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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191 results- Aapi.newsgurus.aiCrypto & DeFi
News Gurus Intel API — US equity + crypto market regime now: TRENDING, MEAN_REVERTING or VOL_EXPANSION with confidence. Example: {regime: TRENDING, confidence: 0.74, reason: 'ADX 31 + VIX compression', vix_spot: 14.2, adx: 31}. Derived by a 40-source trading bot, refreshed intraday. Cheapest first call on this API and the standard 'trend day or chop day' check before sizing any trade. Educational
Baseapi.newsgurus.aifrom $0.00238 endpoints - MMimirAPIImages, audio & video
Phone number intelligence for agents: pass any number and get back whether it is a valid E.164 number, its country, the carrier that holds it, and the line type — mobile, landline, or VoIP. One paid call, no account, no API key. Decide whether a number is worth calling or texting, or flag a VoIP number before you trust it. Free-format numbers are normalized; a syntactically bad number is rejected
Basemimirapi.comfrom $0.00110 endpoints
ToolsmithImages, audio & videoKeyless web search for agents: pass a query, get a concise web-grounded answer plus the top source results (title, URL, snippet). Live web access, no API key or account needed. JSON response. $0.008 USDC per call, pay via x402, no API key.
Basetoolsmith-api.dassad10.workers.devfrom $0.0025 endpoints- Aapi.blockscout.comCrypto & DeFi
Access to api/v2/addresses/:address_hash/token-transfers. List token transfers involving a specific address with filtering options
BaseEVM chain 42220api.blockscout.comfrom $0.0027 endpoints - FForeverKaratDeveloper tools
One-day API key for a weather data API. A test product on the Agentify test channel; nothing real is delivered.
Base Sepoliatest.agentify.adfrom $0.0116 endpoints - RRooms by AurmadaSocial & people
Use it before you send to an address, or to screen sign-ups and leads for typos, disposable domains and role addresses. Checks syntax, MX records (with the A-record fallback), null MX, a list of about 120,000 disposable domains, role addresses (info@, support@…) and free providers, without sending anything. No SMTP probing, so it can't confirm the mailbox exists. Never charged for errors: we settl
Baserooms.aurmada.comfrom $0.00119 endpoints
CortexCloudCrypto & DeFiSpot USD price for a token/coin (CoinGecko where free tier suffices, else Alchemy). x402-paid.
Baseapi.cortexcloud.orgfrom $0.00415 endpoints- Xx402 Carbon Retirement APICrypto & DeFi
Entry point to the x402 Carbon Retirement API on Base. Returns every endpoint you need plus a live snapshot of the top 3 carbon classes and marketplace listings by liquidity. Discover, quote and certificate are free. Retiring is paid: each retirement costs the credit price plus a fee, sent from your own wallet (prepare/retire) or relayed from a signed USDC authorization (prepare-auth + POST action
Basex402.klimalabs.comfrom $0.0012 endpoints
Kakerapetit Japan Company DataImages, audio & videoEDINET filing calendar: annual securities reports (yukashoken hokokusho) filed by Japanese listed companies in a date range. Returns company code, EDINET document ID, fiscal period, accounting standard (JGAAP/IFRS/USGAAP) and the exact filing timestamp for each report — track new disclosures, trigger data pipelines, or find which Japanese stocks just reported. Query: /v2/calendar?from=2026-06-20&t
BasePolygonapi.kakerapetit.devfrom $0.00211 endpoints- HHyperNatt TerminalCrypto & DeFi
NattSwap cross-chain swap quote (Li.Fi)
BaseSolanahypernatt.comfrom $0.0012 endpoints - Aarchtools.devOther services
Parse RSS/Atom feeds into structured JSON. Pay per call with USDC (x402) or credits - archtools.dev
BasePolygonarchtools.devfrom $0.0118 endpoints - 7767-2676.comAI & agents
Signed time-bounded witness of an agent-carried payload digest; the payload stays with the agent
Base767-2676.comfrom $0.0013 endpoints - Xx402 Image ToolsImages, audio & video
Resize an image at a URL to a width, a height or both, keeping the aspect ratio inside the box by default (cover, contain, inside, outside or fill), optionally converting it. Returns a signed URL of the result, valid for an hour.
Baseimage.kagurazaka.devfrom $0.00110 endpoints - Xx402 Web ToolsImages, audio & video
Encode text or a URL as a QR code: PNG (base64 and a data URL) or SVG, with the size and error correction level you choose.
Baseweb.kagurazaka.devfrom $0.00110 endpoints
readfetch.comImages, audio & videoFetch a public URL and return its main readable content as Markdown or plain text, plus title, author, published date and site name. Strips navigation, ads and boilerplate. No JavaScript rendering by default (cheaper than readfetch_scrape); one Chromium fallback when plain HTTP is blocked. Prefer readfetch_fetch when you need raw status, headers, or non-HTML bytes; readfetch_scrape when the articl
Basereadfetch.comfrom $0.00312 endpoints- Xx402 AI ToolsImages, audio & video
Detects words and lines of text in a photo or screenshot (JPEG or PNG at a URL) with Amazon Rekognition, up to 100 words. Suited to signs, product labels and UI text; for documents use /v1/ocr.
Baseai.kagurazaka.devfrom $0.00212 endpoints
BytemineSocial & peopleRead any company page in real time and return clean structured content, links, metadata, and the detected tech stack. Data is fetched live from the source.
Baseagents.bytemine.aifrom $0.0150 endpoints- Ccurrency-api-production-4a8d.up.railway.appCrypto & DeFi
Current price, market cap, and 24h change for a single cryptocurrency by symbol or name (CoinGecko).
Basecurrency-api-production-4a8d.up.railway.appfrom $0.0013 endpoints
Tanod utilpeekImages, audio & videoutilpeek (Tanod) file upload: PDF, Office, image, audio, CSV, JSON or text stored for up to 24 hours and returned as a download link. Use when an agent holds a file and must give the next tool a URL for it: a link that expires within 24 hours.
SolanaBasePolygon+2tanod.devfrom $0.0005279 endpoints- Xx240.jvnclk88.workers.devCrypto & DeFi
URL preflight - status, redirect chain, key headers, response time, robots.txt rules for the path and sitemap location
BaseBase Sepoliax240.jvnclk88.workers.devfrom $0.00216 endpoints - OoffercheckImages, audio & video
Read any public web page as clean Markdown: main-content extraction (navigation, footers, scripts and hidden elements removed), headings, lists, tables, code blocks, links (absolute, deduplicated), images, plus title, description, canonical URL, language, author and publish date, and a content hash + fetch time as evidence. JSON and plain-text URLs are returned as-is. No JavaScript rendering. $0.0
Baseoffercheck.offercheck.workers.devfrom $0.0015 endpoints - Ccompute-api-production-245d.up.railway.appCrypto & DeFi
Estimate token count
Basecompute-api-production-245d.up.railway.appfrom $0.00110 endpoints - NNBU Data UkraineMarkets & finance
Official National Bank of Ukraine (NBU) exchange rates of the hryvnia (UAH) on a date: 40+ currencies, gold, silver and SDR, with English names. Call it when you need the legally official UAH rate for Ukrainian accounting, tax, invoices or customs, or to convert to/from UAH on a given date. Params: date (YYYY-MM-DD, default today in Kyiv), currency (ISO code, optional; omit for all).
Basenbu.navistri.comfrom $0.0015 endpoints - Gglim.shSocial & people
Search users by keyword
SolanaBaseEVM chain 143twitter.surf.cascade.fyifrom $0.0016 endpoints - Xxhagents.xyzImages, audio & video
One 0-100 safety score for a Base token before an agent buys: liquidity, top-10 holder concentration, owner powers in the bytecode, upgradeability (EIP-1967), explorer/Sourcify verification, creator history, small-trade price impact. Verdicts: safe/caution/danger per component, unknown when a check could not run, and not_a_token with no score when the address deploys no code.
Basexhagents.xyzfrom $0.0328 endpoints - BbasedueCrypto & DeFi
Public holiday and business-day calendar for US and UK: is a date a business day, add N business days, count business days between dates (net of holidays), and list a year's holidays. $0.01 per call in USDC on Base via x402.
Baseapi.firstmention.ukfrom $0.0127 endpoints
SorenCrypto & DeFiRead current gas price and base fee, live from Base mainnet, for a fraction of a cent. No API key, no account — a wallet is the only requirement, and you are charged only if the read succeeds. Plain unsigned data; the attested version of chain reads is /v1/oracle/onchain. Answers are read at the moment of the call and stamped with the block they came from where applicable.
Basesoren.comfrom $0.00216 endpoints- DDNS A Record LookupSocial & people
DNS A record lookup — resolve any hostname or domain to its IPv4 addresses, returned as a clean JSON list. For host resolution, connectivity and uptime checks, IP-reputation enrichment and infrastructure mapping.
BasePolygonArbitrum+1dns.use.x402atlas.comfrom $0.0057 endpoints - Jjoyful-charm-production-bf6d.up.railway.appMarkets & finance
Aggregate insider-trading market statistics: total Form 4 trades tracked, trades in the last 24h, top 20 most-traded tickers and top 20 most-active insiders by filing count and dollar volume. A one-call overview of where insider activity is concentrated right now. Returns JSON.
Basejoyful-charm-production-bf6d.up.railway.appfrom $0.0015 endpoints
x402 Agent HubSocial & peopleStatus of any transaction on 7 EVM chains: pending / success / reverted, confirmations, block time, from/to, value and the all-in fee (including the OP-stack L1 data fee on Base and Optimism). Use it to confirm a payment or deployment landed. You only pay for successful reads: invalid input, not-found and upstream errors cancel settlement.
Basex402-agent-hub.x402-agent-hub.workers.devfrom $0.00225 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.