Every agent-payable API.

Individual arena strategy signal

Individual arena strategy signal

Individual arena strategy signal

Individual arena strategy signal

Individual arena strategy signal

Indonesia 500 MB: a prepaid travel eSIM with 500 MB of data for 1 day. Buy it when a traveller needs mobile data abroad without a local SIM card or roaming fees. Pay in USDC on Base with x402, no account or API key needed. The installable eSIM (QR code, LPA activation code, one-tap iPhone and Android links) is ready within seconds from order_status_url. Optional JSON body: quantity (1 to 20) and email.

Reasoning-puzzle dataset pack for AI agents from The Latent Lounge: 25 freshly generated puzzles where you infer a hidden string transformation from worked examples, then apply it — each with its verified answer and a worked explanation, as JSON in one x402 payment. Unscored and separate from the leaderboard; licensed for training and evaluation use.

List a wallet's native ETH and USDC balances with human-readable amounts. Canonical wallet-balance contract for autonomous agents: address plus optional CAIP-2 chain.

Detect meaningful webpage changes with deterministic hashes and diffs for prices, docs, policies, availability and competitor monitoring.

Extract title, description, Open Graph, Twitter cards, canonical URL, robots directives, headings, JSON-LD and other page metadata.

See which industries are unusually concentrated in a U.S. county using validated BLS QCEW location quotients, employment shares and wage comparisons.

Infer a JSON Schema (draft-07) from a sample document in any supported format. Types are inferred, present keys are marked required, and heterogeneous array item schemas are merged. The result validates out of the box with /v1/validate.

Infer a JSON Schema (draft-07) from an example value, walking objects and arrays recursively. Set detectFormat=true to tag strings that look like date-time/date/email/uri/uuid, requireAll=false to leave object properties optional, and additionalProperties=true to allow extra keys.

Restate an amount from one year in another year's money, for any country in the World Bank consumer-price series (1960 onwards). Returns the adjusted amount, the cumulative inflation and both index values so the arithmetic is checkable. The series is annual and published with a lag, so a request for a year that does not exist yet answers with the newest one available and says which. For contract comparisons, historical pricing and long-running budgets.

Returns harmonised consumer price inflation for several countries over a period, taken entirely from the European harmonised index so the numbers are actually comparable. That constraint is the product: national consumer price indices use different baskets, treat owner-occupied housing differently and rest on different base years, so placing them side by side produces a comparison that looks valid because everything is expressed in percent and is not.

Infoharmoni Atlas Pro, sellers.csv: Every x402 seller in today's registry snapshot, one row each: what it sells, its price, the registry's own call counts, and beside them the x402 payments read off Base in the last window, payer wallets and who the top payers are. CSV. Stamped with the snapshot date.

One x402 seller's report card before you pay them: what they sell, paid calls and payers in 30 days, price, rank of all sellers, rivals, and the day-by-day replay nobody else stored. Stamped with the snapshot date. Refusals are free.

Resolves two products to their RxNorm concepts and compares what the register declares about each: the active ingredient set, the strength per ingredient, the dose form and the route of administration. Every difference is listed individually rather than collapsed into a verdict, and matching ingredients with differing strengths are reported as such rather than as a match.

Free public-domain books on "Inheritance and succession": browse the catalogue's works tagged with that Library of Congress subject (391 in Project Gutenberg alone, plus Internet Archive scans), ranked by relevance and popularity, with direct epub/txt/html download links. Add words to narrow by title or author. Re-verified daily. $0.01 per page of 20.

Initiate a web page scrape

Screen untrusted text against known prompt-injection patterns (pattern matching, not a model). Returns which named patterns matched.

Injective (INJ) price in USD now, with 24h and 7d change — Genesis402 / UnyKorn Operator Network

Ink DeFi overview: TVL trend, top protocols, stablecoins, DEX volume, fees — Genesis402 / UnyKorn Operator Network

SEC Form 4 insider trading for one US stock ticker, for trading agents (Coinbase for Agents / x402 market data). Every insider buy/sell/grant/gift in the window: name, role, date, transaction code, shares, price, shares owned after, filing url, plus open-market buy vs sell counts and dollar totals. Facts only - not a signal. Source: SEC EDGAR. ?ticker=AAPL&days=1-365 (default 90)&limit=1-25.

SEC Form 4 insider trading for one US stock ticker, for trading agents (Coinbase for Agents / x402 market data). Every insider buy/sell/grant/gift in the window: name, role, date, transaction code, shares, price, shares owned after, filing url, plus open-market buy vs sell counts and dollar totals. Facts only - not a signal. Source: SEC EDGAR. ?ticker=AAPL&days=1-365 (default 90)&limit=1-25.

Which public companies are insiders buying as a cluster right now? Bulk feed over SEC Form 4 open-market BUY clusters — issuers where several distinct officers/directors/10%-owners bought in a trailing 30- or 90-day window. Flat rows newest-first by the cluster's most recent buy, cursor-paginated up to 1000/page, filterable by ticker, exchange, min insiders, min value, window, or since. Every issuer is a public company with ticker and CIK. Observational filings as filed, never advice.

All SEC Form 4 insider transactions for one issuer (ticker or CIK), newest first, within a txn-date window

One reporting owner's SEC Form 4 transactions across every issuer they file for — track serial founders, activists, and fund principals

Aggregate insider-flow analytics for one issuer — open-market buy vs sell net flow, non-open-market breakdown, cluster-buy detection, and a per-insider ledger

Recent-window SEC Form 4 insider transactions (buys/sells), newest first — filter by transaction code, minimum USD value, and insider role

Name a US ticker and get one cited insider-flow report: every Form 4 against the company in the window with the actual transactions parsed from the filings - open-market buys and sales (who, when, how much, at what price) separated from awards, option exercises and tax withholding - aggregated per insider and as a net flow, with a grounded signal read and a downloadable transactions appendix. SEC EDGAR data, not investment advice. USDC (x402/MPP) or card (Stripe). Not cached.

Dutch bankruptcy and insolvency check against the official Central Insolvency Register of the Dutch judiciary (rechtspraak.nl). Detects published bankruptcy (faillissement), suspension of payments (surseance) and debt restructuring procedures. Best results with a KVK number. Returns procedure type, status, dates, court and a source reference per match, with explicit match-basis and coverage notes. A no_match means no publication in the currently searchable register. Companies only.

French insolvency check against BODACC, the official bulletin of civil and commercial announcements (DILA open data). Searches collective procedures (sauvegarde, redressement, liquidation judiciaire), conciliation and professional recovery announcements by SIREN. Returns judgment nature and date, court, publication date and a direct BODACC link per announcement. A no_match means no publication in the searchable set (since 2008) — no historical clearance. Companies only.

Inspect a public URL: HEAD redirect trace, DNS A/AAAA observations and security headers in one report. At most 4 targets, no page body. Includes timestamps, partial-result warnings and factual findings; no safety or reputation verdict.

Lint any x402 endpoint or payment header against the v2 spec and real CDP facilitator behavior: CAIP-2 network ids, atomic amounts, the EIP-712 domain-name trap ('USD Coin' on Base mainnet vs 'USDC' on Sepolia — wrong name = every settlement fails), the extensions echo Coinbase Bazaar requires for indexing, expired authorizations. Findings as error/warning/info with what will actually break. Built by a seller that debugged all of these in production.

Complete DNS inspection in one call over DNS-over-HTTPS: A, AAAA, MX, TXT, NS, CNAME, SOA and CAA records with TTLs — plus a derived email posture analysis (SPF present and policy, DMARC present and policy, MX count, overall assessment) that raw lookup tools don't do.

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

Check that an x402 endpoint still returns a valid payment challenge, and read its price and recipient. Probe an x402 endpoint and report whether it still returns a valid payment challenge: HTTP status, challenge source (v2 header or legacy body), scheme, network, asset, payTo, amount in atomic units and in USDC, and a…

Inspect any pay-per-call (HTTP 402) endpoint before you pay: decodes its payment terms (version, network, asset, price in dollars, payee), checks the listing metadata, and lists problems that make agents fail.

Inspect any MCP server like a client would: does it connect, which protocol version, does it need sign-in, how fast, how many tools, and which tools have missing or weak descriptions or input schemas. A checklist of fixes for server owners.

Fetch a URL (following redirects) and return the final response's HTTP headers, the server banner and content-type, plus a security-header audit reporting HSTS, Content-Security-Policy, X-Content-Type-Options, X-Frame-Options, Referrer-Policy, Permissions-Policy and the cross-origin policies (with the missing ones listed). No body is downloaded or parsed.

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

Inspect the latest npm package release: version, license, dependency counts, engine requirements, deprecation notice and source links. Does not download or execute package code.

Inspect URL reachability, status, latency, and key headers for $0.001 USDC. Call when you need a cheap uptime preflight before paying a heavier fetch—not a full page extract and not a crawl. Returns status and timing via x402. No API key, no subscription.

Validate a UUID and report its version and variant.

Resolve a single code point (given as 'char' or 'codepoint') to its name, general category, block, script and plane. Provide exactly one of the two inputs.

Report the properties of a MAC address encoded in its first octet: unicast vs multicast (I/G bit), universal vs locally-administered (U/L bit), the broadcast address, and — for EUI-48 — the OUI and NIC portions.

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.

Break a string into its Unicode code points, each with its U+ notation, decimal value and UTF-8 / UTF-16 byte layout, plus total byte lengths.

Fetch any URL and, without paying, decode its x402 402 Payment Required challenge: price (atomic and formatted for known stablecoins), asset, network, payTo, resource, description, timeout and any input schema. Flags MPP and Bazaar discovery extensions. Returns free:true when no payment is needed. SSRF-hardened: public hosts only; private, loopback, link-local and cloud-metadata addresses are rejected.