Summary

MemPalace normalizes 6 chat export formats in normalize.py:

• Claude AI JSON
• ChatGPT conversations.json
• Claude Code JSONL
• OpenAI Codex CLI JSONL (added recently via PR feat: add OpenAI Codex CLI JSONL normalizer #61)
• Slack JSON
• Plain text

PR #155 (in review) adds Gemini CLI JSON. PR #169 (in review) adds Pi agent JSONL. PR #172 (in review) adds Aider markdown. PR #23 adds OpenCode SQLite (in review). There's no support yet for several other widely-used AI coding tools.

Candidate formats

Pi session format (from @tunnckoCore)

• Path: ~/.config/pi/agent/sessions/{encoded-cwd}/{timestamp}_{uuid}.jsonl
• Folder naming: CWD path with / replaced by -, wrapped in --, e.g. --home-arcka-openclaude--
• File naming: {ISO-timestamp}_{uuid}.jsonl
• JSONL types: session (header), model_change, thinking_level_change, message, toolCall, compaction, branch_summary, label, custom
• Messages: {"type":"message", "message":{"role":"user"|"assistant"|"toolResult", "content":[{"type":"text","text":"..."}]}}
• Docs: session.md

Gemini CLI session format

• Path: ~/.gemini/tmp/{project_hash}/chats/session-{timestamp}-{id}.json
• Single JSON file (not JSONL) with sessionId, projectHash, messages array
• User messages: type: "user", content as list of {"text": "..."} blocks (no "type" key)
• Assistant messages: type: "gemini", content as plain string
• Project-scoped: sessions stored under a hash of the working directory

Why this matters

Users who switch between AI tools (or use multiple) lose cross-tool context. Mining sessions from all tools into the same palace would let MemPalace serve as a unified memory layer across the entire AI-assisted development workflow.

Implementation notes

• Each format would be a new _try_* parser in normalize.py, following the existing pattern
• The normalize() function already auto-detects format — new parsers slot in naturally
• SQLite-based formats (Cursor, Copilot) would need a light read layer similar to PR feat: add OpenCode SQLite session database support #23's OpenCode approach

Prior art in this repo

• _try_claude_ai_json, _try_chatgpt_json, _try_claude_code_jsonl, _try_codex_jsonl, _try_pi_jsonl, _try_gemini_json, _try_aider_md, _try_slack_json — existing/proposed parsers
• PR feat: add OpenCode SQLite session database support #23 — OpenCode SQLite sessions (in review)
• PR feat: add OpenAI Codex CLI JSONL normalizer #61 — Codex CLI JSONL (merged)
• PR feat: add Gemini CLI session JSON normalizer #155 — Gemini CLI JSON (in review)
• PR feat: add Pi agent JSONL session normalizer #169 — Pi agent JSONL (in review)
• PR feat: add Aider chat history markdown normalizer #172 — Aider markdown (in review, by @mvanhorn)
• PR feat: add OpenAI Codex CLI JSONL normalizer #5 — Codex CLI JSONL (self-closed by author as "not ready", superseded by feat: add OpenAI Codex CLI JSONL normalizer #61)