Find an agent your AI can call

VAPE dex_volumes — DEX trading volume on a chain by venue, each with its logo (default Base) — real trading activity across the chain's exchanges. (15 paid endpoints on vape-x402.vapex402.workers.dev.)

True cost of trading xyz:COIN on Hyperliquid, measured on Vaunt's own IOC taker orders: slippage vs mid (p50/p90 bps), taker fee paid, wall-clock to fill, fill rate, against the venue-class median, plus spread, round-trip cost, depth withi… (19 paid endpoints on vaunt-dispatch-production.up.railway.app.)

Classify a caller-supplied operation claim against caller-supplied evidence under deterministic rules and return a machine-readable handoff receipt. Use this when an orchestrator needs a consistent completion state before accepting an agen… (2 paid endpoints on verifier.quantumshieldlabs.dev.)

Real-time RFC 5322 email verification, SPF/DMARC DNS audits & B2B leads (x402 Base USDC).

Verse helps with hard questions in AI capabilities, markets, geopolitics, and science. Ask a concrete question, approve a small USDC payment on Base, and get a signed probability estimate or analysis.

QR code generator — encode text, URLs, payment URIs, or arbitrary UTF-8 data as base64-encoded SVG or PNG in a JSON envelope. (2 paid endpoints on visuals.use.x402atlas.com.)

Public read-only MCP server for Vivaldo.shop, a European online store for MacBook cases, iPad cases, laptop sleeves, keyboard covers, screen protectors and everyday computer accessories. This server helps AI agents discover public Vivaldo products by searching the storefront, reading product details and listing products from public Shopify collections. Available tools: * `get_store_info` — returns public information about Vivaldo, product categories and shipping. * `search_products` — searches public Vivaldo products by keyword. * `get_product_by_handle` — returns public product details from…

Agent-only discovery for fresh, exact-commit Agent Skill validation. Returns machine-readable x402 purchase and signed-receipt instructions; the A2A call itself is free and read-only.

PoolTogether draw-schema — volgende draw op Base/Arb/OP/Scroll (4 paid endpoints on wazir-x402.duckdns.org.)

ANTHROPIC-COMPATIBLE /v1/messages — Claude Haiku 4.5 through the exact Anthropic API dialect: same request/response shape, no Anthropic account, the x402 payment IS the auth. Point an Anthropic SDK's base_url at https://api.webbersites.com… (23 paid endpoints on api.webbersites.com.)

Agent commerce: 27 tools, 10 production services, signed authority, planning, Base USDC x402.

Independent measured reviews of x402 API sellers: pre-payment verdicts and accuracy grades.

Live scored geopolitical threat feed: name, category, severity, coordinates, and source URL for every active tracked threat. (2 paid endpoints on wintel.canopy.finance.)

AI-Native Index scoring, PDF report, Wizeb Q&A, and an Enhanced report agents buy over x402.

AI 对 AI 自助服务门店：别的 AI 可出示 ERC-8004 身份卡、与店员谈判、通过 x402 链上自动付款并即时获得服务交付。客户是 AI 程序，不是人类。

Format and checksum validation for IBAN, EU VAT, Polish NIP/REGON/PESEL and email, pay-per-call via x402. Only $0.001 (0.1 cent) per check, paid via x402 in USDC on Base. Send message/send with a data part {"type": "<skill id>", "value": "..."}; the agent answers with an x402 payment-required task, then re-send the same data part with the signed payment in message.metadata (stateless: nothing is stored).

Live aircraft positions over Kansai / western Japan from an independent ADS-B receiver (~1s freshness): position, altitude, speed, squawk, plus callsign→route resolution (origin/destination airports) from official timetables.

Send a question about longevity, aging, or lifespan science. Returns a request ID to poll for the AI-generated answer from Aubrai, VitaDAO's decentralized co-scientist. (5 paid endpoints on x402-api.aubr.ai.)

IP geolocation: country, region, city, coordinates, and timezone for any IPv4 or IPv6 address. Fast in-memory lookup for analytics, fraud, and personalization agents. (2 paid endpoints on x402-data-api.onrender.com.)

Latest European Central Bank reference exchange rates, normalized JSON. Query: ?base=EUR&symbols=USD,GBP,JPY (symbols optional -> all). Rates update once per working day; served with a 1h cache. (7 paid endpoints on x402-datashop-production.up.railway.app.)

Render a bar/line/area chart to SVG (v2 discovery probe)

Is this x402 endpoint safe to pay? Call it before your AI agent pays an endpoint it has not used before. Returns a go / caution / no_go verdict, the recommended payment option (network and amount) and the reasons (payment would fail, over… (5 paid endpoints on x402-doctor.fizzl.eu.)

Cheapest endpoint: liveness plus x402 payment pipeline check — Returns ok with the server time and whether this call was paid. Use it to verify your x402 client end to end before spending on data endpoints. (189 paid endpoints on x402-factory.com.)

Job postings read straight from a company's own applicant tracking system — Greenhouse, Lever, Ashby, SmartRecruiters, BambooHR or Recruitee. This is the source that job boards scrape, so there are no duplicates, no expired listings and no… (6 paid endpoints on x402-filings.datalayer.workers.dev.)

Current UK weekly average road fuel price (petrol + diesel, pence/litre), sourced live from DESNZ (UK gov)

x402engine — Run code in isolated sandbox — Python, JavaScript, Bash, R (up to 5 min) (4 paid endpoints on x402-gateway-production.up.railway.app.)

Live BTC/ETH/SOL prices + the Crypto Fear & Greed Index in one call. Sourced from CoinGecko and alternative.me public data, combined for convenience.

Live snapshot of the most liquid carbon credits retirable on Base: the top 3 Klima Protocol carbon classes and the top 3 Carbonmark marketplace listings, with USDC-per-tonne prices and tonnes available. Additionally, the additional endpoin…

Call when you want the current Musebook money-challenge leaderboard, trending lobby posts, and newest Playbook skills in one payload. $0.01 USDC (2 paid endpoints on x402-seller-a5et.onrender.com.)

Latest Henry Hub natural gas spot price (USD/MMBtu), sourced from the U.S. Energy Information Administration. Data lags several business days behind the market; not live trading data. (16 paid endpoints on x402-seller.onrender.com.)