Explore APIs
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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4,372 results- WWhiteMagic receipt verifyData & research
WhiteMagic continuity-receipt verification: POST a signed receipt bundle and receive a verdict (TRUSTED / PROVISIONAL / INSUFFICIENT_EVIDENCE / UNTRUSTED) with coded errors and an optional signed verification receipt. Verification is stateless, offline-verifiable, and fail-closed; keyless /health, /info, /revocations and GET /anchors remain free.
Baseapi.whitemagic.devfrom $0.011 endpoint - Aapi.seneschal.spaceOther services
Single-fact: timestamp + age of the most recent Zcash block, plus hash, difficulty, and size.
Baseapi.seneschal.spacefrom $0.0013 endpoints - AA2A Nexus CanadaBuysCrypto & DeFi
CanadaBuys IT tender data
Baseapi.postulated.storefrom $0.012 endpoints - NNIMATRON COT SummaryData & research
Cheapest entry point: one-call COT snapshot. Report dates, top 3 crowded-long and crowded-short markets by 52-week COT index, biggest week-over-week spec move, universe counts. From the same 438-market CFTC dataset as the premium endpoints.
Baseapi.nimatron.comfrom $0.051 endpoint
Ned WatchAI & agentsWhy is this host failing right now? One call, no account: Ned probes it (DNS at three resolvers, its nameservers, TCP, TLS, HTTP timings, CDN and hosting fingerprints, cache and static splits, domain registration) and returns a diagnosis an agent can act on: findings and their strength, what was ruled out, and a ready runbook prompt. Page text never leaves Ned.
Baseapi.ned.watchfrom $0.051 endpoint- TThe Fine PrintOther services
How to cancel a subscription, or a store's return policy: steps, deadlines, fees, catches, official source and date checked.
Baseapi.howtocancel.aifrom $0.012 endpoints - AAnansi Model AdvisorAI & agents
Cheapest LLM meeting your constraints (price/context/modality) PLUS every price change and deprecation in the window. Providers publish only today's catalog and overwrite it — the change history exists nowhere else
Baseanansidata.xyzfrom $0.015 endpoints - Aallooloo.ioAI & agents
One paid call on allooloo.io for $0.01 USDC: the surface's own statement of record (a market node: its list_nodes line; a product: its record of record; allooloo.io: the estate scale block), public-record only, with an EdDSA-signed receipt that resolves forever at https://allooloo.io/x402/receipt/{nonce}. Doctrine: https://agentic-x402.ai/.
Baseallooloo.iofrom $0.011 endpoint - Aaiarena.lolImages, audio & video
One minute-block of AI play-by-play for an AIARENA match. Procedural commentary lines plus TTS audio. $0.02 USDC per block, x402 on Base.
BaseSolanaaiarena.lolfrom $0.021 endpoint - AagmailAI & agents
Get an email address for your agent for one hour: name@agmail.shveik.dev, a name of your choice or a random one. Pay in stablecoins with x402 or MPP, no account and no card. Wait for the verification mail with one call and get the code or the link back. Receive only. Extend it by paying again.
BaseSolanaPolygonagmail.shveik.devfrom $0.021 endpoint - Aagentwholesale.vercel.appSearch & web
Search the live web for current information. Returns fresh structured organic search results with titles, URLs, snippets, domains, and ranks for agent research and retrieval.
Baseagentwholesale.vercel.appfrom $0.011 endpoint - AAgentResolverCrypto & DeFi
No-body $0.001 x402 settlement test for funded agents. Verifies the buyer wallet, facilitator, USDC payment path, and paid delivery end-to-end by returning a timestamped pong only after successful settlement.
BaseSolanaagentresolver.vercel.appfrom $0.0018 endpoints - Aagentproof-murex.vercel.appAI & agents
JSON repair for AI agents - fix malformed JSON and return structured output.
Baseagentproof-murex.vercel.appfrom $0.0012 endpoints - Aagentic-radar.aiAI & agents
One paid call on agentic-radar.ai for $0.01 USDC: the surface's own statement of record (a market node: its list_nodes line; a product: its record of record; allooloo.io: the estate scale block), public-record only, with an EdDSA-signed receipt that resolves forever at https://agentic-radar.ai/x402/receipt/{nonce}. Doctrine: https://agentic-x402.ai/.
Baseagentic-radar.aifrom $0.011 endpoint - AAgent Economy ReportCrypto & DeFi
Operational trust rating (AAA to D, trust line BBB) of any x402 service, as of today: tier, outlook, flags, uptime, organic paying agents, settled USDC, centrality. Sybil-resistant, computed daily from on-chain settlement on Base, Polygon, Arbitrum and Solana plus a liveness probe. Check a service before paying it. Free today-only JSON: https://agenteconomy.report/s/<host>.json
Baseagenteconomy.reportfrom $0.0052 endpoints
AgentAuditCrypto & DeFix402 services ranked by 30-day on-chain settlement volume, optionally by category.
BaseSolanaagentaudit.waltsoft.netfrom $0.011 endpoint- EEasy Reader AISearch & web
Fetch any public web page or PDF and return clean Markdown, plus title, description, author, publish date, JSON-LD and outgoing links. Built for LLM agents.
Baseagent-reader.gm-tools.workers.devfrom $0.0022 endpoints - Aagent-proxy.alchemy.comAI & agents
sfdsa
Baseagent-proxy.alchemy.comfrom $0.022 endpoints - Aagent-production-d9d8e.up.railway.appCrypto & DeFi
Verify that a Base transaction paid what you expected. Give a tx hash; get status (success/reverted/pending), confirmations, from/to, ETH value, L2 fee and every ERC-20 Transfer decoded with symbol and decimals. Optional to, token and minAmount params return verified=true/false plus the matching transfer. Live data from Base RPC. Use it before delivering goods or crediting a deposit.
Baseagent-production-d9d8e.up.railway.appfrom $0.0031 endpoint - Aa402test.pages.devData & research
Premium access data endpoint gated at $0.05 USDC
Basea402test.pages.devfrom $0.051 endpoint
Tap Water QualityOther servicesOfficial drinking-water file for an address or lat/lng (relocation / lodging due diligence). clear/caution/avoid from EPA, Hub'Eau, or JMP. Never invents grades.
Basezini-x402.wouldzini.workers.devfrom $0.021 endpoint- Xx402-watcher-api-main.jpgame-intel.workers.devSearch & web
Daily digest and market analysis report of the Japanese game industry: original English-language analysis and news summaries curated from Japanese-only sources, with a link to every original article. Updated once per day. No API keys, no sign-up — pay per call in USDC on Base via x402.
Basex402-watcher-api-main.jpgame-intel.workers.devfrom $0.021 endpoint - Xx402-fieldsAI & agents
Extract structured fields (email, phone, dates, amounts, invoice numbers, …) from any text via deterministic regex — no LLM, no API key. $0.02 USDC per call on Base.
Basex402-extract-wg5z.onrender.comfrom $0.021 endpoint - Xx402-api-24223879872.us-east1.run.appOther services
Validates an 18-digit Mexican CLABE (sent as a JSON body, not a query param): check digit, bank identification (Banxico/SPEI catalog), plaza, and account number.
Basex402-api-24223879872.us-east1.run.appfrom $0.021 endpoint - WWingman Agent GatewayAI & agents
Starter pack: an x402 USDC payment of $1 on Base mints 1,000 ▲. Card checkout at the same price mints 1,000 ▲.
Basewingmanprotocol.comfrom $1.001 endpoint - Wweverlabs.comData & research
Data evidence report for a submitted JSON sample: field presence, empty values, types, timestamps, source attribution and duplicate keys, with a signed receipt.
Baseweverlabs.comfrom $0.101 endpoint - VVendor Safety CheckDeveloper tools
Is this vendor or domain safe? One call runs cert, DNS, email security, ransomware leak-site listing and vendor status checks and returns a verdict (safe, caution, risk, incomplete). $0.04 USDC on Base. Not charged if every check fails or input is invalid.
Basevendor-safety.orioncmd.comfrom $0.041 endpoint - Uuk-charity-verify.iykykblog.workers.devData & research
Verify a UK charity against the Charity Commission for England and Wales register. Look up by registered charity number or name; returns registration status (registered/removed), registration date, charity type, latest reported income and income band, and a summary of charitable objects. Register data published under the Open Government Licence v3.0.
Baseuk-charity-verify.iykykblog.workers.devfrom $0.051 endpoint - DDeepline GTM APISocial & people
Enrich Company — merged 30+ field profile from Apollo, Crustdata, and PeopleDataLabs: revenue, headcount, industry, funding, valuation, tech stack, social profiles, SIC/NAICS codes, HQ address.
Basestable-deepline.devfrom $0.101 endpoint
SpawnXchangeCrypto & DeFiList your AI-generated code for other agents to buy: upload an artifact and list it for a flat fee — no account needed; your wallet is your seller identity.
BasePolygonspawnxchange.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.