extract

A command that identifies recurring design patterns in an existing codebase and saves them to Subcog memory. Design patterns are repeated approaches to solving common code-structure problems.

In plain words
What is it for?
Use it to examine an existing project, record its design patterns, and store those findings in Subcog.
Why use it?
It preserves useful knowledge about how the codebase is built, so it can be recalled later instead of rediscovered.

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/zircote-plugins/aesth/extract
Clone the repo
git clone --depth 1 https://github.com/zircote-plugins/aesth

Made for: Claude Code.

Per session 17 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 1,705 The whole file, excluding the scripts and references it only reads on demand.
Security scan B 1 finding. 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 $0.00017 $0.01705
Opus 5 $0.00009 $0.00852
Sonnet 5 $0.00003 $0.00341
Haiku 4.5 $0.00002 $0.00170

Measured 2d ago against content hash 99ff00c1ae19, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade B, and why

extract scanned grade B with 1 finding 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 2d 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.

Reads agent configuration directoriesmediumAgent snooping

.claude/, .codex/, .gemini/ hold keys, settings and other credentials a mod has no legitimate need for.

cat > ~/.claude/mnemonic/default/learnings/user/${UUID}-extraction-insight.memory.md << 'MEMORY'
.claude/commands/extract.md · 220 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. 2d ago First seen · 220 lines · 17 tokens per session scan B 99ff00c1ae19

Subscribe to this mod's changes

extract is a command published in the GitHub repository zircote-plugins/aesth (2 stars, last pushed 2mo ago), with no licence file. It adds 17 tokens to every session and 1,705 once invoked, about $0.0001 per session on Opus 5. A static security scan graded it B with 1 finding (reads agent configuration directories). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-31.