agentmods.dev

SessionStart

A session-start automation that quietly pulls shared Claude Code memory and tries to merge it when a session starts or resumes.

In plain words
What is it for?
It helps synchronize a shared memory store when beginning or resuming work.
Why use it?
It keeps knowledge from other machines available without requiring a manual sync each time.

Hook

84 2mo ago A scan tokens not measured original MIT
View the source file toroleapinc/claude-brain
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/toroleapinc/claude-brain/session-start
Clone the repo
git clone --depth 1 https://github.com/toroleapinc/claude-brain
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 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 3d 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 · 16 lines

What it actually says

{
  "SessionStart": [
    {
      "matcher": "startup|resume",
      "hooks": [
        {
          "type": "command",
          "command": "if [ -f \"${HOME}/.claude/brain-config.json\" ]; then bash \"${CLAUDE_PLUGIN_ROOT}/scripts/pull.sh\" --quiet --auto-merge; fi",
          "timeout": 30,
          "async": true,
          "statusMessage": "Syncing brain..."
        }
      ]
    }
  ]
}
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. 3d ago First seen · 16 lines scan A 7810e6eb91b9

Subscribe to this mod's changes

SessionStart is a hook published in the GitHub repository toroleapinc/claude-brain (84 stars, last pushed 2mo ago), 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 2026-08-30.

Memory and contextai-toolsanthropicclaudeclaude-codeclaude-code-plugincli
Related

Other hooks, from other repositories

SubagentStop

Runs when a subagent finishes, executing subagent-stop-handler.js via node. From Joncik91/ucai.

Joncik91/ucai · not measured

UserPromptSubmit

Runs when you submit a prompt, before the agent sees it, executing pipeline-prompt.sh. From Pierry/harness-kit.

Pierry/harness-kit · not measured

PreCompact

Runs before the context is compacted, executing pre-compact.sh via bash. From awrshift/claude-memory-kit.

awrshift/claude-memory-kit · not measured

SessionStart

Runs when a session starts, executing index-sessions.sh via bash with --recent. From bashiraziz/llm-wiki-template.

bashiraziz/llm-wiki-template · not measured

Stop

Runs when the agent finishes a response, executing dejavu-hook.py via python. From HthSolid/claude-dejavu.

HthSolid/claude-dejavu · not measured

PostToolUse

Runs after a tool call finishes for Task and TodoWrite tool calls, running entire hooks claude-code post-task (2 commands). From liatrio-labs/ai-prompts.

liatrio-labs/ai-prompts · not measured