Yaak – The API client you'll truly enjoy

Founded by Greg in 2024

Test and organize REST, GraphQL, and gRPC requests locally using Git version control

Pricing model

Free Trial

Rating

★ People love it

Time to value

Quick Setup (< 1 hour)

You can use Yaak to send and test HTTP, GraphQL, WebSocket, gRPC, and Server-Sent Events requests directly from your desktop. It stores your workspaces locally as plain YAML files, letting you manage and sync collections with Git instead of relying on external cloud databases. You can chain requests, pass dynamic values across calls, and organize environments without scripting. Yaak also features an agent-friendly command line interface and Model Context Protocol support, allowing coding assistants like Claude or Cursor to inspect and run API requests automatically.

What Yaak – The API client you'll truly enjoy does

Send HTTP, GraphQL, and gRPC requests directly to test serversCommit workspace changes and API collections directly to GitImport existing API collections from Postman, Insomnia, or OpenAPI filesConnect AI agents to API collections using Model Context ProtocolInspect request redirects, response headers, and payload previewsChain multiple API calls by passing extracted response tokensStore API authentication keys safely within the OS keychainStores request collections locally as readable YAML filesBuilt-in Git interface for branching, diffing, and committing changesNative support for REST, GraphQL, gRPC, WebSocket, and SSE protocolsDirect integration with AI coding assistants through MCP and CLI skillsOS keychain secret encryption for managing sensitive credentialsChained requests with dynamic value passing without writing custom scriptsZero desktop telemetry and fully offline functionalityExtensible plugin system for custom authentication and template functions

Pricing breakdown

Pricing model: Free trial

PlanList price

Business (per user) (annual billing)$149 / mo, billed annually

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