save-plan

save-plan is a skill for Claude Code from addit-digital/addit-harness. It costs 83 tokens per session (1,118 once invoked), scanned A, original, MIT.

A way to save an implementation plan or diagram-rich design document as a Markdown file with Mermaid diagrams. Mermaid is a text format that editors and GitHub can render as diagrams.

In plain words
What is it for?
Saving the current plan to a file under a work folder or temporary location, while keeping its sections and diagrams unchanged.
Why use it?
It makes plans easier to open, read, and share when the terminal only shows Mermaid code and does not keep a convenient saved copy.

Skill for Claude Code

Written for Claude Code: user-invocable in frontmatter. Also seen: mentions Claude Code.

Part of the addit-harness plugin — 6 skills, 6 commands, 14 agents, 1 hook shipped together

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/addit-digital/addit-harness/save-plan
Any agent
npx skills add addit-digital/addit-harness --skill save-plan
Clone the repo
git clone --depth 1 https://github.com/addit-digital/addit-harness

Made for: Claude Code.

Or install addit-harness, the plugin that ships this one along with the rest of its 6 skills, 6 commands, 14 agents, 1 hook.

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 save-plan

README.md
[![agentmods](https://agentmods.dev/badge/skills/addit-digital/addit-harness/save-plan.svg)](https://agentmods.dev/skills/addit-digital/addit-harness/save-plan)
Your own site
<a href="https://agentmods.dev/skills/addit-digital/addit-harness/save-plan"><img src="https://agentmods.dev/badge/skills/addit-digital/addit-harness/save-plan.svg" alt="Measured on agentmods" height="20"></a>
Per session 83 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 1,118 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 5.1 $0.00083 $0.01118
Opus 5 $0.00042 $0.00559
Sonnet 5 $0.00017 $0.00224
Haiku 4.5 $0.00008 $0.00112

Measured 5d ago against content hash 40865949d64a, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-06, from the pricing page.

Security

Grade A, and why

save-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 5d 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/save-plan/SKILL.md · 80 lines

How it starts

The opening of the file, as written. The whole thing — 80 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Save plan — persist a plan to a viewable markdown file

The Claude Code CLI shows a ```mermaid block as raw code, never a rendered diagram, and a plan presented in the CLI isn't saved anywhere convenient to open. This skill writes the plan to a markdown file so it can be opened with rendered mermaid — in an IDE preview (Cursor / VS Code, Ctrl/Cmd+Shift+V) or on GitHub (renders mermaid natively).

What to save

The current plan under discussion — typically the approved plan-mode plan (the harness plan file) or the most recent plan/design doc written in this session. Preserve it verbatim, including all mermaid blocks and section structure. If no plan exists yet, say so and stop — don't invent one.

Where it goes — artifact routing

This skill is for implementation plans (phased steps, to-do lists, acceptance criteria). Docs are grouped by unit of work, not by type: one folder per feature, bug fix, improvement, or enhancement at docs/work/<slug>/, holding everything produced for it in per-type subfolders. The broader taxonomy:

Artifact Subfolder Produced by
Implementation plan plans/ This skill (default)
Architecture design / solution doc (no to-do list) solutions/ @backend-architect, @frontend-architect directly
Architecture review report architecture-reports/ @architect-reviewer directly
QA/regression verification report qa-reports/ @qa-engineer directly

For a pure architecture design, review report, or QA report, skip this skill — the relevant agent writes directly to the correct subfolder inside docs/work/<slug>/, following the same naming convention (create the folder + a docs/work/README.md index row if missing).

Choosing permanent vs temporary

  • Permanent (default): docs/work/<YYYY-MM-DD>-<kebab-title>/plans/plan.md (or docs/work/<ticket-id>-<kebab-title>/plans/plan.md if the project uses an issue tracker), tracked in git. Best for design docs worth keeping and for remote sessions (push → view on GitHub).
  • Temporary (--temp): a scratch file under .plans/ (gitignored) for quick local viewing without committing. Mainly useful in local CLI sessions — in a remote/container session a temp file isn't on your machine, so prefer permanent
    • push there.

Read the full file on GitHub · 80 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. 5d ago First seen · 80 lines · 83 tokens per session scan A 40865949d64a

Subscribe to this mod's changes

save-plan is a skill published in the GitHub repository addit-digital/addit-harness (3 stars, last pushed 13d ago), licensed MIT. It adds 83 tokens to every session and 1,118 once invoked, about $0.0004 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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