# OpenAPI Companion > A browser extension that turns OpenAPI/Swagger docs into a persistent, productivity-focused API testing workspace. Canonical page: [https://chrome-stats.com/d/openapi-companion](https://chrome-stats.com/d/openapi-companion) ## Overview - **ID:** `openapi-companion` - **Platform:** Firefox - **Type:** Firefox add-on - **Status:** Available - **Publisher:** pratyanj - **Category:** web-development,privacy-security,search-tools - **Daily users:** 1 - **Weekly downloads:** 1 - **Version:** 1.1.3 - **Last updated:** 2026-09-05 - **First published:** 2026-09-02 - **Size:** 201 KB - **Data as of:** 2026-09-09 - **Store listing:** [Firefox Add-ons Store](https://addons.mozilla.org/firefox/addon/openapi-companion/) - **Privacy policy:** [https://addons.mozilla.org/firefox/addon/openapi-companion/privacy/](https://addons.mozilla.org/firefox/addon/openapi-companion/privacy/) ## Description A browser extension that turns OpenAPI/Swagger docs into a persistent, productivity-focused API testing workspace. Turn Swagger UI into a persistent, productivity-focused API testing workspace — completely offline and private. Tired of re-entering authentication tokens after every page refresh, manually crafting test JSON payloads, or losing request parameters? OpenAPI Companion integrates into Swagger UI via Chrome's native Side Panel, giving you a persistent workspace directly inside your API documentation. ───────────────────────────────────────── CORE FEATURES ─────────────────────────────────────────
  1. PERSISTENT AUTHENTICATION • Retain authorization across page reloads without re-entering credentials. • Supports Bearer tokens, JSON Web Tokens, API Keys, and Basic Authentication. • Optional automatic token refresh to keep sessions active while testing. • Easily switch between different saved test accounts in a single click.
  2. REQUEST PRESETS & TEMPLATES • Save frequently used request bodies, query parameters, and headers as named presets. • Insert saved payloads directly into the active endpoint form with one click. • Organize presets with tags and custom notes.
  3. MOCK DATA & DATASET STUDIO • Over 60 realistic built-in generators for names, emails, addresses, coordinates, test cards, dates, and identifiers. • Schema-Aware Synthesis: Automatically generates request bodies matching your endpoint's schema across four modes:
  4. Realistic: Production-like sample data.
  5. Minimal: Generates only required fields.
  6. Boundary: Tests maximum, minimum, and edge-case values.
  7. QA & Security: Tests input handling with injection patterns and special character sets. • Bulk Dataset Generator: Create multi-row test datasets and export them directly as JSON or CSV files. • Live Fill: Auto-detects input fields in the open endpoint and fills empty parameters instantly.
  8. REQUEST HISTORY & INSPECTION • Automatically records executed API calls with timestamps, status codes, response durations, and payloads. • Search and filter past calls by status code to review or replay earlier requests.
  9. QUICK NAVIGATION & COMMAND PALETTE • Press Ctrl+K (or Cmd+K on Mac) to search all endpoints instantly by path or summary. • Jump directly to any endpoint on the documentation page without manual scrolling. • Bookmark important endpoints for quick access.
  10. CODE SNIPPET EXPORT • Convert any endpoint or historical request into ready-to-use client code snippets with a single click.
───────────────────────────────────────── PRIVACY & SECURITY ───────────────────────────────────────── • 100% Local: All credentials, history, and presets are stored strictly on your local machine. • No External Tracking: The extension does not connect to external servers or transmit telemetry. • Non-Intrusive: Functions alongside your existing documentation without modifying backend services. ───────────────────────────────────────── HOW TO GET STARTED ───────────────────────────────────────── 1. Install OpenAPI Companion. 2. Navigate to any Swagger UI or OpenAPI documentation page. 3. Press Ctrl+Shift+O (or Cmd+Shift+O on Mac) or click the extension icon to open the side panel. 4. Test and manage your API requests seamlessly. ## Rankings - #107,698 — Overall - #18 — openai gpt ## Permissions and access ### Permissions - `storage` - `activeTab` - `unlimitedStorage` - `contextMenus` ### Host permissions - `http://*/*` - `https://*/*` ### Content script matches - `*` ## Safety - **Risk impact:** Moderate risk impact - **Risk likelihood:** High risk likelihood ### Analysis details - Allows access to all websites, posing a significant security risk as it can monitor and modify data from any visited site. - This extension was recently updated in the past month. New updates may not be stable or safe. > Some risk analysis details are omitted from this free response. [Upgrade to view the full analysis](https://chrome-stats.com/pricing). ## Similar extensions and apps - [OpenAI API Tester](https://chrome-stats.com/d/openai-api-tester) — 1 users - [developers to explore](https://chrome-stats.com/d/developers-to-explore) - [developers to explore](https://chrome-stats.com/d/swaggerinspector) - [APIlot](https://chrome-stats.com/d/apilot) - [Swagger Auto Auth Saver](https://chrome-stats.com/d/swagger-auto-auth-saver) — 1 users - [ZeroWebTools Companion](https://chrome-stats.com/d/zerowebtools-dev) — 1 users - [Open Headers](https://chrome-stats.com/d/open-headers-backup) — 4 users - [API Request Tester](https://chrome-stats.com/d/api-request-tester) — 170 users, 1.00 / 5 - [zapi](https://chrome-stats.com/d/zapi) — 19 users, 5.00 / 5 - [Open Headers](https://chrome-stats.com/d/open-headers) — 3 users, 5.00 / 5 - [SwaggerAuthenticator](https://chrome-stats.com/d/swaggerauthenticator) — 21 users, 5.00 / 5 - [Arcane Scout — API Pentesting](https://chrome-stats.com/d/arcane-scout) — 6 users, 5.00 / 5 --- Source: [Chrome-Stats](https://chrome-stats.com/d/openapi-companion)