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CLUSTER OPENAPI-SPECIFICATIONS-API · 9 ENTRIES · EARLIEST ENTRY 2026-09-04

OpenAPI developer tools

This cluster comprises web-based tools for working with OpenAPI specifications, covering interactive documentation generation, in-browser spec transformation, and AI-assisted API testing. The dated history is too thin to read a shape from—only one entry exists before the index start, and most members have no source date. Traction is led by cortex with 3,213 stars, while the other members show no activity signal.

Entry timeline

ENTRY TIMELINE

NOV 2022: 1AUG 2026: 5SEP 2026: 2OCT 2026: 1
NOV 2022OCT 2026

Each bar is the month a member carries, which is a creation date where the source published one and a crawl date otherwise. Nothing in the index was found before 11 August 2026, and coverage broadened sharply on 14–15 August, so a bar from then on reports how much we found that month, not how much was built; an earlier bar reports how far back a member's own source dated it — not how long we have been watching.

Members by activity

Activity signals, not revenue.

Build origin · 1 ai-built · 8 unlabelled

Operator · 1 hobby · 1 indie · 1 open source · 6 unlabelled

Two labels per entry, never collapsed into one: how it was built, and who stands behind it. Counted over the 9 listed below. Unlabelled means nothing has decided yet — not that the answer is small.

  1. 01cortex3.2k★25 daysliveMCP server that generates typed SDKs and documentation from API specifications like OpenAPI and GraphQL.
  2. 02atlas-api-explorer0★17 days—Web app that turns API documentation into an interactive dependency map for exploring entities, operations, and relationships.
  3. 03Swagger-ai0★4 days—hobbyAPI testing web app that discovers endpoints from OpenAPI docs, generates request payloads with AI, and chains authentication and CRUD calls automatically.
  4. 04schemascribe0★1 mo—indieWeb app that converts OpenAPI specifications into interactive documentation with AI-generated examples, SDK snippets, and a mock server.
  5. 05Stoplight Studio0★2 yrabandonedliveopen sourceA visual API design tool that allows users to model and document APIs without writing code, using OpenAPI specifications.
  6. 06Swagger to ChatGPT Converter0★unknownliveai-builtWeb tool that converts Swagger or OpenAPI specifications into a format usable as a ChatGPT plugin manifest.
  7. 07Type AI: Revolutionize Your AI Integration Experience0★unknownliveWeb app that lets developers build and test AI API request templates, manage clusters and schemas, and generate access keys.
  8. 08RouteLens — API Directory & Response Diff Tool0★unknownliveWeb tool that parses OpenAPI and Swagger specifications into a searchable route directory and highlights structural differences between JSON API responses.
  9. 09OpenAPI-Format Playground0★unknownliveWeb application that helps developers format, sort, filter, and transform OpenAPI documents in the browser.

Ranked by traction, highest first, and paged 20 at a time — this is a window on the cluster, never the whole of it. Ties are broken by a stable id so a product cannot appear on two pages or fall between them. Browse every cluster.