EU/UK/CH VAT number format check: verifies the country prefix and the national number pattern (no live VIES query), returning the country and whether the format is plausible. First-line validation for invoices and onboarding. $0.01 per check.

Current weather for any place name or coordinates: temperature, feels-like, humidity, wind speed and direction, precipitation, cloud cover, condition text, plus the resolved location and timezone. Free Open-Meteo data, no key. $0.01 per lookup.

Current weather in Buenos Aires right now: temperature, feels-like, humidity, wind, precipitation, cloud cover and conditions from Open-Meteo, plus today's sunrise/sunset. No API key. $0.01 per call.

Current weather in Rome right now: temperature, feels-like, humidity, wind, precipitation, cloud cover and conditions from Open-Meteo, plus today's sunrise/sunset. No API key. $0.01 per call.

Current weather in Seoul right now: temperature, feels-like, humidity, wind, precipitation, cloud cover and conditions from Open-Meteo, plus today's sunrise/sunset. No API key. $0.01 per call.

Current weather in Stockholm right now: temperature, feels-like, humidity, wind, precipitation, cloud cover and conditions from Open-Meteo, plus today's sunrise/sunset. No API key. $0.01 per call.

Wikipedia search: the top 10 matching articles with title, snippet, word count and URL. Find the right article before pulling a summary. $0.01 per search.

Wikipedia summary: the lead paragraph, short description, thumbnail, page URL and coordinates for a topic, resolving redirects and falling back to search when the exact title does not exist. Quick grounded facts for any agent. $0.01 per lookup.

Wikidata entity lookup: the Q-id, label, description, aliases, and key claims (instance of, country, population, inception, coordinates, official website, founder, headquarters) resolved to labels. Structured facts for grounding. $0.01 per lookup.

Word, character, sentence, paragraph and unique-word counts for text, plus average word length and the longest word. $0.01 per call.

YouTube video metadata without an API key: title, channel name and URL, thumbnail and video ID via YouTube's public oEmbed endpoint. $0.01 per video.

Decode JWT: paste a JSON Web Token and get the decoded header, payload claims, human-readable iat/exp/nbf times, expired or not-yet-valid status, seconds until expiry and security warnings such as alg=none. No signature verification, nothing stored. $0.01 per token.

Agent discovery card fetch: looks for /.well-known/agent.json and /.well-known/agent-card.json (Google A2A Agent Card) plus /llms.txt and /.well-known/ai-plugin.json, and summarises whatever is found: name, description, url, version, capabilities (streaming, push), skills (id, name, description, tags), auth schemes, input/output modes, and provider. Lets agents learn what another agent offers. $0.01 per domain.

AI-crawler policy of a website: reads robots.txt and reports, for 20 known AI/LLM crawlers (GPTBot, ChatGPT-User, OAI-SearchBot, ClaudeBot, anthropic-ai, CCBot, Google-Extended, Applebot-Extended, PerplexityBot, Bytespider, Amazonbot, cohere-ai, meta-externalagent and more), whether the root is allowed, blocked or unmentioned, plus an overall stance (open / selective / blocks-all-ai) and TDM/ai.txt hints. $0.01 per domain.

cdnjs library lookup: latest version, description, homepage, license, default file and its full CDN URL with SRI hash, GitHub repo, and the latest 15 versions. Instant script tags for front-end agents. $0.01 per library.

Checksums of a file at a URL (up to 5 MB): SHA-256, SHA-1 and MD5-free SHA-384 hex digests, the SRI string (sha384-…), byte size, content type, last-modified and ETag, plus the final URL after redirects. Verify downloads, pin script integrity, detect silent changes. $0.01 per file.

Cron expression evaluator: the next 10 run times in UTC for a standard 5-field expression (ranges, steps, lists, names like MON/JAN, */5), a plain-English description, and the interval between runs. Optional start time after a pipe. Validate schedules before deploying. $0.01 per expression.

did:web resolver: converts a did:web identifier (or domain) to its DID document URL (/.well-known/did.json or /path/did.json), fetches it and returns the id, controller, verification methods (id, type, public key kind), authentication/assertion references, services, and whether the document id matches the DID. Decentralised-identity checks for agent-to-agent trust. $0.01 per DID.

Recent tags of a Docker Hub image: up to 50 newest tags with last-updated date, compressed size and architectures, optional substring filter after a pipe (e.g. 'library/node | alpine'), plus counts. Pick base images and track updates. $0.01 per image.

RSS/Atom feed validator: fetches the feed, detects the format and version (RSS 2.0, Atom 1.0, RSS 1.0/RDF), checks well-formedness and required elements (title, link, id/guid, dates), counts items, flags missing/invalid dates, duplicate guids, relative links, missing descriptions, and the content type served. Returns valid true/false with errors and warnings. $0.01 per feed.

Detects the real type of a file at a URL from its magic bytes (40+ signatures: images, audio, video, archives, PDF, Office, executables, fonts, WASM, SQLite, text/JSON/HTML) and compares with the declared Content-Type and the URL extension, flagging mismatches. Also returns size, content-disposition and whether the server supports ranges. Reads only the first 64 KB. $0.01 per file.

Language breakdown of a GitHub repository: bytes and percentage per language sorted by share, primary language, total bytes, language count, plus repo size and default branch. Tech-stack detection for due diligence and tooling decisions. $0.01 per repo.

Latest GitHub release of a repository: tag, name, published date, days ago, prerelease flag, author, first 600 chars of the release notes, and the downloadable assets (name, size, download count, URL). Falls back to the newest tag when a repo has no releases. $0.01 per repo.

License of a GitHub repository: SPDX id, full name, license file path, permissive/copyleft class, plus the license's permissions, conditions and limitations lists from GitHub's license metadata. Compliance check before vendoring code. $0.01 per repo.

README of a GitHub repository as plain text (markdown kept, up to 20k chars): tries the default branch and common README filenames, reports which file and branch matched, length, headings list, and the raw URL. Fast repo comprehension for coding agents. $0.01 per repo.

GraphQL endpoint check: sends a minimal introspection query and reports whether the URL is a GraphQL endpoint, whether introspection is enabled (a security signal), the query/mutation/subscription root type names, number of types, the first 40 query fields, and whether GET requests are accepted. $0.01 per endpoint.

Basic HTML lint (no external validator): unclosed or mismatched tags, missing doctype, lang, title, meta charset and viewport, images without alt, links without href or text, duplicate ids, inline event handlers, deprecated tags (font, center, marquee), and counts. Give raw HTML or a URL. $0.01 per document.

Explains HTTP headers: for each header name you give (comma-separated), what it does, typical values and an example, plus whether it is a request, response or both, and a security relevance flag. Covers 60+ common headers including security, caching, CORS, cookies and x402 payment headers. $0.01 per lookup.

Image dimensions from the first bytes of an image URL: width, height, format (PNG, JPEG, GIF, WebP, BMP, ICO, SVG), aspect ratio, orientation, byte size from headers and content type. Reads at most 64 KB so it is fast even for huge images. Validate og:image sizes, thumbnails and uploads. $0.01 per image.

jsDelivr CDN usage of an npm package over the last month: total hits, rank, bandwidth, daily hit series (last 14 days) and the top 10 versions by hits with their share. A popularity signal independent of npm download counts. $0.01 per package.

JSONPath extraction: evaluates a path like $.store.book[*].author, $..price, $.items[-1], $['key with spaces'] against a JSON document and returns all matching values with a count. Handles recursive descent, wildcards, negative indexes and bracket keys. $0.01 per query.

JSON Schema validation without external libraries: validates data against a schema supporting type, required, properties, additionalProperties, items, enum, const, min/max (length, items, properties, numeric, exclusive), pattern, format (email/uri/date-time), uniqueItems, multipleOf, anyOf/oneOf/allOf/not. Returns valid true/false and every error with its JSON path. $0.01 per validation.

JWT decoder (no signature verification, nothing stored): header (alg, kid, typ), payload claims, human-readable iat/exp/nbf, whether the token is expired or not yet valid, seconds until expiry, and warnings such as alg=none, missing exp, or very long lifetime. $0.01 per token.

Matrix homeserver check: reads /.well-known/matrix/server (federation delegation) and /.well-known/matrix/client (client base URL, identity server), probes the federation version endpoint on the delegated host, and returns server software/version, whether federation and client discovery are configured, and registration/login flows advertised. $0.01 per server.

MCP server probe (streamable HTTP): runs initialize and tools/list against a Model Context Protocol server and returns protocol version, server name/version, capabilities, instructions, tool count and the tools (name, description, input properties), whether a session id is issued, whether it answers with JSON or SSE, and if the server requires OAuth (401 + resource metadata). Discover what an agent can call before wiring it in. $0.01 per server.

MIME type reference: list all types in a category (image, audio, video, text, application, font, office), or look up a single file extension or MIME type to get its counterpart. 100+ mappings for setting Content-Type correctly and validating uploads. $0.01 per lookup.

Minifier for JSON (re-serialised compact), HTML (comments and inter-tag whitespace stripped, pre/textarea preserved), CSS (comments, whitespace, trailing semicolons) and simple JS (comments and blank lines; not a full parser). Returns the minified text, detected type, and bytes before/after with the saving percentage. $0.01 per document.

Fediverse NodeInfo for a server: follows /.well-known/nodeinfo to the newest schema and returns software name and version, supported protocols (activitypub…), total/active-month/active-half-year users, local posts, open registrations, and the server's inbound/outbound services. Instance vetting and federation research. $0.01 per server.

Direct dependencies of an npm package's latest (or given) version: the dependencies, peerDependencies and optionalDependencies with their ranges, counts of each, plus the engines field and whether the package has install scripts. One-hop supply-chain view. $0.01 per package.

License and provenance of an npm package: SPDX license of the latest version, whether it is permissive/copyleft/unknown, repository URL, homepage, maintainers (names only), author, funding link, and the license of each direct dependency for a one-hop compliance check. $0.01 per package.

All published versions of an npm package with publish dates, the dist-tags (latest, next, beta...), total version count, first and latest publish dates, releases in the last 90 days, and the 30 most recent versions. Release-cadence and pin-selection helper. $0.01 per package.

Maintenance-risk hints for an npm package: is the latest version deprecated (with the message), days since the last publish, whether any direct dependency's latest is deprecated, single-maintainer flag, and a simple risk label (healthy / stale / deprecated). Not a CVE scanner; a fast triage before install. $0.01 per package.

OAuth 2.0 authorization-server metadata (RFC 8414) with OpenID fallback: tries /.well-known/oauth-authorization-server then /.well-known/openid-configuration and returns the issuer, authorization/token/revocation/introspection/device endpoints, grant types, PKCE support, token auth methods, scopes, DPoP and PAR support. Also checks /.well-known/oauth-protected-resource for MCP-style resource metadata. $0.01 per server.

OpenAPI/Swagger spec summary from a URL: title, version, OpenAPI version, servers, path and operation counts, operations by method, tags with counts, security schemes, whether every operation has an operationId and description, schema count, and the first 60 operations (method, path, summary). Instant API comprehension for integration agents. $0.01 per spec.

PDF metadata from a URL: page count (from page objects), PDF version, title, author, subject, creator/producer, creation and modification dates from the Info dictionary or XMP, encryption flag, and byte size. Reads the first 2 MB, so counts for very large PDFs may be partial (flagged). $0.01 per document.

Pretty-printer: JSON (2-space indent, sorted keys optional via 'sorted:' prefix), HTML/XML (one tag per line, nested indentation) and SQL (keyword casing and clause breaks). Returns the formatted text, detected type and line count. $0.01 per document.

Dependencies of a PyPI project's latest release: requires_dist parsed into name, version specifier, extras and environment markers; requires_python; license; and the list of optional extras. One-hop Python supply-chain view. $0.01 per project.

All released versions of a PyPI project with release dates (from the first file upload of each release), yanked flags, total count, first/latest release dates, releases in the last 90 days and the 30 most recent. Python release-cadence helper. $0.01 per project.

Regex tester: runs a JavaScript regular expression (pattern or /pattern/flags) against your text with the global flag, returning every match with index, the capture groups and named groups, the match count, and a 2-second timeout guard against catastrophic patterns. Text is not stored. $0.01 per test.

IETF RFC lookup by number: title, authors, publication date, status (Internet Standard, Proposed Standard, Informational...), page count, obsoletes/obsoleted-by/updates relations, keywords, abstract, and links to the HTML/text versions. Protocol-spec navigation for engineering agents. $0.01 per RFC.