Delivery Mirror

Mirror cron/script deliveries into agent session transcripts so scheduled and isolated-cron messages persist in context. Session continuity, no core changes.

A deterministic, no-core-changes helper for the gap between delivering a message and the agent remembering it.

All commands: bash "{baseDir}/scripts/send-mirrored.sh" <flags>

The problem

--command crons and external scripts call openclaw message send … directly. The message reaches the chat — but it bypasses the agent's run loop, so the agent's session JSONL never records it. Next time that agent wakes in the chat/topic, it has no idea the message was ever sent. Classic case: calendar agenda dispatchers and reminder scripts whose sessions run with delivery.mode: none and send via CLI.

Messages delivered through OpenClaw's own delivery layer (agent replies, isolated/cron agentTurn delivery) don't have this problem: that layer passes a mirror context and core calls appendAssistantMessageToSessionTranscript, which writes a delivery-mirror row. A plain openclaw message send from a script passes no mirror context — and the CLI has no flag to set one — so nothing is mirrored. This skill closes that one gap, without touching OpenClaw core.

What it does

1. Sends the message exactly as before (openclaw message send … --json).
2. On success, resolves the owning agent's current session file from agents/<agent>/sessions/sessions.json (.sessionFile — follows compaction rotation).
3. Appends one delivery-mirror assistant row to that transcript — the same shape core produces via appendAssistantMessageToSessionTranscript (provider: "openclaw", model: "delivery-mirror", zeroed usage, stopReason: "stop"), parentId-chained to the last record. It also attaches the openclawDeliveryMirror: {kind:"channel-final"} marker that core adds optionally on real deliveries, with sourceMessageId when the send returns one.
4. Optional idempotency: --idem <key> skips the whole op if that key was already handled (guards against double-delivery on cron retry).

Mirroring is best-effort: if the session can't be resolved, delivery still succeeded and the helper exits 0 with a warning — it never fails a send because of a mirror problem.

Why a skill, not a plugin

A true runtime plugin would mean changing/extending OpenClaw core. This stays a self-contained script you drop next to your other command-cron scripts, so it works on any OpenClaw host and upgrades independently.

Permissions & write scope

This skill performs local filesystem writes and runs the openclaw CLI. Exactly what it touches, and nothing else:

• Reads: <openclaw-home>/agents/<agent>/sessions/sessions.json — only to resolve the target session's sessionFile.
• Appends (never edits or deletes): one JSONL line to that sessionFile — the agent's own transcript.
• Writes: idempotency state …/delivery-mirror/state/<agent>.seen, a log …/delivery-mirror/mirror.log, and advisory lock files (*.mirror.lock, <agent>.seen.lock).
• Executes: openclaw message send to deliver the message.
• Does NOT: make network calls of its own, run any model, read ambient environment for data (all inputs come from this script's flags and are passed to the embedded Python as positional argv, not env), or modify/delete any existing transcript record.

--openclaw-home confines every path above — point it at a scratch dir to dry-run safely. Treat the caller (your cron/script) as the trust source: message text is stored verbatim. Full threat model in SECURITY.md.

Usage

bash

scripts/send-mirrored.sh \
  --agent ula \                       # agent id that owns the session (sessions dir)
  --account ula \                     # channel account for send (defaults to --agent)
  --to -1003971971641 \               # telegram chat id
  --thread-id 131 \                   # telegram forum topic (omit for non-forum)
  --source agenda-dispatch \          # label for logs / tracing
  --idem "agenda:131:$(date +%F):morning" \  # optional dedupe key
  --message "$MSG"

Message input: --message "…", --message-file PATH, or --message-file - (stdin).

In a --command cron

Replace a bare openclaw message send … with:

bash

/home/opc/.openclaw/skills/delivery-mirror/scripts/send-mirrored.sh \
  --agent ula --account ula --to -1003971971641 --thread-id 131 \
  --source agenda-dispatch --message "$MSG"

Flags

flag	meaning
--message / --message-file	message text (file or - for stdin)
--to	channel target (telegram chat id) — required
--agent	agent id owning the session — required
--account	channel account id for send (default: --agent)
--channel	channel (default telegram)
--thread-id	telegram forum topic id
--session-key	explicit session key (else auto-resolved)
--source	label recorded in the helper log (not in the row)
--idem	idempotency key; skip if already handled (exit 3)
--openclaw-home	OpenClaw home (default $OPENCLAW_HOME or ~/.openclaw)
--openclaw-bin	openclaw binary (default openclaw on PATH)
--dry-run	print the plan, do nothing
--no-send	mirror only (testing)
--no-mirror	send only (= plain send)

Exit codes

code	meaning
0	delivered (mirrored, or mirror skipped best-effort with warning)
2	bad usage / missing required args
3	idempotency: --idem key already handled, nothing done
4	send failed (nothing mirrored)

Session resolution

The helper finds the transcript by, in order: explicit --session-key; auto-constructed key (agent:<agent>:<channel>:group:<to>:topic:<thread>, then :group:<to>, then :direct:<to>); finally a scan of sessions.json matching deliveryContext.to / route.target.to (substring on --to) + thread id. It always appends to the entry's sessionFile, so it follows compaction rotation automatically.

Caveats (read before trusting it blindly)

• It reproduces a core row from bash. The delivery-mirror row is a first-class core concept (written by appendAssistantMessageToSessionTranscript, matched by core's isDeliveryMirror predicate, which keys only on provider+model). The coupling is only that we hand-append the JSONL instead of calling that internal function — no CLI or tool exposes it. We reproduce core's usage shape and attach the optional openclawDeliveryMirror marker; the append is newline-safe; re-verify after a major OpenClaw upgrade. --source is recorded only in the helper's log, not in the row.
• Concurrency. Appends are serialized with flock on <sessionFile>.mirror.lock. The gateway may not take that lock, so avoid mirroring into a topic while its agent is actively mid-run; dispatcher-style schedules (agent idle) are the safe, intended case.
• State. Idempotency keys live in <openclaw-home>/delivery-mirror/state/<agent>.seen; log in <openclaw-home>/delivery-mirror/mirror.log.

Test

bash

scripts/send-mirrored.sh --dry-run  --agent X --to <chat> --thread-id <t> --message "hi"
scripts/send-mirrored.sh --no-send  --agent X --to <chat> --thread-id <t> --message "hi"  # mirror only