Explore APIs
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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4,150 results
AgentStall ZADeveloper toolsSouth African phone number formatting and classification: converts an SA number in any common format to international +27 (E.164) and local formats, and says whether it is mobile, landline (with area for major cities), toll-free, VoIP or premium-rate. Useful for cleaning contact lists, SMS and WhatsApp messaging, and form validation.
Baseagentstall.nilesh-b54.workers.devfrom $0.00118 endpoints- MmakememoneynomistakesCrypto & DeFi
Open Commerce Pathways session: a budget from 0.50 to 35 USDC, a flat 0.01 USDC service fee, delegated planning and one report within 1 hour. Returns a session token. Your wallet pays every seller directly. Unused sessions expire; no refunds.
Basemakememoneynomistakes.aifrom $0.019 endpoints
WeatherDeveloper toolsWeather forecast for a location (global, keyless): current conditions, an hourly series (up to 48h) and a daily summary (up to 10 days: min/max temp + condition), from met.no. Pass lat+lon, or a place name. For travel, logistics, events, energy. No API key.
Baseweather.cyberwarex.comfrom $0.0012 endpoints- Aapi.dripmetrics.aiAI & agents
DripMetricsAI (api description at https://dripmetrics.ai/) provides on-demand market microstructure and risk metrics for agents and developers. Agents can pay per request via x402 and receive structured JSON metrics without subscriptions or API keys. VPIN measures volume-synchronized order-flow imbalance (an adverse-selection proxy, not a probability); see excessVpin. Discovery examples use the la
BaseRobinhood Chainapi.dripmetrics.aifrom $0.0511 endpoints - VVALUNARIA BUS-WEBData & research
VALUNARIA Evidence Fast
Basex402.valunaria.comfrom $0.015 endpoints - Ppolymarketeer.vercel.appOther services
Get detailed information for a specific Kalshi event by ticker symbol
Basepolymarketeer.vercel.appfrom $0.014 endpoints
ArtefaktumCrypto & DeFiList the projects of the paying wallet's account. Returns {items: [{id, name, slug, created_at}]}. Call this first: uploads, listings and search need a project_id. Costs $0.005 in USDC. No signup: a wallet's first payment creates its account and a default project; the same wallet later reaches the same files.
Baseapi.artefaktum.devfrom $0.00513 endpoints
SAVER Verifier Fact CheckingAI & agentsFact-checking and claim verification API for AI agents. Verify whether a cited source supports a claim; check statistics, dates, units and populations in research reports before publication. Separate web research returns a verdict, linked evidence and sources. Source verification is model-assessed, not guaranteed correct. POST /v2/verify; x402 v2 on Base; 0.20 USDC. No signup or API key.
Baseapi.saververify.comfrom $0.202 endpoints- QQonoro Email ValidatorSocial & people
Validates email deliverability: syntax check, MX record lookup, and SMTP server reachability. Returns risk score and quality rating. Deterministic, sub-second. x402-native.
Baseapi.qonoro.aifrom $0.00521 endpoints - Aagenticfinancegraph.comCrypto & DeFi
Statement history: The agent's last 24 three-hour statements (outflow split into spend and routing hops, what left its control, income, open flags), each with its keccak-256 hash, the prevHash link that chains them, and a Merkle proof against the signed root of its window. About one ERC-8004 agent on Base, by Agentic Finance Graph. id = token id, slug or bound wallet; an agent never seen paying is
Baseagenticfinancegraph.comfrom $0.0115 endpoints - GGW8 Signal APICrypto & DeFi
[Payment rails: fee + speed comparison] Cheapest and fastest payment rail right now for a USD amount (?amount=100): Base USDC (live gas x ETH/USD, ~2s), XRPL RLUSD/XRP (live fee x XRP/USD, ~3-5s), Tempo and Circle Arc (live gas, USD fees, ~1s), card (static 2.9% + $0.30, days). Fee USD/%, settlement time, sources, agent protocols per rail, recommended pick. Dead sources marked unavailable. 60s cac
Basemicro-saas-agent.onrender.comfrom $0.00220 endpoints - Aagenttoll.appCrypto & DeFi
New token scan with a safety verdict attached: today's new Base pools above your liquidity floor, each already checked for honeypot, taxes and owner powers. One call instead of N+1
Baseagenttoll.appfrom $0.00115 endpoints - KKeyword IdeasSearch & web
Up to 25 keyword suggestions containing the words of one seed phrase, with search volume, CPC and competition (DataForSEO Labs Keyword Suggestions).
Baseagent.chiemgaufilms.comfrom $0.0131 endpoints - Iioswarm.ioCrypto & DeFi
Live quotes for up to 8 symbols — stocks, ETFs, crypto pairs (BTC-USD), FX — price, session change and currency, in the paid response. $0.01 per call, no account.
Baseioswarm.iofrom $0.0116 endpoints
presign-guardCrypto & DeFiHoneypot and rug pull check for a token: is it safe to buy? Checks a Solana or EVM token before you buy, hold or accept it (mint or freeze authority still active, LP not locked, buy/sell tax, low liquidity, brand-new token, concentrated holders) and answers green/orange/red with a grade (SAFE/CAUTION/RISKY/AVOID), the reasons, a one-line summary and market data. Bulk: 100 checks for $0.80 via /v1/
BaseSolanaxrpl+4presign-guard.fizzl.eufrom $0.016 endpoints- FFilingDeltaMarkets & finance
SEC filing changes. Call when you need what changed in a company's latest 10-Q or 10-K (6-K for TSM and ASML, 8-K for JPM and BAC), not the headline. Each change has a materiality rating, EDGAR citation and why it matters. Tickers incl. AMD, NVDA, AAPL, MSFT, TSLA, JPM, SPCX; full list in /catalog. Free sample: /sample/AMD. Tickers not in /catalog 404 (no charge).
Basefilingdelta.xyzfrom $0.018 endpoints
Datakoot Economy IntelCrypto & DeFiDatakoot Regulatory Intel: Get full detail on a single Federal Register document by its document number (e.g. $0.01 USDC per call, charged only on success.
Basex402.datakoot.comfrom $0.00253 endpoints
AI Code ReviewCrypto & DeFiTop crypto headlines with per-article source links and publish times — aggregated from Cointelegraph, Decrypt and NewsBTC RSS
Basemoney-reactor.makar52nn2016.workers.devfrom $0.00187 endpoints- Aawg_metric_convertCrypto & DeFi
Uses the geometric AWG definition, so results are exact for solid round conductors. Mass per metre and resistance follow from the material density and resistivity at 20 degrees Celsius; stranded conductors carry roughly two to five percent more mass and resistance per metre than the same nominal size and are not modelled separately. Supply either awg or cross_section_mm2, not both. Sizes 4/0 throu
Basematerial.halowerk.comfrom $0.0014 endpoints - HHivemindOSAI & agents
Official HivemindOS paid agent (default)
Basehivemindos-paid-agent-gateway.hivemindos.workers.devfrom $0.0114 endpoints - RResolve402Social & people
Hiring signals of a company: open jobs read from its public ATS board (Greenhouse, Lever, Ashby, SmartRecruiters, Recruitee, Personio, Workable, Teamtailor, Workday), summarized as buying signals (volume, last 30 days, functions hiring, seniority mix, leadership roles); each job carries its function and seniority (intern to c-level). From a domain, a French SIREN or a company name. Chain with /api
BaseSolanaresolve402.devfrom $0.00312 endpoints - Aasistent-crypto.vercel.appCrypto & DeFi
Spot price, market cap, 24h volume and 24h change for any coins by id (bitcoin, ethereum, solana and thousands more), in any quote currency. The reference leg for every other signal here: funding and open interest only mean something next to what price did.
Baseasistent-crypto.vercel.appfrom $0.0419 endpoints - BBitwise ANDOther services
Bitwise AND across two or more non-negative integers (given as decimal strings, evaluated as arbitrary-precision BigInt). Returns the result in decimal, hex and binary.
Basebitwise.openverbs.comfrom $0.0027 endpoints - QQuantX402Crypto & DeFi
News: recent headlines for one symbol from our own news pipeline, each with a tone score, plus the average tone. Empty results are reported as empty (never charged), not as neutral. Experimental. Not financial advice.
BaseSolanaquantx402.appfrom $0.0113 endpoints - Aapi.healthparse.ioData & research
Discover pharma & device MANUFACTURERS from CMS Open Payments by name, total-spend band, or year of first appearance — the emerging/small-brand filter (low total_spend and/or recent first_seen_year) plus optional specialty/state activity. Answers: which small or new manufacturers pay physicians in my category and territory? Entity-resolved company dimension (DBA/subsidiary variants merged). Filter
Baseapi.healthparse.iofrom $0.00518 endpoints - Cchess402.vercel.appOther services
Today's Lichess daily puzzle: source game, themes, initial position, solution moves, and rating.
Basechess402.vercel.appfrom $0.0014 endpoints - LLatest Block NumberCrypto & DeFi
The current chain tip (latest block height) via eth_blockNumber, across Base, Ethereum, Optimism, Arbitrum, Polygon, Gnosis. The freshness read settlement, indexing and trading agents poll to know where the chain is. Live public RPC; one paid call. List your own x402 service on bazaar.agentexchange.work/listings: 1 USD, 30 days, live at once, no account.
BaseSolanastore.agentexchange.workfrom $0.0017 endpoints
how.isSocial & peoplePartner tier of the dns.pizza bot observatory: every network (ASN), named crawler, TLS (JA4) fingerprint and firewall rule seen in the last 7 days, refreshed hourly. The public tier is free at https://dns.pizza/bots.
Basehow.isfrom $0.00523 endpoints- Iimagegen.coinopai.comImages, audio & video
Prompt Styles — a curated FLUX prompt-engineering cheat sheet: 12 proven style recipes, an aspect-ratio guide, and a tier picker for the paid /generate endpoints. Static JSON, answers in milliseconds. Spend $0.005 here before spending $0.25-$0.75 on a generation.
Baseimagegen.coinopai.comfrom $0.0056 endpoints - Xx402-markettwits-news.onrender.comMarkets & finance
Latest official Bank of Russia rate (RUB per 1 unit, as /ru/fx) for one currency vs min and/or max: triggered, rate, breach below_min|above_max|null, distance and the CBR date. Unknown code -> 404, cbr.ru failure -> 502 (neither is settled).
Basex402-markettwits-news.onrender.comfrom $0.00131 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.