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Paid agent tools, zero API keys: crypto, weather, translation, web intel, x402 discovery (USDC/Base)
Package npm :navi-x402-mcp · website · measurements and detailsVerify signed x402 payments; treasury-scoped settlement is irreversible.
MCP endpoint :https://x402-agent-pay.com/facilitator/mcp · website · measurements and detailsFree tools: x402 endpoint directory + probe, on-chain x402 demand signal, sudoku, API pricing.
MCP endpoint :https://qf-api.quietforge-studio.workers.dev/mcp · website · measurements and detailsInspect and validate an x402 endpoint before an autonomous agent spends USDC.
MCP endpoint :https://x402.chikocorp.com/mcp · website · measurements and detailsDiscover x402 APIs by capability, price & trust. Powered by x402Scout.
MCP endpoint :https://x402-scout-relay.onrender.com/sse · website · measurements and detailsPreflight x402 payment compatibility with structured risk evidence and remediation guidance.
MCP endpoint :https://intelligence.inversolabs.us/mcp · measurements and detailsMeasured x402 ecosystem data, facilitator reliability, and live endpoint checks.
MCP endpoint :https://multichain-rpc.clankerceo.workers.dev/mcp · website · measurements and detailsDiscover and quote x402-paid Base intelligence products.
MCP endpoint :https://prime-agent-x402-intelligence.onrender.com/mcp/ · website · measurements and detailsPaid x402 MCP tool for stress-testing launch and marketing copy before publication.
MCP endpoint :https://launchcheck-x402.fly.dev/mcp · website · measurements and detailsCalibrated intelligence via x402 (USDC Base). ERC-8004 #84581: 272 payments, 49 wallets.
MCP endpoint :https://mcp.hergertsynthora.com/mcp · website · measurements and detailsDeFi yields, staking routing, semantic research & security intel via x402 micro-payments on Base
MCP endpoint :https://mcp.askew.network/mcp · website · measurements and detailsDiscover and call 2,000+ x402 machine-payable services through one graded API key + gateway.
MCP endpoint :https://graded.sh/mcp · website · measurements and details~17 tools; HT packs $50/$100/$150. tools/list free; tools/call USDC Base x402. Not financial advice.
MCP endpoint :https://desk-x402.desk-x402-gh.workers.dev/mcp · website · measurements and detailsChecks x402 Bazaar resource listings against the public discovery catalog and flags drops.
MCP endpoint :https://x402-listing-monitor.acjlabs.com/mcp · website · measurements and detailsFree agent discovery + paid x402 research (outline 0.01 / brief 0.02 USDC Base).
MCP endpoint :https://x402.devvizion.com/mcp · website · measurements and detailsDiscover x402 paid APIs and inspect fresh payment requirements before authorizing spend.
MCP endpoint :https://mcp-x402-gitlab-main.onrender.com/mcp · website · measurements and detailsDiagnose x402 seller endpoints: what is wrong with your 402 challenge, and how to fix it.
MCP endpoint :https://x402-doctor.tsharpe.workers.dev/mcp · website · measurements and detailsHumanMirror x402 MCP: paid Safe Preflight, execution evidence and machine microtools on Base/USDC.
MCP endpoint :https://humanmirror.fr/api/x402/mcp/ · website · measurements and details16 x402 MCP services for security, invoices, web, commerce, routing and crypto.
MCP endpoint :https://mcp.dropenginehq.com/api/agent-services · 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 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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