Document Validator

Validates Brazilian CPF, CNPJ and CNH documents using real check-digit calculation — proxies to a dedicated validation API for fast, accurate results.

Verra Carbon Project Registry Scraper

automation-lab/verra-carbon-project-registry-scraper

🌿 Extract normalized Verra VCS project details, status, methodology, reductions, validators, public-comment dates, participation data, and grouped documents from IDs or URLs.

Validate UBL invoices and credit notes against the official Peppol BIS Billing 3.0 and EN 16931 rules: XSD, CEN Schematron and Peppol Schematron. Returns every failed rule with its ID, message and location, plus an invoice summary.

Romania e-Factura Validator

kamerozkan/romania-efactura-validator

Preflight Romanian UBL Invoice and CreditNote XML against pinned UBL 2.1, CIUS-RO 1.0.1, and ro16931-ubl 1.0.9 rules.

JSON Schema Validator — Bulk

hipersoft/json-schema-validator

Validate JSON documents or every row of a dataset against a JSON Schema and get every failing path with a clear message. Enforce data contracts and QA scraped data.

Data Format Converter - CSV, JSON, XML Transformation

ntriqpro/data-format-converter

Convert data between CSV, JSON, XML, Excel, YAML and TSV at scale — no manual reformatting. Control delimiters and encoding, validate against a schema, and run whole batches of files in one pass. Built for ETL jobs, data migration and developer pipelines.

JSON Schema Validator & Generator — Infer, Validate & Document

perryay/json-schema-validator-generator

Infer JSON Schema from sample JSON data and validate JSON documents against existing schemas. Supports Draft-04, Draft-07, and 2019-09. Features nested objects, array item type inference, enum detection, batch validation, and human-readable schema documentation generation.

Compare two OpenAPI 3.0/3.1 specs (JSON or YAML) and emit per-endpoint / per-operation / per-schema change rows with a `breaking` flag. Pairs with the api-response-delta-monitor.

Validate an inline or public HTTPS ARD catalog and return stable repair-grade JSON diagnostics for coding agents.

XML Sitemap Health Validator

maximedupre/sitemap-validator

Validate XML sitemaps and sitemap indexes. Check listed URLs for HTTP status, redirects, response time, errors, and sitemap metadata.