Explore APIs
Every pay-per-call x402 API we can find, ranked by what agents actually pay for. No accounts, no API keys.
- Projects
- 4.5K
- Paid endpoints
- 106K
- Paid calls · 30 days
- 1M
- Launched here
- 0
All projects
4,273 results- Zzlurp.aiSearch & web
Scrape any public URL to clean markdown
Basezlurp.aifrom $0.0051 endpoint - x402-gatewayCrypto & DeFi
x402-gateway tool: wallet_token_risk (market: agoragentic)
Basex402.freeq.onefrom $0.001155 endpoints - Xx402-next-mainnet-wheat.vercel.appOther services
Access to protected content
Basex402-next-mainnet-wheat.vercel.appfrom $0.0012 endpoints - Xx402-dataviz-poc.theliminalguy.workers.devImages, audio & video
Render a bar/line/area chart to SVG (v2 discovery probe)
Basex402-dataviz-poc.theliminalguy.workers.devfrom $0.011 endpoint - WWorkBrain Decision IntelligenceSearch & web
Inspect the latest reviewed cyber event with public sources, affected entities, confidence, freshness, decision significance, and evidence-bearing relationships in structured JSON
Baseworkbrain.allthedills.comfrom $0.011 endpoint - Wwebhook-api-production-4378.up.railway.appDeveloper tools
Register a webhook endpoint
Basewebhook-api-production-4378.up.railway.appfrom $0.012 endpoints - Wwatchevelive.comOther services
Eve’s RWA print: which official number is the actual (T-bill, gold, NAV). Call for official prints, not casino coins.
BasePolygonArbitrum+10watchevelive.comfrom $0.051 endpoint - Wwalcert.globalscoreagent.comCrypto & DeFi
Before hiring or paying an ERC-8004 agent, grade the controlling wallet's funding origins (CEX, bridge, mixer, organic) A-F. POST wallet_address; signed certificate + Celo on-chain anchor. $0.05 USDC.
BaseEVM chain 42220BNB Chainwalcert.globalscoreagent.comfrom $0.052 endpoints - Vverza.devOther services
South African SA ID number validation: Structural validation of a South African identity number with safe decode: Luhn check digit, birth date, gender and citizenship segments (citizen or permanent resident). The structural step in KYC, KYB and customer onboarding or due diligence workflows: derive date of birth, age, gender and citizenship without storing the identity. Run it before a paid regist
Baseverza.devfrom $0.012 endpoints - JJSON Schema ValidatorData & research
Validate JSON data against a JSON Schema (draft-07, Ajv). Returns valid + detailed errors with instance paths.
Basevalidate.yankii.frfrom $0.011 endpoint - PParse a User-AgentSearch & web
Break a User-Agent string into browser, engine, operating system (each with a version) and device type. Unidentifiable components are reported as null.
Baseuseragent.openverbs.comfrom $0.0023 endpoints - WWebsite technology stack lookupSocial & people
Detect the technology stack a website runs on. Given a domain, returns the software and services it uses (CDN, analytics, frameworks, CMS, payment, hosting, security) grouped by category, plus a domain rank, last-seen date, country and public social links. Unknown domain returns found=false.
Baseurltrust.openverbs.comfrom $0.0043 endpoints
url2mdSearch & webPDFs, JavaScript pages and ordinary HTML as clean Markdown. Pays a page's x402 toll for you. Follows robots.txt.
Baseurl2md.iofrom $0.0051 endpoint- LList unitsDeveloper tools
List the supported units and their metadata (abbreviation, measure, system, singular/plural names), optionally filtered to a single measure — a discovery endpoint for choosing valid `from`/`to` values.
Baseunit.openverbs.comfrom $0.0022 endpoints - Uuk-cm-kg.aiAI & agents
One paid call on uk-cm-kg.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://uk-cm-kg.ai/x402/receipt/{nonce}. Doctrine: https://agentic-x402.ai/.
Baseuk-cm-kg.aifrom $0.011 endpoint - Ttopic-scorerOther services
Pass/fail check: does the text rank within the top `min_rank` categories of its target taxonomy? Returns `pass`, the target's rank and gap to #1, the taxonomy's top five, and the unused phrases to work in. Use it as a content-pipeline gate. Paid, $0.05/call; read-only and safe to retry.
Basetopic-scorer.pixelcove.cofrom $0.052 endpoints - TTools APICrypto & DeFi
Lightweight utility API for agents and operators: DNS lookups, RDAP/WHOIS domain data, HTTP probes, page metadata extraction, cryptographic hashing, JSON validation, scheduled webhooks, and exotic endpoints (Base transaction decode, ENS resolve, USGS earthquakes, cron next-run, TLS certificate report). No shell access; outbound URL tools enforce SSRF protections.
Basetools.bip-rep.comfrom $0.011 endpoint - Ttollzone.osani-projects.workers.devOther services
Prediction-market divergence feed: the same event priced differently on Kalshi vs Polymarket. Returns matched events whose last prices differ by at least min_gap_pp points, with both venues bid/ask, the last-price gap and the executable gap (rich venue bid minus cheap venue ask), and a match-confidence score. The benchmark is the other venue price for the same event; matches are heuristic, so chec
Basetollzone.osani-projects.workers.devfrom $0.016 endpoints - PPrompt DemonImages, audio & video
Web page to clean text, title, links and metadata
Basestore.promptdemon.appfrom $0.012 endpoints - SStatEdgeOther services
StatEdge ATS records — historical against-the-spread trends for specific situations and teams
BaseSolanaPolygon+8stateedge.theaslangroupllc.comfrom $0.084 endpoints - Sstable-supabase-git-ben-test-agentcash-rou-586785-merit-systems.vercel.appCrypto & DeFi
List all Stablebase projects owned by the calling wallet.
Basestable-supabase-git-ben-test-agentcash-rou-586785-merit-systems.vercel.appfrom $0.011 endpoint - Ssource-claim-proof.mattskowronis.workers.devSearch & web
Verify whether a supplied public source page currently supports one atomic factual claim. Returns supported, contradicted, or insufficient-evidence plus source snippets, or explicit blocked/unreachable/unsupported states. Not a general fact checker or web search.
Basesource-claim-proof.mattskowronis.workers.devfrom $0.011 endpoint - SSCRIPTMASTERLABSOther services
Quant snapshot for AMC: Live quote, completed-session levels (20-day ceiling/floor, ATR 14, SMA 20/50/200, pivots, 52-week range, relative volume) and a two-provider close cross-check.
Basesml-quant-terminal.onrender.comfrom $0.024 endpoints - AAgent Screenshot HubImages, audio & video
Viewport or full page, optional element selector, dark mode and cookie banner removal. Returns base64 image plus a short lived fetch URL, byte size, load time and the final HTTP status of the page.
Baseshot.halowerk.comfrom $0.0042 endpoints - SShopify AI Rank CheckerSearch & web
Checks how well a Shopify store's products show up when AI shopping assistants such as ChatGPT, Gemini, Perplexity, Grok, and Copilot search for products, and reports the store's rank and its closest competitors. Searches Shopify's real Global Catalog - the same product index AI assistants read from.
BaseSolanashopify-ai-rank-checker.underscoredone.comfrom $0.011 endpoint - SsendcheckCrypto & DeFi
SendCheck: pre-send verification of any EVM address on one chain (EIP-55 checksum, wallet-vs-contract, outgoing activity, balances, verdict). POST {address, chain}
Basesendcheck-x402.pennyforgeorg.workers.devfrom $0.011 endpoint - PPayment-Injection ScreenCrypto & DeFi
Payment-Injection Screen by Agentropolis: send text your agent is about to act on (tool result, web page, email, file). Flags payment-looking instructions: pay/transfer requests, fake licence or refundable fees, swapped wallets, token approvals, seed-phrase asks, hidden text. Returns clean/caution/likely_payment_injection with evidence. Advisory only.
Baseseenly-injection-screen.vercel.appfrom $0.011 endpoint - Ssanctions-screen.mick8511.workers.devCrypto & DeFi
OFAC sanctions check for one crypto address on any chain (BTC, ETH and EVM chains, TRX, SOL, XMR, LTC, BCH, USDT, USDC and more): sanctioned yes/no, and for a hit the SDN entity name, type, sanctions programs, DOB, nationality and OFAC link, with the SDN list publication date and age. Screening aid, not legal advice. Free sample: https://sanctions-screen.mick8511.workers.dev/sample
Basesanctions-screen.mick8511.workers.devfrom $0.013 endpoints - RRisk Events APICrypto & DeFi
Returns active US severe-weather alerts (National Weather Service) for a state or a lat/lon point: event (hurricane, tornado, flood, heat, winter storm...), severity, urgency, area, effective and expiry times, instructions. Sorted by severity.
Baserisk-events-api.onrender.comfrom $0.024 endpoints - Rrevert.wtfCrypto & DeFi
Paid hosted deterministic explanation for EVM/RPC/wallet/UserOperation/x402 errors. Send raw pasted error JSON, text, or revert bytes.
Baserevert.wtffrom $0.0011 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.