Insomnia

Insomnia is the lightweight alternative to Postman. v9.0+ focuses on Local-First philosophy (Local Vault) and Git Sync.

When to Use

• Privacy: "Local Vault" ensures your API keys never touch the cloud.
• GraphQL: One of the best GraphQL clients with schema fetching and auto-complete.
• Simplicity: Cleaner UI than Postman.

Core Concepts

Design Documents (OpenAPI)

Write YAML config and generate code/tests.

Git Sync

Sync your collections to a Git repo (not a proprietary cloud).

Plugins

Community plugins for authentication and themes.

Best Practices (2025)

Do:

• Use Git Sync: Treat your API collection as code.
• Use Environment Variables: Switch contexts easily.

Don't:

• Don't ignore the CLI: inso is the CLI tool for running tests in pipelines.

References

• Insomnia Documentation