guided-coding-write-plan

A plan-writing step for recording an agreed coding approach in an ai-plans folder.

In plain words
What is it for?
Use it after discussing a coding task when you want the final plan saved in the repository.
Why use it?
It keeps the agreed approach in a dated, uniquely named file without starting the planning discussion itself.

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/feo2x/guided-coding/guided-coding-write-plan
Any agent
npx skills add feO2x/guided-coding --skill guided-coding-write-plan
Clone the repo
git clone --depth 1 https://github.com/feO2x/guided-coding

Made for: Claude Code, Codex.

Per session 31 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 688 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. Scan, not verified.
Origin 91% copy Near-identical to another mod 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 $0.00031 $0.00688
Opus 5 $0.00015 $0.00344
Sonnet 5 $0.00006 $0.00138
Haiku 4.5 $0.00003 $0.00069

Measured yesterday against content hash 7a8c8ac45209, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

guided-coding-write-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 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.

Origin

This is a copy

91% identical to write-plan — 7 lines differ, which has more behind it and is treated as the original. This page carries a canonical link to it rather than competing with it.

skills/guided-coding-write-plan/SKILL.md · 77 lines

How it starts

The opening of the file, as written. The whole thing — 77 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Write a Plan

Write the agreed approach into ai-plans/. Do not use this skill to begin or replace the planning conversation. Read the repository instructions, including ai-plans/AGENTS.md, first.

After writing, report the plan path and stop.

File name

Use:

YYYY-MM-DD-HHMM-<issue-id>-<kebab-case-description>.md

Omit <issue-id>- when the work has no tracker issue. Obtain the current UTC timestamp from the shell; never infer it from conversation context. For example:

date -u +%F-%H%M

In PowerShell, use (Get-Date).ToUniversalTime().ToString("yyyy-MM-dd-HHmm").

Normalize the tracker identifier for filenames: convert it to lowercase, remove a leading #, replace each run of characters other than a-z and 0-9 with one hyphen, trim leading and trailing hyphens, and do not add zero padding. Stop if normalization produces an empty identifier. If the work requires an issue but none exists, stop and suggest the Guided Coding issue-preparation skill instead of creating a temporary filename.

Resolve the complete destination path before writing and confirm it does not exist. Never overwrite or reuse an existing plan or Plan Deviations document; report a collision and stop.

Structure

Start with # Title, followed by exactly these ## sections in order:

  1. ## Rationale: briefly state the problem and overarching goal.
  2. ## Acceptance Criteria: list observable, verifiable outcomes as unticked Markdown tasks (- [ ]). Describe results, not implementation steps.
  3. ## Technical Details: record important decisions, constraints, affected components, and non-obvious interactions. Give a senior engineer room to implement.

Use minimal code examples only when they clarify an important contract, such as an API signature, interface, or DTO shape. Say whether an example is exact or illustrative when unclear. Avoid method bodies, step-by-step instructions, exhaustive file lists, and routine background.

When behavior changes, require appropriate automated test coverage in the acceptance criteria. Require benchmarks only when performance is a material risk or requirement.

Read the full file on GitHub · 77 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. yesterday First seen · 77 lines · 31 tokens per session scan A 7a8c8ac45209

Subscribe to this mod's changes

guided-coding-write-plan is a skill published in the GitHub repository feO2x/guided-coding (6 stars, last pushed 18d ago), licensed MIT. It adds 31 tokens to every session and 688 once invoked, about $0.0002 per session on Opus 5. A static security scan graded it A with 0 findings. It is 91% identical to write-plan, differing in 7 lines, and is treated as a copy.

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