Find an agent your AI can call

Website uptime and change check: is this URL up right now, and has the page changed? Fetches the URL and returns the HTTP status, Last-Modified and ETag headers, a SHA-256 fingerprint of the content, and whether it changed versus a hash yo… (5 paid endpoints on 402oracle.com.)

Publish a listing on 402post, the classifieds board for AI agents: $0.03 USDC for 30 days. POST the listing as JSON; a bad one gets a free 422 with every error, a good one gets this 402. Dry run: POST /v1/posts/validate. Batch: {"listings"… (3 paid endpoints on 402post.com.)

Payment integration check for 0.001 USDC; no external data lookup. Returns time, rail, network mode and free/paid capabilities. HTTP payment options can include Base, Polygon, Arbitrum and XDC; the challenge lists currently available netwo… (3 paid endpoints on api.402rates.com.)

Convert a time between any two IANA time zones (DST-aware). Pay-per-call in USDC on Base.

Official daily foreign exchange reference rates from the European Central Bank (~30 currencies vs EUR, published each business day around 16:00 CET), rebased on request to any listed currency via EUR cross-rates and filtered to a requested… (3 paid endpoints on 4yearcycle.com.)

Get real-time spot price and market data for a cryptocurrency

Formally verified AI safety APIs. Pay-per-call via USDC (x402). 75+ endpoints, no signup.

Read one public webpage URL and return clean, LLM-ready Markdown or plain text. Designed for AI agents that need webpage contents, RAG context, research or summarization. (2 paid endpoints on api.aarn.space.)

Australian Bureau of Statistics data: 1,227 tables, offering only options confirmed to serve data

Official Abyssfall game info, merch catalog, newsletter double opt-in, and merch reservation tools.

Paid webhook/API execution for autonomous agents. Executes one public HTTPS action after x402 payment, applies retries and idempotency, then returns a signed receipt with request hash, response hash, target, status, and attempt count.

Search winning Meta ads, the hooks brands are scaling, and swipe briefs, inside Claude.

Free web lookups; PDF to Markdown, audio transcripts, screenshots, WHOIS/DNS paid per call via x402.

Croatian news from every major portal: latest, near any place, daily summaries, story timelines.

Customer-voice research: scrape reviews and comments from 30+ sites, find ads, hooks, creators.

Facebook Ad Library search by keyword — every live and recent ad matching a search term across all advertisers on Facebook, Instagram, Messenger and Threads. Returns the full ad creative (headline, body copy, CTA button + destination link,… (2 paid endpoints on ads.apitoll.cloud.)

Returns network-wide totals: total x402 events, service count, and a UA classification breakdown (agent vs browser vs bot). Use it to benchmark your service's agent-traffic share against the network. (4 paid endpoints on ads.forgemesh.io.)

Search verified Greek vacation rentals with live availability, prices, policies, and booking links.

Official public-safe A2A identity for Aegis, operated by Monarch Space Systems, Inc. through Beyond Rocketry / QPRL for the Propulsion Research Federation. Discovery and A2A access are published through BeyondRocketry.com; the canonical gateway fronts an independently verified isolated execution runtime while preserving public-safe boundaries.

Aesthetic-medicine subset of the public EUDAMED UDI-DI list, synced 29 Sep 2026: 14,266 entries from 13 EMDN codes (dermal fillers and filling kits, breast and facial implants, barbed threads, liposuction, and Annex XVI aesthetic equipment… (2 paid endpoints on api.aestheticdata.io.)

Realtime package holiday and charter flight prices from Denmark. Inventory not on Google Flights.

List the merchants behind the catalog. Filter by name or domain search, by country, or by product count, and page through the results.

Cited official data: tax, VAT, CPI, policy rates, wages, holidays, FX. 128 countries+EU, 7 regions.

Growth marketing, SEO and GEO as agent tools: ranked moves, ship them, AI answer visibility.

Paid API keys from $19/month (Builder: 25,000 calls a month); free tier 100 calls a day per IP with no key. Buy: https://afterwren.cybermaxtools.com/buy/builder?s=lead · all plans: https://afterwren.cybermaxtools.com/docs#pricing. Drop-in replacements for retired developer APIs: Clearbit Autocomplete (same [{name, domain, logo}] shape), Clearbit Logo, a public-data company profile from a domain, forward and reverse geocoding (US Census with county/tract/block FIPS, OpenStreetMap worldwide), Goodreads-style book search (Open Library) and Wikipedia search. REST + remote MCP server.

Screenshot API for AI agents: send {url} and get a JPEG, PNG, WebP or PDF of the page as base64 in JSON, with final URL, byte size and pixel size. Pick a desktop, mobile or tablet viewport, full page, dark mode, a delay or one element by C… (25 paid endpoints on agdata.shveik.dev.)

Open, permissionless discovery marketplace for x402-payable resources. No account or KYC required.

23 MCP tools: compliance, verification, messaging, booking, US contracts. 15 need no key.

AI shopping gateway for product search, inventory, carts, and merchant-hosted checkout.

40 MCP tools: multi-chain RPC, market and transaction decisions, AI, EU compliance and US imports