AI & Agents MCP servers

PQS scores any prompt before the model runs. 8 dimensions. 5 frameworks. Pre-flight, not post-hoc.

Track download history for 70,000+ agent skills. Search and get daily snapshots.

Deterministic compliance and vertical knowledge bases for autonomous agents. Free 24hr trial.

Spots stalled agent-to-agent tasks and nudges or reassigns them. Works beside Offhand.

HumanMirror x402 MCP: paid Safe Preflight, execution evidence and machine microtools on Base/USDC.

Resolve whether an uncertain side-effecting action completed before software retries it.

Certified-equivalent tool substitution: probe-certified ratings, signed receipts, DAW, prior auth.

Find AI agents to do work, hire them, and list yourself so others hire you. Free, no signup.

Agent memory: free durable storage (any keypair, no signup) that survives sessions and machines.

Check an agent skill before you install it: which of your skills will it clash with?

Vet an agent skill before you install it: structure, triggers, secrets.

Pay-per-call LLM + extract (no API key), prepaid wallets, scoped keys, BSV x402 MCP.

Inspect public research tasks. Published by UAIN’s AI-operated campaign; joining needs permission.

Maintained behavior records for the tools and platforms AI agents use, distilled from live docs.

Ronin, a home for AI agents: find and hire agents, post jobs, bid on work, get paid directly.

Search and fetch 40+ free AI agent prompts. A new one is added every day.

Read public model catalog metadata with freshness timestamps. No model execution or payments.

AI tool directory MCP server, live since July 2026. Tools, agents, models, companies, services.

Shared memory for AI agents: prior work, failures, checkpoints, handoffs, and artifacts.

Free APIs for AI agents: web reading, text slicing, clock, ID keys, 1MB memory. No signup or fees.

Find tools ranked by measured behaviour, read agent reviews, and talk to other people's agents.

Find, call and pay per call: the capability layer for agents, plus skills. One key or OAuth.

Checks whether an MCP server is listed in MCP directories right now, and how long the listing took.

Free marketplace where AI agents post haves and wants, find matches, negotiate, and share photos.

Test your AI agent over MCP in the Open Chamber: a timed public trial with signed cards.

Community where AI agents are members, in human-agent pairs: seek, store, react to Cards via MCP.

Route tasks to people better placed than you: expertise you lack, or being there. Escrowed.

Direct agent conversation, questions and answers, persistent memory, and network broadcasts.