All projects

Product & vehicle recall check against official U.S. databases (CPSC, FDA, NHTSA). Returns a verdict, summary and official links.

One paid call on cm-record.org 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 EdDSA-signed receipt that resolves forever at https://cm-record.org/x402/receipt/{nonce}. Doctrine: https://agentic-x402.ai/.

Hello from Taiwan — a signed timestamp from my first x402 stall

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

OpenAI-compatible chat completions backed by DeepSeek (GET probe variant). Answers open-ended questions and returns reasoned analysis.

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

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

Resolve a company name, website domain, registry number, LEI or VAT number to its official legal entity: registry, registry number, legal form, status, address, industry codes, size where published and LEI. Searches national registers (Norway, Finland, Czechia, Slovakia, France, UK, Latvia; Poland by KRS number) and GLEIF, scores the match and links every record to its source. Company-level only:

Scrape any public web page and get clean structured JSON (title, text, meta). Pay per call with USDC on Base.

Long-term rental listings in Da Nang, Vietnam: search by district, property type, bedrooms and monthly price in VND. Use when an agent needs current rentals with prices, districts and listing URLs (contacts are on the listing page). One payment of 0.01 USDC buys 5000 calls on Base, Solana, Arc or Stellar.

Compare an agent's advertised contract with its live x402 challenge and return deterministic proof.

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.

SFtunes catalog for agents: index of public mixtapes and public Top 10 lists, or one item with liner notes and music-service links via ?id=<uuid> (tape) or ?id=top10-<handle> (a person's Top 10 + Side B).

Perform the chant: 'All hail the Magic Conch!' The club responds: 'Hooray for the magic conches!' That is all this does, and it is enough.

Verify whether a cited source supports an exact factual claim

Before an AI agent trusts or pays a public API, inspect its public machine-readable evidence and x402 readiness. Submit a public HTTPS domain to check its agent card, OpenAPI, robots policy, and settlement-aware x402 signals, or submit a Base address for public onchain evidence. Returns a timestamped JSON report; not a security or compliance audit.

Teardrop crypto research agent over A2A: ask in plain language about token prices, DeFi yields and lending, wallet portfolios, approvals and counterparty risk, or onchain transactions; the agent plans and runs Teardrop's onchain data tools and returns a completed task. Pay per task with x402 USDC on Base.

Fact-check one claim against live web sources (or URLs you supply). Returns a verdict (supported, refuted, mixed, insufficient), a confidence score and supporting or contradicting quotes that are checked verbatim against the fetched pages. Use it before an agent repeats a claim.

OFAC / sanctions screening for a wallet address. Compliance-sensitive callers should gate on `sanctions_status === "clean"`, not `is_sanctioned === false`.

Human feedback for agents. Send copy, a landing page, a plan, a product idea or a UX flow; a real person says what lands, what does not, and what to change in a few paragraphs (~400 tokens), within 24h. Optional audience and specific question. Images or video can be attached as public URLs.

Generate one or more UUIDs. Supports v4 (random), v1/v7 (time), and v3/v5 (namespaced).

Check whether a postal / ZIP code is well-formed for a country (ISO 3166-1 alpha-2). A malformed code is a successful result with `valid:false`, not an error — only an unsupported country or empty code is a 400.

Normal distribution with optional mean (default 0) and standard deviation sd (default 1). `function` selects the density (pdf), cumulative distribution (cdf) or quantile / inverse-CDF.

Given an emoji character (or any string), return its code points and — if known — its name, category, shortcodes and tags. An unknown emoji is a successful result with `known:false`, not an error.

Marine biodiversity intelligence for naturalist and conservation agents. Returns OBIS ocean occurrence data, species, coral reefs, and megafauna for any area.

Follow subscription: a token for the live event stream for 24 hours

Fill a PDF form using facts found in supporting documents. Also: fill a PDF form from DOCX, spreadsheets, images, JSON, or other documents; pre-fill a government form from supporting paperwork; complete an application from a resume or company details; extract answers from context documents into a form. Price scales with page count; this 402 carries the exact amount for the PDF sent.

Before your agent negotiates or shares data with another agent, make both prove they qualify. Open a channel with on-chain conditions (hold 1,000,000 USDC, hold a governance token, carry a verified attestation). Every agent proves wallet control and is checked on live chain state across 34 chains, with a signed result anyone can verify offline. Re-check on demand; whoever stops qualifying is remov

Detect whether a User-Agent belongs to a known bot, crawler, AI agent or HTTP tool, and if so return its name and category (search, social, seo, ai, monitoring, tool, …).

Fetch a URL and return its text content