plan

plan is a skill for Claude Code, Codex from BeppeTemp/cartographer. It costs 52 tokens per session (720 once invoked), scanned A, original, Apache-2.0.

A process for turning an analysis or design discussion into a self-contained GitHub plan issue. The issue records the intended work so another developer can implement it later.

In plain words
What is it for?
Use it to survey related open plans, inspect the code for accurate file references, reserve a decision number, and write an implementation handoff issue.
Why use it?
It prevents important design decisions from being scattered across conversation or duplicated in existing plans. It also checks the repository’s numbering and planning rules.

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/beppetemp/cartographer/plan
Any agent
npx skills add BeppeTemp/cartographer --skill plan
Clone the repo
git clone --depth 1 https://github.com/BeppeTemp/cartographer

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.

agentmods badge for plan

README.md
[![agentmods](https://agentmods.dev/badge/skills/beppetemp/cartographer/plan.svg)](https://agentmods.dev/skills/beppetemp/cartographer/plan)
Your own site
<a href="https://agentmods.dev/skills/beppetemp/cartographer/plan"><img src="https://agentmods.dev/badge/skills/beppetemp/cartographer/plan.svg" alt="Measured on agentmods" height="20"></a>
Per session 52 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 720 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 $0.00052 $0.00720
Opus 5 $0.00026 $0.00360
Sonnet 5 $0.00010 $0.00144
Haiku 4.5 $0.00005 $0.00072

Measured 4d ago against content hash 8348df87990e, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

plan 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.

.agents/skills/plan/SKILL.md · 52 lines

How it starts

The opening of the file, as written. The whole thing — 52 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Plan — analysis → implementation handoff

The agent-neutral source of truth is CONTRIBUTING.md §Plan issues (procedure

  • self-sufficiency test) and the issue structure in .github/ISSUE_TEMPLATE/plan.md. Read both; this skill only adds the Codex-side glue.

Writing a plan

  1. Survey the open plans before designing, not just the code: gh issue list --label plan --state open, then read the candidates that touch the same area. A request already covered by an open plan (or already implemented on main) is reported back, not re-planned; a partial overlap means extending/amending the existing issue or stating the relationship (execution order, shared files) in the new one.
  2. Reserve the next free D number. Inspect both implemented records (rtk proxy rg -o '^## D[0-9]+' docs/decisions/) and every plan issue title (rtk gh issue list --label plan --state all --limit 1000), then choose the next number above both maxima. An issue title reserves its number even before the entry exists. Use Plan: <title> (D<n>); the D entry is written at the end of implementation, not now: the plan is its draft.
  3. Derive the real file:line pointers before writing (targeted symbol grep/search): the plan contains pointers, not paraphrases.
  4. Write the body (in English) to a scratch file following the template structure, then: gh issue create --title "Plan: <title> (D<n>)" --label plan --body-file <file>.
  5. Apply the self-sufficiency test from CONTRIBUTING.md before submitting.
  6. One analysis, several plans → every issue states the cross-plan execution order and which sibling plans touch the same files (those land strictly sequentially, never in parallel). Amend a plan by editing the issue body while nothing is implemented yet; once implementation starts, amend via comments only.
  7. Sibling cross-links: create the issues in execution order, then amend each body to reference siblings as D<n> (#<issue>) — the numbers exist only after creation. A pointer into a sibling's not-yet-implemented artifact cites the plan (D<n> WP<m>), never an invented file:line.

Read the full file on GitHub · 52 lines

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.

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. 4d ago First seen · 52 lines · 52 tokens per session scan A 8348df87990e

Subscribe to this mod's changes

plan is a skill published in the GitHub repository BeppeTemp/cartographer (17 stars, last pushed 6d ago), licensed Apache-2.0. It adds 52 tokens to every session and 720 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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