Plannotator

Plannotator is a local, browser-based review surface for AI coding agents: Claude Code, Codex, Copilot CLI, Gemini CLI, OpenCode, Kiro, Droid, Amp, and Pi.

It plugs directly into your agent through its hooks and commands. When the agent proposes a plan, html, or finishes writing code, the work opens in your browser and you mark it up, comment, and send feedback directly to the agent for it to act on it.

Review documents, plans, and agent messages

Annotate plans, specs, messages, html, then send the feedback to your agent.

Code Review

Review local changes or remote PRs. Comment on diffs, suggest code. Your comments go back to the agent. Works with Git, GitButler, Jujutsu (jj), Perforce (p4), GitHub, and GitLab.

Annotate HTML Artifacts

Commands

On Codex, swap the slash commands for !plannotator … (e.g. !plannotator review) or the $plannotator-* skills.

Annotate

/plannotator-annotate README.md                  # Local markdown file
/plannotator-annotate src/                       # Browse and annotate files in a folder
/plannotator-annotate https://docs.rs/…          # Fetch and annotate any URL
/plannotator-annotate report.html --render-html  # Render HTML as-is instead of converting
/plannotator-last                                # Annotate the agent's last message

Need a realistic document to try? Copy the product requirements document template and filled example as Markdown.

Code review

/plannotator-review                    # Review uncommitted changes
/plannotator-review <github-pr-url>    # Review a GitHub pull request
/plannotator-review <gitlab-mr-url>    # Review a GitLab merge request
plannotator review --gitbutler         # Review an active GitButler workspace

GitButler users can review the whole workspace, one stack, or one branch layer. See the GitButler workflow guide.

Plan mode

No command needed. Plan mode is wired in through each harness's hooks. Any time your agent creates a plan, the markdown review surface opens for you.

CLI

plannotator sessions                   # List active Plannotator sessions
plannotator sessions --open 1          # Reopen a session in the browser
plannotator archive                    # Browse saved plan decisions read-only

Privacy and network behavior

Plannotator does not collect usage telemetry or analytics. Plans, diffs, annotations, drafts, history, and configuration stay local by default.

Each plan review, annotate, archive, share-portal, and code-review app surface checks GitHub for the latest Plannotator release when it loads. This sends no plan or review content and gives the Plannotator project owner no usage analytics, although GitHub receives an ordinary request. There is currently no opt-out setting. Local Git code review can also query the configured origin with git ls-remote to detect the default branch and a stale baseline; it does not send the local diff.

Content leaves the local workflow only when a network feature needs it:

• URL annotation fetches the requested site, through Jina Reader by default for public pages or directly when Jina is disabled or unavailable.
• GitHub and GitLab review uses your authenticated CLI and Git remote to retrieve PR or MR data.
• Ask AI and review agents send the selected question and relevant plan, document, repository, or diff context to your configured provider.
• Sharing sends the complete link to whoever or whatever service you use to deliver it. Encrypted short links upload ciphertext to the paste service.
• Workspaces is a separate hosted product, so the open source app's local-storage model does not apply to content placed there.

The privacy policy documents these boundaries and the hosted website and waitlist data.

Link sharing

Open source asynchronous link sharing remains available for compatibility but is moving to deprecated support. Workspaces is the primary direction for team sharing. No removal date has been announced.

Share a plan with a teammate and they can annotate it themselves. Import their feedback and send it straight back to your agent.

Small markdown shares are compressed into the URL fragment. The fragment is not included in the browser's request to the share portal, but it is not encrypted. Anyone or any messaging service with the complete link can read the shared content. The portal host still receives ordinary request metadata.

Large markdown and raw HTML shares use a short-link service. The share payload is encrypted with AES-256-GCM before upload, the server stores only ciphertext, and the key is kept in the URL fragment rather than sent in the paste request. Anyone with the complete link can decrypt it. Hosted pastes expire after 7 days.

Same model as PrivateBin. The paste service is self-hostable.

Sharing can be disabled entirely with PLANNOTATOR_SHARE=disabled.

Workspaces is the primary path for hosted team collaboration.

Install

One installer covers almost every agent. It installs the plannotator binary, auto-detects your installed agents, and configures hooks, skills, and slash commands for each:

# macOS / Linux / WSL
curl -fsSL https://plannotator.ai/install.sh | bash

# Windows PowerShell
irm https://plannotator.ai/install.ps1 | iex

The installer downloads the binary from GitHub Releases. A full install can also contact GitHub for release resolution and agent files, Ataraxy-Labs/sem for the optional sem sidecar, and npm for Pi, selected extra skills, or the managed agent-terminal runtime. Pinning --version skips only GitHub API release resolution, not the release download. See the privacy policy for the complete network boundaries.

Want just the binary and nothing else? Pass --minimal (or export PLANNOTATOR_MINIMAL=1) to install only the plannotator binary to ~/.local/bin, skipping every skill, hook, slash command, and per-agent config:

curl -fsSL https://plannotator.ai/install.sh | bash -s -- --minimal

Then finish the step for your agent: