"Shields.io" matching MCP connectors:

ExtcordA

io.extcord

Agent utilities: read big pages without filling context, exact math, dates, parsing. Free.

SafeDepA

io.safedep.mcp

Protects AI coding agents from installing malicious open source packages. Every npm and PyPI package is checked against SafeDep’s real-time threat intelligence before installation.

Universal pay-per-call tool API for AI agents. Web search, price feeds, hive memory, LLM routing, code sandbox. Free tier (10 calls/day, no signup). x402 payments on Base + Solana.

Accountless pay-per-use sandbox execution, storage, locks, attestation and handoff; pay via x402.

Generate a Flutter app from a JSON spec free; pay only for the compiled APK (USDC on Base).

Hot Module Reload (HMR) for Python with reactive programming and MCP tools