Skill History

Show which skills were invoked during the current Claude Code session.

CRITICAL: Do NOT read the session file directly - it's too large. Use the Bash tool to run grepsession.sh which filters efficiently.

Instructions

1. Use Bash to run grepsession.sh

   ${CLAUDE_PLUGIN_ROOT}/scripts/grepsession.sh '"name":"Skill"'
   

   This outputs matching lines with line numbers from the current session.

2. Parse the output

   Each line is JSONL with this structure:

   {
     "type": "assistant",
     "timestamp": "2025-01-05T09:23:15.123Z",
     "message": {
       "content": [
         {
           "type": "tool_use",
           "name": "Skill",
           "input": {
             "skill": "typescript-development",
             "args": ""
           }
         }
       ]
     }
   }
   

   Extract:

   • Line number: from grep prefix (e.g., 1247:{...})
   • Time: from .timestamp
   • Skill: from .message.content[].input.skill

3. If you need more context

   ${CLAUDE_PLUGIN_ROOT}/scripts/grepsession.sh '"name":"Skill"' -C 5
   

   Or use Read tool with offset/limit on the session file.

4. To find what triggered each skill

   Look for the most recent user message before each skill. User messages have this structure:

   {
     "type": "user",
     "timestamp": "2025-01-05T09:23:00.000Z",
     "message": {
       "content": "fix the type errors in the project"
     }
   }
   

5. Display results

   Format timestamps as relative time (e.g., "3m ago", "1h ago", "2d ago").

   ## Skills Invoked This Session
   
   | Line | When     | Skill              | Triggered By                    |
   |------|----------|--------------------|--------------------------------|
   | 1247 | 2h ago   | typescript-dev     | "fix the type errors in..."    |
   | 1389 | 45m ago  | technical-writing  | "improve the readme..."        |
   
   **Total**: 2 skills invoked
   

Notes

• Users can run grepsession.sh directly and pipe to jq
• Line numbers let you inspect specific parts of the session log
• Use -C N for context, -A N for after, -B N for before