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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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70 results- PPulseScannerCrypto & DeFi
One block's fee recipient, gas use and burnt fees, with its consensus reward. PulseChain (chain id 369). $0.003 USDC per call.
Base Sepoliax402-staging.pulsescanner.iofrom $0.0035 endpoints - IISHOBData & research
Normalized scholarly metadata + abstract + full rights/attribution for one open-licensed document
Base Sepoliaai-data-archive.health-womens01.workers.devfrom $0.0013 endpoints - Aapi.agentmetric.appCrypto & DeFi
Live check of any Hyperliquid wallet from public data: account, positions, leverage, profit total/30/90 days, drawdown, trades and liquidations (90 days), risk with data gaps. Facts only, not investment advice, no guarantee of profit or safety.
Base Sepoliaapi.agentmetric.appfrom $0.091 endpoint - AAUTOGROK DeskSearch & web
Call when you need a cheap reachability/health check before a heavier fetch. Probes a public http(s) URL (HEAD, GET fallback): status, final URL, content-type, timing. No full body download (GET peeks ≤8KB). SSRF-safe public hosts only. Not for authenticated or private network URLs.
BaseBase Sepoliadesk.grokaiapps.comfrom $0.035 endpoints - Ttestnet-x402-api.karpak.xyzSearch & web
Search parking lots worldwide by name, place, setting, facility, amenity and status, or find the nearest to a point: a page of up to 100 lots with live free spaces, hourly prices in USD and distances, and per-country totals; sorted and nearby results come in one page
Base Sepoliatestnet-x402-api.karpak.xyzfrom $0.0014 endpoints - KKeenableSearch & web
Keenable SELECT for AI agents: one read-only SQL query over live web results (search, fetch and LLM field extraction), answered as a table. Write the query from https://select.keenable.ai/guide.md. Sign a ceiling (max_usd, default $0.10); you pay what the query cost, from $0.01.
Base Sepoliaapi-test.keenable.aifrom $0.101 endpoint - VVerify tx receipt for payoutOther services
Verify a Base/BSC transaction receipt for a payout or claim: status, block, sender, gas, decoded ERC-20 Transfer logs and a sha256 evidence digest. 0.01 USDC via x402 on Base. POST only. Free sample: /samples
BaseBase Sepoliacairnworks-verify.run402.comfrom $0.011 endpoint - Aatk-bazaar-linec-production.up.railway.appData & research
[$0.20 per article (Base Sepolia testnet USDC; example content, not published)] ATK Magazine EXAMPLE (draft, not published): [EXAMPLE] ATK VERIFY: three numbers on the ResearchAgent project map, checked against its source. Returns a JSON excerpt/placeholder of one example article.
BaseBase Sepoliaatk-bazaar-linec-production.up.railway.appfrom $0.202 endpoints - TteitenCrypto & DeFi
Returns the rows of one metric at one grain and dimension, optionally bounded by period, with what its rows are counted in and the scope notes the site publishes for it. Free for any dataset and grain the public site publishes; priced at its tier otherwise, and catalog lists every tier's price. Keys are the categorical dimensions catalog lists for the dataset, never a named entity; where a dataset
Base Sepoliateiten-mcp-staging.teiten-web.workers.devfrom $0.012 endpoints - PPeople's CourtSocial & people
Deterministic dispute-readiness report with supported lane, composition, published filing-fee quote, consent and evidence requirements, corpus compatibility, and timing warnings. No case is filed and no merits are assessed.
Base SepoliaBasepeoplescourt.aifrom $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 - TThe Tie Stablecoin IntelligenceCrypto & DeFi
Retrieve a seven-day USD-denominated report of Tether bridge flows on Ethereum. This is a bounded onchain stablecoin intelligence product backed by The Tie's data API.
Base Sepoliax402-stablecoin-data-demo.ryan-ee4.workers.devfrom $0.011 endpoint - TTest Search APISearch & web
No description yet.
Base Sepoliatest-org.onedoro.comfrom $0.051 endpoint - PPlot SupermarketSearch & web
Search published UK auction property listings. Omit q for latest active listings. Public source facts only; not a research report.
Base Sepoliaplotsupermarket.co.ukfrom $0.012 endpoints - 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.callmeter.devOther services
Paid skill agentutils.schema
BaseBase Sepoliaapi.callmeter.devfrom $0.021 endpoint - Xx402 PreflightOther services
Payability preflight: audits an x402 seller's 402 challenge
Base Sepoliax402.nodeventures.iofrom $0.0051 endpoint
url2mdSearch & webPDFs, JavaScript pages and ordinary HTML as clean Markdown. Pays a page's x402 toll for you. Follows robots.txt.
Base Sepoliaurl2md-testnet.url2md.workers.devfrom $0.0051 endpoint- Ssplitpack.netOther services
Find hard-to-source, discontinued, or obscure products and return ranked purchase-ready matches with evidence.
Base Sepoliasplitpack.netfrom $0.251 endpoint - Qquickly-techrepublic-modified-fate.trycloudflare.comSocial & people
Returns an indicative foreign-exchange mid rate for a currency pair such as usd-eur. Test endpoint (persona-agt1-d-bank-ai-prod) on Base Sepolia.
Base Sepoliaquickly-techrepublic-modified-fate.trycloudflare.comfrom $0.0011 endpoint - Ggraphrag-tsOther services
Entity/relationship graph over a synthetic audit corpus, with source excerpts.
Base Sepoliapay.ashesborn.cloudfrom $0.021 endpoint - IImport PreflightOther services
Validate a Shopify product CSV before import and detect structural and Shopify-specific import problems. Also supports generic CSV structural validation.
Base Sepoliaimport-preflight-development.import-preflight-4618bf7e.workers.devfrom $0.0051 endpoint - EExuviaSearch & web
Exuvia: buy an already-solved answer instead of re-deriving it. Find answer ids for free at GET /search?q=<question>. Payment goes directly to the seller.
Base Sepoliaexuvia.marketfrom $0.011 endpoint - Aapi.niftibot.comSocial & people
UK Companies House Filing Monitor (Testnet): Company profile and compliance verdict
Base Sepoliaapi.niftibot.comfrom $0.011 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
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.