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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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2,776 results
domainaudit.genexxis.comDeveloper toolsDomain registration and DNS in one call: RDAP registrar, created, updated, expires (days left), status codes, nameservers, DNSSEC, plus DNS A, AAAA, MX, NS, TXT and CAA records.
Basedomainaudit.genexxis.comfrom $0.0038 endpoints- Rroute-a-worker.frostskynet-api.workers.devAI & agents
Converts text, JSON or JSONL to cleaned JSONL using fixed rules. Removes empty, short and duplicate rows; can repair some encoding issues. No AI or CSV parsing.
Baseroute-a-worker.frostskynet-api.workers.devfrom $0.0053 endpoints - Mmarketplaceforaiagents.comSearch & web
Google Search API: Give a query, get ranked organic results with title, link, snippet, plus knowledge graph and related searches. $0.003 USDC per call on Base.
Basemarketplaceforaiagents.comfrom $0.0032 endpoints - AagentdropAI & agents
OpenAI-compatible chat completions on frontier models: GPT-6.1 Sol and Terra, GPT-5.5, Claude Sonnet 5.5 and Haiku 5.5, Gemini 3.8 Flash, Grok 4.7, GPT-6 Luna, gpt-oss.
Baseagentdrop.fyifrom $0.0013 endpoints - PPage LinksCrypto & DeFi
Fetch a reviewed public page and return its links with resolved absolute URLs and anchor text, the canonical URL, the declared meta robots directive, and how many links leave the host. Relative hrefs are resolved against the page, so a caller never has to guess a base.
Baseapi.zfinia.comfrom $0.00414 endpoints
IP Lookup APISocial & peopleIP Lookup API. Enrich an IPv4 or IPv6 address with geolocation, ASN, ISP, organization, reverse DNS, timezone, and proxy/mobile/hosting indicators. Useful for security, fraud checks, abuse triage, bot detection, traffic enrichment, and infrastructure investigation. Paid per call via x402.
Basetools.ipintel.aifrom $0.0019 endpoints- SStraits.live premium dataMarkets & finance
AI-assisted Strait of Hormuz daily situation brief as structured JSON: prose summary, bullets, and key figures, by date or latest, with archive access by date.
Basestraits.livefrom $0.017 endpoints - Xx402-api-production-bd43.up.railway.appOther services
Current BTC price in USD
Basex402-api-production-bd43.up.railway.appfrom $0.0058 endpoints - OOld Colony Web Agent ServicesCrypto & DeFi
For $0.002, privacy-conscious email preflight: submitted addresses and request bodies are not intentionally logged in routine application telemetry (full address still reaches our server). Inspect syntax, DNS/MX, listed disposable domains and provider typos; receive structured decisions. API reverse-proxy access logging is disabled; infrastructure/payment providers may keep records. No zero-retent
Baseapi.oldcolonyweb.comfrom $0.0025 endpoints - Xx402 Trust ScoreCrypto & DeFi
Trust score (0-100, grade A-F) for any x402 endpoint, cataloged or not: 30d uptime, 402-envelope compliance, latency, age, real on-chain USDC settlement volume, and price stability, with a full auditable breakdown. Uncataloged endpoints are live-probed on first query and auto-adopted. Know before you pay.
Basex402-trust.comfrom $0.0059 endpoints - Ggblin.digitalAI & agents
Call before your agent pays an x402 service it has not used recently: is that endpoint actually alive? Liveness of the ~200 most recently updated Bazaar listings, probed in rotation (each about every 36h): HTTP status, latency, last-OK time and consecutive failures per endpoint. Measurements only, no judgements; the probes never pay. Free aggregate view: gblin-mcp.gblin-mcp-worker.workers.dev/cata
Basegblin.digitalfrom $0.0014 endpoints - GGEDX402 ChatAI & agents
OpenAI-compatible chat completions across many open models, paid per call in USDC with no API key. POST { model, messages, max_tokens? } and pick model from GET /v1/models (fast, smart, code, reasoning and 70B tiers, among others). The price is set from the model's rates and your request size, so short prompts on small models cost the least; the 402 shows the exact amount before you pay. Hero: GET
Basechat.gedx402.comfrom $0.0051 endpoint - JJapan Business Day APIOther services
Japanese traditional calendar for a date: rokuyo (taian/butsumetsu... lucky days used for weddings, funerals, contracts), Japanese era (Reiwa) date, old lunisolar calendar date incl. leap months, 24 solar terms (sekki) and year eto. Verified against the National Astronomical Observatory of Japan.
PolygonBasejapan-business-day-api.matchan962.workers.devfrom $0.00510 endpoints - Ggeo.halowerk.comOther services
Tests planar point containment with the even-odd rule. Missing facts are returned as null and named in unavailable_fields where applicable. Derived values disclose their method; source-backed values disclose source, time window and age.
Basegeo.halowerk.comfrom $0.00310 endpoints - Tteuerung.halowerk.comOther services
Food inflation dashboard with the headline category rate, movers and source-based context. Example: geo DE. Published periods and gaps stay visible. Official indices are not retail shelf prices.
Baseteuerung.halowerk.comfrom $0.00212 endpoints - Llookup_carrierSocial & people
Use this when you already have a carrier's USDOT number and need its current profile: safety rating, authority status, insurance flags, fleet size. Returns Active, Inactive, and Pending carriers alike. Billed only when the number resolves to a real carrier; an unknown number is free.
SolanaBasePolygonfmcsa-mcp-843680657471.us-central1.run.appfrom $0.0122 endpoints
cryptofeed402Crypto & DeFiPerpetual futures funding rates and open interest (Hyperliquid), live: the 10 perps with the most extreme funding rate now (over $1M 24h volume), each with annualized funding APR and open interest in USD, plus the current funding rate for a BTC/ETH/SOL/HYPE/NEAR/AAVE watchlist. Use it to spot crowded longs or shorts, squeeze risk and funding-carry candidates. Failed calls are never charged. JSON.
Basecryptofeed402.sitefrom $0.00213 endpoints
api.liquidagent.aiImages, audio & videoSearch Mint & Marquee for gifts and collectibles: products that match what the person wants, under their budget, with price, photo, a short description and a link to buy. Custom 3D printed collectibles and gifts: figurines, statues, keychains, bag tags and branded merch. Soccer, anime, crypto, hypebeast and ancient-art collections.
BaseSolanaPolygon+1api.liquidagent.aifrom $0.00119 endpoints- AAestheticDataAI & agents
Curated aesthetic-medicine brand directory, partially verified. One call returns the full core catalog of filler, toxin, and thread brands: name, manufacturer, country, categories, certifications, treatment areas, and verification status. Some fields may be null.
Baseapi.aestheticdata.iofrom $0.0013 endpoints - CCueFrameImages, audio & video
Validate a composition body without saving it (dry-run)
Baseapi.cueframe.aifrom $0.0114 endpoints - GgigsaiCrypto & DeFi
Call when you need the readable content of a public web page: returns clean markdown (title, headings, lists, links; scripts and navigation removed), up to 100k characters. Pages that fail (404, blocked, timeout) are not charged.
Basegigsai.xyzfrom $0.0025 endpoints - Aagent-utils-x402-production.revenue-agent-jw.workers.devCrypto & DeFi
OFAC sanctions screening for crypto wallet addresses: exact match against every digital currency address on the U.S. Treasury OFAC SDN list (BTC, ETH, USDT, USDC, TRX, SOL, LTC, XMR and more). Useful for compliance and AML checks before paying a counterparty or an x402 payTo. Up to 20 comma-separated addresses; returns sanctioned true/false, SDN name, programs, official link and list freshness. Er
Baseagent-utils-x402-production.revenue-agent-jw.workers.devfrom $0.0029 endpoints - CCombify ComputeImages, audio & video
Answer questions about an image or describe what it shows (Llama 3.2 11B vision), fixed price $0.008 USDC. Use this when the input is an image; use /chat for text-only questions. POST JSON body {image (required, base64 or data:image/... URI, max 4 MB decoded, PNG/JPEG/GIF/WEBP), prompt (optional question, defaults to describing the image), max_tokens (optional 1-512, default 256)}. Returns {text}.
Basecompute.combify.appfrom $0.0057 endpoints
blockint.aiCrypto & DeFiScreen one address (EVM, BTC, Tron, Solana, DOT, XRP, XLM, DOGE, LTC, DASH, STX, TON, Cosmos or wax:account) against the OFAC SDN list, Tether/Circle freezes (EVM, Tron, Solana) and C3 reports. Returns action BLOCK (OFAC SDN match), REVIEW (reported or frozen; current freeze = HIGH) or ALLOW_NO_REPORTS, riskScore, riskLevel, sanctions, freezes, reports, related domains, co-occurring addresses. NON
BaseSolanablockint.aifrom $0.016 endpoints- Eemail-verify-api-production-d262.up.railway.appDeveloper tools
Verify a single email: syntax, MX records, SMTP RCPT probe, catch-all, disposable, role-based, free-provider, typo suggestion, 0-100 score, and verdict.
Baseemail-verify-api-production-d262.up.railway.appfrom $0.0013 endpoints - Aagents.datamancer.ioCrypto & DeFi
VIN decode (x402; 402 first, $0.005, Base then Solana)
BaseSolanaagents.datamancer.iofrom $0.0051 endpoint
Address RiskCrypto & DeFiScreen an EVM wallet or contract address BEFORE paying it. Deterministic, keyless compliance / safety gate: checks the address against the OFAC sanctioned crypto-address list and a curated taint set (mixer, hack, scam) and returns a single BLOCK / REVIEW / ALLOW recommendation plus the matched sources, so an AI agent can decide whether to send funds. No API keys, no LLM, one x402 USDC micropayment
Basesanctions.cyberwarex.comfrom $0.0051 endpoint- Eemoji.todayOther services
Cast a paid vote for today's emoji election on emoji.today
Baseemoji.todayfrom $0.011 endpoint - TTraceFastCrypto & DeFi
TraceFast knowledge graph: what an Ethereum address is, as proven facts — wallet or contract, proxy and upgradeable or not, a token and its standard, and for a token contract whether it can pause, mint or blacklist and whether it ever did. Each fact names the block it was evaluated at; an absent fact is not proven. Ethereum mainnet only. Path address: 0x-prefixed, 40 hex. Attribute dictionary: htt
Basempp.tracefast.xyzfrom $0.00519 endpoints - OOfficial Macro & FX DataMarkets & finance
Use when an agent needs the official inflation rate (year-on-year consumer prices) for a country: Eurostat HICP for the euro area, EU and 36 European countries (incl. CH, NO, TR) and US CPI-U from the Bureau of Labor Statistics. Latest month plus up to 36 months of history, flash estimates flagged. Source named in every answer. Bad input: HTTP 400 before payment; outage is not charged.
Basex402-apis.pages.devfrom $0.0025 endpoints
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.