Annotate plans. Not in the terminal.
Interactive Plan Review for OpenCode. Select the exact parts of the plan you want to change—mark for deletion, add a comment, or suggest a replacement. Feedback flows back to your agent automatically.
Obsidian users can auto-save approved plans to Obsidian as well. See details
Watch Demo
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Add to your opencode.json:
{
"$schema": "https://opencode.ai/config.json",
"plugin": ["@plannotator/opencode@latest"]
}Restart OpenCode. By default, the submit_plan tool is available to OpenCode's plan agent, not to build or other primary agents.
Slash commands: Run the install script to get
/plannotator-review,/plannotator-annotate, and/plannotator-last:curl -fsSL https://plannotator.ai/install.sh | bashThis also clears any cached plugin versions.
Plannotator supports three OpenCode workflows:
plan-agent(default):submit_planis available to configured planning agents only. This keeps Plannotator integrated with OpenCode plan mode without nudgingbuildto call it.manual:submit_planis not registered. Use/plannotator-last,/plannotator-annotate,/plannotator-review, and/plannotator-archivewhen you want Plannotator.all-agents: legacy broad behavior. Primary agents can see and callsubmit_plan.
Default config:
{
"$schema": "https://opencode.ai/config.json",
"plugin": [
["@plannotator/opencode@latest", {
"workflow": "plan-agent",
"planningAgents": ["plan"]
}]
]
}Restore the old broad behavior:
{
"$schema": "https://opencode.ai/config.json",
"plugin": [
["@plannotator/opencode@latest", {
"workflow": "all-agents"
}]
]
}Use commands only:
{
"$schema": "https://opencode.ai/config.json",
"plugin": [
["@plannotator/opencode@latest", {
"workflow": "manual"
}]
]
}- The configured planning agent calls
submit_plan→ Plannotator opens in your browser - Select text → annotate (delete, replace, comment)
- Approve → Agent proceeds with implementation
- Request changes → Annotations sent back as structured feedback
- Visual annotations: Select text, choose an action, see feedback in the sidebar
- Runs locally: No network requests. Plans never leave your machine.
- Private sharing: Plans and annotations compress into the URL itself—share a link, no accounts or backend required
- Plan Diff: See what changed when the agent revises a plan after feedback
- Annotate last message: Run
/plannotator-lastto annotate the agent's most recent response - Annotate files, folders, and URLs: Run
/plannotator-annotatewhen you want manual review of an artifact - Obsidian integration: Auto-save approved plans to your vault with frontmatter and tags
| Variable | Description |
|---|---|
PLANNOTATOR_REMOTE |
Set to 1 / true for remote mode, 0 / false for local mode, or leave unset for SSH auto-detection. Uses a fixed port in remote mode; browser-opening behavior depends on the environment. |
PLANNOTATOR_PORT |
Fixed port to use. Default: random locally, 19432 for remote sessions. |
PLANNOTATOR_BROWSER |
Custom browser to open plans in. macOS: app name or path. Linux/Windows: executable path. |
PLANNOTATOR_SHARE_URL |
Custom share portal URL for self-hosting. Default: https://share.plannotator.ai. |
PLANNOTATOR_PLAN_TIMEOUT_SECONDS |
Timeout for submit_plan review wait. Default: 345600 (96h). Set 0 to disable timeout. |
Works in containerized environments. Set the env vars and forward the port:
{
"containerEnv": {
"PLANNOTATOR_REMOTE": "1",
"PLANNOTATOR_PORT": "9999"
},
"forwardPorts": [9999]
}If nothing opens automatically, open http://localhost:9999 when submit_plan is called.
See devcontainer.md for full setup details.
Save approved plans directly to your Obsidian vault.
- Open Settings in Plannotator UI
- Enable "Obsidian Integration" and select your vault
- Approved plans save automatically with:
- Human-readable filenames:
Title - Jan 2, 2026 2-30pm.md - YAML frontmatter (
created,source,tags) - Auto-extracted tags from plan title and code languages
- Backlink to
[[Plannotator Plans]]for graph view
- Human-readable filenames:
Copyright 2025 backnotprop Licensed under MIT or Apache-2.0.