# Session Query > Query previous pi sessions to retrieve context, decisions, code changes, or other information. Use when you need to look up what happened in a parent session or any other session file. Use when this capability is needed. - Skill: `tomevault-io/session-query` (Agent Skill, multi-file: 2 files) - Install (CLI): `npx skillmds@latest add tomevault-io/session-query` - Raw SKILL.md: https://api.skillmd.com/api/skills/tomevault-io/session-query/raw - Safety review: pending (external: skill-scanner PASS, skillspector PASS) - Works with: Claude Code, Claude.ai, OpenAI Codex - Category: Coding & Dev Tools - Author: tomevault-io (https://skillmd.com/u/tomevault-io) - Updated: 2026-09-17 - Page: https://skillmd.com/skills/tomevault-io/session-query --- # Session Query Query pi session files to retrieve context from past conversations. This skill is automatically invoked in handed-off sessions when you need to look up details from the parent session. ## Usage Use the `session_query` tool: ``` session_query(sessionPath, question) ``` - `sessionPath`: Full path to the session file (provided in the "Parent session:" line) - `question`: Specific question about that session (e.g., "What files were modified?" or "What approach was chosen?") ## Examples ``` session_query("/path/to/session.jsonl", "What files were modified?") session_query("/path/to/session.jsonl", "What approach was chosen for authentication?") session_query("/path/to/session.jsonl", "Summarize the key decisions made") ``` The tool loads the session and uses an LLM to answer your question based on its contents. Ask specific questions for best results. --- > Source: [tomsej/pi-ext](https://github.com/tomsej/pi-ext) — distributed by [TomeVault](https://tomevault.io).