A planning skill for keeping related roadmap, status, handoff, notes, decisions, questions, ideas, and file-structure documents organized.

Use it to create, reorganize, review, and update multi-file project plans and handoff tasks.

It prevents plans spread across many files from becoming inconsistent, outdated, or difficult to follow.

plan-tree — Skill for Claude Code and Codex by SeemSeam: A planning skill for keeping related roadmap, status, handoff…

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/seemseam/claude_codex_bridge/plan-tree

Any agent

npx skills add SeemSeam/claude_codex_bridge --skill plan-tree

Clone the repo

git clone --depth 1 https://github.com/SeemSeam/claude_codex_bridge

Made for: Claude Code, Codex.

Wrote this? Show the measurements

A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.

README.md

[![agentmods](https://agentmods.dev/badge/skills/seemseam/claude_codex_bridge/plan-tree.svg)](https://agentmods.dev/skills/seemseam/claude_codex_bridge/plan-tree)

Your own site

<a href="https://agentmods.dev/skills/seemseam/claude_codex_bridge/plan-tree"><img src="https://agentmods.dev/badge/skills/seemseam/claude_codex_bridge/plan-tree.svg" alt="Measured on agentmods" height="20"></a>

Per session 143 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.

When invoked 5,076 The whole file, excluding the scripts and references it only reads on demand.

Security scan A 0 findings. Scan, not verified.

Origin unknown 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.

Model	Per session	Once invoked
Fable 5	$0.00143	$0.05076
Opus 5	$0.00072	$0.02538
Sonnet 5	$0.00029	$0.01015
Haiku 4.5	$0.00014	$0.00508

Measured 4d ago against content hash 3428522c1770, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

plan-tree 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 4d 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.

useful_tools/claude_skills/plan-tree/SKILL.md · 366 lines

The source is not reproduced here

No licence file

Read it on GitHub

Files

What ships with it

1 file beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.

agents/openai.yaml 310 B

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.

4d ago First seen · 366 lines · 143 tokens per session scan A 3428522c1770

Subscribe to this mod's changes

plan-tree is a skill published in the GitHub repository SeemSeam/claude_codex_bridge (3,471 stars, last pushed yesterday), with no licence file. It adds 143 tokens to every session and 5,076 once invoked, about $0.0007 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.

Documents Planning Productivity ai-coding ai-collaboration antigravity claude-code cli codex

adr

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plan-tree