writing-plans

writing-plans is a skill for Claude Code, Codex from Abruptive/Ankh.md. It costs 35 tokens per session (156 once invoked), scanned A, original, MIT.

A detailed implementation plan that breaks a multi-step software task into small actions, with file paths, code examples, and checks.

In plain words
What is it for?
Use it before implementing a larger change to define the exact edits, testing commands, verification steps, and rollback approach.
Why use it?
It turns a specification or set of requirements into instructions that another developer can follow without already knowing the project.

Skill for Claude CodeCodex

Written for no agent in particular: nothing here depends on one.

Good fit Use it before implementing a larger change to define the exact edits, testing commands, verification steps, and rollback approach.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/abruptive/ankh.md/writing-plans
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.

Any agent
npx skills add Abruptive/Ankh.md --skill writing-plans
Clone the repo
git clone --depth 1 https://github.com/Abruptive/Ankh.md

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 writing-plans

README.md
[![agentmods](https://agentmods.dev/badge/skills/abruptive/ankh.md/writing-plans/github.svg)](https://agentmods.dev/skills/abruptive/ankh.md/writing-plans)
Your own site
<a href="https://agentmods.dev/skills/abruptive/ankh.md/writing-plans"><img src="https://agentmods.dev/badge/skills/abruptive/ankh.md/writing-plans/github.svg" alt="Measured on agentmods" height="20"></a>

Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.

agentmods 80×15 button for writing-plans

Your own site · 80×15
<a href="https://agentmods.dev/skills/abruptive/ankh.md/writing-plans"><img src="https://agentmods.dev/badge/skills/abruptive/ankh.md/writing-plans.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 35 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 156 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.
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 $0.00035 $0.00156
Opus 5.5 $0.00014 $0.00062
Sonnet 5.5 $0.00007 $0.00031
Haiku 4.5 $0.00003 $0.00016

Measured 1mo ago against content hash f9c2de28f919, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

writing-plans 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 1mo 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.

examples/plan-writer/.agent/skills/software-development/writing-plans/SKILL.md · 25 lines

What it actually says

Writing Implementation Plans

Write comprehensive implementation plans assuming the implementer has zero context. Document everything: which files to touch, complete code, testing commands, how to verify.

Bite-sized tasks

Each task = 2-5 minutes of focused work. One action per step.

Format

  • Summary
  • Prerequisites
  • Task 1: [action] – [expected outcome]
  • Task 2: ...
  • Verification steps
  • Rollback if needed
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. 1mo ago First seen · 25 lines · 35 tokens per session scan A f9c2de28f919

Subscribe to this mod's changes

writing-plans is a skill published in the GitHub repository Abruptive/Ankh.md (75 stars, last pushed 7mo ago), licensed MIT. It adds 35 tokens to every session and 156 once invoked, about $0.0001 per session on Opus 5.5. 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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