Nouto

An open-source REST client for VS Code. Send requests, organize collections, chain responses, and test APIs without leaving your editor.

"Nouto" is Finnish for "fetch" or "pick up."

Features

HTTP Requests

Any standard method or custom. Body types: JSON, XML, form-data, URL-encoded, binary, plain text, GraphQL. Query params, headers, and path params with autocomplete.

Authentication: Basic, Bearer, API Key, OAuth 2.0 (PKCE), AWS Signature v4, Digest, and NTLM. Auth defined at collection or folder level is inherited by child requests.

Collections

Unlimited folder nesting with drag-and-drop reordering. Collections define variables, headers, auth, and scripts that child requests inherit.

Two storage modes: global (VS Code global storage) or workspace (.nouto/ directory, one file per request for clean git diffs).

Environment Variables

{{variableName}} substitution in URLs, headers, params, and bodies. Scope resolves from request to folder to collection to global. Secrets stored in VS Code SecretStorage.

Dynamic variables: {{$uuid.v4}}, {{$timestamp.unix}}, {{$random.int, 0, 100}}. Chain responses with {{$response.body.token}}. Import from .env files with live reload.

Real-time Protocols

• WebSocket: text and binary messages, auto-reconnect, message history with search
• Server-Sent Events: live event streams with type filtering and auto-reconnect
• GraphQL subscriptions: over WebSocket (graphql-ws protocol)
• gRPC: server reflection, proto file loading, all four call types, TLS/mTLS

Testing and Automation

Pre-request and post-response JavaScript scripts with nt.sendRequest(), nt.setVariable(), and nt.test(). Scripts inherit from parent collections.

No-code assertion editor covering status codes, headers, body, JSONPath, response time, and JSON Schema. The collection runner supports iterations, CSV/JSON data files, stop-on-failure, and exports as JUnit XML, JSON, or HTML. The benchmarking tool reports percentiles (p50–p99), concurrency, and requests per second.

Response Viewer

Auto-detects content type: JSON and XML (collapsible tree), HTML (rendered), images, PDF, binary (hex dump). Extras: JSONPath filter, find, diff view, timing breakdown, redirect chain, and response examples.

Import and Export

Import from Postman, Insomnia, OpenAPI/Swagger, HAR, cURL, Hoppscotch, Thunder Client, Bruno, and Nouto native format (auto-detected). Export to Postman, HAR, and Nouto native format with full backup and restore.

Developer Tools

• Code generation: cURL, JavaScript (Fetch, Axios), TypeScript, Python, C#, Go, Java, PHP, Swift, Dart, PowerShell, Ruby
• Command palette with fuzzy search and frecency-based ranking
• Request history with search, filtering, sort, and export
• Cookie jar with multiple named jars and domain matching
• Mock server with configurable routes, response headers, and latency simulation
• Customizable keyboard shortcuts

Configuration

• SSL/TLS: custom CA, client certificates, mTLS
• Proxy: HTTP, HTTPS, SOCKS5 with authentication and per-request override
• Configurable timeouts and redirect behavior

Installation

Search for Nouto in the VS Code Extensions view, or run:

code --install-extension frostybee-dev.nouto

Desktop App

Nouto also ships as a standalone desktop app built with Tauri 2.0, running natively on Windows, macOS, and Linux.

License

MIT