The native REST client for Windows
Build, send and debug HTTP requests without an account and without Electron. Your data stays on your PC.
Get it from the Microsoft StoreFree. No telemetry. Windows 10 (1809) or later, x64 and ARM64.
Complete requests
Any method, query params synced with the URL, headers, JSON/XML bodies, forms and file uploads.
Collections and environments
Folders, history and {{baseUrl}} variables with environments, globals and dynamic variables.
Safe secrets
Variables marked secret are stored in Windows Credential Manager, never in your workspace files.
Auth
Basic, Bearer, API key and OAuth 2.0 client credentials with a token cache.
Network diagnostics
IPv4/IPv6 Happy Eyeballs, every address tried and why it failed, and a built-in connectivity check.
Built-in MCP server
Let AI assistants (Claude, VS Code, Cursor) use your collections. Secrets are never shown to the AI.
Import and generate code
Paste a cURL command or import Postman collections. Generate cURL, PowerShell, C#, Python and JavaScript.
Readable responses
Syntax colors (4 schemes), search, headers, cookies and timings.
Set up the MCP server
When installed from the Store, ultimaterest-mcp is on your PATH. Add it to your MCP client:
{ "mcpServers": { "ultimaterest": { "command": "ultimaterest-mcp", "args": [] } } }