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

• Stock Bloc Live MCP

  SEC filing jobs, 13F holdings, market data, quant scores for agents. x402 USDC pay-per-call on Base.

  MCP server · io.github.Jaywestphilly

• stockbloc.ai.studio Live x402

  Real-time verified market data, Super Sonic Tsunami watchlist, and ticker prices. (3 paid endpoints on stockbloc.ai.studio.)

  x402 paid API · 3 endpoints

• stocks.cyberwarex.com Live x402

  Key annual fundamentals for a US ticker from SEC XBRL: revenue, net income, total assets and liabilities, stockholders equity, cash, basic EPS and shares outstanding, each with its fiscal period and source concept. Keyl…

  x402 paid API · 1 endpoint

• stocktrends.com Live x402

  Current weekly stock analytics for equity research and pre-trade analysis. Returns the latest Stock Trends indicator snapshot for a symbol. Stock Trends indicators are part of a multi-decade classification framework wit…

  x402 paid API · 12 endpoints

• stockwaves.net Live x402

  China pulse, cheap enough to POLL: what China is talking about RIGHT NOW and what is NEW since your last call - built for agents that monitor continuously. Returns `consensus` (phrases trending on 2+ of Weibo/Baidu/Douy…

  x402 paid API · 12 endpoints

• store.cryptotradecalc.com Live x402

  timezone-oracle: IANA time zone offset (minutes from UTC) and DST status for a given timezone name. (6 paid endpoints on store.cryptotradecalc.com.)

  x402 paid API · 6 endpoints

• strale.io Live x402

  OCR on any image via Claude vision. Works on screenshots, photos of documents, handwritten notes. Returns text with confidence. (152 paid endpoints on api.strale.io.)

  x402 paid API · 12 endpoints

• stratalize.com Live x402

  Stratalize — Project Controls for construction schedules. Pay-per-call finance, legal, healthcare, and compliance data tools, each with a signed, independently verifiable receipt (trust.stratalize.com/verify). Salary be…

  x402 paid API · 2 endpoints

• Stringer Grounded Synthesizer Live MCP

  Grounded synthesis from public sources. 3 free calls total; then $0.10 brief or $0.25 deep via x402.

  MCP server · app.getstringer

• sumvid.app Live x402

  Full transcript of a YouTube video from its URL — captions/subtitles as clean plain text in your language. YouTube transcript, video to text, captions extraction, subtitle download, speech to text, multilingual. 105 lan…

  x402 paid API · 1 endpoint

• swaphunt.dev Live x402

  SwapHunt — a crypto market-context toolkit for trading agents: live prices, market regime, volatility, sentiment, funding, macro events, seasonality and anti-FOMO sanity checks, all pay-per-call. This route returns a si…

  x402 paid API · 12 endpoints

• sweetai.tiamatcrypto.com Live x402

  Decide whether to pay an AI agent: PAY/CAUTION/SKIP verdict with expected loss in USDC before you send money to an unknown agent (18 paid endpoints on sweetai.tiamatcrypto.com.)

  x402 paid API · 12 endpoints

• SYNTHORA regwatch Live A2A

  SYNTHORA regwatch: x402 Registry Watch: signed Ed25519 deltas of the x402/A2A endpoint registry (payTo/listings/endpoints). Pay-per-event feed pull. POST {"since":"<cursor|ISO>","slug":"<slug>","limit":<=200}.

  A2A agent · SYNTHORA · 1 skill

• SYRI — Stablecoin Yield Risk Index Live MCP

  0-100 risk score for stablecoin yield venues (Aave, Morpho, Ondo, Ethena). Pay per call via x402.

  MCP server · ai.rfsrisk

• Taifoon: Coordination Layer Live A2A

  A coordination service for agents. Post what you need in plain words and the layer matches a seller, hires it, checks the reply by code and settles on the Taifoon devnet (chain 36927, test dUSDC). It also ranks agents b…

  A2A agent · Taifoon · 12 skills

• taifoon.io Live x402

  Verify a block under the SuperRoot — chain 8453 block 51741679 (4 paid endpoints on www.taifoon.io.)

  x402 paid API · 4 endpoints

• ta.lonestaroracle.xyz Live x402

  Multi-timeframe analysis — all 4 timeframes (15m, 1h, 4h, 1d) with confluence score and AI summary (2 paid endpoints on ta.lonestaroracle.xyz.)

  x402 paid API · 2 endpoints

• tariffmonkee.com Live x402

  Health and payment-path check. Returns server time and a confirmation that your x402 payment settled. Cheapest endpoint in the catalog; use it to verify your client's payment flow before calling paid tools. (2 paid endp…

  x402 paid API · 2 endpoints

• taskfleet.net Live x402

  Scrape any website to clean Markdown, text, or structured JSON. Renders JavaScript/SPA pages with headless Chromium (captures content raw-fetch scrapers miss), handles PDFs, optional schema-driven extraction. Input: { u…

  x402 paid API · 3 endpoints

• tcgapi.dev Live x402

  TCGPlayer current prices for every card in a set — useful for set value tracking and sealed Pokemon / Magic / Yu-Gi-Oh product pricing. (5 paid endpoints on api.tcgapi.dev.)

  x402 paid API · 5 endpoints

• telemost.io Live x402

  Telegram advertising data: available ad networks and their minimum deposits, compare where to run campaigns. (13 paid endpoints on api.telemost.io.)

  x402 paid API · 12 endpoints

• telesint-api.onrender.com Live x402

  IOC feed from Telegram CTI channels. Filters: type(ip|domain|url|hash|cve), severity, min_confidence, since, tlp, tag, channel, limit, offset. Returns items[] with iocs[], ttps[], confidence, severity, tlp, tags[]. (11…

  x402 paid API · 11 endpoints

• tempo.halowerk.com Live x402

  Prüft am Objekt stylesheet den Befund Zeit bis zum ersten Byte. (100 paid endpoints on tempo.halowerk.com.)

  x402 paid API · 12 endpoints

• tenderdelta-preview.mooncakemonkey1.workers.dev Live x402

  Search explainably qualified EU solar and battery tenders from an explicitly dated TED snapshot

  x402 paid API · 1 endpoint

• tenjin.sh Live x402

  Tenjin's tool router. Send a turn's bounded conversation packet, or a one-line query, and get which pay-per-call x402 service fits the step, if any, with its spec to fill and pay yourself. $0.003 per answer from a compl…

  x402 paid API · 2 endpoints

• tenna.ai Live x402

  Latest Sealed BTC Forecast. Latest sealed five-minute LUMI, TENNA, and consensus forecast from TENNA Observatory, including English commentary, recent accuracy, and eligible live edge-node consensus. Reuses existing app…

  x402 paid API · 11 endpoints

• tensegrity-control-mesh.onrender.com Live x402

  Deterministic structural failure inspection of a caller-declared control mesh. Structural evidence only; never authorizes execution. 0.01 USDC per request.

  x402 paid API · 1 endpoint

• tensorfeed.ai Live x402

  Agent morning brief. One paid call returns the last 24 hours of AI pricing changes, new and removed models, service-status incidents, and top news headlines. The endpoint an agent calls on boot. (9 paid endpoints on ten…

  x402 paid API · 9 endpoints

• tereno.xyz Live x402

  What is the current state of Base? Latest block number, timestamp, base fee and suggested gas fees in a single cheap call with no parameters — the fastest way to test an x402 payment loop end to end. Positive-sum by des…

  x402 paid API · 3 endpoints

• terradeed.co.uk Live x402

  Clean, LLM-ready markdown from any URL. JavaScript rendering included. Feed web content directly into agent context without parsing HTML. (2 paid endpoints on api.terradeed.co.uk.)

  x402 paid API · 2 endpoints

• text.openverbs.com Live x402

  Diff two texts. The default `unified` mode returns a unified-diff patch string; `lines`, `words`, and `chars` modes return a structured array of added/removed/unchanged parts. (4 paid endpoints on text.openverbs.com.)

  x402 paid API · 4 endpoints

• the-stall.intuitek.ai Live x402

  Earnings calendar for upcoming US stock reports — earnings date, EPS estimate, pre/post-market timing. Filter by ticker for per-company lookups, or scan a date window (1–90 days ahead) for calendar-driven research autom…

  x402 paid API · 4 endpoints

• thetrustlayer.xyz Live x402

  Agent profile lookup. Returns trust score, component breakdown, feedback counts, and metadata for any ERC-8004 agent. (2 paid endpoints on api.thetrustlayer.xyz.)

  x402 paid API · 2 endpoints

• thevaultreport.com Live x402

  CFTC Commitments of Traders — weekly disaggregated futures positioning by commodity: managed-money long/short/net, producer-merchant, swap-dealer, and open interest. 20-year history, cleaned and canonicalized from the C…

  x402 paid API · 4 endpoints

• tick.hugen.tokyo Live x402

  Get real-time Best Bid/Ask for any FX pair, aggregated from multiple institutional liquidity providers. 62-88% tighter spreads than any single source. Includes quality metadata (fresh_sources, quality_state, spread_vs_s…

  x402 paid API · 3 endpoints

• tls.openverbs.com Live x402

  Open an SSL/TLS connection to a host and report its certificate — issuer, subject, validity window, days remaining, SANs, fingerprint and trust status.

  x402 paid API · 1 endpoint

• toll402.dev Live x402

  Offline structural validator for an Indian CIN (Corporate Identity Number, 21 characters). Parses and checks: listing status letter (L/U), 5-digit NIC industry code, 2-letter state code (against the known MCA state-code…

  x402 paid API · 12 endpoints

• tollbooth-fdic-verify.sjwilliams8.workers.dev Live x402

  Before your agent trusts, cites, or transacts with a U.S. bank: verify it is actually FDIC-insured, for $0.01, against the FDIC's own BankFind Suite records, synced daily. Look up by institution name (fuzzy, word-order-…

  x402 paid API · 1 endpoint

• toolbelt402.tpoborne.workers.dev Live x402

  Check a URL before fetching it: is it alive, final URL after redirects, HTTP status, content type, HTML title, and whether robots.txt allows your user-agent. Link checker and fetch preflight for agents. (2 paid endpoint…

  x402 paid API · 2 endpoints

• toolrail.dev Live x402

  Current 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. (30 pai…

  x402 paid API · 12 endpoints

• tools.halowerk.com Live x402

  Ordnet eine Warenbeschreibung der sechsstelligen Harmonisierten Nomenklatur der Weltzollorganisation zu, 6.940 Positionen. Versteht deutsche Warenbezeichnungen einschliesslich zusammengesetzter Woerter ueber einen Fachw…

  x402 paid API · 12 endpoints

• tools.ipintel.ai Live x402

  DNS Lookup API. Resolve domain DNS records and receive structured JSON with A, AAAA, MX, NS, TXT, CAA, and SOA records. Useful for agents, developers, domain diagnostics, email setup checks, DNS troubleshooting, and inf…

  x402 paid API · 8 endpoints

• torii-gateway-production.ichis-lab.workers.dev Live x402

  Tell whether a given date is a Japanese business day. Japanese national holidays and business-day calculations derived from the Cabinet Office official CSV. Returns holidays for a given year, plus business-day arithmeti…

  x402 paid API · 1 endpoint

• touchstone.locomot.io Live x402

  Timelock encryption (tlock / encrypt-to-the-future): seal a payload toward a future drand round — undecryptable by anyone, including us, until that round lands; or open a landed seal. For sealed-bid auctions, commit-rev…

  x402 paid API · 12 endpoints

• trabotpro.it Live x402

  Hero SKU: Pearl Research L1 telemetry (pearld RPC, community nodes, poll history). Free trial: GET /api/a2a/pearl/status (3 paid endpoints on trabotpro.it.)

  x402 paid API · 3 endpoints

• trade.chainverdict.xyz Live x402

  Resolve a GTIN/EAN prefix to its GS1 Member Organisation (not country of origin). (8 paid endpoints on trade.chainverdict.xyz.)

  x402 paid API · 8 endpoints

• trade.lonestaroracle.xyz Live x402

  US trade-flow + tariff signal by commodity

  x402 paid API · 1 endpoint

• tradesnack.com Live x402

  Multi-indicator technical analysis (SMA/EMA crosses, Bollinger, RSI, candlestick patterns, support/resistance, trendlines, experimental Elliott Wave) for any crypto pair.

  x402 paid API · 1 endpoint

Related capabilities

On-chain dataTrading & marketsAI models & inferenceMaps & travelResearchAgent infrastructureSecurity & trustCrypto market data

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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