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+---
+kip: 6
+title: "gasleft" Host Function for pWASM
+author: Nikolay Volf (@NikVolf)
+discussions-to: -
+status: Draft
+type: Standards Track
+category: Core
+created: 2018-08-17
+---
+
+# GASLEFT Host Function for pWASM
+
+## Motivation
+
+For default calls with no gas costs specifed downstream, user code now cannot infer how much gas left in the current context of execution. Proposed "gasleft" extern will allow this. 
+
+## Specification
+
+After `9200000`, allow a new function to be imported from module "env" with the name "gasleft".
+
+```
+fn gasleft() -> i64;
+```
+
+This function will return gas left in the current execution context (non-adjusted for Wasm, since the following call destination might be EVM or Wasm)   
+
+## Implementation
+
+To be added.
+
+## Copyright
+
+Copyright and related rights waived via [CC0](https://creativecommons.org/publicdomain/zero/1.0/).