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Every pay-per-call x402 API we can find, ranked by what agents actually pay for. No accounts, no API keys.
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- Paid calls · 30 days
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AI & agents
15 results
AI Score paid scanAI & agentsPOST /api/scan — agent-readiness scan for a domain (~$0.01 USDC per call)
BaseBase Sepoliagetbags.appfrom $0.014 endpoints- Aagent-tools-7936.onrender.comAI & agents
Use before paying any x402 endpoint, so you don't pay a dead or mispriced one: checks it is alive, correctly payment-gated, its price/network/asset, latency, and whether it fits your max_price_usd. Sends one unpaid request, never pays. ~9% of paid listings we scanned were dead. Errors (never charged): 400 bad input, 422 source could not be fetched or parsed, 429 rate limited (30/min), 502 upstream
BaseBase Sepoliaagent-tools-7936.onrender.comfrom $0.0018 endpoints - Xx402-test.genesisblock.aiAI & agents
GenesisBlock: Current weather conditions for major global cities.
Base Sepoliax402-test.genesisblock.aifrom $0.0017 endpoints - EEvidence402AI & agents
Read a public static HTTPS webpage as clean text with headings, links, timestamp and content hash. Use to ground an answer or ingest documentation. Respects robots.txt; no JavaScript or login.
Base SepoliaBaseevidence402.onrender.comfrom $0.0057 endpoints - Ttollbooth-hello-testnet.sjwilliams8.workers.devAI & agents
Test endpoint for verifying x402 payment integration end to end. Returns a static greeting in the Agent Tollbooth standard response envelope. Not a data product — use it to smoke-test your x402 client for $0.001 before calling our compliance endpoints.
Base Sepoliatollbooth-hello-testnet.sjwilliams8.workers.devfrom $0.0011 endpoint 
BAGS Agent APIAI & agentsBAGS Agent API index — machine-readable directory of the agentic payment API, MCP server, and x402 payment surface.
BaseBase Sepoliastaging.getbags.appfrom $0.011 endpoint
Verify deliverable, code onlyAI & agentsVerify output another AI agent hands back, by code alone, for $0.005: no model call, answers in about a second. Recomputes the deliverable's written sums, totals, percentages, dates, weekdays, time spans, unit conversions, and list counts; checks lengths the task asks for; flags placeholders and prompt injection; measures words, items, and JSON shape. Signed receipt, tier lite. For every requireme
BaseBase Sepoliacrosscheckapi.comfrom $0.0051 endpoint- Xx402-ai-starter.vercel.appAI & agents
Access to protected content
Base Sepoliax402-ai-starter.vercel.appfrom $0.0051 endpoint - Nnickeljoke.vercel.appAI & agents
Premium AI joke generation
Base Sepolianickeljoke.vercel.appfrom $0.0051 endpoint - AAcme Listings (demo)AI & agents
Demo of Stilebase pay-per-page for AI agents: rental listings in Springfield with price, bedrooms and what's special about each home. Test USDC on Base Sepolia.
Base Sepoliademo.stilebase.comfrom $0.011 endpoint - Iismec-agent-tools.ismec.workers.devAI & agents
損益分岐点売上高・限界利益率・安全余裕率・目標利益達成売上高を、式の過程・前提つきで返す
Base Sepoliaismec-agent-tools.ismec.workers.devfrom $0.012 endpoints - Aapi.sandbox.brickken.comAI & agents
Prepare ERC-8004 agent registration. Prepare an unsigned ERC-8004 agent registration transaction.
Base Sepoliaapi.sandbox.brickken.comfrom $0.0051 endpoint - Aapi.agentincome.devAI & agents
AI text summarization
Base Sepoliaapi.agentincome.devfrom $0.011 endpoint - Xx402-agent-apiAI & agents
Example premium technology research report
Base Sepoliax402-agent-api-p7pe.onrender.comfrom $0.011 endpoint - Tthepocketoperator.comAI & agents
One Regelkartan pitfall row by id (GDPR, AI Act, ISO): rule, law, wrong, right; en + sv. Same data is free at thepocketoperator.com/pitfalls.json; you pay for the per-row API
Base Sepoliathepocketoperator.comfrom $0.0011 endpoint
Service data comes from the Coinbase CDP and PayAI discovery lists and refreshes every few hours. Usage is paid calls over the last 30 days. APIs launched here are verified by us; the rest are paid directly to their owners.