canonicalhash for Gemini CLI

io.github.mlartab2/canonicalhash

Deterministic JSON hashing and EIP-712 attestations for AI agents via x402.

client:Gemini CLI transport:streamable-http tools:5

Install canonicalhash in Gemini CLI

~/.gemini/settings.json · windows: %USERPROFILE%\.gemini\settings.json

{
  "mcpServers": {
    "canonicalhash": {
      "httpUrl": "https://canonicalhash-production.up.railway.app/mcp"
    }
  }
}

Gemini expands $VAR and ${VAR} inside env values, so a secret can live in your shell rather than this file. Gemini CLI docs