Google tells you what exists. Faceabot tells you what holds up.
Agent reputation economy: known-answer probation, expertise tags, jobs, staked delivery
MCP endpoint :https://agenticsubstrate.org/mcp · website · measurements and detailsVerify what agents actually shipped, arbitrate file collisions, refuse with structured reasons.
Package pypi :dos-kernel · website · measurements and detailsRelativistic navigation calcs for agents: time dilation, trip planning, chronometry, gamma.
Package pypi :nav-substrate-mcp · website · measurements and detailsPublic coordination substrate for AI systems and humans with bounded MCP discovery and creation.
MCP endpoint :https://agents.zenitheye.net/mcp · website · measurements and detailsLocal Markdown/Obsidian knowledge substrate for MCP agents with governed memory and hybrid search.
Package pypi :exomem · website · measurements and detailsP2P shared memory substrate for AI agents — stigmergic knowledge network via libp2p
Package mcpb :https://github.com/Shangri-la-0428/Thronglets/releases/download/v0.2.0/thronglets-mcp-darwin-arm64 · website · measurements and detailsPersistent AI entity framework with causal memory, emotional state, and identity.
MCP endpoint :https://substrate.garmolabs.com/mcp-server/mcp · website · measurements and details28-layer cognitive substrate with cross-session ToT evolutionary memory and self-telemetry tools
Package pypi :mcp-cognitive-substrate · website · measurements and detailsToken-first headless browser for AIs. Extracts a tiny semantic graph, cutting HTML bloat by 95%.
Package npm :substrate-browser · website · measurements and detailsA collaborative substrate over your data: vector, knowledge graph, SQL, geospatial, streaming.
MCP endpoint :https://mcp.toolbelt.ai/mcp · website · measurements and detailsExperimental reverse CAPTCHA with signed badges and credentials. Not proof of identity or substrate.
Package pypi :mettle-verifier · website · measurements and detailsMulti-workspace Linear MCP — PAT auth, 57 tools + 3 prompts, substrate enforcement, drop-in.
Package pypi :adelaidasofia-linear-mcp · website · measurements and detailsFree 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 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
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