agentmods.dev

PreToolUse

An automatic step that runs before the agent uses Write, Edit, or MultiEdit, and executes a Python script named architecture.py.

In plain words
What is it for?
It is for projects that want to process file-edit operations with architecture.py before those edits happen.
Why use it?
It lets a project perform an architecture-related check or action before files are changed.

Hook

1 5mo ago A scan tokens not measured no licence
View the source file psreek-ai/codebase-mooc
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 hooks/psreek-ai/codebase-mooc/pre-tool-use
Clone the repo
git clone --depth 1 https://github.com/psreek-ai/codebase-mooc
Per session not measured What this adds to a session before it is invoked.
When invoked not measured Not applicable: nothing here is loaded into a session.
Security scan A 0 findings. Scan, not verified.
Origin unknown No closer match found in the catalogue.
Security

Grade A, and why

PreToolUse 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 2d ago.

A static scan of the commands this hook runs, not an audit. A hook is shell that executes on your machine at the event it names, which is why every command in it is printed with what was found.

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.

hooks/hooks.json · 13 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 · 13 lines scan A b0085700ce0a

Subscribe to this mod's changes

PreToolUse is a hook published in the GitHub repository psreek-ai/codebase-mooc (1 stars, last pushed 5mo ago), with no licence file. Its token cost is not measured: a hook is shell that never enters the context. 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.

LanguagesPlanningWriting and docsclaude-codeclaude-code-plugindeveloper-educationdocumentationmooconboarding
Related

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Runs when a session starts on startup, running an inline shell check. From nicholasglazer/gnosis-mcp.

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PreToolUse

Runs before the agent uses a tool for Edit tool calls, running echo 'REMINDER: Did you Read this file in the current contex. From kaltura/kaltura-agents-api-guides.

kaltura/kaltura-agents-api-guides · not measured

Stop

Runs when the agent finishes a response, executing stop_nudge.py via python3. From jx-hxxx/hi-vibe.

jx-hxxx/hi-vibe · not measured

PreToolUse

Runs before the agent uses a tool for Bash, Bash, Write, Edit and MultiEdit tool calls, executing dispatch.py and before_write.py via python3 (2 commands). From WangChangxin0809/repo-agent-harness.

WangChangxin0809/repo-agent-harness · not measured

SessionStart

Runs when a session starts, executing session_brief.py via python3. From bestcow/dear-agent.

bestcow/dear-agent · not measured

SessionStart

Runs when a session starts, executing inject-instructions.mjs via node. From geml-spec/geml.

geml-spec/geml · not measured