Free Beta · macOS 15.6+

Your APIs. Your AI. Your rules.

The first API client with an embedded MCP server. Connect Claude, Cursor, or Windsurf to your API workspace — AI helps you build, test, and debug, but never sees your real data. Native macOS. End-to-end encrypted.

Download for macOSSee How MCP Works

Security First

Native Performance

300+ Beta Users

MCP Protocol

AI That Never Sees Your Real Data

RESTK's schema extraction engine strips credentials, tokens, and PII before anything reaches AI. Your AI assistant reasons about structure and types — never your actual data. Every AI interaction is logged in a full audit trail.

Your API returns:

{
  "email": "[email protected]",
  "api_key": "sk-live-abc123",
  "balance": 42850.00
}

AI sees:

{
  "email": "[email protected]",
  "api_key": "[REDACTED]",
  "balance": 12345.67
}

Schema ExtractionSynthetic DataCredential RedactionAudit TrailCollection Gating

27+ MCP Tools. Zero Configuration.

Connect Claude Code, Claude Desktop, Cursor, or Windsurf in one step. RESTK's embedded MCP server starts automatically and exposes:

Build

Create requests, collections, folders, environments

Execute

Send requests, run cURL, re-execute with overrides

Analyze

Performance analysis, error patterns, schema inference

Test

Generate test scripts, compare responses, assertions

Import

Bring in Postman, OpenAPI, Insomnia, cURL collections

Audit

Every AI action logged — who did what, when

Plus 9 MCP resources and 4 AI prompts. Works with any MCP-compatible client.

Read MCP Docs

Everything You Need From an API Client

Authentication (12 methods)

OAuth 2.0 (with PKCE), JWT, API Key, Basic, Digest, AWS SigV4, Hawk, NTLM, OAuth 1.0, Bearer, Inherited, No Auth

GraphQL

Dedicated editor with schema introspection, autocomplete, variables panel, and operation selection

Scripting & Testing (Nova Engine)

Pre/post-request JavaScript scripts. Test assertions, variable manipulation, pass/fail reporting

Environments & Variables

Multiple environments, {{variable}} substitution, hierarchical resolution, secret variables (hidden from AI)

Import From Anything

Postman, OpenAPI/Swagger, Insomnia, cURL, RESTK native — auto-detected, drag & drop

Request History

Auto-captured, searchable, restore from history, per-request timeline

Team-Ready. Enterprise-Secure.

Real-time sync with three-way merge conflict resolution. 4-tier RBAC. E2E encrypted with AES-256-GCM workspace-level keys. SQLCipher local database.

Layer	Protection
Local Storage	SQLCipher encrypted database
Sync Transport	AES-256-GCM end-to-end encryption
AI Integration	Schema extraction + credential redaction
Access Control	4-tier RBAC (Owner, Manager, Editor, Viewer)
Updates	EdDSA-signed via Sparkle

Not Electron. Not a Web App.

Built with native technologies from the ground up. Multi-tab, multi-window, Cmd+P command palette, dark/light themes. Feels like a Mac app because it is one.

Native TechnologiesMulti-TabCmd+P PaletteKeyboard-FirstSparkle Auto-Update

How RESTK Compares

Feature	RESTK	Postman	Bruno	Insomnia
Native App	Swift	Electron	Tauri	Electron
AI Integration	Embedded MCP (local)	Cloud AI	MCP Client only
Privacy	Zero real data to AI	Cloud-first
E2E Encryption	Workspace-level	Enterprise ($$$)
Audit Trail	Built-in	Enterprise only
GraphQL	Full	Full	Basic	Basic
Price	Free	$14/mo	Free	Freemium

Want a detailed breakdown? See the full comparison

Coming This Month

Runner

Execute preset collections with scheduling and results tracking

Git File Sync

Bi-directional Git sync with conflict resolution. Version control your API collections.

CLI

restk-cli for import, export, diff, and headless execution

Join the Beta — Download Free

The API client built for the AI era.

Native performance. Embedded MCP. End-to-end encrypted. Free during beta.

Download for macOSBrowse Documentation