Dev Embers

Settings

Keyboard Shortcuts

Action macOS Windows/Linux
Open Rex Cmd+Shift+R Ctrl+Shift+R
Send request Cmd+Enter Ctrl+Enter
Save request Cmd+S Ctrl+S

VS Code Commands

Rex registers two commands in the Command Palette (Cmd+Shift+P):

Command Description
Rex: Open API Client Open or reveal the main API client panel
Rex: New Request Tab Create a new request tab

Import

Rex can import requests from multiple formats. Open the import dialog and either paste content or upload a file — Rex auto-detects the format.

Format Details
Postman Collection v2.1 format with full request, auth, and body support
OpenAPI / Swagger OpenAPI 3.x and Swagger 2.0 (JSON & YAML)
HAR HTTP Archive 1.2 format
cURL Paste a cURL command directly into the URL bar

Export

Export your data in multiple formats:

Format Scope
Postman Collection Any collection
HAR 1.2 Any collection or full history
cURL Individual request
JSON Individual request

Code Generation

Generate working code snippets from any request. Click the code generation button in the response panel toolbar.

Supported Languages

Language Libraries
JavaScript Node.js http
Python requests
Shell cURL

Generated snippets include authentication, headers, and body configuration. Copy to clipboard with one click.

API Documentation Viewer

Load an OpenAPI 3.x or Swagger 2.0 spec (from a file or URL) to browse API documentation inside Rex:

  • Endpoints organized by tag with search
  • Parameters, request body, and response schemas for each endpoint
  • Security requirements
  • Try it button pre-fills the request builder with the endpoint details

Storage

All Rex data is stored locally via VS Code’s extension globalState:

Data Storage
Collections Saved request collections
Environments Environment variable sets
Chains Request chain definitions
History Request history (capped at 50KB per response body)
Tabs Active tab state and request configuration

Data persists across VS Code sessions and survives window reloads.

Privacy

  • All data stored locally in VS Code’s globalState
  • No external API calls except to endpoints you specify
  • No telemetry, analytics, or tracking
  • No account system or cloud storage