Yaak API Client (@YaakApp) header
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Yaak API Client

@YaakApp

Offline, open source, and Git friendly API client for REST, GraphQL, WebSockets, SSE, and gRPC → by @GregorySchier 💫

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yaak.app
Joined March 2023
  • Tweets1.1K
  • Following8
  • Followers3.5K
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Photo by Yaak API Client (@YaakApp)Photo by Yaak API Client (@YaakApp)Photo by Yaak API Client (@YaakApp)Photo by Yaak API Client (@YaakApp)Photo by Yaak API Client (@YaakApp)Photo by Yaak API Client (@YaakApp)Photo by Yaak API Client (@YaakApp)Photo by Yaak API Client (@YaakApp)Photo by Yaak API Client (@YaakApp)Photo by Yaak API Client (@YaakApp)
New release (2026.1)! 🔬 Debug redirects, headers, cookies & more 🤖 MCP Server plugin for AI integrations ⌨️ Customizable keyboard shortcuts 🔀 Reorderable tabs with persistence 🎨 30+ VSCode themes 🔌 Disable any plugin
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Great work József on the documentation plugin. It looks amazing!
József Sallai (@jozsefsallaidev) profile pictureJózsef Sallai
@jozsefsallaidevOct 23
I'm happy to announce my new open-source project - yaakdoc! 🚀 At its core, yaakdoc is a tool that can take your @YaakApp workspace export and turn it into a beautiful, statically generated, and LLM-friendly API documentation site. ➡️ GitHub: github.com/jozsefsallai/yaak… ➡️ Yaak plugin: yaak.app/plugins/@yaakdoc/ya… ➡️ Demo using the default Kiseki theme: yaakdoc-demo.vercel.app yaakdoc is designed to be very modular, themable, configurable, and extensible. With tons of configuration options, ways to override and style the components and features of the site, as well as a very powerful theming system, your API documentation site can be uniquely yours. The project is still in its early stages, so if you notice any bugs, please let me know on GitHub or over here! 🙏 I'm very excited to continue developing this project and the ecosystem around it! #yaak #opensource
Image from József Sallai (@jozsefsallaidev)
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New release (2026.9) 📦 Import from Bruno 📂 Multi-file import 🧩 Better Insomnia imports
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🧩 Better Insomnia imports Insomnia variables, UUID tags, and response chaining tags now convert to native Yaak templates, and GraphQL requests keep their query, variables, and operation name instead of arriving as an unsendable body.
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Be sure to check out the full changelog! yaak.app/changelog/2026.9.0
Import Bruno Collections, ZIPs, and Batches

Import Bruno Collections, ZIPs, and Batches

Import Bruno collections, open collection folders and ZIP archives, and bring in multiple sources at once

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Yaak just crossed $5k MRR. Every feature is MIT licensed and the app runs fully offline. I wasn't sure it would work but here we are... yaak.app/blog/funding-open-s…
Funding MIT Software with Commercial-use Binaries

Funding MIT Software with Commercial-use Binaries

Yaak earns about $5k MRR from commercial licenses for its binaries. Why I chose this model, how it's working…

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New release (2026.8) 🔄 Import into existing workspaces 🧭 JSON response breadcrumbs ✨ Example gRPC messages 🔑 Custom OAuth 2.0 params 🐧 Official Arch Linux package ⚡ More responsive under load
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⚡ More responsive under load A single database writer prevents competing writes from exhausting the pool. Connections: 11 → 4 Slowest write, 30 sends: 98 → 7 ms Slowest write, 100 sends: 375 → 4 ms
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Be sure to check out the full changelog! yaak.app/changelog/2026.8.0

Import Merging, JSON Breadcrumbs, and Better Performance

Merge re-imports into the existing workspace, add custom OAuth 2.0 headers and params, authenticate with HTTP Digest, and install from the official Arch repos

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Yaak API Client retweeted
Catalin (@catalinmpit) profile picture
Catalin
@catalinmpitSep 17
I'm happy to see more and more open source alternatives popping up. Docsend → @papermarkio Postman → @YaakApp Wispr Flow → Handy Jira → @planepowers Google Analytics → @OpenPanelDev DocuSign → @documenso Notion → @appflowy Screen Studio → @cap Clerk → @hanko_io GitHub → @giteaio
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New release (2026.7) 🔗 Import from a URL 🕘 Filter history with pinning 📄 GraphQL schemas from a file 📥 New OpenAPI importer 🔌 Plugin API for reading response bodies
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📥 New OpenAPI importer OpenAPI 3.x and Swagger 2 documents are now parsed directly into Yaak instead of round-tripping through the Postman converter. Large schemas that used to fail on import now work, and the result matches what the spec describes:
Image from Yaak API Client (@YaakApp)
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Be sure to check out the full changelog! yaak.app/changelog/2026.7.0
URL Import, Filter History, and GraphQL Schema Files

URL Import, Filter History, and GraphQL Schema Files

Import from a URL or drag-and-drop, recall recent response filters, load GraphQL schemas from a file, and a new OpenAPI importer that handles large schemas

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