shield_lock
JinDaGe
← Back to skills
extension
Category: Content & MediaNo API key required

claude-code-task

Run Claude Code tasks in background with automatic result delivery. Use for coding tasks, research in codebase, file generation, complex automations. Zero OpenClaw tokens while Claude Code works.

personAuthor: jakexiaohubgithub
open_in_newRepositorydownloadDownload package

Claude Code Task (Async)

Run Claude Code in background — zero OpenClaw tokens while it works. Results delivered to WhatsApp or Telegram automatically.

Important: Claude Code = General AI Agent

Claude Code is NOT just a coding tool. It's a full-powered AI agent with web search, file access, and deep reasoning. Use it for ANY complex task:

  • Research — web search, synthesis, competitive analysis, user experience reports
  • Coding — create tools, scripts, APIs, refactor codebases
  • Analysis — read and analyze files, data, logs, source code
  • Content — write docs, presentations, reports, summaries
  • Automations — complex multi-step workflows with file system access

Give it prompts the same way you'd talk to a smart human — natural language, focused on WHAT you need, not HOW to do it.

NOT for:

  • Quick questions (just answer directly)
  • Tasks needing real-time interaction

Quick Start

Telegram Thread Safety (must-follow)

For Telegram thread runs, run-task.py is designed to either route correctly or fail immediately.

Mandatory step before launch

Resolve the current runtime session key first (source of truth), then launch with it.

  • Get current key via sessions_list (or existing runtime context)
  • If key is agent:main:main:thread:<THREAD_ID> → use it directly in --session
  • Never derive --session from chat_id/sender id heuristics

Rules

  • Use only --session "agent:main:main:thread:<THREAD_ID>" for thread tasks
  • Never use agent:main:telegram:user:<id> for thread tasks
  • If routing metadata is inconsistent (thread/session UUID/target mismatch), script exits with ❌ Invalid routing
  • Default mode is --telegram-routing-mode auto:
    • allows non-thread Telegram for setups without thread sessions
    • blocks ambiguous user-scope session key (agent:main:telegram:user:<id>) unless explicitly forced
    • blocks non-thread launch if a recent thread session exists for same target (likely misroute)
  • Force strict thread-only behavior with --telegram-routing-mode thread-only
  • Force non-thread behavior with --telegram-routing-mode allow-non-thread or --allow-main-telegram

This is intentional: abort fast > silent misroute.

⚠️ ALWAYS launch via nohup — exec timeout (2 min) will kill the process!

⚠️ NEVER put the task text directly in the shell command — quotes, special characters, and newlines WILL break argument parsing. Always save the prompt to a file first, then use $(cat file).

WhatsApp

# Step 1: Save prompt to a temp file
write /tmp/cc-prompt.txt with your task text

# Step 2: Launch with $(cat ...)
nohup python3 {baseDir}/run-task.py \
  --task "$(cat /tmp/cc-prompt.txt)" \
  --project ~/projects/my-project \
  --session "agent:main:whatsapp:group:<JID>" \
  --timeout 900 \
  > /tmp/cc-run.log 2>&1 &

The --session key (e.g. agent:main:whatsapp:group:120363425246977860@g.us) is used to auto-detect the WhatsApp target.

Telegram (thread-safe default)

# ALWAYS use the current thread session key from context:
# agent:main:main:thread:<THREAD_ID>
nohup python3 {baseDir}/run-task.py \
  --task "$(cat /tmp/cc-prompt.txt)" \
  --project ~/projects/my-project \
  --session "agent:main:main:thread:<THREAD_ID>" \
  --timeout 900 \
  > /tmp/cc-run.log 2>&1 &

Do NOT use agent:main:telegram:user:<id> for thread tests/runs. That routes to main chat scope and can drift from the source thread.

Telegram Threaded Mode (1:1 DM with threads)

When Marvin is used in Telegram Threaded Mode, each thread has its own session key like agent:main:main:thread:369520.

Fail-safe routing (NEW): run-task.py now enforces strict thread routing.

  • If --session contains :thread:<id>, the script refuses to start unless Telegram target + thread session UUID are resolved.
  • It auto-resolves missing values from sessions_list when possible.
  • If the session is inactive and not returned by API, it falls back to local session files: ~/.openclaw/agents/main/sessions/*-topic-<thread_id>.jsonl.
  • If provided --notify-session-id mismatches the session key, it exits with error.
  • Result: misrouted launches/heartbeats to main chat are blocked before Claude starts.

Use --notify-session-id to wake the exact thread session:

nohup python3 {baseDir}/run-task.py \
  --task "$(cat /tmp/cc-prompt.txt)" \
  --project ~/projects/my-project \
  --session "agent:main:main:thread:369520" \
  --timeout 900 \
  > /tmp/cc-run.log 2>&1 &

All 5 notification types route to the DM thread when --session key contains :thread:<id> ✅

  • --notify-session-id — optional override. Usually auto-resolved from session metadata/files.

  • --notify-thread-id — optional override. Usually auto-extracted from --session.

  • --reply-to-message-id — optional debug field; avoid for DM thread routing.

  • --validate-only — resolve routing and exit (no Claude run). Use this to verify thread launch args safely.

  • --notify-channel — optional override (telegram/whatsapp)

  • --notify-target — optional override for chat ID / JID

  • --timeout — max runtime in seconds (default: 7200 = 2 hours)

  • Always redirect stdout/stderr to a log file

Why file-based prompts?

Research/complex prompts contain single quotes, double quotes, markdown, backticks — any of these break shell argument parsing. Saving to a file and reading with $(cat ...) avoids all quoting issues.

Channel Detection

The detect_channel() function determines where to send notifications:

  1. CLI override wins — if --notify-channel and --notify-target are both provided, those are used exclusively
  2. WhatsApp auto-detect — if the session key contains @g.us (WhatsApp group JID), WhatsApp is used
  3. No target — if neither applies, notifications are silently skipped
def detect_channel(session_key):
    if NOTIFY_CHANNEL_OVERRIDE and NOTIFY_TARGET_OVERRIDE:
        return NOTIFY_CHANNEL_OVERRIDE, NOTIFY_TARGET_OVERRIDE
    jid = extract_group_jid(session_key)
    if jid:
        return "whatsapp", jid
    return None, None

How It Works

┌─────────────┐     nohup      ┌──────────────┐
│    Agent     │ ──────────────▶│  run-task.py  │
│  (OpenClaw)  │                │  (detached)   │
└─────────────┘                └──────┬───────┘
                                      │
                                      ▼
                               ┌──────────────┐
                               │  Claude Code  │  ← runs on Max subscription ($0 API)
                               │  (-p mode)    │
                               └──────┬───────┘
                                      │
                          ┌───────────┼───────────┐
                          ▼           ▼           ▼
                    Every 60s    On complete   On error/timeout
                    ┌────────┐  ┌──────────┐  ┌──────────────┐
                    │ ⏳ ping │  │ ✅ result │  │ ❌/⏰/💥 error│
                    │ silent │  │ channel  │  │   channel    │
                    └────────┘  └──────────┘  └──────────────┘

WhatsApp notification flow:

  1. Heartbeat pings (every 60s) → WhatsApp direct (informational, no agent wake)
  2. Final result → WhatsApp direct (human sees immediately) + sessions_send (agent wakes up)
  3. Agent receives [CLAUDE_CODE_RESULT] via sessions_send → processes it → sends summary via message(send) to WhatsApp group
  4. Human sees both: raw result + agent's analysis/next steps

Telegram notification flow (DM Threaded Mode — full pipeline):

  1. 🚀 Launch notification → thread ✅ (silent; HTML; <blockquote expandable> for prompt; via send_telegram_direct)
  2. ⏳ Heartbeat (every 60s) → thread ✅ (silent; plain text; via send_telegram_direct)
  3. 📡 Claude Code mid-task updates → thread ✅ (on-disk Python script /tmp/cc-notify-{pid}.py; CC calls file; prefix "📡 🟢 CC: " auto-added)
  4. ✅/❌/⏰/💥 Result notification → thread ✅ (HTML; <blockquote expandable> for result; via send_telegram_direct)
  5. 🤖 Agent summary → main chat ⚠️ (known limitation: openclaw agent --session-id synthetic messages have no currentThreadTs; acceptable)

send_telegram_direct() is the core mechanism for all thread-targeted notifications from external scripts. It calls api.telegram.org directly with message_thread_id — bypasses the OpenClaw message tool entirely (which cannot route to DM threads from outside a session context).

Fallback — if agent wake fails (session locked/busy): already_sent=True is set after the direct send, so no duplicate is sent.

Key detail: Telegram vs WhatsApp delivery

WhatsApp: Raw result sent directly (human sees it immediately) + sessions_send wakes agent for analysis.

Telegram: Result sent via send_telegram_direct → then agent woken via openclaw agent --session-id (no --deliver). The agent sends its response via message(action=send) and replies NO_REPLY. This avoids double messages — --deliver would deliver the agent's turn output on top of any message(action=send) calls inside the turn.

Why not sessions_send for Telegram? sessions_send is blocked in the HTTP /tools/invoke deny list by architectural design. The openclaw agent CLI bypasses this limitation.

Reliability Features

Timeout (default 2 hours)

  • --timeout 7200 → after 7200s: SIGTERM → wait 10s → SIGKILL
  • Timeout notification sent to channel with tool call count and last activity
  • Partial output saved to file

Crash safety

  • try/except wraps entire main → crash notification always sent
  • Both channel notification and agent wake attempted on any failure

PID tracking

  • PID file written to skills/claude-code-task/pids/
  • Stale PIDs cleaned on startup
  • Can check running tasks: ls skills/claude-code-task/pids/

Silent mode (Telegram only)

Telegram supports silent notifications (no sound). This is used for background/informational messages:

  • Heartbeat pings → silent=True
  • Launch notifications → silent=True
  • Final results → silent=False (default, user attention needed)

WhatsApp does NOT support silent mode — the flag is ignored for WhatsApp.

Telegram DM Threads vs Forum Groups

Telegram has two distinct thread models. The key difference for run-task.py is how to route messages to the thread.

The core problem with external scripts:

  • The OpenClaw message tool's threadId parameter is Discord-specific — ignored for Telegram
  • Target format "chatId:topic:threadId" is rejected by the message tool's target resolver
  • Session auto-routing (currentThreadTs) works ONLY inside active sessions — external scripts have no session context
  • Solution: send_telegram_direct() bypasses the message tool entirely; calls api.telegram.org directly with message_thread_id

DM Threaded Mode (bot-user private chat with threads):

  • All notifications use send_telegram_direct(chat_id, text, thread_id=..., parse_mode=...) ✅
  • thread_id auto-extracted from session key *:thread:<id> by extract_thread_id()
  • Launch + finish: parse_mode="HTML" with <blockquote expandable> for prompt/result
  • Heartbeats + mid-task: parse_mode=None (plain text, avoid Markdown parse errors)
  • parse_mode="Markdown" trap: finish messages contain **text** (CommonMark bold); Telegram MarkdownV1 rejects this with HTTP 400 — messages silently don't arrive
  • replyTo trap: combining replyTo + message_thread_id → Telegram rejects request → fallback strips thread_id → message lands in main chat
  • Agent summary: openclaw agent --session-id <uuid> wakes thread session; response goes to main chat (no currentThreadTs in synthetic messages — known, acceptable limitation)

Forum Groups (supergroup with Forum topics enabled):

  • Same send_telegram_direct() approach works; message_thread_id is standard Bot API for Forum topics
  • Auto-detected from session key pattern *:thread:<id>

Claude Code mid-task updates:

  • DO NOT embed bot tokens or curl commands in the task prompt — Claude Code flags this as prompt injection
  • run-task.py writes /tmp/cc-notify-{pid}.py to disk before launching Claude Code
  • Task prompt prepended with [Automation context: ... python3 /tmp/cc-notify-{pid}.py 'msg' ...]
  • Claude Code calls the file (legitimate local script pattern, no safety warning)
  • Script automatically prepends "📡 🟢 CC: " to all messages; cleaned up in finally block

Notification types

| Event | Emoji | WhatsApp delivery | Telegram delivery | DM thread? | |-------|-------|-------------------|-------------------|------------| | Launch | 🚀 | send_channel (Markdown) | send_telegram_direct (HTML, silent) | ✅ message_thread_id | | Heartbeat | ⏳ | send_channel (Markdown) | send_telegram_direct (plain, silent) | ✅ message_thread_id | | CC mid-task update | 📡 | — | /tmp/cc-notify-{pid}.py (Bot API, silent) | ✅ message_thread_id | | Success | ✅ | send_channel + sessions_send | send_telegram_direct (HTML) + openclaw agent | ✅ message_thread_id | | Error | ❌ | send_channel + sessions_send | send_telegram_direct (HTML) + openclaw agent | ✅ message_thread_id | | Timeout | ⏰ | send_channel + sessions_send | send_telegram_direct (HTML) + openclaw agent | ✅ message_thread_id | | Crash | 💥 | send_channel + sessions_send | send_telegram_direct (HTML) + openclaw agent | ✅ message_thread_id | | Agent summary | 🤖 | — | openclaw agent wake | ⚠️ main chat (no thread ctx) |

Claude Code Flags

  • -p "task" — print mode (non-interactive, outputs result)
  • --dangerously-skip-permissions — no confirmation prompts
  • --verbose --output-format stream-json — real-time activity tracking for heartbeats

Why NOT exec/pty?

  • exec has 2 min default timeout → kills long tasks
  • Even with pty:true, output has escape codes, hard to parse
  • nohup + -p mode: clean, detached, reliable

Git requirement

Claude Code needs a git repo. run-task.py auto-inits if missing.

Python 3.9 Compatibility

run-task.py uses Optional[X] from typing (not X | None) for compatibility with Python 3.9. The union syntax (X | None) requires Python 3.10+.

# Correct (3.9+)
from typing import Optional
def foo(x: Optional[str]) -> Optional[str]: ...

# Would break on 3.9
def foo(x: str | None) -> str | None: ...

Full E2E Test (reference)

Use this when you need to validate the entire pipeline in one run:

  • launch notification in source thread
  • heartbeat after >60s
  • Claude mid-task progress update (📡 🟢 CC)
  • final result in source thread
  • agent wake attempt with summary step

Pass criteria

  1. Launch message appears in the same thread (with expandable prompt quote)
  2. At least one wrapper heartbeat appears after ~60s
  3. At least one mid-task CC update appears (via /tmp/cc-notify-<pid>.py)
  4. Final result appears in the same thread (expandable result quote)
  5. Agent wake is attempted (openclaw agent --session-id ...) and does not duplicate final result

Canonical full test prompt pattern

  • keep prompt compact (about 10 lines) for routine testing
  • ensure prompt length is >4500 chars to verify quote truncation/collapse behavior in Telegram
  • force runtime >60s (sleep 70) to trigger wrapper heartbeat
  • explicitly instruct Claude to call the notify script at least twice
  • include a short structured report so output is easy to verify

Canonical launch (minimal mode)

cat > /tmp/cc-full-test-prompt.txt << 'EOF'
# ~10 lines, but total >4500 chars:
# 1) notify script now
# 2) create test file with repeated text (to exceed 4500 chars)
# 3) sleep 70 + notify script again
# 4) run several shell commands
# 5) return short structured report
EOF

python3 {baseDir}/run-task.py \
  --task "$(cat /tmp/cc-full-test-prompt.txt)" \
  --project /tmp/cc-e2e-project \
  --session "agent:main:main:thread:<THREAD_ID>" \
  --validate-only

nohup python3 {baseDir}/run-task.py \
  --task "$(cat /tmp/cc-full-test-prompt.txt)" \
  --project /tmp/cc-e2e-project \
  --session "agent:main:main:thread:<THREAD_ID>" \
  --timeout 900 \
  > /tmp/cc-full-test.log 2>&1 &

Verification artifacts

  • wrapper log: /tmp/cc-full-test.log
  • Claude output: /tmp/cc-YYYYMMDD-HHMMSS.txt
  • session registry entry in ~/.openclaw/claude_sessions.json

Examples

WhatsApp: Create a tool

nohup python3 {baseDir}/run-task.py \
  -t "Create a Python CLI tool that converts markdown to HTML with syntax highlighting. Save as convert.py" \
  -p ~/projects/md-converter \
  -s "agent:main:whatsapp:group:120363425246977860@g.us" \
  > /tmp/cc-run.log 2>&1 &

Telegram: Research codebase (thread-safe)

nohup python3 {baseDir}/run-task.py \
  --task "$(cat /tmp/cc-prompt.txt)" \
  --project ~/projects/my-project \
  --session "agent:main:main:thread:<THREAD_ID>" \
  --timeout 1800 \
  > /tmp/cc-run.log 2>&1 &

Telegram Threaded Mode: Research codebase

nohup python3 {baseDir}/run-task.py \
  --task "$(cat /tmp/cc-prompt.txt)" \
  --project ~/projects/my-project \
  --session "agent:main:main:thread:369520" \
  --timeout 1800 \
  > /tmp/cc-run.log 2>&1 &
# thread_id auto-extracted from session key
# target + session UUID auto-resolved from API/local session files

Telegram Threaded Mode: Mid-task updates from Claude Code

run-task.py automatically creates an on-disk notification script before launching Claude Code, so CC can send progress updates without seeing the bot token in the prompt (which triggers safety refusals):

# Just write a normal task prompt — run-task.py handles the rest
cat > /tmp/cc-prompt.txt << 'EOF'
STEP 1: Write analysis to /tmp/report.txt (600+ words)...

After step 1, send a progress notification using the script from the
automation context above: python3 /tmp/cc-notify-<PID>.py "Step 1 done."

STEP 2: Write summary to /tmp/summary.txt...
EOF

nohup python3 {baseDir}/run-task.py \
  --task "$(cat /tmp/cc-prompt.txt)" \
  --project ~/projects/my-project \
  --session "agent:main:main:thread:<THREAD_ID>" \
  --timeout 1800 \
  > /tmp/cc-run.log 2>&1 &
# run-task.py writes /tmp/cc-notify-{pid}.py before launch
# Prepends "[Automation context: use python3 /tmp/cc-notify-{pid}.py 'msg']" to task
# Claude Code calls the file; prefix "📡 🟢 CC: " auto-added; file cleaned up on exit

⚠️ Never embed bot tokens or curl commands in the task prompt — Claude Code correctly identifies hardcoded tokens + external API calls as prompt injection and refuses. Use the on-disk script pattern above instead.

Quick reference: launching from a Telegram DM thread (minimal mode)

# 1) Validate routing first (no Claude run)
python3 {baseDir}/run-task.py \
  --task "probe" \
  --project ~/projects/x \
  --session "agent:main:main:thread:<THREAD_ID>" \
  --validate-only

# 2) Real launch (only 3 required params)
nohup python3 {baseDir}/run-task.py \
  --task "$(cat /tmp/prompt.txt)" \
  --project ~/projects/x \
  --session "agent:main:main:thread:<THREAD_ID>" \
  --timeout 900 \
  > /tmp/cc-run.log 2>&1 &
  • Required: --task, --project, --session
  • Safety: Telegram launches without :thread:<id> are blocked by default (❌ Unsafe routing blocked)
  • For non-thread Telegram deployments, use --telegram-routing-mode allow-non-thread.
  • THREAD_ID is auto-extracted from session key
  • Target + session UUID are auto-resolved (API, then local session-file fallback)
  • If routing is inconsistent/unresolved, script exits with ❌ Invalid routing before run
  • All notifications from run-task (launch/heartbeat/result) stay on the source thread ✅

Long task with extended timeout

nohup python3 {baseDir}/run-task.py \
  -t "Refactor the entire auth module to use JWT tokens" \
  -p ~/projects/backend \
  -s "agent:main:whatsapp:group:120363425246977860@g.us" \
  --timeout 3600 \
  > /tmp/cc-run.log 2>&1 &

Cost

  • Claude Code runs on Max subscription ($200/mo) — NOT API tokens
  • Zero OpenClaw API cost while Claude Code works
  • Only cost: message delivery + brief agent turn for summary

Session Resumption

Claude Code sessions can be resumed to continue previous conversations. This is useful for:

  • Follow-up tasks building on previous research
  • Continuing after timeouts or interruptions
  • Multi-step workflows where context matters

How to Resume

When a task completes, the session ID is automatically captured and saved to the registry (~/.openclaw/claude_sessions.json).

To resume a session, use the --resume flag:

nohup python3 {baseDir}/run-task.py \
  --task "$(cat /tmp/cc-prompt.txt)" \
  --project ~/projects/my-project \
  --session "SESSION_KEY" \
  --resume <session-id> \
  > /tmp/cc-run.log 2>&1 &

Session Labels

Use --session-label to give sessions human-readable names for easier tracking:

nohup python3 {baseDir}/run-task.py \
  --task "$(cat /tmp/cc-prompt.txt)" \
  --project ~/projects/my-project \
  --session "SESSION_KEY" \
  --session-label "Research on Jackson Berler" \
  > /tmp/cc-run.log 2>&1 &

Listing Recent Sessions

The agent can read the session registry to find recent sessions:

# Python code (for agent automation)
from session_registry import list_recent_sessions, find_session_by_label

# List sessions from last 72 hours
recent = list_recent_sessions(hours=72)
for session in recent:
    print(f"{session['session_id']}: {session['label']} ({session['status']})")

# Find session by label (fuzzy match)
session = find_session_by_label("Jackson")
if session:
    print(f"Found: {session['session_id']}")

Or manually inspect the registry:

cat ~/.openclaw/claude_sessions.json

When to Resume vs Start Fresh

Resume when:

  • You need context from previous conversation
  • Building on previous research/analysis
  • Continuing interrupted work
  • Following up with clarifications or next steps

Start fresh when:

  • Completely unrelated task
  • Previous session was exploratory/experimental
  • You want a clean slate
  • Previous session context might cause confusion

Resume Failure Handling

If a session ID is invalid or expired:

  • Error message sent to channel with suggestion to start fresh
  • Process exits cleanly (no partial work)
  • Check stderr in /tmp/cc-run.log for details

Common resume failures:

  • Session expired (Claude Code has retention limits)
  • Invalid session ID (typo, wrong format)
  • Session from different project/context

Example Workflow

Step 1: Initial research

# Save prompt
write /tmp/research-prompt.txt with "Research the codebase architecture for project X"

# Launch task (Telegram thread-safe example)
nohup python3 {baseDir}/run-task.py \
  --task "$(cat /tmp/research-prompt.txt)" \
  --project ~/projects/project-x \
  --session "agent:main:main:thread:<THREAD_ID>" \
  --session-label "Project X architecture research" \
  > /tmp/cc-run.log 2>&1 &

Step 2: Check result and find session ID

# Session ID printed in stderr: "📝 Session registered: <id>"
tail /tmp/cc-run.log

# Or read from registry
cat ~/.openclaw/claude_sessions.json | grep "Project X"

Step 3: Follow-up implementation

# Save follow-up prompt
write /tmp/implement-prompt.txt with "Based on your research, implement the authentication module"

# Resume session
nohup python3 {baseDir}/run-task.py \
  --task "$(cat /tmp/implement-prompt.txt)" \
  --project ~/projects/project-x \
  --session "SESSION_KEY" \
  --resume <session-id-from-step-1> \
  --session-label "Project X auth implementation" \
  > /tmp/cc-run2.log 2>&1 &

Files

skills/claude-code-task/
├── SKILL.md              # This file
├── run-task.py           # Async runner with notifications
├── session_registry.py   # Session metadata storage
└── pids/                 # PID files for running tasks (auto-managed)