> ## Documentation Index
> Fetch the complete documentation index at: https://docs.bourneapp.ai/llms.txt
> Use this file to discover all available pages before exploring further.

# Preflight checks

> Understand preflight validation behavior and how to resolve failures quickly.

Preflight checks are designed to fail early so deployment failures are less likely.

## What preflight validates

* LLM provider authentication and model access
* Channel credential validity
* Reachability to third-party provider APIs

## Typical failure classes

* Invalid API key
* Model unavailable for your account
* Rate limits
* Invalid channel token

## Fast remediation flow

1. Read the exact failing check message.
2. Correct only that credential or model selection.
3. Re-run preflight.
4. Proceed only when all required checks pass.