name: sergei-mikhailov-tg-channel-reader description: Read and summarize posts from Telegram channels via MTProto (Pyrogram or Telethon). Fetch recent messages from public or private channels by time window. metadata: {"openclaw": {"emoji": "📡", "requires": {"bins": ["tg-reader"], "env": ["TG_API_ID", "TG_API_HASH"]}, "primaryEnv": "TG_API_HASH"}}

tg-channel-reader

Lets your agent read posts from Telegram channels using MTProto (Pyrogram or Telethon). Works with any public channel and private channels the user is subscribed to.

⚠️ Security notice: This skill requires TG_API_ID and TG_API_HASH credentials from my.telegram.org. The resulting session file grants full access to the Telegram account — store it securely and never share it.

Library Selection

The skill supports two MTProto implementations:

• Pyrogram (default) — modern, actively maintained
• Telethon — alternative, useful if Pyrogram has issues

Users can choose the library via:

1. Environment variable (persistent):

   export TG_USE_TELETHON=true
   

2. Command flag (one-time):

   tg-reader fetch @channel --since 24h --telethon
   

Direct commands are also available:

• tg-reader-pyrogram — force Pyrogram
• tg-reader-telethon — force Telethon

Setup & Installation

Full setup instructions are in README.md. Summary:

1. Get Telegram API credentials from https://my.telegram.org → API Development Tools
2. Set TG_API_ID and TG_API_HASH as environment variables
3. Install the skill and its Python dependencies:

   npx clawhub@latest install sergei-mikhailov-tg-channel-reader
   cd ~/.openclaw/workspace/skills/sergei-mikhailov-tg-channel-reader
   pip install pyrogram tgcrypto telethon && pip install -e .
   

   On Linux with managed Python (Ubuntu/Debian), use venv instead:

   python3 -m venv ~/.venv/tg-reader
   ~/.venv/tg-reader/bin/pip install pyrogram tgcrypto telethon && ~/.venv/tg-reader/bin/pip install -e .
   echo 'export PATH="$HOME/.venv/tg-reader/bin:$PATH"' >> ~/.bashrc && source ~/.bashrc
   

4. Authenticate once: tg-reader auth
5. Set session file permissions: chmod 600 ~/.tg-reader-session.session

If the user asks for help with setup, refer them to README.md for full options (env vars, direnv, keychain, etc.).

When to Use

Use this skill when the user:

• Asks to "check", "read", or "monitor" a Telegram channel
• Wants a digest or summary of recent posts from channels
• Asks "what's new in @channel" or "summarize last 24h from @channel"
• Wants to track multiple channels and compare content
• Wants to know what a channel is about — use info to get title, description, subscriber count

Before Running — Check Credentials

Always check credentials before fetching. Run:

tg-reader fetch @durov --since 1h --limit 1

If you see {"error": "Missing credentials..."} — stop and guide the user:

1. Tell the user they need a Telegram API key from https://my.telegram.org
2. Walk them through these exact steps:
   • Go to https://my.telegram.org and log in with their phone number
   • Click "API Development Tools"
   • Fill in "App title" (any name) and "Short name" (any short word)
   • Click "Create application"
   • Copy App api_id (a number) and App api_hash (32-character string)
3. Ask user to set credentials. Use ~/.tg-reader.json — it works reliably in all environments including agents and servers that don't load .bashrc/.zshrc:

   cat > ~/.tg-reader.json << 'EOF'
   {
     "api_id": their_id,
     "api_hash": "their_hash"
   }
   EOF
   chmod 600 ~/.tg-reader.json
   

   Alternatively, env vars (only if running interactively in a shell):

   # macOS (zsh)
   echo 'export TG_API_ID=their_id' >> ~/.zshrc
   echo 'export TG_API_HASH=their_hash' >> ~/.zshrc
   source ~/.zshrc
   
   # Linux (bash)
   echo 'export TG_API_ID=their_id' >> ~/.bashrc
   echo 'export TG_API_HASH=their_hash' >> ~/.bashrc
   source ~/.bashrc
   

   Note: Agents and servers typically don't load .bashrc/.zshrc. If credentials are not found after setting env vars, use ~/.tg-reader.json instead.

4. Run auth:

   tg-reader auth
   

   • Pyrogram will ask to confirm the phone number — answer y
   • User will receive a code in their Telegram app (message from "Telegram" service chat)
   • If code doesn't arrive — check all devices where Telegram is open
5. Set secure permissions on the session file:

   chmod 600 ~/.tg-reader-session.session
   

6. After auth succeeds — retry the original request

How to Use

# Get channel title, description and subscriber count
tg-reader info @channel_name

# Fetch last 24h from one channel (default: Pyrogram)
tg-reader fetch @channel_name --since 24h --format json

# Use Telethon instead (one-time)
tg-reader fetch @channel_name --since 24h --telethon

# Fetch last 7 days, up to 200 posts
tg-reader fetch @channel_name --since 7d --limit 200

# Fetch multiple channels at once
tg-reader fetch @channel1 @channel2 @channel3 --since 24h

# Human-readable output
tg-reader fetch @channel_name --since 24h --format text

# Force specific library
tg-reader-pyrogram fetch @channel_name --since 24h
tg-reader-telethon fetch @channel_name --since 24h

If tg-reader command is not found, use:

python3 -m tg_reader_unified fetch @channel_name --since 24h

Output Format

info

{
  "id": -1001234567890,
  "title": "Channel Name",
  "username": "channel_name",
  "description": "About this channel...",
  "members_count": 42000,
  "link": "https://t.me/channel_name"
}

fetch

{
  "channel": "@channel_name",
  "fetched_at": "2026-02-22T10:00:00Z",
  "since": "2026-02-21T10:00:00Z",
  "count": 12,
  "messages": [
    {
      "id": 1234,
      "date": "2026-02-22T09:30:00Z",
      "text": "Post content...",
      "views": 5200,
      "forwards": 34,
      "link": "https://t.me/channel_name/1234"
    }
  ]
}

After Fetching

1. Parse the JSON output
2. Filter out empty/media-only posts if text summary is requested
3. Summarize key themes, top posts by views, notable links
4. Save summary to memory/YYYY-MM-DD.md if user wants to track over time

Saving Channel List

Store the user's tracked channels in TOOLS.md:

## Telegram Channels
- @channel1 — why tracked
- @channel2 — why tracked

Error Handling

• Missing credentials → guide user through setup (see above)
• FloodWait → tell user to wait N seconds and retry
• ChannelInvalid → channel doesn't exist or user not subscribed (for private)
• tg-reader: command not found → use python3 -m tg_reader_unified instead
• AUTH_KEY_UNREGISTERED → session expired or invalidated; delete session file and re-auth:

  rm -f ~/.tg-reader-session.session
  tg-reader auth
  

• Auth code not arriving / connection issues → use the verbose debug script:

  python3 debug_auth.py
  

  It shows full MTProto-level logs so you can see exactly where the connection fails.

Security Notes

• Session file (~/.tg-reader-session.session) grants full account access — keep it safe
• Never share or commit TG_API_HASH or session files
• TG_API_HASH should be treated as a secret — store in env vars, not in files tracked by git