.0-20181101101858-78e39397e00c h1:5bFTChQxSKNwy8ALwOebjekYExl9HTT9urdawqC95tA=
@@ -1239,6 +1282,8 @@ github.com/onsi/gomega v1.9.0/go.mod h1:Ho0h+IUsWyvy1OpqCwxlQ/21gkhVunqlU8fDGcoT
 github.com/onsi/gomega v1.10.1 h1:o0+MgICZLuZ7xjH7Vx6zS/zcu93/BEp1VwkIW1mEXCE=
 github.com/onsi/gomega v1.10.1/go.mod h1:iN09h71vgCQne3DLsj+A5owkum+a2tYe+TOCB1ybHNo=
 github.com/op/go-logging v0.0.0-20160315200505-970db520ece7/go.mod h1:HzydrMdWErDVzsI23lYNej1Htcns9BCg93Dk0bBINWk=
+github.com/open-rpc/meta-schema v0.0.0-20201029221707-1b72ef2ea333 h1:CznVS40zms0Dj5he4ERo+fRPtO0qxUk8lA8Xu3ddet0=
+github.com/open-rpc/meta-schema v0.0.0-20201029221707-1b72ef2ea333/go.mod h1:Ag6rSXkHIckQmjFBCweJEEt1mrTPBv8b9W4aU/NQWfI=
 github.com/opencontainers/runtime-spec v1.0.2 h1:UfAcuLBJB9Coz72x1hgl8O5RVzTdNiaglX6v2DM6FI0=
 github.com/opencontainers/runtime-spec v1.0.2/go.mod h1:jwyrGlmzljRJv/Fgzds9SsS/C5hL+LL3ko9hs6T5lQ0=
 github.com/opentracing-contrib/go-grpc v0.0.0-20180928155321-4b5a12d3ff02/go.mod h1:JNdpVEzCpXBgIiv4ds+TzhN1hrtxq6ClLrTlT9OQRSc=
@@ -1406,10 +1451,12 @@ github.com/streadway/amqp v0.0.0-20190404075320-75d898a42a94/go.mod h1:AZpEONHx3
 github.com/streadway/amqp v0.0.0-20190827072141-edfb9018d271/go.mod h1:AZpEONHx3DKn8O/DFsRAY58/XVQiIPMTMB1SddzLXVw=
 github.com/streadway/handy v0.0.0-20190108123426-d5acb3125c2a/go.mod h1:qNTQ5P5JnDBl6z3cMAg/SywNDC5ABu5ApDIw6lUbRmI=
 github.com/stretchr/objx v0.1.0/go.mod h1:HFkY916IF+rwdDfMAkV7OtwuqBVzrE8GR6GFx+wExME=
-github.com/stretchr/objx v0.1.1 h1:2vfRuCMp5sSVIDSqO8oNnWJq7mPa6KVP3iPIwFBuy8A=
 github.com/stretchr/objx v0.1.1/go.mod h1:HFkY916IF+rwdDfMAkV7OtwuqBVzrE8GR6GFx+wExME=
+github.com/stretchr/objx v0.2.0 h1:Hbg2NidpLE8veEBkEZTL3CvlkUIVzuU9jDplZO54c48=
+github.com/stretchr/objx v0.2.0/go.mod h1:qt09Ya8vawLte6SNmTgCsAVtYtaKzEcn8ATUoHMkEqE=
 github.com/stretchr/testify v1.2.2/go.mod h1:a8OnRcib4nhh0OaRAV+Yts87kKdq0PP7pXfy6kDkUVs=
 github.com/stretchr/testify v1.3.0/go.mod h1:M5WIy9Dh21IEIfnGCwXGc5bZfKNJtfHm1UVUgZn+9EI=
+github.com/stretchr/testify v1.3.1-0.20190311161405-34c6fa2dc709/go.mod h1:M5WIy9Dh21IEIfnGCwXGc5bZfKNJtfHm1UVUgZn+9EI=
 github.com/stretchr/testify v1.4.0/go.mod h1:j7eGeouHqKxXV5pUuKE4zz7dFj8WfuZ+81PSLYec5m4=
 github.com/stretchr/testify v1.5.1/go.mod h1:5W2xD1RspED5o8YsWQXVCued0rvSQ+mT+I5cxcmMvtA=
 github.com/stretchr/testify v1.6.0/go.mod h1:6Fq8oRcR53rry900zMqJjRRixrwX3KX962/h/Wwjteg=
@@ -1420,6 +1467,12 @@ github.com/syndtr/goleveldb v1.0.0 h1:fBdIW9lB4Iz0n9khmH8w27SJ3QEJ7+IgjPEwGSZiFd
 github.com/syndtr/goleveldb v1.0.0/go.mod h1:ZVVdQEZoIme9iO1Ch2Jdy24qqXrMMOU6lpPAyBWyWuQ=
 github.com/tarm/serial v0.0.0-20180830185346-98f6abe2eb07/go.mod h1:kDXzergiv9cbyO7IOYJZWg1U88JhDg3PB6klq9Hg2pA=
 github.com/texttheater/golang-levenshtein v0.0.0-20180516184445-d188e65d659e/go.mod h1:XDKHRm5ThF8YJjx001LtgelzsoaEcvnA7lVWz9EeX3g=
+github.com/tidwall/gjson v1.6.0 h1:9VEQWz6LLMUsUl6PueE49ir4Ka6CzLymOAZDxpFsTDc=
+github.com/tidwall/gjson v1.6.0/go.mod h1:P256ACg0Mn+j1RXIDXoss50DeIABTYK1PULOJHhxOls=
+github.com/tidwall/match v1.0.1 h1:PnKP62LPNxHKTwvHHZZzdOAOCtsJTjo6dZLCwpKm5xc=
+github.com/tidwall/match v1.0.1/go.mod h1:LujAq0jyVjBy028G1WhWfIzbpQfMO8bBZ6Tyb0+pL9E=
+github.com/tidwall/pretty v1.0.0 h1:HsD+QiTn7sK6flMKIvNmpqz1qrpP3Ps6jOKIKMooyg4=
+github.com/tidwall/pretty v1.0.0/go.mod h1:XNkn88O1ChpSDQmQeStsy+sBenx6DDtFZJxhVysOjyk=
 github.com/tj/go-spin v1.1.0 h1:lhdWZsvImxvZ3q1C5OIB7d72DuOwP4O2NdBg9PyzNds=
 github.com/tj/go-spin v1.1.0/go.mod h1:Mg1mzmePZm4dva8Qz60H2lHwmJ2loum4VIrLgVnKwh4=
 github.com/tmc/grpc-websocket-proxy v0.0.0-20170815181823-89b8d40f7ca8/go.mod h1:ncp9v5uamzpCO7NfCPTXjqaC+bZgJeR0sMTm6dMHP7U=
@@ -1664,13 +1717,15 @@ golang.org/x/net v0.0.0-20191007182048-72f939374954/go.mod h1:z5CRVTTTmAJ677TzLL
 golang.org/x/net v0.0.0-20191209160850-c0dbc17a3553/go.mod h1:z5CRVTTTmAJ677TzLLGU+0bjPO0LkuOLi4/5GtJWs/s=
 golang.org/x/net v0.0.0-20200202094626-16171245cfb2/go.mod h1:z5CRVTTTmAJ677TzLLGU+0bjPO0LkuOLi4/5GtJWs/s=
 golang.org/x/net v0.0.0-20200222125558-5a598a2470a0/go.mod h1:z5CRVTTTmAJ677TzLLGU+0bjPO0LkuOLi4/5GtJWs/s=
+golang.org/x/net v0.0.0-20200324143707-d3edc9973b7e/go.mod h1:qpuaurCH72eLCgpAm/N6yyVIVM9cpaDIP3A8BGJEC5A=
 golang.org/x/net v0.0.0-20200519113804-d87ec0cfa476/go.mod h1:qpuaurCH72eLCgpAm/N6yyVIVM9cpaDIP3A8BGJEC5A=
 golang.org/x/net v0.0.0-20200520004742-59133d7f0dd7/go.mod h1:qpuaurCH72eLCgpAm/N6yyVIVM9cpaDIP3A8BGJEC5A=
 golang.org/x/net v0.0.0-20200602114024-627f9648deb9/go.mod h1:qpuaurCH72eLCgpAm/N6yyVIVM9cpaDIP3A8BGJEC5A=
 golang.org/x/net v0.0.0-20200625001655-4c5254603344/go.mod h1:/O7V0waA8r7cgGh81Ro3o1hOxt32SMVPicZroKQ2sZA=
 golang.org/x/net v0.0.0-20200707034311-ab3426394381/go.mod h1:/O7V0waA8r7cgGh81Ro3o1hOxt32SMVPicZroKQ2sZA=
-golang.org/x/net v0.0.0-20201021035429-f5854403a974 h1:IX6qOQeG5uLjB/hjjwjedwfjND0hgjPMMyO1RoIXQNI=
 golang.org/x/net v0.0.0-20201021035429-f5854403a974/go.mod h1:sp8m0HH+o8qH0wwXwYZr8TS3Oi6o0r6Gce1SSxlDquU=
+golang.org/x/net v0.0.0-20201022231255-08b38378de70 h1:Z6x4N9mAi4oF0TbHweCsH618MO6OI6UFgV0FP5n0wBY=
+golang.org/x/net v0.0.0-20201022231255-08b38378de70/go.mod h1:sp8m0HH+o8qH0wwXwYZr8TS3Oi6o0r6Gce1SSxlDquU=
 golang.org/x/oauth2 v0.0.0-20180821212333-d2e6202438be/go.mod h1:N/0e6XlmueqKjAGxoOufVs8QHGRruUQn6yWY3a++T0U=
 golang.org/x/oauth2 v0.0.0-20181017192945-9dcd33a902f4/go.mod h1:N/0e6XlmueqKjAGxoOufVs8QHGRruUQn6yWY3a++T0U=
 golang.org/x/oauth2 v0.0.0-20181203162652-d668ce993890/go.mod h1:N/0e6XlmueqKjAGxoOufVs8QHGRruUQn6yWY3a++T0U=
@@ -1798,6 +1853,7 @@ golang.org/x/tools v0.0.0-20191113191852-77e3bb0ad9e7/go.mod h1:b+2E5dAYhXwXZwtn
 golang.org/x/tools v0.0.0-20191115202509-3a792d9c32b2/go.mod h1:b+2E5dAYhXwXZwtnZ6UAqBI28+e2cm9otk0dWdXHAEo=
 golang.org/x/tools v0.0.0-20191119224855-298f0cb1881e/go.mod h1:b+2E5dAYhXwXZwtnZ6UAqBI28+e2cm9otk0dWdXHAEo=
 golang.org/x/tools v0.0.0-20191125144606-a911d9008d1f/go.mod h1:b+2E5dAYhXwXZwtnZ6UAqBI28+e2cm9otk0dWdXHAEo=
+golang.org/x/tools v0.0.0-20191130070609-6e064ea0cf2d/go.mod h1:b+2E5dAYhXwXZwtnZ6UAqBI28+e2cm9otk0dWdXHAEo=
 golang.org/x/tools v0.0.0-20191216052735-49a3e744a425/go.mod h1:TB2adYChydJhpapKDTa4BR/hXlZSLoq2Wpct/0txZ28=
 golang.org/x/tools v0.0.0-20191216173652-a0e659d51361/go.mod h1:TB2adYChydJhpapKDTa4BR/hXlZSLoq2Wpct/0txZ28=
 golang.org/x/tools v0.0.0-20191227053925-7b8e75db28f4/go.mod h1:TB2adYChydJhpapKDTa4BR/hXlZSLoq2Wpct/0txZ28=
@@ -1928,8 +1984,9 @@ honnef.co/go/tools v0.0.0-20190102054323-c2f93a96b099/go.mod h1:rf3lG4BRIbNafJWh
 honnef.co/go/tools v0.0.0-20190106161140-3f1c8253044a/go.mod h1:rf3lG4BRIbNafJWhAfAdb/ePZxsR/4RtNHQocxwk9r4=
 honnef.co/go/tools v0.0.0-20190418001031-e561f6794a2a/go.mod h1:rf3lG4BRIbNafJWhAfAdb/ePZxsR/4RtNHQocxwk9r4=
 honnef.co/go/tools v0.0.0-20190523083050-ea95bdfd59fc/go.mod h1:rf3lG4BRIbNafJWhAfAdb/ePZxsR/4RtNHQocxwk9r4=
-honnef.co/go/tools v0.0.1-2019.2.3 h1:3JgtbtFHMiCmsznwGVTUWbgGov+pVqnlf1dEJTNAXeM=
 honnef.co/go/tools v0.0.1-2019.2.3/go.mod h1:a3bituU0lyd329TUQxRnasdCoJDkEUEAqEt0JzvZhAg=
+honnef.co/go/tools v0.0.1-2020.1.3 h1:sXmLre5bzIR6ypkjXCDI3jHPssRhc8KD/Ome589sc3U=
+honnef.co/go/tools v0.0.1-2020.1.3/go.mod h1:X/FiERA/W4tHapMX5mGpAtMSVEeEUOyHaw9vFzvIQ3k=
 howett.net/plist v0.0.0-20181124034731-591f970eefbb h1:jhnBjNi9UFpfpl8YZhA9CrOqpnJdvzuiHsl/dnxl11M=
 howett.net/plist v0.0.0-20181124034731-591f970eefbb/go.mod h1:vMygbs4qMhSZSc4lCUl2OEE+rDiIIJAIdR4m7MiMcm0=
 modernc.org/cc v1.0.0 h1:nPibNuDEx6tvYrUAtvDTTw98rx5juGsa5zuDnKwEEQQ=
diff --git a/node/impl/common/common.go b/node/impl/common/common.go
index 389e2fbc621..7d99fb42ac9 100644
--- a/node/impl/common/common.go
+++ b/node/impl/common/common.go
@@ -24,6 +24,7 @@ import (
 	"github.com/filecoin-project/go-jsonrpc/auth"
 
 	"github.com/filecoin-project/lotus/api"
+	apitypes "github.com/filecoin-project/lotus/api/types"
 	"github.com/filecoin-project/lotus/build"
 	"github.com/filecoin-project/lotus/node/modules/dtypes"
 	"github.com/filecoin-project/lotus/node/modules/lp2p"
@@ -207,6 +208,10 @@ func (a *CommonAPI) NetBandwidthStatsByProtocol(ctx context.Context) (map[protoc
 	return a.Reporter.GetBandwidthByProtocol(), nil
 }
 
+func (a *CommonAPI) Discover(ctx context.Context) (apitypes.OpenRPCDocument, error) {
+	return build.OpenRPCDiscoverJSON_Full(), nil
+}
+
 func (a *CommonAPI) ID(context.Context) (peer.ID, error) {
 	return a.Host.ID(), nil
 }
diff --git a/node/impl/storminer.go b/node/impl/storminer.go
index cde168bea4f..e81560059c9 100644
--- a/node/impl/storminer.go
+++ b/node/impl/storminer.go
@@ -8,6 +8,7 @@ import (
 	"strconv"
 	"time"
 
+	"github.com/filecoin-project/lotus/build"
 	"github.com/google/uuid"
 	"github.com/ipfs/go-cid"
 	"github.com/libp2p/go-libp2p-core/host"
@@ -31,6 +32,7 @@ import (
 
 	"github.com/filecoin-project/lotus/api"
 	"github.com/filecoin-project/lotus/api/apistruct"
+	apitypes "github.com/filecoin-project/lotus/api/types"
 	"github.com/filecoin-project/lotus/chain/types"
 	"github.com/filecoin-project/lotus/markets/storageadapter"
 	"github.com/filecoin-project/lotus/miner"
@@ -690,4 +692,8 @@ func (sm *StorageMinerAPI) ActorAddressConfig(ctx context.Context) (api.AddressC
 	return sm.AddrSel.AddressConfig, nil
 }
 
+func (sm *StorageMinerAPI) Discover(ctx context.Context) (apitypes.OpenRPCDocument, error) {
+	return build.OpenRPCDiscoverJSON_Miner(), nil
+}
+
 var _ api.StorageMiner = &StorageMinerAPI{}