Development x402 offerings

Validate JSON (with line and column of the error), pretty-print or minify it, describe its structure (depth, keys, value types) and extract a value by path such as data.items[0].price.

Repair broken JSON, typical of LLM output: strips ```json fences, comments and surrounding text, trailing commas, single quotes, unquoted keys, Python True/None and unclosed brackets. Returns the obj…

Split long text into overlapping chunks for RAG and embeddings, by characters, words or estimated tokens, keeping sentences or paragraphs whole, with each chunk's position and size.

Generate a JSON Schema (draft 2020-12) from an example JSON: types, properties, arrays, required fields and formats (date, date-time, email, uri). For API docs, tool definitions and output validation.

Sort Semantic Versioning 2.0 versions (pre-releases included), give highest and lowest, the bump type between two, and which satisfy an npm-style range (^1.2.0, ~1.2, >=1.0 <2.0, 1.x || 2.x) plus the…

Sort Semantic Versioning 2.0 versions (pre-releases included), give highest and lowest, the bump type between two, and which satisfy an npm-style range (^1.2.0, ~1.2, >=1.0 <2.0, 1.x || 2.x) plus the…

EVM developer utilities: keccak256 hash, function selector from a signature, EIP-55 checksum address and wei/gwei/ether conversion.

Python package profile from PyPI: latest version and date, summary, license, required Python, links, dependencies, number of versions and yanked flag.

Repair broken JSON, typical of LLM output: strips ```json fences, comments and surrounding text, trailing commas, single quotes, unquoted keys, Python True/None and unclosed brackets. Returns the obj…

Test a regular expression against a text: every match with position, groups and named groups, plus the result of a substitution if you pass a replacement. Flags i, m, s, x. Time-limited, safe against…

Should you depend on this package? Version, license, deprecation (with the maintainer's reason), weekly and monthly downloads, last release date, maintainer count, npm quality/popularity/maintenance …

Every form on a page with its action, method and fields (name, type, label, required, options), so an agent knows what a page asks for before interacting. Read only: nothing is submitted. Body: {url}.

code formatter, prettier, code beautifier, JavaScript formatter, TypeScript formatter, JSON formatter, HTML formatter, CSS formatter, Markdown formatter, YAML formatter. Format code using Prettier. Supports JavaScript, TypeScript, JSON, HTML, CSS, Markdown, YAML, GraphQL. Auto-detects parser if not specified. For AI agents writing or fixing code in pipelines. Accepts payment on Base or Solana — either network works.

Search Stack Overflow questions via Stack Exchange API. Returns title, score, answer_count, is_answered, accepted_answer_id, tags, view_count, link, created_at, owner. Use ?q=YOUR_QUERY plus optional and tag=python and site=stackoverflow|serverfault|superuser and limit=10. Built for AI coding agents finding proven solutions and Q and A. Accepts payment on Base or Solana — either network works.

Search GitHub repositories by query, language, sort criteria. Returns repos with stars, forks, recent activity, language, license, topics. Use ?q=YOUR_QUERY and sort=stars and limit=10. Accepts payment on Base or Solana — either network works.

Get NPM package dependency tree with counts (runtime, dev, peer, optional) and version constraints. Use ?package=react and version=18.2.0. Built for dependency audit and bundle bloat analysis. Accepts payment on Base or Solana — either network works.

regex test, test regex, regex tester, test regular expression, regex test online, regex pattern test, regular expression test, pattern matcher, JavaScript regex test, find regex matches, regex validator, regex debugger, regex 101 alternative. Test any regex pattern against text. Returns all matches with capture groups and indices. For AI agents, pattern extraction, text validation, log parsing. Accepts payment on Base or Solana — either network works.

Text diff, text comparison, diff two strings, line diff, word diff, character diff, file diff, text patch, unified diff format, compare strings, git diff style, text difference. Compare two texts, return added/removed/unchanged segments. Line, word, or char granularity. Accepts payment on Base or Solana — either network works.

Search GitHub repositories by keyword and return full name, stars, language, short description and URL sorted by stars. github search, github repositories, find github project, popular repos, open source search Accepts payment on Base or Solana — either network works.

Audit a real response against what the OpenAPI document promises for that operation. Resolves the declared status exactly, by range such as 2XX, or through default, checks declared response headers a…

Audit a real request against the OpenAPI document it should satisfy. Matches the operation the way a router would, checks every path, query and header parameter against its declared schema, validates…

See which operations were added, removed, deprecated or renamed between two OpenAPI documents. Flags a removal that was never preceded by a deprecation, an operationId change that renames the method …

Compare two lockfiles and report what a manifest diff cannot see. Reports newly installed transitive packages, resolved version moves with breaking risk, a registry that changed, and the most serious…

Validate JSON data against a bounded JSON Schema Draft 2020-12 contract for nested objects, arrays, required properties, types, enums, formats, lengths, patterns, and numeric bounds; return determini…