Insomnium
github.com
Spec sheet
- What it does
- Insomnium is a local API client for testing GraphQL, REST, WebSockets, server-sent events, and gRPC.Read 9 Oct 2026 · github.com
- Intended users
- The README describes Insomnium as a tool for API testing in development and production.Read 9 Oct 2026 · github.com
- Available platforms
- desktopRead 20 Sep 2026 · github.com
- Free plan
- YesRead 20 Sep 2026 · github.com
- Authentication
- Requests can use metadata and chained authentication strategies, including Bearer, Basic, and GCP ID Token.Read 9 Oct 2026 · github.com
- Automation integration
- An optional MCP server lets MCP-aware tools list, inspect, create, update, delete, and run saved requests programmatically.Read 9 Oct 2026 · github.com
- Desktop downloads
- Downloads are offered for macOS, Windows, Ubuntu, Debian, CentOS, and Fedora; the README points Arch users to AppImage or tar.gz releases.Read 9 Oct 2026 · github.com
- Distribution
- The README documents macOS installation through Homebrew and Debian or Ubuntu installation through an APT repository.Read 9 Oct 2026 · github.com
- GraphQL support
- YesRead 20 Sep 2026 · github.com
- gRPC
- The gRPC client supports unary, server-streaming, client-streaming, and bidirectional streaming, plus .proto imports and server reflection.Read 9 Oct 2026 · github.com
- gRPC support
- YesRead 20 Sep 2026 · github.com
- MCP security
- The MCP server is disabled by default, binds to loopback, requires a Bearer token, and uses SSE over HTTP.Read 9 Oct 2026 · github.com
- Offline use
- The project says the app works 100% offline and has no cloud services, tracking, analytics, or background communication to external servers.Read 9 Oct 2026 · github.com
- Open source
- Insomnium is open source under the MIT license.Read 9 Oct 2026 · github.com
- Project origin
- Insomnium is a fork of Kong/Insomnia at version 2023.5.8, which the README describes as the last commit before compulsory account login was introduced.Read 9 Oct 2026 · github.com
- Security maintenance
- The project reports dependency security updates, Electron and native-module refreshes, application security fixes, and CI hardening.Read 9 Oct 2026 · github.com
- Source build
- The project says users can build Insomnium locally with npm run app-package.Read 9 Oct 2026 · github.com
- Support and contributions
- The maintainer welcomes issues and pull requests, and the repository provides contributing guidelines and an issue-guidelines link.Read 9 Oct 2026 · github.com
- WebSocket support
- YesRead 20 Sep 2026 · github.com
Plans and prices
Insomnium Free Open-source API client · 100% local Read 9 Oct 2026 · github.com
Where Specifiction places it
- API clients#21 of 388.2