writing-plans

A tool for turning an approved design or specification into a step-by-step coding plan. It breaks development work into small tasks, including tests and the files and commands involved.

In plain words
What is it for?
Use it to plan multi-step features or fixes before implementation, especially when following TDD, a method that writes a failing test before the code that makes it pass.
Why use it?
It removes the guesswork between agreeing on a design and writing code. The plan gives another developer or coding agent enough context to carry out the work and check each step.

Skill for Claude CodeCodexCursor

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/programmeranthony/expert-coding-harness/writing-plans
Any agent
npx skills add ProgrammerAnthony/Expert-Coding-Harness --skill writing-plans
Clone the repo
git clone --depth 1 https://github.com/ProgrammerAnthony/Expert-Coding-Harness

Made for: Claude Code, Codex, Cursor.

Per session 66 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 1,937 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 $0.00066 $0.01937
Opus 5 $0.00033 $0.00968
Sonnet 5 $0.00013 $0.00387
Haiku 4.5 $0.00007 $0.00194

Measured 3d ago against content hash 889d4f9abcf6, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, 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 3d 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.

.cursor/skills/writing-plans/SKILL.md · 177 lines

How it starts

The opening of the file, as written. The whole thing — 177 lines — stays where its author put it; the contents beside it link to each section on GitHub.

实施计划编写

已获用户批准的设计文档(例如方案设计师产出的 docs/specs/…-设计.md)基础上,编写可交给代理或工程师逐步执行的实施计划。假设执行者对代码库与领域几乎零上下文、测试习惯一般:计划中必须写明路径、命令、完整代码块与预期输出。遵循 DRY、YAGNI、TDD、小步提交。

开场声明:「我正在使用实施计划编写技能生成实施计划。」

保存路径(默认): docs/specs/plans/YYYY-MM-DD-<功能简述>.md
(若用户或项目已有约定路径,以约定为准。)

可选上下文: 大功能建议在独立分支或 git worktree 上实施;若用户未准备,在计划头注明即可,不阻塞写计划。


Inputs / Outputs / Gates / Handoffs(统一契约)

  • Inputs(最小输入):已获批准的设计/规格说明(路径 + 核心需求 + 约束);目标仓库与测试/运行命令(如 pytest/npm test/go test 等)。
  • Outputs(产物形态):一份可勾选、可交接执行的实施计划(结构参考 references/plan-template.md)。
  • Gates(继续前必须满足)
    • 禁止占位词(TODO/TBD/适当/稍后补充),每步必须可执行(路径/命令/预期输出齐全)。
    • 需要用户确认的决策点必须显式列出并暂停等待。
    • 通用门控清单可复制使用:../code-review-expert/references/quality-gates-checklist.md
  • Handoffs(推荐下游)
    • subagent-driven-development(子代理驱动开发):按计划逐任务执行
    • code-review-expert(代码审查专家):最终质量门禁/收尾审查
    • tdd-master(TDD 开发大师):执行阶段遵循 RED-GREEN-REFACTOR 节奏

范围检查

若规格仍包含多个可独立交付的子系统,应退回方案阶段拆成多份子规格;若未拆,则建议多份实施计划(一子系统一份),每份计划都能单独产出可运行、可测试的软件。


文件结构先行

在写任务前,先列出将创建/修改的文件及职责,作为分解依据:

  • 边界清晰、接口明确;单文件单职责;相关变更放在相近位置(按职责而非按技术层硬拆)。
  • 在存量代码库中遵循既有模式;若当前修改的文件已臃肿,可在计划中包含合理拆分步骤。

任务粒度

每一步对应一个可完成动作(约 2–5 分钟):

  • 「编写失败测试」一步
  • 「运行并确认失败」一步
  • 「写最小实现使测试通过」一步
  • 「运行并确认通过」一步
  • 「提交」一步

计划文档头部(必填)

每一份计划必须以如下头部开头:

# [功能名] 实施计划

> **给代理执行者:** 推荐配合 `subagent-driven-development(子代理驱动开发)`(每任务独立子代理 + 两阶段审查)或在本会话内按勾选逐步执行并在批次节点与用户确认。任务使用 `- [ ]` 勾选跟踪。

**目标:** [一句话说明交付什么]

**架构要点:** [2–3 句]

**技术栈:** [主要语言/框架/测试命令]

**关联设计文档:** `docs/specs/…-设计.md`(路径按实际填写)

---

任务块模板

### 任务 N:[组件或主题名]

**涉及文件:**
- 新建:`exact/path/to/file.py`
- 修改:`exact/path/to/existing.py`(可注行号范围)
- 测试:`tests/exact/path/to/test_xxx.py`

- [ ] **步骤 1:编写失败测试**

```python
def test_具体行为():
    result = function(输入)
    assert result == 期望
```

- [ ] **步骤 2:运行测试确认失败**

运行:`pytest tests/path/test.py::test_具体行为 -v`  
预期:失败(例如 NameError / 断言失败,写明预期信息)

- [ ] **步骤 3:最小实现**

```python
def function(输入):
    return 期望
```

- [ ] **步骤 4:运行测试确认通过**

运行:`pytest tests/path/test.py::test_具体行为 -v`  
预期:通过

- [ ] **步骤 5:提交**

```bash
git add …
git commit -m "feat: …"
```

Read the full file on GitHub · 177 lines

Files

What ships with it

2 files 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. 3d ago First seen · 177 lines · 66 tokens per session scan A 889d4f9abcf6

Subscribe to this mod's changes

writing-plans is a skill published in the GitHub repository ProgrammerAnthony/Expert-Coding-Harness (235 stars, last pushed 3mo ago), licensed MIT. It adds 66 tokens to every session and 1,937 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 2026-08-30.

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