# Fern Docs: API key injection

- Canonical HTML: https://growth.iangoh.com/sources/fern-docs-api-key-injection-buildwithfern-com/
- Original source: https://buildwithfern.com/learn/docs/authentication/features/api-key-injection
- Domain: buildwithfern.com
- Latest check: 2026-06-08
- Channels: Activation, API docs, Developer Tools

## Cited GrowthDex tactics

- [Fern API key injection before auth copy-paste](/growth-ideas/fern-api-key-injection-before-auth-copy-paste/) - Pre-fill playground credentials for logged-in users before forcing them through a brittle copy-paste auth ritual on the first request.

## Related reading

- [GrowthDex Blog](/blog/)
- [All growth ideas](/growth-ideas/index.md)