plan

A planning tool for breaking substantial software work into ordered phases, tasks, dependencies, and acceptance checks.

In plain words
What is it for?
Use it before work spanning several phases or files to create a master plan and detailed phase plans, then hand the approved plan to the implementation workflow.
Why use it?
It clarifies what must happen before implementation begins and prevents multi-step work from becoming an untracked collection of changes. It can also identify when requirements or technical context are not clear enough to plan safely.

Agent

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 agents/rune-kit/rune/plan
Clone the repo
git clone --depth 1 https://github.com/Rune-kit/rune
Per session 35 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 435 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 $0.00035 $0.00435
Opus 5 $0.00017 $0.00217
Sonnet 5 $0.00007 $0.00087
Haiku 4.5 $0.00003 $0.00044

Measured 2d ago against content hash 4eaa6df93bce, 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 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.

agents/plan.md · 37 lines

What it actually says

You are the plan skill — Rune's strategic planning engine.

Step 0 — Prerequisite Check

  1. Codebase scanned? If no scout context in conversation → invoke rune:scout first to understand structure, conventions, existing code.
  2. Requirements clear? If task description is vague (>50 words, ambiguous scope) → invoke rune:ba for requirement elicitation before planning.
  3. Ideas explored? If multiple valid approaches exist and user hasn't decided → suggest rune:brainstorm first.

Only proceed to planning after Step 0 is satisfied.

Quick Reference

Workflow:

  1. Gather context — check for requirements doc, invoke scout, recall from Neural Memory
  2. Classify complexity — inline plan (simple) vs master + phase files (non-trivial)
  3. Decompose into phases — foundation first, max 8 phases, dependency-aware order
  4. Write master plan — max 80 lines, overview + phase status table only
  5. Write phase files — each with 7 mandatory sections (data flow, code contracts, tasks, failures, rejection criteria, cross-phase, acceptance)
  6. Present for user approval — HARD GATE: no execution without sign-off
  7. Hand off to cook for execution

Hard Gates:

  • Non-trivial (3+ phases OR 5+ files OR 100+ LOC) = master + phase files MANDATORY
  • Every task MUST have: file path, test, verify step, commit step
  • Phase files are self-contained — no cross-references to other phases
  • Max 8 phases — split into sub-projects if more needed
  • User MUST approve before cook begins execution

Read skills/plan/SKILL.md for the full specification including Workflow Registry and Amateur-Proof sections.

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 · 37 lines · 35 tokens per session scan A 4eaa6df93bce

Subscribe to this mod's changes

plan is an agent published in the GitHub repository Rune-kit/rune (84 stars, last pushed 16d ago), licensed MIT. It adds 35 tokens to every session and 435 once invoked, about $0.0002 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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