Yaak is unclaimed —

Yaak

The local-first API client·yaak.app

Yaak is a desktop API client for sending HTTP, GraphQL, gRPC, WebSocket, and SSE requests. It works offline with no account required, stores all data locally, supports plain-file Git sync of workspaces, and includes a CLI built for AI agents. It is open source under the MIT license and offers encrypted secrets storage with zero telemetry.

What it's for

Send HTTP, GraphQL, gRPC, WebSocket, and SSE requestsImport existing Postman, Insomnia, OpenAPI, Swagger, or Curl collectionsSync workspaces to Git or file-sync services like Dropbox as plain-text filesAuthenticate requests using OAuth 1/2, AWS Signature v4, JWT, Basic, Bearer, API Key, NTLM, or client certificatesChain requests together and use dynamic templating with variablesDebug requests including redirects, cookies, payloads, and headersControl Yaak from the command line or connect AI agents via CLI or MCP serverEncrypt sensitive values such as secrets, passwords, and headers

Features 20

1Password vault integration for secrets
Autocomplete and request docs
Batch send requests
CLI for sending requests and managing resources, built for AI agents
Command palette
Cookie jars and cookie management
Custom proxy configuration
Encrypted secrets using ChaCha20-Poly1305 with OS keychain-stored keys
Generate fake data for testing with FakerJS
Import from Postman, Insomnia, OpenAPI, Swagger, and Curl
Local-only data storage with no cloud component
MCP Server for connecting AI assistants
Multi-window support
Multiple UI themes (Dark, Light, Rosé Pine, Catppuccin, Hotdog, and more)
OAuth 1.0/2.0, AWS Signature v4, JWT, Basic, Bearer, API Key, NTLM, and client certificate authentication
Plain-file Git sync of workspaces
Plugin directory and plugin system
Request chaining and dynamic templating with variables and functions
Rich response previews and readable streaming responses for LLM APIs
Send HTTP, GraphQL, gRPC, WebSocket, and Server-Sent Events requests

At a glance

free tierfree trialopen source

TypeDesktop app

DeploymentInstalled (local)

PlatformsmacOS, Windows, Linux

Fordevelopers, teams and businesses using APIs professionally

CompanyMountain Loop Labs

Integrations

PostmanInsomniaOpenAPISwaggerCurl1PasswordDropboxGitAWSClaude CodeMCP

Resources

Pricing

Yaak is free for personal use; a paid license is only required for commercial/work use. Licenses are billed annually only (no monthly billing). A one-time $349 lifetime Individual license is also available. Refunds available within 30 days of purchase. Each license can be used on up to 3 devices by the same person.

Individual Annual$6.58/mo · billed annually

Billed annually; licenses are billed annually only, no monthly billing option.

For one person using Yaak professionally

Individual LifetimeQuote

$349 one-time payment.

For one person using Yaak professionally

Business Annual$12.42/user/mo · billed annually

Billed annually per user; bulk purchases available via sales contact.

For teams and organizations using Yaak

Purchasing Power Parity discount for residents of countries with lower purchasing power (example shown: 40% discount for Poland). [raw type: other]