> ## Documentation Index
> Fetch the complete documentation index at: https://docs.gc.ai/llms.txt
> Use this file to discover all available pages before exploring further.
# Update playbook
> Update a playbook you can write to.
**Tool** `update_playbook` ยท **Behavior** Destructive
Update a playbook you can write to. Only the fields you pass change. Pass `checks` to replace the whole check set (read it first, edit, send it back); omit `checks` to leave them. Returns the playbook and its checks.
## Input parameters
Playbook to update. You must have write access.
New title (non-empty).
New description, or null to clear it.
New guide text, or null to clear it.
Full desired set of checks, in order (max 100). Replaces the current checks: entries with a matching `id` are updated, new entries are created, and omitted checks are removed. Omit `checks` entirely to leave them unchanged.
Check title (required).
Optional internal description.
Optional priority within the playbook.
The check's positions: exactly one `standard` plus any `fallback`s.
`standard` for the primary stance, `fallback` for an alternative.
What to require, accept, or flag for this position.
Existing check id to update in place. Omit to create a new check.
## Response