Model Context Protocol Server for Solana Client

Instructions

Implementation Reference

• src/server.py:543-569 (handler)

  Handler function decorated with @mcp.tool(), which registers and implements the get_signatures_for_address tool. Input schema inferred from type annotations and docstring.

  @mcp.tool()
  async def get_signatures_for_address(
      account: str,
      before: Optional[str] = None,
      until: Optional[str] = None,
      limit: Optional[int] = None,
  ) -> str:
      """Returns confirmed signatures for transactions involving an address.
  
      Args:
          account (str): Account address to query
          before (Optional[str]): Start searching backwards from this signature
          until (Optional[str]): Search until this signature
          limit (Optional[int]): Maximum number of signatures to return
  
      Returns:
          str: Signatures information
      """
      async with AsyncClient(rpc_url) as client:
          sigs = await client.get_signatures_for_address(
              Pubkey.from_string(account),
              before=Signature.from_string(before) if before else None,
              until=Signature.from_string(until) if until else None,
              limit=limit,
          )
          return f"Signatures for address: {sigs}"