catch-drift

A command that finds differences between a project's written specifications and its actual code, then brings them back into agreement.

In plain words
What is it for?
Use it when requirements have changed, code has evolved, or you suspect the project has drifted from its specifications.
Why use it?
It helps prevent the documentation and implementation from describing different behavior.

Command for Claude Code

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 commands/adrianrogowski/auto-sdd/catch-drift
Clone the repo
git clone --depth 1 https://github.com/AdrianRogowski/auto-sdd

Made for: Claude Code.

Per session 0 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 1,923 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. Scan, not verified.
Origin unknown 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 $0.00000 $0.01923
Opus 5 $0.00000 $0.00962
Sonnet 5 $0.00000 $0.00385
Haiku 4.5 $0.00000 $0.00192

Measured 3d ago against content hash 9bb3c1b8afc3, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

catch-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 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.

.claude/commands/catch-drift.md · 275 lines

The source is not reproduced here

No licence file

A repository with no LICENSE is all rights reserved by default, so the body is not copied here. The metadata, the measurements and the link are.

Read it on GitHub

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 · 275 lines · 0 tokens per session scan A 9bb3c1b8afc3

Subscribe to this mod's changes

catch-drift is a command published in the GitHub repository AdrianRogowski/auto-sdd (13 stars, last pushed 8d ago), with no licence file. It costs nothing until one of its globs matches a file; then it loads 1,923 tokens. 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.