plannotator-tui

A guide for sending a Markdown plan or document to a Herdr review pane, where a person can annotate it and return numbered feedback.

In plain words
What is it for?
Use it when a plan, specification, or design document needs human review. It only opens the review pane when HERDR_ENV is enabled.
Why use it?
It creates a clear review step before work begins, so changes can reflect the person's comments instead of relying on an unreviewed plan.

Skill for Claude CodeCodex

Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

agentmods
npx agentmods add skills/plannotator/herdr-annotate/plannotator-tui
Any agent
npx skills add plannotator/herdr-annotate --skill plannotator-tui
Clone the repo
git clone --depth 1 https://github.com/plannotator/herdr-annotate

Made for: Claude Code, Codex.

Per session 56 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 457 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. Scan, not verified.
Origin original No closer match found in the catalogue.
Token cost

What it costs to keep this loaded

Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.

ModelPer sessionOnce invoked
Fable 5 $0.00056 $0.00457
Opus 5 $0.00028 $0.00229
Sonnet 5 $0.00011 $0.00091
Haiku 4.5 $0.00006 $0.00046

Measured 2d ago against content hash ca4e167ac3b2, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

plannotator-tui scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 2d ago.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Nothing flagged

None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.

skills/plannotator-tui/SKILL.md · 44 lines

What it actually says

plannotator-tui: hand a document to the human for review

Only when HERDR_ENV=1 (you are running inside Herdr). Otherwise tell the human where the file is and ask them to review it.

  1. Write the document to a file. Do not paste it into chat as well.

  2. Open it for review, from your own pane:

    plannotator-tui herdr open docs/plans/auth.md
    

    plannotator-tui opens beside you (or wherever the user configured it), already knowing that feedback comes back to this pane.

  3. End your turn. Do not wait, poll, or read the pane. The review arrives as the next user message, as numbered feedback:

    ## 1. (line 12) Feedback on: "Rotate the token on every…"
    > Rotation on every privilege change will log people out…
    

    Address every item, then continue.

When you list files you want the human to open, print them as file:// hyperlinks (OSC 8) so Ctrl-click in Herdr opens them in plannotator-tui:

printf '\e]8;;file://%s\e\\%s\e]8;;\e\\\n' "$PWD/docs/plans/auth.md" "docs/plans/auth.md"

If plannotator-tui is not on PATH, the raw Herdr command is:

herdr plugin pane open --plugin plannotator-tui --entrypoint doc --placement split \
  --direction right --target-pane "$HERDR_PANE_ID" --focus --cwd "$PWD" \
  --env PLANNOTATOR_TUI_FILE="$PWD/docs/plans/auth.md" --env PLANNOTATOR_TUI_DELIVER_TO="$HERDR_PANE_ID"
Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

  1. 2d ago First seen · 44 lines · 56 tokens per session scan A ca4e167ac3b2

Subscribe to this mod's changes

plannotator-tui is a skill published in the GitHub repository plannotator/herdr-annotate (261 stars, last pushed 2d ago), licensed MIT. It adds 56 tokens to every session and 457 once invoked, about $0.0003 per session on Opus 5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.

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