Session Recall

Session Recall

Use local Codex logs instead of claimed model memory. Base the answer only on files found under CODEX_HOME_DIR="${CODEX_HOME:-$HOME/.codex}".

Primary Files

• $CODEX_HOME_DIR/history.jsonl: fastest way to see recent user messages and map them to session_id
• $CODEX_HOME_DIR/session_index.jsonl: thread names and timestamps
• $CODEX_HOME_DIR/sessions/YYYY/MM/DD/*.jsonl: full session transcripts
• $CODEX_HOME_DIR/archived_sessions/*.jsonl: fallback for older moved sessions

Treat config.toml, state_*.sqlite, and logs_*.sqlite as fallback only. Conversation recall should usually come from history.jsonl and sessions/.../*.jsonl.

Quick Workflow

1. Identify the selector the user gave: last, previous, specific date, date plus approximate time, keyword, project path, or session id.
2. Start from history.jsonl to find candidate session_id values and the user's own wording.
3. Open the matching sessions/.../*.jsonl file to reconstruct the conversation.
4. Answer with exact date and time when possible, name the session file used, and summarize only what the logs show.
5. If multiple sessions match, say that and present the nearest 2-3 candidates instead of guessing.

Common Retrieval Patterns

Last or Previous Session

Use:

CODEX_HOME_DIR="${CODEX_HOME:-$HOME/.codex}"
tail -n 40 "$CODEX_HOME_DIR/history.jsonl"
ls -1t "$CODEX_HOME_DIR"/sessions/*/*/*/*.jsonl 2>/dev/null | head -10

If the user asks for the previous session while already in a new chat, do not return the current session. Pick the most recent distinct earlier session_id.

Specific Day

Use the exact calendar date, not relative wording:

CODEX_HOME_DIR="${CODEX_HOME:-$HOME/.codex}"
ls -1 "$CODEX_HOME_DIR/sessions/YYYY/MM/DD"/*.jsonl 2>/dev/null
rg -n 'YYYY-MM-DD|keyword|session_id' "$CODEX_HOME_DIR/history.jsonl"

If the user says "yesterday" or "that day", convert it to an absolute date in the answer.

Approximate Time on a Day

List that day's session files and choose the nearest timestamp:

CODEX_HOME_DIR="${CODEX_HOME:-$HOME/.codex}"
ls -1 "$CODEX_HOME_DIR/sessions/YYYY/MM/DD"/*.jsonl

Then open the closest candidate and verify by reading nearby user messages.

Keyword, Topic, or Project Search

Search both the lightweight index and the full transcripts:

CODEX_HOME_DIR="${CODEX_HOME:-$HOME/.codex}"
rg -n 'CAMvisualD|virtual camera|docker|build|mic' \
  "$CODEX_HOME_DIR/history.jsonl" \
  "$CODEX_HOME_DIR/sessions" \
  "$CODEX_HOME_DIR/archived_sessions"

Prefer the user's own exact phrase first, then broaden the search if needed.

Session ID Search

When a session_id is already known, resolve it directly:

CODEX_HOME_DIR="${CODEX_HOME:-$HOME/.codex}"
find "$CODEX_HOME_DIR/sessions" "$CODEX_HOME_DIR/archived_sessions" \
  -type f -name '*session-id-fragment*.jsonl' 2>/dev/null

Interpretation Rules

• Use history.jsonl for quick mapping, not as the sole source for a full recap.
• Use the session JSONL for the real summary, because it contains assistant actions, tool calls, and final messages.
• Prefer exact dates and times in the response.
• State clearly when an answer is inferred from nearby matches rather than directly proven.
• Do not invent missing context.
• If the logs are absent or incomplete, say what was found and why it is insufficient.

Response Pattern

Keep the answer short and concrete:

1. State which session you found, with exact date and path.
2. Say what was discussed or changed.
3. Mention the main files or actions if they appear in the log.
4. Offer to open that session deeper or continue from that point.

Useful Commands

CODEX_HOME_DIR="${CODEX_HOME:-$HOME/.codex}"
tail -n 40 "$CODEX_HOME_DIR/history.jsonl"
tail -n 20 "$CODEX_HOME_DIR/session_index.jsonl"
ls -1t "$CODEX_HOME_DIR"/sessions/*/*/*/*.jsonl 2>/dev/null | head -10
rg -n 'keyword' "$CODEX_HOME_DIR/history.jsonl" "$CODEX_HOME_DIR/sessions" "$CODEX_HOME_DIR/archived_sessions"
sed -n '1,120p' /path/to/session.jsonl
tail -n 120 /path/to/session.jsonl

Source & license

This open-source skill is cataloged on AgentStack and links to its original source — we do not rehost the code.

• Author: kissrosecicd-hub
• Source: kissrosecicd-hub/agents-evolution
• License: MIT

Install and usage instructions live in the source repository linked above.