change-boot

change-boot is a skill for Claude Code, Codex from tikalk/adlc-team-skills. It costs 102 tokens per session (1,754 once invoked), scanned A, original, MIT.

A session-start workflow that loads documented reasons behind past code changes from Git history. Git is a version-control system, and this record focuses on why reverts, hotfixes, and other changes happened.

In plain words
What is it for?
Use it before refactoring unfamiliar areas or investigating reverts and hotfixes, and when a change should be linked to an issue or its reasoning captured.
Why use it?
It helps developers avoid undoing deliberate decisions when changing unfamiliar code and gives newly discovered rationale a place to be recorded.

Skill for Claude CodeCodex

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

Good fit Use it before refactoring unfamiliar areas or investigating reverts and hotfixes, and when a change should be linked to an issue or its reasoning captured.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/tikalk/adlc-team-skills/change-boot
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 tikalk/adlc-team-skills --skill change-boot
Clone the repo
git clone --depth 1 https://github.com/tikalk/adlc-team-skills

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 change-boot

README.md
[![agentmods](https://agentmods.dev/badge/skills/tikalk/adlc-team-skills/change-boot/github.svg)](https://agentmods.dev/skills/tikalk/adlc-team-skills/change-boot)
Your own site
<a href="https://agentmods.dev/skills/tikalk/adlc-team-skills/change-boot"><img src="https://agentmods.dev/badge/skills/tikalk/adlc-team-skills/change-boot/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 change-boot

Your own site · 80×15
<a href="https://agentmods.dev/skills/tikalk/adlc-team-skills/change-boot"><img src="https://agentmods.dev/badge/skills/tikalk/adlc-team-skills/change-boot.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 102 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 1,754 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 $0.00102 $0.01754
Opus 5.5 $0.00041 $0.00702
Sonnet 5.5 $0.00020 $0.00351
Haiku 4.5 $0.00010 $0.00175

Measured 10d ago against content hash e01dafa3ace4, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

change-boot 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 10d 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/change-boot/SKILL.md · 147 lines

How it starts

The opening of the file, as written. The whole thing — 147 lines — stays where its author put it; the contents beside it link to each section on GitHub.

change-boot

Overview

One of the five class boots surfaced by team-boot's Class Boots catalog. team-boot injects the always-relevant team context (constitution, CDR index, skills registry) at session start; this skill loads the change history layer on demand — the published ChDR index mined from git history — and pairs it with decision capture so change rationale is recovered (/change-init) rather than living only in commit messages.

Reading past rationale and recording new rationale are one loop: published ChDRs explain why the code looks the way it does; rationale discovered during the work flows back into the same record system.

When to Use

Invoke at the START of a matching task — before planning the todo list and before implementation — so the ChDR context informs planning. Never defer to session end.

Invoke when:

  • Refactoring or modifying unfamiliar code — check whether a ChDR explains the current shape before changing it.
  • Analyzing reverts, hotfixes, or fix chains ("why was this reverted?").
  • The session authors git changes with human-authored messages (commit/merge/ revert/rebase/cherry-pick/tag with an authored message, authored PR title/body, CHANGELOG edit) — evaluate at session end whether the rationale is non-obvious enough for a ChDR; routine ops with generated or empty messages are not ChDRs (proportionality gate).
  • The session produces change rationale: a revert/hotfix explanation, or a commit that links to an issue tracker (the /change-init mining signal).

Core Process

Step 1: Locate the ChDR Index

From the current working directory (do NOT walk up parent directories):

  • Primary: docs/adlc/memory/chdr.md (generated by /change-publish; rows start with | ChDR)
  • Fallback: .adlc/memory/chdr.md (legacy layout, pre-ADR-401)

If the index is missing but docs/adlc/memory/chdr/ChDR-*.md or legacy .adlc/memory/chdr/ChDR-*.md files exist, synthesize a lean table from each file (ID from filename; Title/Status from frontmatter or first heading). If nothing exists, report 0 ChDRs — never fabricate rows.

Read the full file on GitHub · 147 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. 10d ago Changed · +4 lines e01dafa3ace4
  2. 13d ago Changed · +15 lines ddde4cd08649
  3. 15d ago Changed · +13 lines · +35 tokens per session b38698ead3f7
  4. 16d ago Changed · +3 lines b13a77a5fdb6
  5. 24d ago Changed · +15 lines 59abdfb9f2f8
  6. 25d ago First seen · 97 lines · 67 tokens per session scan A e1eb46616935

Subscribe to this mod's changes

change-boot is a skill published in the GitHub repository tikalk/adlc-team-skills (141 stars, last pushed yesterday), licensed MIT. It adds 102 tokens to every session and 1,754 once invoked, about $0.0004 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 2026-09-21.