agentmods.dev

SessionStart

A startup hook that runs a Node.js session-start script when a coding session begins.

In plain words
What is it for?
Running setup or initialization tasks automatically at session startup.
Why use it?
It removes the need to start that script manually each time a session opens.

Hook

1 1mo ago A scan tokens not measured no licence
View the source file orkait/hyperstack
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/orkait/hyperstack/session-start
Clone the repo
git clone --depth 1 https://github.com/orkait/hyperstack
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

SessionStart 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 today.

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 · 14 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. today First seen · 14 lines scan A ca47a577572c

Subscribe to this mod's changes

SessionStart is a hook published in the GitHub repository orkait/hyperstack (1 stars, last pushed 1mo 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.

FrontendLanguagesadversarial-aiai-agentdeveloper-toolsmcpreact-flowtypescript
Related

Other hooks, from other repositories

SessionStart

Runs when a session starts, running ana _capture. From anatomia-dev/anatomia.

anatomia-dev/anatomia · not measured

PreToolUse

Runs before the agent uses a tool for Write and Edit tool calls, executing warn-missing-jsdoc.sh via bash. From pau-vega/Devkit-AI.

pau-vega/Devkit-AI · not measured

SubagentStop

Runs when a subagent finishes, executing log-hook-event.ts via node. From sushichan044/cc-hooks-ts.

sushichan044/cc-hooks-ts · not measured

TaskCompleted

Runs when a task is marked completed, executing log-hook-event.ts via node. From sushichan044/cc-hooks-ts.

sushichan044/cc-hooks-ts · not measured

SessionStart

Runs when a session starts, executing codinfy-agent-monitor.js via node. From bakalagoin/codinfy-agent-monitor.

bakalagoin/codinfy-agent-monitor · not measured

Stop

Runs when the agent finishes a response, executing completion-gate.sh. From Mink16/xserver-mcp.

Mink16/xserver-mcp · not measured