ClaudeSuperPower
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SessionStart

Hook
0Other

Fires on

SessionStart

Once, as a session begins — before you type anything.

Where this sits in a session

  1. Session start→
  2. Prompt submitted→
  3. Prompt expansion→
  4. Before tool use→
  5. After tool use→
  6. Notification→
  7. Before compaction→
  8. Subagent finished→
  9. Turn finished→
  10. Session end

Observes only — Emits messages or context. It never returns a permission decision.

What it runs

Executed automatically when the event fires — no prompt, no confirmation.

command· timeout 5s
node "${CLAUDE_PLUGIN_ROOT}/scripts/hooks/inject-skill-context.js"
command· timeout 5s
node "${CLAUDE_PLUGIN_ROOT}/scripts/hooks/init-data-dir.js"
command· timeout 5s
node "${CLAUDE_PLUGIN_ROOT}/scripts/hooks/capture-model.js"

Install it yourself

Paste into .claude/settings.json to run this hook without installing the whole plugin. Adjust the paths to point at your own copy of the scripts.

settings.json
{
  "hooks": {
    "SessionStart": [
      {
        "hooks": [
          {
            "type": "command",
            "command": "node \"${CLAUDE_PLUGIN_ROOT}/scripts/hooks/inject-skill-context.js\"",
            "timeout": 5
          },
          {
            "type": "command",
            "command": "node \"${CLAUDE_PLUGIN_ROOT}/scripts/hooks/init-data-dir.js\"",
            "timeout": 5
          },
          {
            "type": "command",
            "command": "node \"${CLAUDE_PLUGIN_ROOT}/scripts/hooks/capture-model.js\"",
            "timeout": 5
          }
        ]
      }
    ]
  }
}

Source (3 files)

Read this before installing — it runs on your machine with your permissions.

#!/usr/bin/env node
/**
 * SessionStart hook: surface the carta-crm plugin name + version to the session.
 *
 * Emits a <carta-plugin name="..." version="..." /> tag into every session's
 * context so the running plugin/version is attributable, matching
 * carta-cap-table and carta-investors.
 *
 * Part of the official Carta AI Agent Plugin.
 */

const fs = require('fs');
const path = require('path');

// Read plugin name + version from the plugin manifest.
let pluginName = 'carta-crm';
let pluginVersion = 'unknown';
try {
    const pluginJson = JSON.parse(fs.readFileSync(path.resolve(__dirname, '../../.claude-plugin/plugin.json'), 'utf8'));
    pluginName = pluginJson.name || pluginName;
    pluginVersion = pluginJson.version || 'unknown';
} catch {}

let inputData = '';
process.stdin.on('data', chunk => (inputData += chunk));

process.stdin.on('end', () => {
    let hookEventName = 'SessionStart';
    try {
        const input = JSON.parse(inputData);
        hookEventName = input.hook_event_name || hookEventName;
    } catch {}

    const output = {
        hookSpecificOutput: {
            hookEventName,
            additionalContext: `<carta-plugin name="${pluginName}" version="${pluginVersion}" />`,
        },
    };

    process.stdout.write(JSON.stringify(output));
    process.exit(0);
});

Shipped by 1 plugin

Installing any of these installs this hook.

carta-crm11

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