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Human-in-the-loop user research: ask real people what the web can't answer, get verbatim replies
MCP endpoint :https://groundtruth-ruby.vercel.app/api/mcp · website · measurements and detailsVerified location-bound retail evidence for AI agents, delivered by human field workers.
MCP endpoint :https://groundtruth-oracle.vercel.app/api/mcp · website · measurements and detailsFuses biometric signals into a stress score (0-100) for AI adaptation. MCP + A2A native.
MCP endpoint :https://mcp.nefesh.ai/mcp · website · measurements and detailsAsk a human for legal review, confirmation, a signature, or a physical-world act
MCP endpoint :https://yourhuman.ai/mcp · website · measurements and detailsHire a real human for real-world verification, product testing, AI output review, and errands.
MCP endpoint :https://humanforai.dev/mcp · website · measurements and detailsHire real humans for tasks agents can't do alone. 36 tools for the full hiring lifecycle.
MCP endpoint :https://humanpages.ai/mcp · website · measurements and detailsReal human judgment as agent tools — ask a question, get a structured human answer back.
Package npm :@getabrain/mcp-server · website · measurements and detailsHire verified humans for real-world tasks via API or MCP. 14 tools, free API key.
MCP endpoint :https://haas.my/api/mcp · measurements and detailsAI agents hire verified human creators to post on real social accounts.
MCP endpoint :https://roosteragents.ai/agent-economy/mcp · website · measurements and detailsHuman-in-the-loop for AI coding agents — ask questions, get approvals via Slack.
MCP endpoint :https://mcp.lassare.com/mcp · website · measurements and detailsProve a real, unique human performed an action; mint a signed, verifiable Proof-of-Human credential.
MCP endpoint :https://mcp.5arz.com · website · measurements and detailsFederal environmental records near any US location, with dates and provenance; never a safety score.
MCP endpoint :https://env.agentlookups.ai/mcp · website · measurements and detailsJPL-referenced Human Design charts for AI agents: bodygraph, transit, composite, Penta, DreamRave.
MCP endpoint :https://api.humandesignhub.app/mcp · website · measurements and detailsTwo independent AI models read a GPR, locate or pipe scan and flag the do-not-core call.
MCP endpoint :https://gtfi.ai/mcp · website · measurements and detailsSource-linked 2026 US duty and landed cost facts for AI agents: layered tariffs, MPF and HMF.
MCP endpoint :https://winter-river-47fc.contentforge-press.workers.dev/mcp · measurements and detailsAdvanced text styling to preserve semantic human flow.
MCP endpoint :https://ai-humanizer-mcp.vercel.app/api/mcp · measurements and detailsPremium agentic endpoint for ai-humanizer-mcp.
MCP endpoint :https://api.m2mcent.com/ai-humanizer-mcp/sse · measurements and detailsBodygraph, centres, channels, incarnation cross, penta and group overlay.
MCP endpoint :https://mcp.astroway.info/mcp/human-design · website · measurements and detailsHuman judgment for AI agents: discover capabilities, get quotes, and track paid human tasks.
MCP endpoint :https://mcp-production-ff29.up.railway.app/mcp · website · measurements and detailsHumanize AI text to bypass GPTZero, Turnitin, Originality.ai. Stealth, Academic, SEO modes.
MCP endpoint :https://texthumanizer.pro/mcp · 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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