agentmods.dev

SessionStart

A group of scripts that runs when a coding-agent session starts. A session is one period of work from opening or starting the agent until it ends.

In plain words
What is it for?
Use it to load context, preserve Kitty environment settings, update freshness data, and apply settings when a session opens.
Why use it?
It prepares session context and settings before work begins, and can repair or load parts of the agent environment.

Hook

12 6d ago B scan tokens not measured no licence
View the source file DorShaer/Husk
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/dorshaer/husk/session-start
Clone the repo
git clone --depth 1 https://github.com/DorShaer/Husk
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 B 1 finding. Scan, not verified.
Origin unknown No closer match found in the catalogue.
Security

Grade B, and why

SessionStart 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 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.

Reads agent configuration directoriesmediumAgent snooping

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

"command": "bun $HOME/.claude/LIFEOS/TOOLS/SettingsBackport.ts; bun $HOME/.claude/LIFEOS/TOOLS/MergeSettings.ts --system $HOME/.claude/settings.system.json --user $HOME/.claude/LIFEOS/USER/CONFIG/settings.user.json --out
libs/lifeos/hooks/hooks.json · 33 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 · 33 lines scan B 714051ef5046

Subscribe to this mod's changes

SessionStart is a hook published in the GitHub repository DorShaer/Husk (12 stars, last pushed 6d 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 B with 1 finding (reads agent configuration directories). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.

agentsai-agentsaiderautomationclaude-codecodex-cli
Related

Other hooks, from other repositories

PreToolUse

Runs before the agent uses a tool for Bash tool calls, executing strict-external-actions.sh (7 commands). From tdwhere123/do-it.

tdwhere123/do-it · not measured

PostToolUse

Runs after a tool call finishes for Edit, Write, MultiEdit and NotebookEdit tool calls, executing write-quality-lint.sh. From tdwhere123/do-it.

tdwhere123/do-it · not measured

Stop

Runs when the agent finishes a response, executing verification-gate.sh. From tdwhere123/do-it.

tdwhere123/do-it · not measured

PreToolUse

Runs before the agent uses a tool for Bash tool calls, executing pre-tool-use.sh and pre_tool_policy.py via sh with --show-toplevel (2 commands). From 45ck/open-genome-agent.

45ck/open-genome-agent · not measured

Stop

Runs when the agent finishes a response, executing validate_stop.py via python3 with --show-toplevel. From 45ck/open-genome-agent.

45ck/open-genome-agent · not measured

PreToolUse

Runs before the agent uses a tool for Bash tool calls, executing require-review.rb. From LandonSchropp/agent-toolkit.

LandonSchropp/agent-toolkit · not measured