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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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915 results
x402 Weather APICrypto & DeFiLive current weather conditions for any city, sourced from Open-Meteo
BasePolygonArbitrum+1x402tap.comfrom $0.00116 endpoints- MMekler AIMarkets & finance
Check one email address or domain. Report common address syntax, MX or null MX and A/AAAA fallback, SPF, exact-domain DMARC and optional caller-supplied DKIM selector records, and a small known disposable-domain list. DNS failures remain unknown. Does not verify a mailbox or predict delivery.
SolanaBaseapi.mekler.aifrom $0.002840 endpoints
AgentUtility.aiImages, audio & videoSearch Hacker News for startup news, YC news, Show HN launches, and founder discussion through the Algolia HN index. Send a query, then filter stories, comments, or polls by author, minimum points, and ISO-8601 date range; sort by relevance or newest first. Returns titles, authors, points, comment counts, timestamps, URLs, and matching text. Use it as a startup news search API, YC news search, Sho
BaseSolanax402.agentutility.aifrom $0.00137 endpoints- Aagenttoll.devSearch & web
Search USPTO trademark database. Returns mark, owner, filing date, status, registration number, goods/services classes.
BaseSolanaagenttoll.devfrom $0.026 endpoints
Horizon PulseImages, audio & videoCrypto market data: a current USD price snapshot for BTC, ETH and SOL, or one coin via symbol= (bad symbol: 400), for quick market context. JSON per asset: priceUsd, change24hPct, momentum; plus overall momentum, sentiment, direction, avgChange24hPct, asOf. Prices from Coinbase Exchange, CoinGecko fallback (source field). Labels are fixed rules on 24h change, not a forecast and not financial advic
BaseSolanaxrpl+1horizonpulse.devfrom $0.00236 endpoints- Ddefi.hugen.tokyoCrypto & DeFi
List all blockchain networks supported by this API's security scanning — Ethereum, BSC, Polygon, Arbitrum, Base, Optimism, Avalanche, Fantom, Solana, and 20+ chains with chain IDs and names. Accepts USDC payments on Base and Solana
BaseSolanadefi.hugen.tokyofrom $0.0111 endpoints
Otto AICrypto & DeFiImportance-ranked crypto headlines with per-article source links and publish times, plus a sentiment-scored market brief. Regenerated hourly; meta carries the snapshot's age and a fresh/stale verdict.
BaseSolanaEVM chain 5042+2api.aidress.aifrom $0.00114 endpoints- Aapi.printmoneylab.comCrypto & DeFi
Korean exchange prices (Upbit, Bithumb) for a single token in KRW
BasePolygonSolanaapi.printmoneylab.comfrom $0.0019 endpoints - OOnchainPulseCrypto & DeFi
Honeypot check, half a cent: can this token actually be sold? Simulated buy+sell verdict, buy/sell/transfer tax, mint authority, ownership renounced, transfer-pausable, blacklist — the raw flags, one source, no fusion. Base, Ethereum, BSC, Arbitrum, Polygon, Optimism, Avalanche. Cheapest token safety check before you trade; upgrade to /api/evmtoken ($0.015) for the fused CLEAR/CAUTION/AVOID verdic
BaseSolanaRobinhood Chain+9onchainpulse.theaslangroupllc.comfrom $0.00528 endpoints
CoinGeckoCrypto & DeFiSearch onchain DEX pools and token, by contract address, name, or token symbol.
BaseSolanaPolygonpro-api.coingecko.comfrom $0.00532 endpoints- Hhcrb.inOther services
Validate IBAN structure and MOD-97 checksum. Does not establish account ownership, beneficiary identity or absence of fraud.
BasePolygonAvalanche+2hcrb.infrom $0.00546 endpoints
PalmyrSocial & peoplePalmyr: POST /social/twitter/unfollow
SolanaBasepalmyr.aifrom $0.00124 endpoints
ApifySocial & peopleApify is the largest and most trusted marketplace of tools for web scraping, crawling, data extraction, and automation. Use these tools, called Actors, to extract structured data from social media, e-commerce sites, search engines, maps, travel sites, or any other website. Turn the open web into a real-time data source for your research, lead generation, and monitoring.
BaseSolanaagi.apify.comfrom $1.001 endpoint
AMNTImages, audio & videoBitcoin price - Get the current Bitcoin spot price in any fiat currency using CoinGecko’s free public API; returns the raw JSON price object.
BaseSolanahederaamnt.iofrom $0.0017 endpoints- Xx402.swaphunt.devCrypto & DeFi
Current Crypto Fear & Greed Index (0-100) with its label (Extreme Fear → Extreme Greed), updated daily. A single market-mood gauge for risk-on/risk-off context. For trend over time use /fear-greed/compare or /fear-greed/history.
BasePolygonArbitrum+1x402.swaphunt.devfrom $0.00118 endpoints
CyreCrypto & DeFiCyre Gate — before your agent pays ANY other x402 service, grade the payTo counterparty + spend shape in one cheap call. Patterns, not verdicts. Agent guide: use before non-Cyre awal x402 pay. Agent guide: https://cyre.dev/SKILL.md
SolanaBasecyre.devfrom $0.00125 endpoints
SingIt Text to SpeechImages, audio & videoOpenAI Responses API for LLM inference, any model listed at GET /v1/models (GPT, Claude, Gemini, DeepSeek and more). Call it when an agent needs an answer in OpenAI's Responses format with no API key or account. Served by SingIt.
BaseSolanaask.singitai.appfrom $0.001122 endpoints- GGitHub Status CheckAI & agents
Check GitHub's official status source for current incidents, component health, and scheduled maintenance before an agent retries, deploys, or escalates.
BaseSolanaagentbodega.storefrom $0.0058 endpoints - Xx402factory.aiSocial & people
Base X profile mini-endpoint. Fetches a full X profile and the 10 most recent tweets for a given handle, returning the raw profile data plus a trimmed tweet list with key engagement metrics and media. Cost: 0.001 USDC per request.
SolanaBasex402factory.aifrom $0.00132 endpoints - MMaxwell x402Crypto & DeFi
OFAC SDN screen by name, alias (aka/fka/nka), or UID against the Treasury SDN list joined with alt.csv and add.csv. A clean no-match is a valid screening result and is charged.
BaseSolanaapi.maxwellinternational.aifrom $0.00214 endpoints
ToolrailMarkets & financeCurrent VAT rates for supported European countries (EU-27 + UK, CH, NO...). Standard, reduced and super-reduced rates, provided through the third-party vatnode dataset; verify applicability for your transaction. Use when pricing, invoicing or checking tax for a customer in Europe and you need that country's VAT rate.
BaseSolanatoolrail.devfrom $0.00230 endpoints
TariffMonkeeSocial & peopleHealth and payment-path check. Returns server time and confirms the x402 payment settled. The cheapest endpoint in the catalog at $0.001, intended for testing a client's payment flow.
BaseSolanatariffmonkee.comfrom $0.00139 endpoints- Pproxy.suverse.ioMarkets & finance
Real-time forex exchange rates for 170+ currencies with USD base. Daily updates from ExchangeRate-API open data. AI agent international payment calculator, cross-border FX, finance dashboard, currency converter API, pay-per-call USDC.
BaseSolanacosmosproxy.suverse.iofrom $0.00121 endpoints
CarsonBot402 AskOther servicesx402 debugging/troubleshooting Q&A: Ask any question, get a cited answer. Whether you need HTTP 402 Payment Required help, facilitator verify & settle (CDP @coinbase/cdp-sdk), Bazaar discovery metadata & listing, protocol documentation, Next.js paid routes, or planning, building, and integrating x402 servers: @x402/core @x402/next @x402/express @x402/hono @x402/fastify @x402/fetch @x402/axios @x40
BaseSolanacarsonbot402.devfrom $0.011 endpoint- Dd21 crypto_newsSocial & people
Crypto News ($0.001 -- matches the category-leading incumbent's price exactly): fixed, no-required-params crypto headline feed -- a drop-in-shaped alternative to the category leader (GET, headlines[] with title/url/source/publishedAt; also mirrors its {status, data:{headlines[] with rank/whyItMatters/match, report}, meta} nesting field-for-field, as an additive alias). Built on this origin's own n
BaseSolanadraconic21-x402-api.onrender.comfrom $0.00142 endpoints - AApiToll SEC FilingsMarkets & finance
Latest SEC EDGAR filings for any US-listed company by stock ticker or CIK: 10-K annual reports, 10-Q quarterly reports, and 8-K material events. Resolves ticker to CIK via SEC's official index and returns the parsed filing (company, form type, dated items). Sourced live from data.sec.gov.
BaseSolanaedgar.apitoll.cloudfrom $0.0034 endpoints - Kkino402Images, audio & video
Seedance 1.5 pro: 12s at 720p
BaseSolanakino402.comfrom $0.00510 endpoints - CCoinGecko Crypto Price & DataCrypto & DeFi
Crypto token price in USD, EUR and more — real-time spot prices for one or many coins by CoinGecko id (bitcoin, ethereum, solana).
BasePolygonArbitrum+1coingecko.use.x402atlas.comfrom $0.0056 endpoints - Aapi.carbon-cashmere.deDeveloper tools
Curated Bitcoin coinbase scriptSig messages (printable ASCII only). Pool tags, BIP-comment campaigns, political statements. Window up to 7d.
BasePolygonArbitrum+4api.carbon-cashmere.defrom $0.0245 endpoints - Aapi.cryptoetfsentinel.comSocial & people
Crypto ETF Sentinel — Latest POS AM-extracted operational profile for one US spot crypto ETF issuer: custodian, sponsor fee, AP counts, in-kind eligibility, basket size. Use when you need one fund's current plumbing terms. Pass the issuer's SEC CIK as cik.
BaseSolanaapi.cryptoetfsentinel.comfrom $0.0322 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.