SessionStart

SessionStart is a hook for Claude Code from moorcheh-ai/memanto. Its token cost is not measured, scanned A, original, MIT.

An automatic action that runs when an agent session starts or resumes. It runs a session-start Python script.

In plain words
What is it for?
Use it to run initialization work when a new session opens or an existing session resumes.
Why use it?
It ensures the session-start setup happens consistently without a manual command.

Hook for Claude Code

Written for Claude Code: ${CLAUDE_PLUGIN_ROOT} variable.

Runs only inside a plugin — its command needs a path that Claude Code sets for a plugin’s own hooks and for nothing else, and the catalogue could not identify which plugin ships it.

One of 3 entries in hooks.json — they are configured in one file and arrive together.

Good fit Use it to run initialization work when a new session opens or…

Compare 6 hooks from other repositories ↓
About the project

Memanto is a companion memory agent that manages what other AI agents remember, including durable facts, preferences, conflicts, stale information, and which agents should receive updates. It is for teams running multiple agents that need coordinated memory across conversations, platforms, and storage systems.

moorcheh-ai/memanto · 1,859 stars · on GitHub · memanto.ai

Install

Getting it into your agent

There is no command for this one: it runs only inside a plugin, and the catalogue could not identify which plugin ships it. The source is linked below.

Made for: Claude Code.

Wrote this? Show the measurements

A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.

agentmods badge for SessionStart

README.md
[![agentmods](https://agentmods.dev/badge/hooks/moorcheh-ai/memanto/session-start.svg)](https://agentmods.dev/hooks/moorcheh-ai/memanto/session-start)
Your own site
<a href="https://agentmods.dev/hooks/moorcheh-ai/memanto/session-start"><img src="https://agentmods.dev/badge/hooks/moorcheh-ai/memanto/session-start.svg" alt="Measured on agentmods" height="20"></a>
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. A grade says what 26 rules found in the file — not that it is safe.
Origin original 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 yesterday.

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.

Origin

Copies of this mod

2 near-identical copies found in the catalogue:

memanto/cli/connect/assets/hooks/hooks.json · 19 lines

What it actually says

{
  "SessionStart": [
    {
      "matcher": "startup|resume",
      "hooks": [
        {
          "type": "command",
          "command": "python \"${CLAUDE_PLUGIN_ROOT}/hooks/session_start.py\"",
          "timeout": 30
        },
        {
          "type": "command",
          "command": "python3 \"${CLAUDE_PLUGIN_ROOT}/hooks/session_start.py\"",
          "timeout": 30
        }
      ]
    }
  ]
}
Same file

What else hooks.json configures

This page is one entry in a file that holds 3. Installing the file brings all of them; each is measured and scanned on its own page.

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. yesterday First seen · 19 lines scan A dc9bcbc28b2f

Subscribe to this mod's changes

SessionStart is a hook published in the GitHub repository moorcheh-ai/memanto (1,859 stars, last pushed yesterday), licensed MIT. 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 2026-09-05.