API Network Recorder by Fernando
Capture authorized API requests and responses for debugging, documentation, and API analysis.
Extension Metadata
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About this extension
API Network Recorder is a developer tool for capturing, inspecting, filtering, and exporting API/network traffic directly from Firefox.
Use it to debug API integrations, inspect request and response data, document observed endpoints, and generate exportable API references from real browser traffic.
Features:
Firefox uses silent network capture through webRequest. Response bodies may be unavailable when the browser does not expose them through standard extension APIs.
Captured data is stored locally in the browser and is not uploaded to an external server by this extension.
Use it to debug API integrations, inspect request and response data, document observed endpoints, and generate exportable API references from real browser traffic.
Features:
- Capture API-like network requests from web pages.
- Inspect request URLs, HTTP methods, status codes, request headers, request bodies, response headers, and response metadata.
- Filter captured records by search text, HTTP method, status group, source, host, and API-only mode.
- Group captured traffic by endpoint.
- Export captured records as JSON.
- Export grouped endpoints as Markdown documentation.
- Export an OpenAPI draft based on observed traffic.
- Pause and continue live updates in the inspector.
- Store captured records locally in the browser.
Firefox uses silent network capture through webRequest. Response bodies may be unavailable when the browser does not expose them through standard extension APIs.
Captured data is stored locally in the browser and is not uploaded to an external server by this extension.
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Permissions and data
Required permissions:
- Access browser tabs
- Access your data for all web sites
Optional permissions:
- Access your data for all web sites
Required data collection, according to the developer:
- Browsing activity
- Web site content
More information
- Add-on Links
- Version
- 0.1.6
- Size
- 92.05 kB
- Last updated
- 2 days ago (22 May 2026)
- Related Categories
- Licence
- All Rights Reserved
- Privacy Policy
- Read the privacy policy for this add-on
- Version History
- Add to collection
The extension captures request and response metadata from the active browsing session and lets users review endpoints, headers, request bodies, response data, status codes, timing, and source information. Users can export captured data as JSON, Markdown, or an OpenAPI draft.
The extension does not upload captured traffic to any external server. Captured data is processed locally in the browser and exported only when the user manually chooses to do so.
This add-on is intended for debugging API integrations, documenting endpoints, reviewing request/response payloads, and troubleshooting web applications.