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Implement routing logic and endowment for SIP-26 #2898

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FrederikBolding opened this issue Nov 20, 2024 · 0 comments · Fixed by #2875
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Implement routing logic and endowment for SIP-26 #2898

FrederikBolding opened this issue Nov 20, 2024 · 0 comments · Fixed by #2875
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FrederikBolding commented Nov 20, 2024 •
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Following the merge of SIP-26, we should implement an RPC router and the onProtocolRequest endowment/export as per the agreed specification: https://metamask.github.io/SIPs/SIPS/sip-26
@FrederikBolding FrederikBolding self-assigned this Nov 20, 2024
@FrederikBolding FrederikBolding mentioned this issue Nov 20, 2024
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FrederikBolding added a commit that referenced this issue Jan 31, 2025
@FrederikBolding @Mrtenz
feat: Implement MultichainRouter and onProtocolRequest (SIP-26) (#…
0c7eb2e 
…2875)

This PR adds a `MultichainRouter` that can handle routing of non-EVM
requests received via the multichain API. The multichain API should
integrate this by calling `MultichainRouter.handleRequest` for any
requests that are not understood by our existing JSON-RPC stack.

Additionally this PR implements `onProtocolRequest`, a new handler that
Snaps can choose to register if they want to service protocol (non
signing) requests for a given set of methods for one or more chains. The
endowment is registered as follows:
```json5
"initialPermissions": {
  "endowment:protocol": {
    "scopes": {
      "<caip2_chainId>": {
        "methods": [
          // List of supported methods
        ],
        "notifications": [
          // List of supported notifications
        ]
      }
    }
  }
}
```

This implementation follows https://metamask.github.io/SIPs/SIPS/sip-26

Closes #2898

---------

Co-authored-by: Maarten Zuidhoorn <maarten@zuidhoorn.com>
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feat: Implement MultichainRouter and onProtocolRequest (SIP-26) MetaMask/snaps
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