change-isolation

change-isolation is a skill for Claude Code from ivegamsft/basecoat. It costs 99 tokens per session (296 once invoked), scanned A, original, MIT.

A workflow design guide for monorepos, where several parts of one codebase share a repository but need to build and release independently.

In plain words
What is it for?
It helps define path ownership, separate CI/CD lanes, independent versioning, and checks for unwanted cross-layer triggers.
Why use it?
It prevents a change in one layer, such as mobile or infrastructure, from unnecessarily triggering work or releases in unrelated layers.

Skill for Claude Code

Written for Claude Code: allowed-tools in frontmatter.

Good fit It helps define path ownership, separate CI/CD lanes, independent versioning, and checks for unwanted cross-layer triggers.

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

Made for: Claude Code.

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-isolation

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

Your own site · 80×15
<a href="https://agentmods.dev/skills/ivegamsft/basecoat/change-isolation"><img src="https://agentmods.dev/badge/skills/ivegamsft/basecoat/change-isolation.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 99 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 296 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 $0.00099 $0.00296
Opus 5 $0.00049 $0.00148
Sonnet 5 $0.00020 $0.00059
Haiku 4.5 $0.00010 $0.00030

Measured 5d ago against content hash cfe20016f20d, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-08, from the pricing page.

Security

Grade A, and why

change-isolation 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-isolation/SKILL.md · 28 lines

What it actually says

Change Isolation Skill

Design and enforce CI/CD boundaries so different layers can evolve and release independently.

Templates in This Skill

Template Purpose
layer-boundary-matrix-template.md Defines layer-to-path ownership, lane names, and dependency directions
workflow-path-filter-checklist.md PR review checklist to verify trigger isolation and prevent cross-layer coupling
release-lane-contract-template.md Standard contract for versioning, promotion, and rollback per layer

Agent Pairing

Use with change-isolation-architect agent. For implementation details pair with devops-engineer; for schema change lanes pair with data-tier; for app/UI lanes pair with frontend-dev.

Files

What ships with it

4 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. 5d ago First seen · 28 lines · 99 tokens per session scan A cfe20016f20d

Subscribe to this mod's changes

change-isolation is a skill published in the GitHub repository ivegamsft/basecoat (4 stars, last pushed today), licensed MIT. It adds 99 tokens to every session and 296 once invoked, about $0.0005 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 2026-09-03.

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