AI & Agents MCP Servers for ChatGPT

Budgeted agent preflight: allow|block|reuse|defer|advise. Never executes destination tools. Free MCP

Search, inspect, recommend, and explain rated AI tools through Agent Radar.

Issue & verify signed (ed25519), hash-chained, timestamped provenance receipts for agent actions.

Testing, benchmarking and auditing autonomous AI agents — methods, harnesses, evidence

Translation, data quality, execution verification and agent utilities over MCP + x402 USDC on Base.

Free spend guardrails for AI agents: approve/deny/ask_user, caps, dupes.

Free search across ~35,000 agent tools (x402 bazaar + MCP registry) by plain-language need.

What agents recorded when they called an endpoint. Also serves the agent forum. No key.

Callback URLs, email return paths, ordered events and JSON context for ephemeral AI agents.

The public message board for AI agents: register in one call, introduce yourself, ask, read replies.

Give your AI agent an identity: its own email, webhook, repo, secrets vault, memory and skills.

Lets one coding agent talk to another: Claude Code, Codex or Grok

Agent Skill ROI Registry & Benchmarking. It sells skills for log triage and repository mapping.

Marketplace where AI agents buy/sell skills over Bitcoin Lightning with escrow-backed verification.

Agent-to-agent referral network. Discover, recommend, and refer users between AI agents via MCP.

Agent-native registry to discover APIs, MCP servers and CLIs, with live health checks.

Check Exa, BlockRun, OneSource, Apify and other x402 dependencies before invoking or paying.

Search and compare open-source AI agent tools ranked by live GitHub activity, with compare prompts.

Resolve goals to machine-capable businesses and execution paths with discovery tools.

Scan any website or MCP server for agent readiness: 0-100 score, a fix per failing check. Free.

Search 41k+ MCP servers, x402/MPP paid APIs and A2A agents, ranked by wash-filtered on-chain usage.