ClawHub

Session Distiller

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Batch-distill completed and live OpenClaw session transcripts into structured daily memory files. Two components: distill.py (batch + live session distillation, Granola meeting note distillation, Captain's Log ingestion) and context-gate.py (context usage monitor with auto-distill). Use when: (1) distilling closed session transcripts to memory, (2) running live distill-in-place for approved group chats, (3) monitoring context usage and auto-gating sessions approaching limits, (4) ingesting meeting notes into daily memory files (--meeting-notes / --granola), (5) ingesting daily log AM/PM files into daily memory files (--daily-log / --captains-log). NOT for: real-time memory flush (handled by OpenClaw compaction), vector store ingestion, or manual memory file editing.

Install

openclaw skills install session-distiller

session-distiller

Batch-process OpenClaw session transcripts into structured daily memory files (memory/YYYY-MM-DD.md). Ensures no session knowledge is lost — even from short conversations that end before the real-time memory flush threshold.

Platform: macOS. Reads from ~/.openclaw/agents/main/sessions/. Requires trash CLI.

Components

ScriptPurpose
scripts/distill.pyBatch distill closed sessions + live distill-in-place for approved group chats
scripts/context-gate.pyPoll context usage, warn at threshold, auto-distill + alert at hard gate

Prerequisites

  • Python 3.8+
  • LiteLLM proxy running at http://localhost:4000 (used for LLM distillation calls)
  • trash CLI (brew install trash) — safe file removal to macOS Trash
  • OpenClaw gateway running (for context-gate.py status polling)

distill.py Usage

# Batch: dry-run preview of closed sessions
python3 scripts/distill.py --dry-run

# Batch: process all eligible closed sessions (default: 24h+ old)
python3 scripts/distill.py

# Batch: keep source files after distilling
python3 scripts/distill.py --no-trash

# Batch: process a specific session file
python3 scripts/distill.py --file <path-to-session.jsonl>

# Batch: change minimum age threshold
python3 scripts/distill.py --min-age-hours 48

# Live: distill all approved group chat sessions
python3 scripts/distill.py --live [--dry-run]

# Live: distill a specific session by UUID
python3 scripts/distill.py --live-session <session-id> [--dry-run]

# Meeting notes: distill into daily memory files (preferred)
python3 scripts/distill.py --meeting-notes [--dry-run] [--limit N] [--trash]

# Meeting notes: deprecated alias (emits deprecation warning)
python3 scripts/distill.py --granola [--dry-run] [--limit N] [--trash]

# Daily log: ingest AM/PM files into daily memory files (preferred)
python3 scripts/distill.py --daily-log [--dry-run] [--limit N]

# Daily log: deprecated alias (emits deprecation warning)
python3 scripts/distill.py --captains-log [--dry-run] [--limit N]

# Version
python3 scripts/distill.py --version

context-gate.py Usage

# Live run — polls gateway, sends Telegram alerts
python3 scripts/context-gate.py

# Dry run — logs what would happen, no alerts sent
python3 scripts/context-gate.py --dry-run

# Version
python3 scripts/context-gate.py --version

Environment Variables

VariableDefaultDescription
CONTEXT_WARN_PCT40Advisory warning threshold (%)
CONTEXT_HARD_PCT60Hard gate threshold — triggers auto-distill (%)
BOT_TOKEN(empty)Telegram bot token (required for alerts)
CHAT_ID(empty)Telegram chat ID for alerts (required for alerts)

Configuration

Live Allowlist (LIVE_ALLOWLIST_KEYS)

In scripts/distill.py, the LIVE_ALLOWLIST_KEYS dict controls which sessions get live distill-in-place. Keys are session keys from sessions.json (stable across UUID rotations). Add entries as:

LIVE_ALLOWLIST_KEYS = {
    "agent:main:telegram:group:-5166698025": "Claw & Order",
}

Key Paths

PathPurpose
~/.openclaw/agents/main/sessions/Source session JSONL files
~/.openclaw/agents/main/sessions/sessions.jsonSession key → UUID index
~/.openclaw/workspace/memory/Output daily memory files
prompts/distill.txtLLM distillation prompt template
offsets.jsonLive session offset tracker (runtime state, auto-created)
gate-state.jsonContext gate per-session state (runtime state, auto-created)

LiteLLM Endpoint

Distillation calls go to http://localhost:4000/v1/chat/completions with model claude-opus-4-6. Change the model or endpoint in the distill_transcript() function if needed.

Scheduling

Batch Distill (distill.py)

Daily at 03:00 CST via OpenClaw cron. Runs as a sub-agent in an isolated session.

Known issue: The 03:00 cron has a 600s timeout. With ~44 sessions × LLM calls, it times out (5 consecutive errors observed). Mitigations: run with --min-age-hours 48 to reduce batch size, or split into multiple cron runs.

Context Gate (context-gate.py)

Every 5 minutes, 07:00–22:00 via shell crontab:

*/5 7-22 * * *  /Users/<your-name>/.openclaw/scripts/cron-context-gate.sh

References

  • ROADMAP.md — Future ideas, known issues, Phase 4 community release plans

Changelog

v0.5.1 — 2026-03-17

Hotfix: removed runtime state files from repo and added .gitignore.

  • Added .gitignore covering offsets.json, gate-state.json, captains-log-ingested.json, granola-ingested.json
  • Removed state files from git tracking (git rm --cached)

v0.5.0 — 2026-03-17

Configurable paths + flag aliases + de-identification.

  • Added configurable paths constants block (MEETING_NOTES_DIR, DAILY_LOG_DIR, DAILY_LOG_PATTERN, MEMORY_DIR) — override via env vars without editing the script
  • Added --meeting-notes flag as the preferred replacement for --granola
  • Added --daily-log flag as the preferred replacement for --captains-log
  • --granola and --captains-log still work but now emit a deprecation warning to stderr
  • Removed deployment-specific identifiers from docs (SKILL.md, ROADMAP.md); replace <your-name> / <your-repo> with your own values
  • Bumped __version__ to 0.5.0

v0.4.1 — 2026-03-15

Behavior change: --captains-log mode now moves source files to memory/captains-log/ingested/ after successful ingestion (default cleanup, consistent with --granola mode).

  • Added --no-move flag to preserve source files in place
  • Added --trash flag to trash instead of move
  • memory/ is now clean after ingestion — no redundant duplicate files
  • Backfill: existing pre-ingested source files moved to ingested/ on first run

v0.4.0 — 2026-03-14

New feature: Captain's Log AM/PM ingestion (--captains-log mode, closes #7).

  • --captains-log flag scans memory/ for captains-log-YYYY-MM-DD-am.md and captains-log-YYYY-MM-DD-pm.md files
  • No LLM call — logs are already structured summaries, appended as-is
  • AM ingested before PM for same date (chronological order guaranteed)
  • Appends ## Captain's Log — AM (Morning Watch) / ## Captain's Log — PM (Dog Watch) sections
  • captains-log-ingested.json sidecar for idempotent re-runs
  • Source files preserved — not moved or trashed (reference artifacts)
  • --limit N supported for backlog processing
  • Completes the daily LTM pipeline: AM log → Granola meetings → PM log → session distillations

v0.3.1 — 2026-03-14

New feature: Granola meeting note distillation (--granola mode, closes #4).

  • --granola flag scans memory/granola/ and distills un-ingested meeting notes into their corresponding memory/YYYY-MM-DD.md daily files
  • Dedicated prompt file prompts/distill-granola.txt tuned for already-summarized meeting notes (extraction focus vs. summarization)
  • granola-ingested.json sidecar tracks ingested UUIDs — idempotent on re-runs
  • UUID dedup against target daily file (same logic as session distillation)
  • Source files moved to memory/granola/ingested/ on success (safe default)
  • --trash flag to trash instead of move to ingested/
  • --limit N to cap batch size (recommended for large backlogs)
  • _transcript.md files skipped by default
  • Appends ## Granola — {title} ({uuid8}) sections to daily files
  • Creates daily file if none exists for that date
  • First run processed 130 candidates: 76 distilled, 20 skipped, 6 NO_DISTILL

v0.2.0 — 2026-03-12

BREAKING CHANGE (OpenClaw 2026.3.11): Gateway API no longer populates totalTokens, remainingTokens, or percentUsed for live sessions. context-gate.py was completely blind as a result.

Fix: JSONL fallback added to context-gate.py. When API fields are null, gate reads session file on disk, counts message chars, estimates tokens at chars÷4. Token source tagged in log output ([api], [api:inputTokens], or [jsonl-estimate]). Gate will auto-switch back to API source when upstream fixes the regression.

Also fixed: distill.py script path in Session Distiller cron was pointing to old projects/session-distiller/distill.py location — updated to skills/session-distiller/scripts/distill.py. This was causing 5 consecutive cron failures.

Other changes:

  • Cron timeout increased 600s → 1800s
  • ROADMAP.md updated with known issue entry for token count regression

Upstream issue status (2026-03-14): OpenClaw upstream addressed the token count issue at the display layer only (openclaw/openclaw #43987, #45268). The underlying API fields (totalTokens, remainingTokens, percentUsed) remain null as of 2026.3.13. The JSONL fallback introduced in v0.2.0 is the permanent workaround. See ROADMAP.md and /session-distiller #5 for details.

v0.1.0 — 2026-03-11

Initial skill packaging of session-distiller project. Converted from projects/session-distiller/ to structured OpenClaw skill. No functional logic changes. Added --version flags to both scripts. Removed hardcoded credentials from context-gate.py (now requires BOT_TOKEN/CHAT_ID env vars). Adjusted relative paths for new scripts/ directory layout.