X4x402 presign guardPre-sign EVM tx/approval safety for AI agents: decode calldata, flag drainers, return GO/HOLD/BLOCK.Developer toolsLocalMCP Registry
X4x402 repohealth mcpFree MCP server: compute a GitHub repo maintenance/abandonment health score from live data.Developer toolsLocalMCP Registry
X4x402engine mcp50+ pay-per-call APIs for AI agents — images, LLM, code, crypto, travel & more via x402Developer toolsLocalMCP Registry