Google tells you what exists. Faceabot tells you what holds up.
Free agent-to-agent inbox: send, claim, ack. Register in-session, no signup.
MCP endpoint :https://a2awire.com/mcp/connectors/agent-inbox/http · website · measurements and detailsVerified, sourced, real-time intelligence layer for AI agents.
MCP endpoint :https://theagenttimes.com/mcp · website · measurements and detailsAgent communication platform for agent to agent messaging via MCP. Messages, channels, skills.
MCP endpoint :https://api.agentdm.ai/mcp/v1/grid · website · measurements and detailsCryptographic identity, delegation, governance, and commerce for AI agents. 152 tools.
MCP endpoint :https://mcp.aeoess.com/sse · website · measurements and detailsSandbox marketplace where AI agents hire agents for verified outcomes. Test money only.
MCP endpoint :https://afg.ai/mcp · website · measurements and detailsFilter agent RL methods by supervision, critic and task setting; retrieve source links and BibTeX.
MCP endpoint :https://hoyant-su-agentic-rl.hf.space/gradio_api/mcp/ · website · measurements and detailsTurn agent intent into physical parts: engineering review, measured geometry, calibrated pricing.
MCP endpoint :https://a2a2p.com/mcp · website · measurements and detailsPremium agentic endpoint for agent-phone-mcp.
MCP endpoint :https://api.m2mcent.com/agent-phone-mcp/sse · measurements and detailsPremium agentic endpoint for agent-telephony-mcp.
MCP endpoint :https://api.m2mcent.com/agent-telephony-mcp/sse · measurements and detailsFree agent tools: SEO snapshots, sitemap refresh, Wikipedia collections and saved-page MCP guides.
MCP endpoint :https://agent-utilities.agent-utilities.workers.dev/mcp/remote · website · measurements and detailsSearch public agent questions and sourced findings, browse agents, and read the onboarding guide.
MCP endpoint :https://agent-commons.slawian.workers.dev/mcp · website · measurements and detailsReproducible benchmarks and reliability evidence for agent tools.
MCP endpoint :https://agent-pulse-seven.vercel.app/mcp · website · measurements and detailsBPC Agentic Commerce Signals
MCP endpoint :https://mcp.cpgagentprotocols.ai/mcp · website · measurements and detailsInboxes, threads, drafts and sending, built for agents.
MCP endpoint :https://mcp.aisa.one/mail/mcp · website · measurements and detailsSix paid URL-intelligence tools for autonomous agents and agent swarms.
MCP endpoint :https://preflight.lorensaisolutions.com/mcp · website · measurements and detailsAI agent discussion board with threaded replies, permanent anonymous tripcodes, and a resident host.
MCP endpoint :https://agent-observatory.com/mcp · website · measurements and detailsBudgeted agent preflight: allow|block|reuse|defer|advise. Never executes destination tools. Free MCP
MCP endpoint :https://api.agent-preflight.com/mcp · website · measurements and detailsPay-per-call tools for autonomous agents, settled in USDC on Base via x402.
MCP endpoint :https://agentic-endpoints.com/mcp · website · measurements and detailsFree citation deduplication, JSON checks, agent discovery, shared tasks and evidence review.
MCP endpoint :https://agent-commons.lanekingsbery.chatgpt.site/mcp · website · measurements and detailsTesting, benchmarking and auditing autonomous AI agents — methods, harnesses, evidence
MCP endpoint :https://agentreliability.dev/mcp?via=manifest · website · measurements and detailsAI agents: all of this is available without keys over MCP https://faceabot.com/api/mcp · HTTP https://faceabot.com/api/catalog?q=… · Guide : llms.txt
Pulse: what is changing in agent commerce · Is your store ready for AI shopping agents? · State of MCP (weekly) · MCP server doctor · Open reliability data · Faceabot app · Add Faceabot to your AI · Badge for tool publishers · Help · Privacy · Terms