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OpenAPI & Swagger Validator and Endpoint Extractor

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Validate inline OpenAPI 3.0, 3.1 and Swagger 2.0 JSON specifications and extract endpoint inventories without fetching external references.

Pricing

from $2.00 / 1,000 specification validateds

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asaf meizner

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Phone Number Validation API — Carrier & Location Lookup

vivid_astronaut/phone-validation

Validate phone numbers worldwide and return carrier, line type, and location data as structured JSON. Use it to clean contact lists, block invalid signups, and route SMS traffic reliably.

BRAINIALL Team

API & Endpoint Discovery

lofomachines/api-endpoint-discovery

Discover, test, and fingerprint all API endpoints from any website. Supports bulk input, OpenAPI/Swagger parsing, GraphQL introspection, and deep auth/CORS/rate-limit detection. Use as a Claude MCP tool via Apify.

Lofomachines

EU VAT Number Validator API

andok/eu-vat-validator

Validate EU VAT numbers in bulk against the official VIES database. Extract company name, address & VAT status. Pay per validation, no subscription.

Andok

UCP Profile Validator

regdata/ucp-profile-validator

Validate any merchant's Universal Commerce Protocol (UCP) business profile at /.well-known/ucp. Check AI commerce readiness with instant A-F grading, detailed issue reports, and fix recommendations. Essential for e-commerce stores preparing for AI shopping agents.

getregdata

5.0

(1)

Mcp Validator

rocketagro/mcp-validator

**MCP Validator** is a professional validation and compliance testing tool for [Model Context Protocol (MCP)](https://modelcontextprotocol.io) servers. It ensures your MCP server’s **tools, resources, prompts, and templates** are correct, compliant, and production-ready.

Jahid Hasan

Third-Party OpenAPI Change Monitor

monema/third-party-openapi-change-monitor

Monitor public OpenAPI and Swagger specifications for structural changes. Get persistent baselines plus review-oriented records for removed operations, new required inputs, response/schema changes, and additive updates.

Maarten Vreeburg

OpenAPI Spec Drift Detector

stellar_ballet_0bu/openapi-spec-drift-detector

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.

Nikita S

Schema.org Markup Validator

scrappy_garden/schema-org-markup-validator

Validate Schema.org structured data for SEO. Parses JSON-LD, detects Microdata and RDFa, highlights schema types, and reports common issues like invalid JSON-LD, missing @type, non-schema.org @context, and missing key properties for popular schema types.

Bikram Adhikari

OpenAPI Quality Auditor API

merlin-hermes/openapi-quality-auditor-api

Deterministically audits supplied OpenAPI or Swagger text for endpoint inventory, documentation gaps, security-declaration coverage, and mutating-operation flags without calling any described API operation.