Choose your agent
Follow the setup guide for Claude Code, Codex, OpenCode, Copilot CLI, Gemini CLI, and other supported tools.
Customize feedback
Change the message Plannotator sends after plan review, document annotation, or code review.
Add external annotations
Send findings from linters, scripts, and other local tools into an open Plannotator session.
Run from hooks
Call Plannotator from an agent or editor hook and return plain text or structured JSON.
Choose the right guide
Plannotator’s local API has no authentication. Keep it on your computer or behind trusted port forwarding. Start with external annotations when another tool only needs to add findings to the current session.
Last verified against Plannotator OSS v0.23.1 on July 18, 2026. Maintained by the Plannotator project.