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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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4,503 results- Mminingoperationswork.cyouOther services
One useful bounded localized-topic response for the exact URL, method, inputs and source snapshot. Original MIME/schema and provenance retained; unavailable or empty results collect nothing.
Baseminingoperationswork.cyoufrom $0.012 endpoints - Mmeta-api-router.johntaylor1online.workers.devOther services
Meta-API Router — intelligent API routing
Basemeta-api-router.johntaylor1online.workers.devfrom $0.051 endpoint - WWicked MemoryCrypto & DeFi
Semantic search over an agent's own persistent memories (wallet-scoped). Free with a valid x-api-key.
Basememory.wickedapi.comfrom $0.0011 endpoint - IInAIMediaGeneratorImages, audio & video
Autonomous e-commerce media generator: polish a product image URL into a studio catalog photo. Freemium then 0.50/1.50 USDC on Base. Ethical Exclusion applies.
Basemediagenerator.inrits.techfrom $0.501 endpoint - DDeterminantDeveloper tools
Compute the determinant of a square matrix via Gaussian elimination with partial pivoting. A non-square, ragged or empty matrix is a clean 400; a singular matrix simply returns 0.
Basematrix.openverbs.comfrom $0.0041 endpoint - LLocus x402 ServicesOther services
Locus public pay-per-use API
Basemapbox.x402.paywithlocus.comfrom $0.0041 endpoint - AAgent Email CheckAI & agents
DNS and list based verification. Never claims that a mailbox exists without evidence: without an SMTP probe the verdict for a routable address is "unknown", not "valid".
Basemailcheck.netzhandwerker.defrom $0.0011 endpoint - Llily.owmini.comOther services
Top active Polymarket prediction markets by volume, with live implied probabilities + one-line read
Baselily.owmini.comfrom $0.011 endpoint
XR-LedgerCrypto & DeFiXR-Ledger account statement for an XRPL address
xrplBaseledger.xrpl-utilities.io—1 endpoint- Lleaderboard.0000402.xyzSocial & people
Pay $0.01 USDC to create a leaderboard or add, update, or delete one entry. Use a secret leaderboard_key UUID to continue writing to the same board. If value is null, the named entry is deleted. Public pages stay free at GET /leaderboard/{slug}. Network: Base Mainnet. Each request writes one named score and returns the board key and URLs.
Baseleaderboard.0000402.xyzfrom $0.011 endpoint
Kings Key AI Evaluation APIAI & agentsAI exam scoring for agents: submit any text and get Accuracy, Compliance, and Engagement scores (0-100), a pass/fail verdict, and a summary. $0.05 USDC per exam. Use when you need independent verification of an agent's output quality before trusting or paying for it.
Basekings-key-eval.onrender.comfrom $0.051 endpoint- Xx-preflightOther services
X Preflight: read a draft post against X's open-sourced ranking code. Returns what is already settled before you post, whether it enters the pool strangers are drawn from, how long it stays retrievable, which filters delete it, and which gates nobody can know in advance. Every claim cites a file and line in X's published source. Never writes the post. Nothing stored.
Basekevinhoff.comfrom $0.011 endpoint - AAgent Kalender HubAI & agents
Für Zahlungsziele, Fristen und Liefertermine. Die Antwort nennt das Ergebnisdatum, die Zahl der Kalendertage und jeden übersprungenen Tag mit Grund.
Basekalender.netzhandwerker.defrom $0.0011 endpoint - DDecode a JWTCrypto & DeFi
Decode a JSON Web Token WITHOUT verifying its signature and return the header, payload and signature. A structurally malformed token is rejected before payment. Never trust a decoded payload you have not verified.
Basejwt.openverbs.comfrom $0.0042 endpoints - GGEDX402 JobsImages, audio & video
Rendered page as markdown via Browser Run. POST { url } only. Returns result. No Firecrawl credits. Integrators: POST /v1/firecrawl/scrape — GET /v1/models?bundle=browser.
Basejobs.gedx402.comfrom $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 - Iirb-precedent-api.canvas-cart.workers.devSearch & web
Full text of one IRS Internal Revenue Bulletin document (Revenue Ruling, Revenue Procedure, Notice, Announcement, or Treasury Decision), 2003 to present. Get the id from GET /search?q=<keywords>. Use this when you need the complete, verbatim text of a specific IRS guidance document for tax research, not a summary.
Baseirb-precedent-api.canvas-cart.workers.devfrom $0.011 endpoint
IPPulseDeveloper toolsIP geolocation, ASN and reputation lookup: VPN/Tor proxy, hosting and botnet C2 flags with an abuse score, for any IPv4 or IPv6 address.
BaseSolanaippulse.waltsoft.netfrom $0.0051 endpoint- IInstagram Profile & PostsImages, audio & video
Page through an Instagram account's posts by username — captions, like and comment counts, media type, video duration, image and thumbnail URLs, post permalinks, tagged users and location, plus a cursor for the next page. Instagram posts feed, reels listing, creator content history, social post data. No API key.
BasePolygonArbitrum+1instagram.use.x402atlas.comfrom $0.022 endpoints - AAlgono InferenceCrypto & DeFi
Low-cost OpenAI-compatible Responses API inference over Solana USDC x402.
Solanainference.algono.cofrom $0.0021 endpoint - Iident.halowerk.comCrypto & DeFi
Creates a five-minute inbound SMS lease through a configured licensed provider, polls received messages, and releases the number upstream on cancellation, expiry or failed x402 settlement. Twilio is supported directly; an HTTPS bearer-token lease provider can also implement the documented generic contract. Messages and lease metadata are removed after expiry.
Baseident.halowerk.comfrom $0.0061 endpoint - HHTTP Header CheckerData & research
Sends a request to a web address you provide and reports back everything the server said in response: the status code, all the response headers, how many times it got redirected, and how long the whole thing took.
BaseSolanahttp-header-checker.underscoredone.comfrom $0.011 endpoint - Hhmo.payapi.marketOther services
UK HMO licence check by postcode and house number. Returns whether the property is a licensed House in Multiple Occupation.
Basehmo.payapi.marketfrom $0.022 endpoints - CCompany Hiring MonitorDeveloper tools
Current public Lever job openings, counts by team, department, location, commitment and workplace type. Optional since ISO timestamp filters openings by creation date. No account or API key required.
Basehiring-monitor.latamfx.workers.devfrom $0.0021 endpoint - HHash dataCrypto & DeFi
Compute a cryptographic digest (SHA-2, SHA-3, BLAKE2, and legacy SHA-1/MD5/RIPEMD-160) of some data. The input may be utf8/hex/base64/base64url and the digest is returned as hex/base64/base64url.
Basehash.openverbs.comfrom $0.0022 endpoints - LLocus x402 ServicesOther services
Locus public pay-per-use API
Basegroq.x402.stage.paywithlocus.comfrom $0.0051 endpoint
AmbrSocial & peopleAmbr (ambr.run): create a Ricardian contract that an AI agent signs on behalf of its principal, a person or company. Call it when your agent agrees a deal with another party (an API or compute service, a purchase, a subscription, or a delegation of authority) and needs a signed written record. Returns legal text and machine-readable JSON bound by one SHA-256 hash, plus reader and sign links; the p
Basegetamber.devfrom $0.201 endpoint- Ggenworks.comOther services
NACA 4/5-digit airfoil family as STEP or IGES NURBS curves (digits, chord, points, tolerance)
Basegenworks.comfrom $0.031 endpoint - Ggenbase.funImages, audio & video
Create image using GPT-Image-1 AI model
Basegenbase.funfrom $0.021 endpoint - Ffuse402.vercel.appCrypto & DeFi
Real-time Fuse payment network statistics — transaction volumes, network health, gas tiers, FUSE token price.
Basefuse402.vercel.appfrom $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.