check-drift

check-drift is a skill for Claude Code from kunalsuri/ai-fication-kit. It costs 22 tokens per session (229 once invoked), scanned A, original, Apache-2.0.

A verification and change-detection process for an AI knowledge base. It checks whether documented paths are valid and whether source changes are reflected in its maps.

In plain words
What is it for?
Use it to run strict path and drift checks, inspect repository changes, and draft updates to module or feature maps for manual review.
Why use it?
It helps find missing documentation, stale references, and new files or features that are not yet recorded.

Skill for Claude Code

Written for Claude Code: disable-model-invocation in frontmatter.

Good fit Use it to run strict path and drift checks, inspect repository changes, and draft updates to module or feature maps for manual review.

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Install with agentmods
npx agentmods add skills/kunalsuri/ai-fication-kit/check-drift
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 kunalsuri/ai-fication-kit --skill check-drift
Clone the repo
git clone --depth 1 https://github.com/kunalsuri/ai-fication-kit

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 check-drift

README.md
[![agentmods](https://agentmods.dev/badge/skills/kunalsuri/ai-fication-kit/check-drift/github.svg)](https://agentmods.dev/skills/kunalsuri/ai-fication-kit/check-drift)
Your own site
<a href="https://agentmods.dev/skills/kunalsuri/ai-fication-kit/check-drift"><img src="https://agentmods.dev/badge/skills/kunalsuri/ai-fication-kit/check-drift/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 check-drift

Your own site · 80×15
<a href="https://agentmods.dev/skills/kunalsuri/ai-fication-kit/check-drift"><img src="https://agentmods.dev/badge/skills/kunalsuri/ai-fication-kit/check-drift.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 22 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 229 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 $0.00022 $0.00229
Opus 5 $0.00011 $0.00114
Sonnet 5 $0.00004 $0.00046
Haiku 4.5 $0.00002 $0.00023

Measured 8d ago against content hash a5960d260eb6, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-08, from the pricing page.

Security

Grade A, and why

check-drift 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 8d 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.

.claude/skills/check-drift/SKILL.md · 20 lines

What it actually says

Run the mechanical verification and drift analysis to inspect the state of the ai/ knowledge-base:

  1. Run the path verifier: node install.mjs verify . --strict
  2. Run the drift detector with git history comparison: node install.mjs drift . --git --strict
  3. Run git status to inspect modified and untracked files.

If any issues are reported, or if git status reveals newly added or modified source files/templates that are not yet covered in the maps:

  • Draft updates to ai/guide/MODULE_MAP.md or ai/guide/FEATURE_MAP.md to map new folders, files, or features, or to update stale verified dates.
  • Mark any changes you draft as [inferred].
  • Report findings to the user and outline what needs their manual review.
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. 8d ago First seen · 20 lines · 22 tokens per session scan A a5960d260eb6

Subscribe to this mod's changes

check-drift is a skill published in the GitHub repository kunalsuri/ai-fication-kit (3 stars, last pushed 5d ago), licensed Apache-2.0. It adds 22 tokens to every session and 229 once invoked, about $0.0001 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.