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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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4,273 results- 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 - 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 - 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- Aagent-proxy.alchemy.comAI & agents
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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 - WWeb Search for AgentsSearch & web
Use when an agent needs fresh web results for a question. Send a plain query and get up to 10 ranked results with title, URL, publish date and a short excerpt, ready to cite. Fast, no account and no API key on your side; pay per call with x402. Results come from a licensed search provider and are not cached across customers.
BaseBase Sepoliax402op-edge-39830b.fly.devfrom $0.0051 endpoint - MMarket Hours APIMarkets & finance
Returns whether a stock exchange or futures market is open at a given time, the session type (open, break, closed), and the next open and close times in UTC and local time.
Basemarket-hours-api.onrender.comfrom $0.021 endpoint - BBase Token Check by LIN DeskCrypto & DeFi
Use when an agent needs a quick ERC-20 contract check on Base before trading or accepting a token: name/symbol/decimals/total supply, owner and whether ownership is renounced, EIP-1967 / legacy proxy (upgradeable) detection, flags. $0.003 per call, USDC on Base (x402). Read-only; not security advice. Non-contract addresses and upstream errors are not charged.
Baselin-desk-x402.lindesk.workers.devfrom $0.0031 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- AAdalia UndertowCrypto & DeFi
Latest liquidation map for one coin: price clusters of leveraged liquidation levels with each cluster's share of the map and its exact (on-chain) share, the reference price, open interest on-chain and on centralized exchanges, and the exact vs modeled fraction. Coins: BTC, ETH, SOL, XRP, DOGE, BNB, AVAX, LINK, LTC, ADA, SUI, WIF.
Basex402.adalia.eefrom $0.011 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-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
DevX VoiceImages, audio & videoSpeech to text for agents: send an audio URL, base64 or raw audio (WAV, MP3, FLAC, OGG, M4A, WebM; up to 20 min / 10 MB) and get the transcript, language, timed segments and WebVTT subtitles. Optional task=translate gives English text. $0.002 USDC per started minute on Base; failed or silent audio is not charged. Whisper large-v3-turbo. By DevX.
AvalancheBasePolygon+2voice.madebydevx.comfrom $0.0014 endpoints- 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- SSolana DeFi IntelligenceCrypto & DeFi
The real best Solana DEX pools. Same top-pools feed a free API returns, but wash-traded and fake-volume pools are filtered out and the rest ranked by risk-adjusted fee yield (Raydium/Orca/Meteora). Returns clean, decision-ready pools plus an `excluded` list showing exactly which pools were dropped and why. For liquidity, yield and MEV agents that can't trust raw volume numbers.
BaseSolanasoldefi.thomenz.mefrom $0.021 endpoint - Ssignal.keelbase.ioOther services
Complete latest daily Keelbase Signal records and full synthesis.
Basesignal.keelbase.iofrom $0.031 endpoint - SSignal FoundryMarkets & finance
Use for source-backed Item 1A risk-disclosure changes for one issuer. Pass exactly one ticker or CIK; optionally filter by materiality (HIGH, MEDIUM, LOW) and classification. A successful nonempty request returns all matching RELEASE signals from the latest eligible frozen comparison in Signal Foundry, not necessarily the issuer's latest SEC filing. $0.05 USDC per request, not per signal.
Basesignal-foundry.replit.appfrom $0.051 endpoint - Sscotland-charity-verify.iykykblog.workers.devData & research
Verify a Scottish charity against the OSCR Scottish Charity Register. Look up by Scottish charity number (SC...) or name; returns registration status verdict (registered/removed), registered date, ceased date for removed charities, constitutional form, regulatory type, and charitable purposes. Scottish register data published by OSCR under the Open Government Licence v3.0. This is the Scottish reg
Basescotland-charity-verify.iykykblog.workers.devfrom $0.051 endpoint - RRegion FetchImages, audio & video
Retrieve a public HTTPS URL from the US, Germany, Japan, Brazil, or India. Use HTTP mode for lightweight retrieval, or browser mode to render JavaScript pages. For pages with bot protection, set max_tier to L2 for managed unblocking at $0.05 USDC; L0/L1 costs $0.02 USDC. Returns the fetched body and an Ed25519-signed receipt for provenance.
Baseregionfetch.devfrom $0.021 endpoint - RReformed ConnectOther services
Fetch worship service times for one Reformed church by stable UUID. Only the schedule fields already shown on the public share page, plus name, place, timezone, and language. Base USDC, $0.01 per church.
Basereformedconnect.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.