#6161st of 85 in Skills, plugins and rules

plannotator

Browser UI to annotate agent plans and review diffs, then send feedback back

Live demo ↗ Documentation ↗ Website ↗ Repository on GitHub ↗

Stars: 9.3k
License: Apache-2.0
Last commit: Oct 2026
Last release: Oct 2026
Language: TypeScript

Missed the latest GitHub check; these facts may be older.

Overview

Plannotator hooks into coding agents (Claude Code, Codex, Copilot CLI, Gemini CLI, OpenCode, Kiro, Droid, Amp, Pi) and opens their plans, markdown, HTML and diffs in a local browser UI. You annotate, approve or deny, and the structured feedback goes back to the agent. Code review covers local changes and GitHub/GitLab PRs, with Git, GitButler, jj and Perforce support.

Who it is for: Developers using CLI coding agents who want to review plans and diffs visually

Strengths

Covers nine agents through hooks, plugins or skills; one installer auto-detects and configures them
Reviews local diffs and GitHub/GitLab PRs; supports Git, GitButler, jj and Perforce
No usage telemetry; plans, diffs and annotations stay local by default
Plan mode opens the review UI automatically via ExitPlanMode and equivalent hooks

Weaknesses

Release check against GitHub on each page load has no opt-out setting
Droid integration is commands only, with no plan interception
Link sharing is moving to deprecated support; team sharing is a hosted Workspaces product
Setup differs per agent, with manual steps for Amp, Claude Code, Copilot and OpenCode

What it needs

no GPU
Needs A supported coding agent CLI, Git, GitHub CLI or GitLab CLI for PR review

Also in Skills, plugins and rules

See all 85

Also in Skills, plugins and rules
Rank	Project	Score
1	skillsAgent skills for planning, TDD, debugging and code review291.3k starsMIT	94 out of 100
2	eccAgents, skills, hooks and rules bundle for Claude Code, Codex and other harnesses279.5k starsMIT	94 out of 100
3	cavemanCuts token use in coding agents with terse replies and compressed inputs Live demo ↗ (opens in a new tab)111.9k starsApache-2.0	94 out of 100
#4	ponytailSkill prompt that makes coding agents write less code and add tests163.6k starsMIT	92 out of 100
#5	impeccableDesign skill with 24 commands and a detector for AI-generated frontends Live demo ↗ (opens in a new tab)81.2k starsApache-2.0	92 out of 100

How to choose

Check which agent it targets and whether it works with the version you run.
Read what it adds to every prompt; big rule sets cost tokens on each call.
Prefer add-ons you can turn off per project.

Health

Releases: Not checked
Top contributor: Not checked
Security advisories: Not checked
Package advisories: Not checked
OpenSSF Scorecard: Not checked

Not read for this project yet: each refresh reads the facts of a few projects. Bots and coding-agent accounts are left out of the commit counts. Not part of the score: how we check.

License in plain words

Apache-2.0 Permissive

Use it at work: Yes
Change it and rebrand it: Yes
Sell it or host it for others: Yes

Your part: Keep the notices and mark the files you change. It also grants you the contributors’ patent rights.

A plain summary, not legal advice. Read the license on GitHub ↗ (opens in a new tab)

#61 of 85 in Skills, plugins and rules on Archestack, as of 15 Oct 2026.

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Best of Vibe Coding on GitHub

Each review comes from the project's README and facts we check on GitHub. The fix form opens with plannotator filled in.