Development x402 offerings

Diff From Before and After: A Patch That Applies Exactly — Writes the unified diff (the patch format of git diff and diff -u) that turns an old version of a text file into a new one, so that git apply or patch applies it to the old version with no fuzz and produces the new version byte for byte. Compares line by line with every space, tab, carriage return and final line break counting, writes each hunk with three lines of context, merges hunks whose context touches, counts the numbers in every …

Base-image due diligence from the Docker Hub API v2: repository status, star and pull counts, last_updated with derived days_since_update, and the 10 most recently pushed tags with push date and size. Query: ?repo=nginx&namespace=library (namespace defaults to library for official images). Lets CI/CD agents avoid building on stale or abandoned images; cached 1h.

Version-delta changelog for a library between two versions. Give an ecosystem, package name and from_version and to_version and get the GitHub release notes in that range, the registry versions between them, and surfaced breaking-change markers. Built for agents deciding whether an upgrade is safe.

Up-to-date, version-pinned documentation for a library or API, for coding agents. Give an ecosystem and a package name (optional version and topic) and get a compact doc slice: package identity (latest and requested version, license, repo, homepage and doc URLs, version list) plus the README or llms.txt section matching the topic, each with a provenance citation. Keyless PyPI, npm, crates and GitHub sources.

Working code snippets for a library, matched to a topic. Give an ecosystem, package name and a topic or symbol and get the fenced code blocks from the README or docs whose language, code or nearest heading matches, each with a source citation and an honest truncated flag. Ideal for grounding a coding agent in real usage examples.

Working code snippets for a library, matched to a topic. Give an ecosystem, package name and a topic or symbol and get the fenced code blocks from the README or docs whose language, code or nearest heading matches, each with a source citation and an honest truncated flag. Ideal for grounding a coding agent in real usage examples.

Bulk does site use astro: up to 20 domains in one call, processed concurrently, results in input order with a per-item error field and a failure count. Same answer per item as the single endpoint. Batch enrichment for agents that hold a list. $0.10 per batch.

Bulk does site use bootstrap: up to 20 domains in one call, processed concurrently, results in input order with a per-item error field and a failure count. Same answer per item as the single endpoint. Batch enrichment for agents that hold a list. $0.10 per batch.

Does a website use D3.js? Fetches the page (homepage for a bare domain) and matches D3.js's fingerprints in the HTML and response headers, returning yes/no with the evidence snippet and the category (library). Technographics for sales, competitor research and migration planning, one technology per call. $0.01 per check.

Does a website use Day.js? Fetches the page (homepage for a bare domain) and matches Day.js's fingerprints in the HTML and response headers, returning yes/no with the evidence snippet and the category (library). Technographics for sales, competitor research and migration planning, one technology per call. $0.01 per check.

Does a website use Ember.js? Fetches the page (homepage for a bare domain) and matches Ember.js's fingerprints in the HTML and response headers, returning yes/no with the evidence snippet and the category (framework). Technographics for sales, competitor research and migration planning, one technology per call. $0.01 per check.

Bulk does site use ember: up to 20 domains in one call, processed concurrently, results in input order with a per-item error field and a failure count. Same answer per item as the single endpoint. Batch enrichment for agents that hold a list. $0.10 per batch.

Does a website use htmx? Fetches the page (homepage for a bare domain) and matches htmx's fingerprints in the HTML and response headers, returning yes/no with the evidence snippet and the category (framework). Technographics for sales, competitor research and migration planning, one technology per call. $0.01 per check.

Bulk does site use jquery: up to 20 domains in one call, processed concurrently, results in input order with a per-item error field and a failure count. Same answer per item as the single endpoint. Batch enrichment for agents that hold a list. $0.10 per batch.

Bulk does site use jquery ui: up to 20 domains in one call, processed concurrently, results in input order with a per-item error field and a failure count. Same answer per item as the single endpoint. Batch enrichment for agents that hold a list. $0.10 per batch.

Change watch for does site use lodash: 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.

Bulk does site use nextjs: up to 20 domains in one call, processed concurrently, results in input order with a per-item error field and a failure count. Same answer per item as the single endpoint. Batch enrichment for agents that hold a list. $0.10 per batch.

Bulk does site use react: up to 20 domains in one call, processed concurrently, results in input order with a per-item error field and a failure count. Same answer per item as the single endpoint. Batch enrichment for agents that hold a list. $0.10 per batch.

Does a website use Remix? Fetches the page (homepage for a bare domain) and matches Remix's fingerprints in the HTML and response headers, returning yes/no with the evidence snippet and the category (framework). Technographics for sales, competitor research and migration planning, one technology per call. $0.01 per check.

Bulk does site use sveltekit: up to 20 domains in one call, processed concurrently, results in input order with a per-item error field and a failure count. Same answer per item as the single endpoint. Batch enrichment for agents that hold a list. $0.10 per batch.

Bulk does site use tailwind: up to 20 domains in one call, processed concurrently, results in input order with a per-item error field and a failure count. Same answer per item as the single endpoint. Batch enrichment for agents that hold a list. $0.10 per batch.

Change watch for does site use tailwind: 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.

Bulk does site use vue: up to 20 domains in one call, processed concurrently, results in input order with a per-item error field and a failure count. Same answer per item as the single endpoint. Batch enrichment for agents that hold a list. $0.10 per batch.

DraftCheck: flags AI-writing patterns in prose with fix hints. Deterministic linter, not a detector.