agentmods.dev

SessionStart

A session-start hook that runs four vouch commands when a coding session begins. Hooks are automatic commands triggered by events such as starting a session.

In plain words
What is it for?
Finalizing old capture buffers, checking vouch status, showing its banner, and recalling stored knowledge at session startup.
Why use it?
It restores relevant vouch state and handles unfinished session records without requiring manual commands.

Hook for Claude Code

92 9d ago A scan tokens not measured original MIT
View the source file vouchdev/vouch
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/vouchdev/vouch/session-start
Clone the repo
git clone --depth 1 https://github.com/vouchdev/vouch

Made for: Claude Code.

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 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.

adapters/claude-code/.claude/settings.json · 26 lines

What it actually says

{
  "SessionStart": [
    {
      "comment": "finalize old buffers from previous sessions; current session will be finalized here too on next session start (fallback: windowclose event not yet supported by claude-code extension)",
      "matcher": "*",
      "hooks": [
        {
          "type": "command",
          "command": "vouch capture finalize-all || true"
        },
        {
          "type": "command",
          "command": "vouch status --json || true"
        },
        {
          "type": "command",
          "command": "vouch capture banner || true"
        },
        {
          "type": "command",
          "command": "vouch recall || true"
        }
      ]
    }
  ]
}
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 · 26 lines scan A f5e7b83aa5f5

Subscribe to this mod's changes

SessionStart is a hook published in the GitHub repository vouchdev/vouch (92 stars, last pushed 9d 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 contextaiai-brainassistantpersonalvibe-codingvouch
Related

Other hooks, from other repositories

SessionStart

Runs when a session starts on startup, running an inline shell check. From openclaw/openclaw.

openclaw/openclaw · not measured

PostToolUse

Runs after a tool call finishes for Edit, Write and MultiEdit tool calls, executing design-lint.mjs. From istota-project/istota.

istota-project/istota · not measured

PreToolUse

Runs before the agent uses a tool for Edit, Write, Grep, Glob, Bash, Edit, Write, NotebookEdit and Bash tool calls, executing spec-hint.js, module-hint.js and docs-hint.js via node (3 commands). From kaanozhan/Frame.

kaanozhan/Frame · not measured

PreToolUse

Runs before the agent uses a tool for Write, Edit, Bash, Agent, Task, SendMessage and TaskStop tool calls, running bash (3 commands). From modu-ai/moai-adk.

modu-ai/moai-adk · not measured

SessionStart

Runs when a session starts, executing docs-hint.js via node. From kaanozhan/Frame.

kaanozhan/Frame · not measured

SubagentStop

Runs when a subagent finishes, running bash (2 commands). From modu-ai/moai-adk.

modu-ai/moai-adk · not measured