x402 paid APIs: MCP servers, A2A agents and x402 APIs

• mime.openverbs.com Live x402

  Resolve a filename, path or extension to its MIME type, charset and full Content-Type. (2 paid endpoints on mime.openverbs.com.)

  x402 paid API · 2 endpoints

• mimirapi.com Live x402

  Paid liveness probe for the MimirAPI counter. Returns pong, the SKU id, and a server timestamp. One tenth of a cent buys a complete challenge, sign, settle, serve round trip — the cheapest possible proof that your x402…

  x402 paid API · 11 endpoints

• minerals.lonestaroracle.xyz Live x402

  Critical-minerals supply-concentration & US import-reliance signal

  x402 paid API · 1 endpoint

• mini-tollbooth.onrender.com Live x402

  Agent-ready crypto price feed — spot prices for majors plus Base/Solana staples, now with a plain-English momentum verdict. No API key needed. Toll: $0.005 USDC on Base or Solana. (58 paid endpoints on mini-tollbooth.on…

  x402 paid API · 12 endpoints

• minia2a.uk Live x402

  Safe math expressions. 🆓 5 free trial calls per signed wallet (98 paid endpoints on minia2a.uk.)

  x402 paid API · 12 endpoints

• miningincidents.org Live x402

  MSHA mining fatalities feed, newest first, including OPEN preliminary notices (scraped 32–180 days ahead of the official dataset and flagged as preliminary). Filter by date, state, commodity. (2 paid endpoints on mining…

  x402 paid API · 2 endpoints

• miorail.xyz Live x402

  Miorail x402 paid resource (5 paid endpoints on miorail.xyz.)

  x402 paid API · 5 endpoints

• mizan-bazar.higgsfield.app Live x402

  Mizan report card for any of 3,035 x402 operators (47,302 endpoints on file) — this call: api.loyalspark.online. Liveness across surveys, latency, x402 conformance, price demanded at the door vs price advertised in the…

  x402 paid API · 1 endpoint

• modelprices.xyz Live x402

  Claude pricing table: what every Claude model costs per token right now — Claude 5, Claude Opus, Claude Sonnet, Claude Haiku — from Anthropic and every provider that resells or hosts them (Bedrock, Azure, Vertex, OpenRo…

  x402 paid API · 12 endpoints

• moltbillboard.com Live x402

  Browse live MoltBillboard placements — machine-readable offer surfaces, trust signals, and attribution primitives for agentic commerce.

  x402 paid API · 1 endpoint

• money-agent-production-736f.up.railway.app Live x402

  Call when you need the text of one public http(s) page. Required query url. SSRF-gated. Not a search engine and not a GitHub clone.

  x402 paid API · 1 endpoint

• money-mind-extract.onrender.com Live x402

  Fetch a web page three independent ways (rendered, static, second-render cross-check), confidence-scored, with a tamper-evident attestation. Refuses protected, login and CAPTCHA pages without charging. Use when your age…

  x402 paid API · 5 endpoints

• money.openverbs.com Live x402

  Round an amount to a currency's minor units (or an explicit minorUnits) with a chosen rounding mode: half-even (banker's, default), half-up, half-down, ceil, floor or trunc. Give a currency to derive minor units automat…

  x402 paid API · 4 endpoints

• monitor.memoryapi.org Live x402

  x402 API activity stats — top endpoints by paid calls, trend data, and unique payer counts from memoryapi.org nginx logs. (2 paid endpoints on monitor.memoryapi.org.)

  x402 paid API · 2 endpoints

• monpham.work Live x402

  Search products across China B2B wholesale marketplaces (Yiwugo, Made-in-China, DHgate) via a stealth browser farm. Returns structured products: title, price, MOQ, supplier, images (optional CDN URLs). POST with {keywor…

  x402 paid API · 3 endpoints

• mortgage-amortization.underscoredone.com Live x402

  Give this API a loan amount, an interest rate, and a repayment term, and it returns the exact monthly payment plus a full month-by-month schedule: interest paid, principal repaid, and balance remaining for every payment…

  x402 paid API · 1 endpoint

• mpp.tracefast.xyz Live x402

  TraceFast knowledge graph: what an Ethereum address is, as proven facts — wallet or contract, proxy and upgradeable or not, a token and its standard, and for a token contract whether it can pause, mint or blacklist and…

  x402 paid API · 12 endpoints

• mru-oracle.com Live x402

  MUR exchange rates (Bank of Mauritius): Bank of Mauritius consolidated indicative rupee exchange rates for GBP, USD, EUR and JPY (per 100), with buy/sell/mid and ~26 business days of USD/EUR/GBP history.

  x402 paid API · 1 endpoint

• mtbandy--sec-ratio-engine-serve-app.modal.run Live x402

  Calculates 9 TTM financial ratios (P/E, P/OCF, P/FCF, P/B, EV/EBITDA, ROIC %, Debt/Equity, Current Ratio, Interest Coverage) directly from official SEC EDGAR XBRL filings with accession audit trails. Disclosures: Financ…

  x402 paid API · 1 endpoint

• music.jamesbpollack.com Live x402

  Search the James B. Pollack music catalog by mood, BPM, key, year, or similarity

  x402 paid API · 1 endpoint

• mysticapi.com Live x402

  Live universal sky snapshot, no inputs: geocentric ecliptic longitudes for 13 bodies (Sun through Pluto, Chiron, lunar nodes) with zodiac sign/degree and 64-gate wheel placements, current moon phase and illumination, ac…

  x402 paid API · 1 endpoint

• n0brains.com Live x402

  Real-time crypto trading signals for BTC, ETH, SOL and 400+ coins — classified by type (whale flows, funding, liquidations, listings, news, on-chain), scored, with direction, confidence and conviction. Emitted signals'…

  x402 paid API · 3 endpoints

• nanoparse.app Live x402

  Fetch a web page and return clean Markdown with Litmus intelligence. Requires payment of $0.005 USDC per page.

  x402 paid API · 1 endpoint

• nativebtc.org Live x402

  Pay once to receive a short-lived WebSocket ticket for the live Bitcoin mempool stream.

  x402 paid API · 1 endpoint

• nato.openverbs.com Live x402

  Spell text using the NATO/ICAO phonetic alphabet (A→Alfa, B→Bravo, …), including digits and spaces (→Space). Characters with no phonetic spelling are clean 400s. (4 paid endpoints on nato.openverbs.com.)

  x402 paid API · 4 endpoints

• natur.halowerk.com Live x402

  Returns the latest instantaneous values at a USGS streamgage, together with what makes them readable. A stage of three point four feet means nothing on its own, so each value is placed against the station own record for…

  x402 paid API · 6 endpoints

• netz.halowerk.com Live x402

  Resolves a prefix to its announcing autonomous systems and puts that answer in context. The current state gives every origin AS seen for the prefix, the number of more specific and less specific prefixes routed alongsid…

  x402 paid API · 2 endpoints

• neurodynamic.tech Live x402

  Introductory pricing. Catalogue narration: 0.005 USDC on Base, up to 1,000 characters, MP3. Seven English voices. No account, reference upload or human approval. Read https://api.neurodynamic.tech/narration. Authorisati…

  x402 paid API · 1 endpoint

• newsgurus.ai Live x402

  News Gurus Intel API — liveness probe: per-agent intelligence output counts over the last 24h with last-seen timestamps, across the 40+ data agents. Verify the engine is live before buying data — same price tier as /x40…

  x402 paid API · 12 endpoints

• news.lonestaroracle.xyz Live x402

  AI-powered news sentiment analysis for any ticker company or market topic

  x402 paid API · 1 endpoint

• news.netzhandwerker.de Live x402

  Groups managed news feeds into events when an agent needs a compact news briefing. Supply topic, language, time window and result limit using the published schema. Returns headlines, a short abstract, first-report time,…

  x402 paid API · 1 endpoint

• nl-cm-kg.ai Live x402

  One paid call on nl-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…

  x402 paid API · 1 endpoint

• node4all.com Live x402

  Node4All Fortune — deterministic fortune reading derived from the x402 payment authorization nonce. Flagship demo of the Node4All x402 v2 payment flow. Operator: Node4All (https://node4all.com). Currency: USDC on Base.…

  x402 paid API · 2 endpoints

• numeral.openverbs.com Live x402

  Spell an integer out in English words, e.g. 123 → "one hundred twenty-three". Negatives are prefixed with "minus". (4 paid endpoints on numeral.openverbs.com.)

  x402 paid API · 4 endpoints

• oassis.dev Live x402

  Web extraction: every output you ask for in `formats`, in one call. (5 paid endpoints on api.oassis.dev.)

  x402 paid API · 5 endpoints

• obagents.vercel.app Live x402

  x402 OB Image Generator · Price $0.01 per generated image https://obagents.vercel.app/api/obigen/protected/igen GET Query Params // The primary text description of the image to generate. prompt: string; Example: https:/…

  x402 paid API · 1 endpoint

• obeliskapp.io Live x402

  Search Obelisk's curated spy ad catalog when you need competitor creative examples by keyword, brand, or platform. Returns JSON ad cards. Use limit=1 for a cheap first call.

  x402 paid API · 1 endpoint

• obol.danieldutoit.net Live x402

  Base network block status reconciled after payment across two pre-probed distinct-operator RPC endpoints

  x402 paid API · 1 endpoint

• observer.137-184-67-179.sslip.io Live x402

  Live Bitcoin BTC-USD market-regime and risk evidence for autonomous AI agents, algorithmic systems, portfolio monitors, and quantitative workflows. Returns current market state and phase, coherence, commitment, pressure…

  x402 paid API · 1 endpoint

• oceanalt.com Live x402

  Deep taint trace: follow funds upstream over multiple hops to see whether they touched illicit sources. (4 paid endpoints on oceanalt.com.)

  x402 paid API · 4 endpoints

• offercheck.offercheck.workers.dev Live x402

  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, d…

  x402 paid API · 5 endpoints

• og.bip-rep.com Live x402

  Generate ready-to-use 1200x630 Open Graph / social preview images from text for content, marketing, and publishing agents. Provide a title plus optional subtitle and category badge, pick a built-in theme (dark, light, m…

  x402 paid API · 1 endpoint

• oi.lonestaroracle.xyz Live x402

  Full OI report — all assets, all exchanges, 5-min delta

  x402 paid API · 1 endpoint

• omardev.xyz Live x402

  Extract structured metadata from any URL: page title, meta description, Open Graph and Twitter Card tags, canonical URL, favicons, language, generator and robots directives, plus RSS/Atom feed links. Give it a URL, get…

  x402 paid API · 2 endpoints

• onvexia.com Live x402

  Topic ranking. Ranked social topics for a window. Returns topics + window_hours. (3 paid endpoints on onvexia.com.)

  x402 paid API · 3 endpoints

• openai.mm.family Live x402

  gpt-6.1-sol (OpenAI's newest model) and 25 more OpenAI chat models (gpt-6, gpt-5.x, gpt-4.1, gpt-4o, o-series), paid per call in USDC. OpenAI token rates on Flex (half price, may answer 429; default where offered), Stan…

  x402 paid API · 12 endpoints

• openwebninja-x402.vercel.app Live x402

  Fetch current Amazon deals. (5 paid endpoints on openwebninja-x402.vercel.app.)

  x402 paid API · 5 endpoints

• openworker.etips.me Live x402

  Returns a single, verifiable snapshot of any EVM wallet: native balance, ERC-20 token balances, current block number, and recent activity count across the most popular chains (Ethereum, Base, Arbitrum, Polygon). Built f…

  x402 paid API · 2 endpoints

Related capabilities

On-chain dataTrading & marketsAI models & inferenceAgent infrastructureMaps & travelResearchSecurity & trustSocial media

How to use one

MCP servers plug into Claude, ChatGPT, Cursor and other AI clients; A2A agents take tasks over JSON-RPC; x402 APIs charge per call in USDC with no account. Guides: A2A vs MCP · How to call an A2A agent · x402 for agents.

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