Google tells you what exists. Faceabot tells you what holds up.
Validate and verify data from other agents before acting on it. Zero LLM costs.
Package npm :@agenson-horrowitz/agent-output-guard-mcp · website · measurements and detailsScan prompts, tool definitions and model output for injection, and guard agent tool calls.
Package npm :prompt-protection · website · measurements and detailsAcoustic deepfake detector and voice biometrics auditor.
MCP endpoint :https://deepvoice-guard-mcp.vercel.app/api/mcp · measurements and detailsPremium agentic endpoint for deepvoice-guard-mcp.
MCP endpoint :https://api.m2mcent.com/deepvoice-guard-mcp/sse · measurements and detailsFX protection for SMEs — price Guards, live spot/forward rates, settlement dates, and more.
MCP endpoint :https://api.currencyguard.com/mcp · website · measurements and detailsCDN and edge computing latency monitor analyzing network hops.
MCP endpoint :https://edge-latency-guard-mcp.vercel.app/api/mcp · measurements and detailsDeterministic JSON Schema validation with exact violations and conservative type normalization.
MCP endpoint :https://contract-guard-production.up.railway.app/mcp · website · measurements and detailsPolicy review and purchase discovery for AI-agent commerce actions.
MCP endpoint :https://agent-commerce-guard.vercel.app/api/mcp · website · measurements and detailsPremium agentic endpoint for agentic-ip-reputation-guard-mcp.
MCP endpoint :https://api.m2mcent.com/agentic-ip-reputation-guard-mcp/sse · measurements and detailsVerify an agent's output before you pay: JSON Schema checks, signed receipts. Free during launch.
MCP endpoint :https://fastapi-service-5ag4.onrender.com/mcp · website · measurements and detailsHKDF-SHA256 output length, input discarded
MCP endpoint :https://agent-observatory-sensor.nolimit-observatory.workers.dev/s/hkdf-len/mcp · website · measurements and detailsPunycode output length band, host discarded
MCP endpoint :https://agent-observatory-sensor.nolimit-observatory.workers.dev/s/puny-len/mcp · website · measurements and detailsVerify before you act: deps-check, x402-preflight, json-repair & url-read for agents.
MCP endpoint :https://guard.fabtally.com/mcp · website · measurements and detailsIs it safe to sign? Checks agent transactions, permits, tokens and approvals: green/orange/red.
MCP endpoint :https://presign-guard.fizzl.eu/mcp · website · measurements and detailsMCP tools for x402 readiness, paid-path probes, launch packs, and trust receipts.
MCP endpoint :https://x402-resource-scanner.vercel.app/mcp · website · measurements and detailsFree spend guardrails for AI agents: approve/deny/ask_user, caps, dupes.
MCP endpoint :https://a2awire.com/mcp/connectors/spend-guard/http · website · measurements and detailsPre-purchase trust, pricing and budget decisions for AI agents buying APIs and MCP tools.
MCP endpoint :https://pkctqxeydfuiupadaoov.supabase.co/functions/v1/procurement-mcp · website · measurements and detailsUSDA P&S checks for livestock buyers, dealers, agencies and packers before sale or onboarding.
MCP endpoint :https://usda-ps-counterparty-guard.hwinkler5866.workers.dev/mcp · website · measurements and detailsStructured Output MCP Agent
MCP endpoint :https://structured-output-agent.getvda.ai/mcp · website · measurements and detailsClaude Schema Output Agent
MCP endpoint :https://structured-output-agent-89bcb0.getvda.ai/mcp · 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
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