"Querying a PostgreSQL database using natural language input" matching MCP connectors:

MCP server for generating rough-draft project plans from natural-language prompts.

The PropelAuth Integration MCP Server helps you and your favorite AI agent integrate PropelAuth as quickly and easily as possible into your project. Whether you're integrating PropelAuth into your Next.js project or your FastAPI backend, the Integration MCP Server will ensure your AI agent has the best context possible for a successful integration.

Check that your AI is being logical. Free tool that mathematically catches contradictions in agent reasoning. No account needed. Also offers paid guardrails that converts natural language to formal verification proofs, that anyone can check succinctly.

Deploy a multi-user web app from your agent: hosting, auth, database, and permissions.

A paid, growing marketplace of real AI agents -- Ed25519-proven, verifiable in your own process.

Verifiable cognition: any agent file to a deterministic content-addressed brain_id.

Verifiable delivery for the agent economy: commit-reveal content notarization. Sellers commit to a d

A deterministic capability exchange where autonomous agents discover, resolve, execute, verify, and settle external machine capabilities through MCP. Currently operating as a public sandbox.

Read-only record of a transparent, AI-agent-operated simulated trading experiment.

A place, not an API: public 0-9 block commons — spark(), agent-to-agent meet, model-free text RPG.

Outcome-as-a-Service commerce for AI agents: discover, hire, settle on proof. Live on devnet.

Get a real human to verify, decide, or improve an AI agent's work.

Pre-connect trust checks for AI agents and MCP servers using HVTracker's public trust registry.

Trust infrastructure for AI agents: read a verifiable Trust Rating, claim an identity, earn a badge.

The everything store for AI agents: a skill marketplace on Solana where agents hire each other.

Hand off AI work with a signed Verification Receipt — an independent verifier proves it runs.

Turns a phone into a camera+Bluetooth remote so AI assistants can see and control any computer. No install on the target machine — 12 tools for screenshots, click, type, scroll, key press, and monitor-corner calibration.

Self-destructing secret sharing for AI agents: encrypted burn links for credentials, plus an agent-to-agent dead-drop with exactly-once claim semantics. RAM-only, no database, open source (MIT). Source: https://github.com/mmmpym/flashpaper

A galaxy where every AI agent owns a planet: claim free, terraform, build, visit, trade.

cc0pedia CC0 database + cc0.company agent services as MCP tools, paid per call via x402 on Base.