Data x402 offerings

Change watch for does site use soundcloud embed: runs the check, compares it with the result from your previous call for the same domain (kept 90 days) and returns the current answer, changed true/false, the fields that changed with before/after values, and when it was last seen. Schedule it to be alerted when this changes. $0.02 per check.

GO-TO PRODUCT: what changed in the Daily Agent Signal since a date you read: complete added, changed (fields plus before/after) and removed records, diffed against our stored archive. Body { since_date }. Free first: /v1/signal_delta/availability?since_date= (absent baseline is 422, no charge) and /v1/signal_delta/example.

Supporting dataset: Agent Economy Briefing Pack compiled from Signal archive. Secondary to signal_latest/history/delta.

GO-TO PRODUCT: what changed in the Daily Agent Signal since a date you read: complete added, changed (fields plus before/after) and removed records, diffed against our stored archive. Body { since_da…

PDF Extract ($0.04): deterministic PDF -> per-page plain text + metadata, no OCR, no table extraction, no third-party PDF/OCR vendor -- text pulled directly from the PDF's own embedded text objects v…

Runs SQL queries against Drillr data and returns the results.

Parses ANSI X12 and UN/EDIFACT EDI documents into structured JSON, CSV, cXML, or a rendered Typst PDF invoice. $0.01 per document in any output format; payloads ≥10MB are metered up to $0.05 — see the 402 challenge’s `accepts[].maxAmountRequired` for the exact amount.

Deterministic CSV preflight for import hazards

U.S. Census demographic data by state or county. Population, income, poverty, unemployment, home values, education.

Country population, age bands, dependency ratios, fertility and birth rate from UN World Population Prospects via World Bank WDI, with source, licence, lag and missing data. Input: ?country=ISO3. Purpose: Give an autonomous agent a normalized country demographic structure with explicit observation years, consistency checks and missing indicators. 24-hour freshness target; missing evidence is reported explicitly rather than invented.

Chainlink oracle feeds: current answer, decimals and last-update age.

Email validation and email list cleaning. Checks each email address for RFC syntax, a live MX record lookup returning the real mail hosts, disposable-domain detection, role-account flags (info@, sales@, noreply@), and a free-provider flag, rolled into a per-address ok/risky/invalid verdict with reasons. Batch up to 25 email addresses per call. Domain-level DNS only, no SMTP mailbox probe. Keyless.

Batch 1-1000. Returns per-address valid plus detail codes.

Email address gmail normalized: pure parsing with no network call. Canonical form (Gmail ignores dots and +tags) for deduplicating signups. $0.01 per call.

Fuzzy-dedupe a list of records into clusters of likely-duplicate entities. Blocks by normalized token prefix, scores with Jaro-Winkler + token-set matching (exact on email/phone), unions matches abov…

Fuzzy-dedupe a list of records into clusters of likely-duplicate entities. Blocks by normalized token prefix, scores with Jaro-Winkler + token-set matching (exact on email/phone), unions matches above threshold, and returns a merged canonical record per cluster with a confidence score. Deterministic, no LLM calls.

Population on 1 January of every European country (ranking) or the evolution of one with annual growth. Official Eurostat data.

Bulk snapshot of every European government reference series in one JSON file for 34 European countries plus the EU: policy rates, VAT/GST, statutory interest, minimum wages, CPI, income, corporate and withholding tax, social contributions and holidays, plus official FX reference rates. Every value cited with source URL, effective date and last_confirmed. Suited to caching the full dataset; single values are GET /v1/{country}/{series}.

Interpolate between two integer-coordinate points with exact rational arithmetic and an integrity receipt. Refuses extrapolation and repeated nodes. Does not estimate measurement error or validate the interpolation model.

Extracts structured expense records from input data using AI.

Extract from any text, without AI: emails, URLs, phone numbers, IBANs, EVM/Bitcoin/Solana addresses, transaction hashes, IPs, dates, amounts, hashtags, mentions and Spanish tax IDs, deduplicated.

Pull emails, URLs, IPv4s, @mentions, and #hashtags out of free text. Returns deduped lists.

Extract and normalize every number in a text: amounts with currency (€, $, USDC, BTC...), percentages, multipliers (k, million, bn) and plain figures, understanding both 1.234,56 and 1,234.56, with totals per currency.

Extract acronyms mentioned on a page: heuristic (pattern-based, no ML) recognition over the readable text, returning the distinct mentions with counts. Fast entity lists for tagging and triage; verify anything important. $0.01 per page.