lists the subagents that were actually used by claude code

search-claude-code-logs.js

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


const d = path.join(os.homedir(), PICK_YOUR_CLAUDE_CODE_DIRECTORY)
const objects = fs.readdirSync(d).map(at => path.join(d, at)).filter(at => at.endsWith('.jsonl')).flatMap(at => {
  return fs.readFileSync(at, 'utf-8').split('\n').flatMap((line, i) => {
    if (!line.trim()) {
      return []
    }
    try {
      return [JSON.parse(line)]
    } catch (e) {
      console.error(`Failed to parse ${at} line ${i+1}: "${line}"`)
      throw e
    }
  })
})
const subagents = objects.flatMap(obj => {
  if (obj.type !== 'assistant') {
    return []
  }
  if (!obj.message) {
    console.log(JSON.stringify(obj, null, 2))
    process.exit(1)
  }
  return [...obj.message.content].flatMap(c => c.type === 'tool_use' && Boolean(c.input.subagent_type) ? [{subagent: c.input.subagent_type, sessionId: obj.sessionId, timestamp: String(obj.timestamp)}] : [String(obj.timestamp)])
})
const timestamps = subagents.map(at => typeof at === 'string' ? at : at.timestamp).sort((lhs, rhs) => lhs.localeCompare(rhs))

const output = subagents.flatMap(at => typeof at === 'string' ? [] : at)
output.sort((lhs, rhs) => lhs.timestamp.localeCompare(rhs.timestamp))
console.log(JSON.stringify([{from: timestamps.at(0)}, ...output, {to: timestamps.at(-1)}], null, 2))