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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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587 results- Xx402helper.xyzOther services
Find US court cases, opinions and dockets naming a business, with case name, court, date, citation, docket number and nature of suit.
SeiBaseSolana+2x402helper.xyzfrom $0.0016 endpoints - Ssimilarity.openverbs.comCrypto & DeFi
Sørensen-Dice similarity coefficient in [0,1] over character bigrams — robust to word order and minor edits.
Basesimilarity.openverbs.comfrom $0.00210 endpoints - BBacon ServicesImages, audio & video
Use when an agent needs a web-ready image: shrinks a PNG, JPEG or WebP to a maximum width and converts it to WebP, keeping transparency.
Basebaconservices.comfrom $0.018 endpoints - Ddep.halowerk.comOther services
Calculates release intervals and inactivity from current registry timestamps. 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.
Basedep.halowerk.comfrom $0.0039 endpoints
DEBYKOCrypto & DeFiCrypto perpetual futures screener that finds markets across 19 venues (Aster Perpetuals, Avantis, Binance USD-M Futures, Bitget Perpetual Futures, Bybit Perpetuals, Coinbase Global Derivatives and 13 more) by funding rate, open interest, price, basis, volume or data age with a DQL query, e.g. any(venues where funding > 0). Returns the matching instruments with each venue's value, its timestamp and
Baseapi.debyko.comfrom $0.0054 endpoints- CCompliAPICrypto & DeFi
Screen a website URL or domain against OFAC SDN and other global sanctions lists. Call before paying, advertising on, or integrating with a website to check for sanctions associations. Returns per-list matches with source URLs.
Baseapi.compliapi.comfrom $0.016 endpoints - Ttrust402.vercel.appOther services
Run a fast live probe for one x402 endpoint and summarize challenge/payment-flow readiness.
Basetrust402.vercel.appfrom $0.0052 endpoints - PPayPerByteData & research
NWS weather forecasts for 5 US cities (NYC, LA, Chicago, Houston, Miami)
Basex402.payperbyte.iofrom $0.0032 endpoints - LLION Verified CompanySocial & people
Is this crypto wallet sanctioned? Instant OFAC SDN address screen for AI agents. Returns PASS/WARN/BLOCK. $0.001 Base USDC, keyless x402. Ed25519-attested. Upsell: full counterparty bundle $0.05.
Baselion-x402-bible.lionmaster-operations.workers.devfrom $0.0014 endpoints
defi.genexxis.comCrypto & DeFiDeFi TVL from DefiLlama: top protocols filtered by category and chain (TVL, 1d/7d change, market cap, chains), chain TVL rankings with protocol counts, or one protocol with per-chain TVL split and 90 days of daily TVL history.
Basedefi.genexxis.comfrom $0.0034 endpoints- DDokimo Verify APICrypto & DeFi
Dokimo Verify API (GET) - scheme demo: recomputes a sample dokimo-merkle-v1 proof to its root and verifies nothing of yours. For real caller verification, POST /paid/verify with {leaf, proof_path, root, rule_version_commitment} plus summary and binding for a dokimo-anchor-v2 close (recompute + on-chain anchor check). Scheme: /merkle-spec.html.
Basedokimo.augaster.comfrom $0.011 endpoint - WwickedapiData & research
Demo weather - current conditions for New York City
Basepaywall.wickedapi.comfrom $0.011 endpoint - Xx402 PreflightCrypto & DeFi
Check an x402 seller before you pay it. Probes the endpoint now, checks that its payment can actually succeed (token EIP-712 domain, payTo), and adds its 30-day uptime from our monitor of paid Bazaar listings, how many distinct buyers paid it, and how its price compares with similar listings, with cheaper well-used alternatives. Returns a verdict (ok, caution, avoid) with the reasons.
Basepreflight.kagurazaka.devfrom $0.0021 endpoint - Sstat.halowerk.comData & research
Reports the credit-to-GDP gap for a country, which is the deviation of the credit ratio from its long-run trend and the quantity the Basel framework uses to trigger the countercyclical capital buffer. The thresholds applied are the regulatory ones — the buffer starts to build at a gap of two percentage points and is at maximum by ten — and they are returned with the result, because a phase judgeme
Basestat.halowerk.comfrom $0.00159 endpoints - CContextSlimAI & agents
[MCP: fetch_result] Targeted JSONPath extraction (query param mode) from cached context reference.
Basecontextslim.friczero.comfrom $0.0012 endpoints - Aanomaly.forgemesh.ioCrypto & DeFi
Returns a real-time mempool anomaly score with current gas price vs 20-block median, pending whale swaps, and contract deploy counts. Poll every 5s to monitor mempool for MEV or sandwich attacks and catch gas spikes or large pending swaps as they happen, before they land on-chain.
Baseanomaly.forgemesh.iofrom $0.014 endpoints - AAIS FleetData & research
Get the vessels currently in a UN/LOCODE port as JSON: MMSI, name and arrival time of every vessel the AIS Fleet network observes there now, with a total count.
Baseaisfleet.comfrom $0.0113 endpoints
x402 DoctorAI & agentsShould my agent pay this expensive x402 endpoint? Call it before a costly or repeated payment. Returns the go / caution / no_go verdict plus the full diagnosis, the endpoint's check history per day over 30 days, how reliable the seller's other endpoints are and whether the endpoint moved domains. Never pays the endpoint. Bulk: 1000 credits for $0.80 via /api/v1/credits.
SolanaBasexrpl+4x402-doctor.fizzl.eufrom $0.0016 endpoints- CCrypto Perp Funding & SentimentCrypto & DeFi
Supported perpetual-futures trading pairs — the list of symbols (BTCUSDT, ETHUSDT, …) the funding-rate scanner and signals cover, as a clean snake_case envelope.
BasePolygonArbitrum+1perpsignals.use.x402atlas.comfrom $0.0053 endpoints - Xx402stock.vercel.appMarkets & finance
Full-text search across every SEC EDGAR filing since 2001. Find filings mentioning a keyword or exact phrase via ?q=, narrow by ?forms=10-K,8-K, ?ticker=, and ?startdt=/?enddt= dates, and cap with ?limit=. Returns each match's form, filer, date, and a link to the document. Sourced from SEC EDGAR. From x402stock, a market & economic data API (x402, USDC).
Basex402stock.vercel.appfrom $0.015 endpoints - Ccryptodataapi.comCrypto & DeFi
Dated crypto catalysts (unlocks, mints, listings, macro) with a long/short bias and 0-1 magnitude each.
Basecryptodataapi.comfrom $0.0087 endpoints - Ssec-filings.mick8511.workers.devSocial & people
SEC company lookup: resolve a stock ticker, CIK number or company name to the SEC registrant profile with CIK, legal name, tickers, exchanges, SIC industry code and description, state of incorporation, business address, fiscal year end, filer category and former names, from SEC EDGAR. Free sample: https://sec-filings.mick8511.workers.dev/sample
Basesec-filings.mick8511.workers.devfrom $0.0025 endpoints - AApiToll Base Gas OracleAI & agents
Base gas oracle / gas price API for AI agents and bots — get the gas price for a transaction on Base in one x402 call. Real-time slow/standard/fast EIP-1559 fee tiers from a live eth_feeHistory call, returned as DROP-IN maxFeePerGas + maxPriorityFeePerGas in wei — plug straight into a viem/ethers transaction, no gwei conversion. Plus base fee, head block, and network fullness. Call it before every
Basegas.apitoll.cloudfrom $0.0011 endpoint - UUK Company LookupSocial & people
UK company profile from the Companies House public register, returned as JSON.
Basepennydatahq.comfrom $0.0019 endpoints
ProblocksOther servicesVerify payment connectivity with USDC on Base. Returns a JSON pong and UTC timestamp after settlement.
Basex402.problocks.iofrom $0.0011 endpoint- DDataForAgentsSearch & web
DataForAgents — Steam catalog search for agents (name, genre, price filters)
Basedataforagents.netfrom $0.013 endpoints - 889-116-220-218.sslip.ioCrypto & DeFi
Base mainnet head: latest block number, block age in seconds, base fee and gas price in gwei. Use it to check the chain is advancing and to estimate fees before sending a transaction. One small JSON read instead of several raw RPC calls and unit conversions.
Base89-116-220-218.sslip.iofrom $0.0016 endpoints
Geo402Search & webGeo web fetch for AI agents. Fetch any public web page from a residential IP in a chosen country (190+ countries, optional city or US state) as clean markdown, text or HTML, with the product price/currency/availability extracted automatically when the page has product data. $0.005 per page, only charged when the page loads. Respects robots.txt; no CAPTCHA solving; sign-in, payment and email servic
Basegeo402.comfrom $0.0043 endpoints
prices.genexxis.comOther servicesMedian spot price of up to 50 coins across Binance, Coinbase, Kraken, OKX and Bybit in usd/usdt/eur/btc, with per-venue prices, 24h change %, summed 24h USD volume and cross-venue spread %. ids accepts CoinGecko ids or tickers.
Baseprices.genexxis.comfrom $0.0033 endpoints
odds.genexxis.comOther servicesMost traded open prediction markets right now across Polymarket and Kalshi, ranked by 24h volume, with implied probabilities and links.
Baseodds.genexxis.comfrom $0.0053 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.