plan:run

A procedure for carrying out an already approved implementation plan in a fresh coding session. It reads the project's specification and task plan, completes the work in order, and records progress.

In plain words
What is it for?
Executing planned development tasks, checking them off, reporting milestones, and stopping cleanly when a checkpoint or genuine scope problem is reached.
Why use it?
It keeps a long implementation organized and makes it possible to continue after an interruption without repeating the planning work.

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/franzos/claude-plugins/plan-run
Any agent
npx skills add franzos/claude-plugins --skill plan-run
Clone the repo
git clone --depth 1 https://github.com/franzos/claude-plugins

Made for: Claude Code, Codex.

Per session 70 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 1,641 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 $0.00070 $0.01641
Opus 5 $0.00035 $0.00821
Sonnet 5 $0.00014 $0.00328
Haiku 4.5 $0.00007 $0.00164

Measured yesterday against content hash f139025258a0, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

plan:run 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 yesterday.

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.

plugins/plan/skills/plan-run/SKILL.md · 119 lines

How it starts

The opening of the file, as written. The whole thing — 119 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Executing a plan

$KB is your knowledge-base root: a directory outside the working repo holding <project>/specs/, <project>/plans/ and <project>/checkpoints/. Point at it from your CLAUDE.md. Keeping these out of the repo keeps process artifacts from leaking into it, and the knowledge survives clones, branches and machines.

Run this in a fresh session. Execution in the same session that wrote the plan starts at 100k+ of context and pays that on every turn for the rest of the run.

Run it autonomously

Work the whole plan through without checking in. The user already signed the plan off. Do not ask permission to start a task, to move to the next one, or to act on the commit answer they give you in section 1.

Report at milestones, not per task - a short line when a group of related tasks lands, not a narration of each one.

There are exactly four reasons to stop and ask:

  1. The two run questions at the start (section 1), asked together, once.
  2. A task contradicts the spec, or doing it would change scope (section 3).
  3. Something is genuinely ambiguous and both readings lead to materially different work.
  4. The context thresholds below.

Anything else - a task that needs a small mechanical deviation, a pre-existing failure, a judgment call with an obvious default - decide it, note it, keep going.

1. Load

Find the plan under $KB/<project>/plans/. If several match, take the newest by date and say which one you took.

Check $KB/<project>/checkpoints/ first. If a checkpoint exists for this slug, this is a resume, not a fresh run - use /plan:resume instead.

Read, in this order: the spec, the plan, then the project's CLAUDE.md (repo root first, then $KB/<project>/CLAUDE.md). Read the files the plan names as you reach the tasks that touch them, not up front.

Record the starting state before touching anything: current branch, whether the tree is clean, and the current pass/fail count. This is the baseline you will compare against at the end.

Read the full file on GitHub · 119 lines

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. yesterday First seen · 119 lines · 70 tokens per session scan A f139025258a0

Subscribe to this mod's changes

plan:run is a skill published in the GitHub repository franzos/claude-plugins (1 stars, last pushed 20d ago), licensed MIT. It adds 70 tokens to every session and 1,641 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 2026-08-31.

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