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Windsurf anchor x402 decode_calldata

How to: Windsurf anchor x402 decode_calldata

client:Windsurf transport:streamable-http tool:decode_calldata

Add anchor x402 to Windsurf

  1. 01

    Open ~/.codeium/windsurf/mcp_config.json and merge this in. Keep any servers already there.

{
  "mcpServers": {
    "anchor-x402": {
      "serverUrl": "https://api.anchor-x402.com/mcp"
    }
  }
}
  1. 02

    Save the file and restart Windsurf.

  2. 03

    Ask for something decode_calldata does. Windsurf lists the server's tools on connect and calls decode_calldata itself — you do not invoke it by name.

  3. 04

    If nothing happens, check the server is running and that anchor x402's identifier in your config matches the one above exactly.

Global only — Windsurf has no per-project MCP config. Refresh Cascade after saving. Windsurf docs

Set these first

anchor x402 will not start until these are set, so decode_calldata never becomes available.

  • ANCHOR_WALLET_PRIVATE_KEY

Same tool, other clients

This list was read from the server itself, by connecting to it and calling tools/list on 24 September 2026. It is what the server actually exposes, not what its listing claims.

Mutating and Read-only are read off each tool's name, not its schema — a hint, not a guarantee. The registry stores tool names only; connect the server for its live schemas.