claude-telegram-bridge 0.5.0

Control an existing interactive Claude Code session from Telegram.

Claude Telegram Bridge

Control an already-running interactive Claude Code session from Telegram.

This bridge polls Telegram, pastes incoming messages into a visible tmux Claude Code pane, tails Claude transcript JSONL, and sends only the matching final answer back to Telegram.

The bridge is Claude-specific. It is not a general multi-AI bridge and it does not share runtime code with the Codex Telegram Bridge.

What It Supports

• Text prompts from Telegram into a live Claude Code tmux session.
• Telegram photos and image documents saved locally, then injected as local_path prompts for Claude to inspect.
• Telegram voice, audio, video, animation, and document uploads saved locally with caption and metadata preserved.
• Optional audio transcription through a local command configured with CLB_AUDIO_TRANSCRIBE_CMD.
• Transcript-based final-answer extraction instead of screen scraping.
• Optional flow mirror: live "work in progress" card that mirrors each tool-use step of the current turn to Telegram so you can follow long runs.
• Single Telegram chat allowlist and token ownership registry.
• Duplicate-egress guard hooks for users who also have Telegram MCP reply tools or terminal mirror hooks installed.

This is not MCP. It is a local bridge daemon for one visible Claude Code session.

Public Export Model

This public repository is maintained from a private operator source through a sanitized export step. The export keeps the reusable Claude bridge behavior, hook templates, config examples, and documentation, while stripping private chat ids, token paths, hostnames, node labels, and local automation paths before release.

Claude Telegram Bridge and Codex Telegram Bridge remain separate programs because they drive different interactive CLIs and transcript formats. The shared maintenance rule is the same: keep one internal source for each bridge, generate the public copy through an export script, and never publish private wrappers or operator-specific trigger paths.

Billing And Terms

This project does not use claude -p and does not create hidden one-shot Claude sessions. It drives an interactive Claude Code session that you already started.

The subscription billing classification of a 24/7 daemon that automatically injects prompts into an interactive Claude Code session is unverified. This project does not claim that this usage is subscription-safe. You are responsible for deciding whether to run it under your account, plan, and applicable terms.

Verified Backend

• Claude Code interactive tmux session: experimental, locally verified by the maintainers.
• Other AI CLIs: not supported.

How It Works

Telegram user message/media
  -> getUpdates polling
  -> single chat id allowlist
  -> media download to local state directory when present
  -> paste prompt envelope into tmux Claude pane
  -> SessionStart sidecar binds tmux pane to Claude transcript JSONL
  -> transcript tail finds the final answer for the injected nonce
  -> Telegram sendMessage

The bridge uses one Bot API egress path. The included hooks prevent Claude's Telegram MCP reply tool and terminal mirror hooks from sending duplicate answers while the bridge owns a turn.

Slash Commands

Slash commands sent from Telegram are classified before anything is injected into the Claude pane. Commands that would open an interactive picker or dialog are never pasted raw, because a blocking dialog can freeze the one visible session. Each command falls into one of these groups.

Command	Behavior
/context	Read-only context screen. The bridge widens the tmux capture window, runs /context, captures the pane with ANSI color, renders it locally to PNG, and replies with sendPhoto to the same Telegram chat.
/usage, /cost	Read-only info commands. The bridge widens the tmux capture window, waits for the render to finish, trims terminal chrome to a clean text view, and mirrors that text back to Telegram.
/model	Intercepted. Pasting /model raw opens an interactive picker that can freeze the session, so the bridge shows an inline keyboard of model choices instead and applies the pick non-interactively as /model <alias>.
/clear, /exit, /quit	Passed through unchanged; these do not open a dialog. /exit and /quit end the session, so the bridge triggers watchdog recovery for a graceful restart afterward. /clear only resets context.
/ping, /start, /status	Bridge health and status, answered by the bridge itself.
Anything else	Blocked from injection as a freeze-guard fail-safe. The bridge replies with the supported list instead of risking a stuck session.

To bypass the freeze guard and inject a slash command raw, prefix the Telegram message with ! (for example !/theme).

Capture tuning for /context, /usage, and /cost:

• CLB_CONTEXT_SETTLE_SEC - floor delay before the first capture attempt. Defaults to 1.2 seconds.
• CLB_CONTEXT_CAPTURE_TIMEOUT_SEC - how long to keep polling for a finished render before sending the last captured frame. Defaults to 8.0 seconds.
• CLB_CONTEXT_IMAGE_FONT - optional local monospace font path used when rendering /context PNG output. Defaults to common system monospace fonts.
• CLB_CONTEXT_IMAGE_FONT_SIZE - /context PNG font size. Defaults to 17.
• CLB_MODEL_CHOICES - optional comma-separated list of model aliases shown in the /model inline keyboard.

Files

• claude_telegram_bridge.py - bridge daemon.
• hooks/claude-telegram-bridge-session-start.sh - records transcript and tmux pane binding for the daemon.
• hooks/claude-telegram-bridge-pretool-block.sh - blocks Telegram MCP replies during bridge-owned turns.
• config.example.env - local environment template.

Install

Install from PyPI with pipx (recommended) or pip:

pipx install claude-telegram-bridge

pip install --user claude-telegram-bridge

This provides the claude-telegram-bridge command. Installed copies also get the startup version check with a one-tap Telegram update button. Running from a clone works too: use python3 claude_telegram_bridge.py in place of the installed command.

Minimal Manual Setup

1. Start Claude Code in tmux:

tmux -L default new -s claude
claude --dangerously-skip-permissions

2. Create a Telegram bot with BotFather. Paste the bot token only into your local terminal or local config file. Never send it in Telegram.

3. Copy the example config:

cp config.example.env .env
chmod 600 .env

4. Edit .env and set:

CLB_TOKEN_FILE="$HOME/.config/claude-telegram-bridge/token.json"
CLB_CHAT_ID="123456789"
CLB_TOKEN_REGISTRY="$HOME/.config/claude-telegram-bridge/token-registry.json"
CLB_STATE_DIR="$HOME/.local/state/claude-telegram-bridge"

5. Store the token locally:

mkdir -p "$HOME/.config/claude-telegram-bridge"
printf '{"token":"%s"}\n' 'PASTE_BOTFATHER_TOKEN_HERE' \
  > "$HOME/.config/claude-telegram-bridge/token.json"
chmod 600 "$HOME/.config/claude-telegram-bridge/token.json"

6. Create a token registry entry. The token_id is the first 16 hex chars of the SHA-256 of the token.

python3 - <<'PY'
import hashlib, json, pathlib
root = pathlib.Path.home() / ".config/claude-telegram-bridge"
token = json.loads((root / "token.json").read_text())["token"]
token_id = hashlib.sha256(token.encode()).hexdigest()[:16]
(root / "token-registry.json").write_text(json.dumps({
    "tokens": {
        "default": {
            "token_id": token_id,
            "mode": "polling",
            "owner": "claude-telegram-bridge",
            "expected_consumer": "claude",
            "allow_delete_webhook": False
        }
    }
}, indent=2) + "\n")
PY

7. Register the SessionStart hook in Claude Code settings. The exact settings file location depends on your Claude Code install.

{
  "hooks": {
    "SessionStart": [
      {
        "hooks": [
          {
            "type": "command",
            "command": "/absolute/path/to/hooks/claude-telegram-bridge-session-start.sh"
          }
        ]
      }
    ]
  }
}

8. Run the daemon:

set -a
. ./.env
set +a
python3 claude_telegram_bridge.py

Send /ping to the bot, then send a normal prompt.

Safety Defaults

• Polling only; no public webhook is required.
• One allowed Telegram chat id.
• Token ownership registry must match the local token before polling starts.
• Interactive slash commands that could open a blocking dialog are held back by a freeze guard rather than pasted raw; a set of read-only and safe commands is supported and mirrored. See Slash Commands for the full set and the ! escape hatch.
• The PreToolUse egress guard is included for users who also have Telegram MCP reply tools installed.
• Outgoing media is limited to bridge-owned local outputs such as /context PNG replies; assistant answer attachment auto-discovery is not part of this minimal export.

Optional Settings

• CLB_FLOW_MIRROR_FLAG - path to a flag file that enables the flow mirror. When the file exists, the bridge mirrors each tool-use step of the current turn to Telegram as one live-updating card. Off by default (no file). Enable with touch "$HOME/.config/claude-telegram-bridge/flow-mirror.on" and disable by removing the file.
• CLB_ACTIVE_TURN_STALE_SECONDS - releases a previously observed Telegram turn when Claude is idle but no final reply was captured, so later queued messages can continue instead of being blocked behind a stale active turn. Defaults to 900 seconds.

Advanced settings

The bridge reads ~20 more tuning knobs (self-update via CLB_AUTO_UPDATE / CLB_NO_UPDATE_CHECK, send-retry policy, durable queue/outbox paths, session binding TTLs, an optional CLB_WATCHDOG_SCRIPT lifecycle hook, and more). All of them ship with safe defaults; the full annotated list lives at the bottom of config.example.env.

Release Checklist

See RELEASE_CHECKLIST.md before publishing a fork or release.