Explore APIs

Official Czech National Bank daily FX fixing (CZK per unit) as JSON, optionally for a past date.

Scan text for accidentally-committed secrets (API keys, tokens, private keys) before you publish it.

Public holidays via Nager.Date (keyless). ISO country + year → holiday list.

Public Wikidata relationship graph (≤2 hops). Fixed property list; privacy bounds (no family/contact). Empty+reason → charged:false. Amp port.

News brief with sources (GDELT headlines+links only). No article body republish. No charge on empty/failed.

Project Gutenberg books via Gutendex (keyless). search/topic/ids/author_year → trimmed book list.

Open-Meteo geocoding (keyless; Nominatim replacement). name (+ count/language/country) → trimmed places (name/lat/lon/country/admin1).

Extract entities/fields from text into a caller JSON Schema. Wikidata QID links + source spans. Fail closed (no charge) if output does not validate.

Dictionary definitions via api.dictionaryapi.dev (keyless). Word → meanings (partOfSpeech + definitions), phonetics, sourceUrls.

Country metadata (keyless). name or code (cca2/cca3) → name/capital/region/currencies/languages/flags/population. restcountries v3.1 with apicountries fallback.

Stylometric AI-writing detector (~78% in-sample bench; not field accuracy). Uncertain → invite longer sample (ideally 300+ words). Amp port — honesty preserved.

Palette contrast matrix (WCAG AA/AAA) + nearest passing color suggestions. Offline.

Call GET /api/pulse?symbol=ETH for a one-line live token price on Base. $0.001 USDC. Use when you only need the number, not a brief.

Validate an email address: format check plus a live MX record lookup on its domain

Port/chokepoint congestion index (daily & live, computed from public AIS)

Location and areas for a Great Britain postcode: latitude and longitude, ward, district, constituency and region, as JSON.

Example premium technology research report

Full knowledge unit content (query param: id). Digital content, delivered in full on payment: it cannot be withdrawn once delivered unless it differs from its listing (WITAN terms, section 4).

Clean a CSV ($0.005 USDC): give an https url or inline csv (max 1 MB / 20k rows). Trims whitespace, optional case rules, dates to ISO 8601, lowercases emails, normalizes phone digits, merges or flags exact + fuzzy duplicate rows on key_columns. Returns cleaned CSV text + JSON report (rows in/out, dupes, columns changed). Deterministic, no AI. As is, no warranty. Nothing stored.

Unpaid probe of a public https URL for x402 payment requirements ($0.005 USDC). Never pays. Returns HTTP status, latency, whether 402/payment-requirements parse, networks, min price, schema flag. https only; caps ~12s, 200KB, 5 redirects. Factual only; as is, no guarantee. Not a rating or certification.

Pre-share leak check ($0.005 USDC via x402). Scan text or an https text URL for your own terms (plain list, or salted-hash list sent per call, never stored) plus leak-shaped strings: emails, coordinates, IPs, AWS/GitHub/Slack/sk- keys, private keys, JWTs. Binary URLs are listed as unscanned. Max 10 MB, https only. Returns JSON hits with line numbers. A clean scan is not a clearance.

Extract text and tables from a Word .docx file ($0.005 USDC via x402). Input: a public https url to a .docx, or docx_base64. https only — http, file, data, localhost, and private IPs are rejected. Caps: 10 MB file, ~15s timeout, max 5 redirects. Tables appear as [table N] placeholders in text. Unicode dashes/minus signs normalized to '-'. Old binary .doc files are not supported. Returns JSON { fil

Fetch a public https URL, compute SHA-256 of the response body, and report whether it changed vs a prior sha256/etag ($0.01 USDC via x402). Sticky: store sha256 and call again later. Optional previous_sha256, previous_etag, include_body_if_changed. https only — http, file, data, localhost, and private IPs rejected. Caps: 1 MB body, ~10s timeout, max 5 redirects. Returns JSON { url, final_url, cont

Fetch a public https URL that returns text and compute byte/char/line/word counts plus SHA-256 ($0.005 USDC via x402). https only — http, file, data, localhost, and private IPs are rejected. Caps: 1 MB body, ~10s timeout, max 5 redirects. Rejects image/audio/video/octet-stream. Returns JSON { url, final_url, content_type, byte_length, char_count, line_count, word_count, sha256, warnings }.

Convert a public https RSS 2.0 or Atom feed URL to tidy markdown ($0.005 USDC via x402). https only — http, file, data, localhost, and private IPs are rejected. Caps: 1 MB body, ~10s timeout, max 5 redirects. Optional max_items (default 20, cap 50). Returns JSON { url, final_url, feed_title?, feed_link?, format, items, markdown, item_count, warnings }.

Fetch a public https URL and extract HTML head metadata ($0.005 USDC via x402). https only — http, file, data, localhost, and private IPs are rejected. Caps: 1 MB body, ~10s timeout, max 5 redirects. Returns JSON { url, final_url, content_type, title?, description?, canonical?, lang?, open_graph, twitter, warnings }.

Fetch a public https CSV URL and parse it into headers + rows ($0.005 USDC via x402). https only — http, file, data, localhost, and private IPs are rejected. Caps: 1 MB body, ~10s timeout, max 5 redirects, max 5000 data rows (truncated with warning). Optional has_header (default true). Returns JSON { url, final_url, content_type, headers, rows, row_count, warnings }.

Convert HTML to tidy markdown ($0.005 USDC via x402). Pass html (string) and/or url (public https to fetch). At least one required; if both, prefers html and warns. URL fetches use the same allowlist as WELL-002 (https only — http/file/data/localhost/private IPs rejected; 1 MB body, ~10s timeout, max 5 redirects). Returns JSON { source, url?, final_url?, content_type?, markdown, warnings }.

Convert a public https URL that returns JSON to tidy markdown ($0.005 USDC via x402). https only — http, file, data, localhost, and private IPs are rejected. Caps: 1 MB body, ~10s timeout, max 5 redirects. Requires JSON content-type or a parseable JSON body. Returns JSON { url, final_url, content_type, markdown, warnings }.

Convert a public https URL to markdown ($0.005 USDC via x402). https only — http, file, data, localhost, and private IPs are rejected. Caps: 1 MB body, ~10s timeout, max 5 redirects. Returns JSON { url, final_url, title?, content_type, markdown, warnings }.