change-impact

change-impact is a skill for Claude Code, Codex from Seekers2001/docs-governance. It costs 128 tokens per session (795 once invoked), scanned A, original, MIT.

A checklist-based method for examining what a proposed change may affect across code, data, interfaces, tests, documentation, deployment, and rollback.

In plain words
What is it for?
It is for checking the effects of cross-module edits, database migrations, authentication changes, public interfaces, and production releases.
Why use it?
It reduces surprises from changes that reach beyond the file or module being edited. It also compares the planned impact with the actual changes afterward.

Skill for Claude CodeCodex

Part of the docs-governance plugin — 8 skills, 7 commands, 6 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/seekers2001/docs-governance/change-impact
Any agent
npx skills add Seekers2001/docs-governance --skill change-impact
Clone the repo
git clone --depth 1 https://github.com/Seekers2001/docs-governance

Made for: Claude Code, Codex.

Or install docs-governance, the plugin that ships this one along with the rest of its 8 skills, 7 commands, 6 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 change-impact

README.md
[![agentmods](https://agentmods.dev/badge/skills/seekers2001/docs-governance/change-impact.svg)](https://agentmods.dev/skills/seekers2001/docs-governance/change-impact)
Your own site
<a href="https://agentmods.dev/skills/seekers2001/docs-governance/change-impact"><img src="https://agentmods.dev/badge/skills/seekers2001/docs-governance/change-impact.svg" alt="Measured on agentmods" height="20"></a>
Per session 128 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 795 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 $0.00128 $0.00795
Opus 5 $0.00064 $0.00398
Sonnet 5 $0.00026 $0.00159
Haiku 4.5 $0.00013 $0.00080

Measured 5d ago against content hash 24f4bdaa4796, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

change-impact 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/change-impact/SKILL.md · 47 lines

What it actually says

变更影响分析

默认只读。先用真实依赖与现有文档证明影响面,再实施;未知项明确标“未验证”。

修改前

依次回答:

  1. 代码:入口、直接调用方、下游消费者、生成物和兼容层会受什么影响?
  2. 数据:Schema、迁移、历史数据、序列化、缓存和幂等键是否变化?
  3. 接口:API、消息、文件格式或 CLI 是否改变?消费者和提供者分别是谁?
  4. 测试:哪些成功标准、TEST-ID、契约测试和回归命令应证明变更正确?
  5. 文档:是否影响 MAP、STATUS、LOG、CONTEXT、ADR、CONTRACT、Spec/Plan、TESTS 或 REGRESSION?
  6. 发布:部署顺序、兼容窗口、数据恢复、回滚命令和不可逆部分是什么?

证据优先取自真实 import/调用、路由、Schema、配置、生成脚本、git grepgit diff 和可执行测试。不要凭目录名猜依赖。

路由规则

  • 架构、数据库、认证、部署拓扑或长期技术策略:检查 context-and-decisions / ADR。
  • 跨端接口:先更新 contract-first 管理的唯一契约源,再规划消费者、提供者和联调证据。
  • 需求、业务规则、风险或 Bug:让成功标准保留在 Spec/Issue,并用 test-collaboration 关联 TEST-ID。
  • 模块行为或依赖变化:实施后运行 module-regression
  • 数据库迁移、破坏性接口、认证和生产发布:必须写回滚条件、恢复步骤、兼容期和不可逆部分;缺任何一项就标为阻塞,不代替人执行回滚。

输出

小改动在回复中给出:影响对象、证据、所需验证、文档同步和未知项。只有跨模块、高风险或用户明确要求留档时,才把报告写入 docs/impacts/;写文件前先确认,避免制造一次性文档。

实施后对照

完成实现后检查:

  1. 实际改动是否解决 Spec/Issue 中的原始问题。
  2. 实际 diff 是否超出已声明范围;超出项是否获得授权并补充影响分析。
  3. 测试和人工证据是否真正覆盖成功标准,而非只证明命令运行过。
  4. CONTEXT、ADR、CONTRACT、TESTS、REGRESSION、MAP、STATUS 和 LOG 是否按实际变化同步。
  5. 是否遗留临时代码、兼容逻辑、迁移尾项或后续 Issue。

默认在交付回复中报告对照结论。只有高风险变更或用户要求正式评审时,才保存到 docs/reviews/。不要创建通用 REFLECTION.md

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 · 47 lines · 128 tokens per session scan A 24f4bdaa4796

Subscribe to this mod's changes

change-impact is a skill published in the GitHub repository Seekers2001/docs-governance (28 stars, last pushed 22d ago), licensed MIT. It adds 128 tokens to every session and 795 once invoked, about $0.0006 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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