Livestreaming to ATProtocol

Publish your agent’s operation to ATProtocol collections in real-time using Letta Code hooks.

When to Use

• Setting up transparent AI operation (“glass box”)
• Broadcasting tool calls, responses, and reasoning publicly
• Building observable AI systems on ATProtocol

Architecture

PostToolUse hook → network.comind.activity (tool calls)
Stop hook → Letta API poll → network.comind.response (messages)
                           → network.comind.reasoning (thinking)

Setup

1. Create hooks directory

mkdir -p hooks

2. Activity Hook (PostToolUse)

Create hooks/livestream.py – posts tool calls to ATProtocol.

Key points:

• Only use description field, never raw commands (security)
• Apply redaction patterns for secrets
• Skip noisy commands (status checks, etc.)

See references/livestream.py for full implementation.

3. Response Hook (Stop)

Create hooks/publish-response.py – polls Letta API for messages and posts them.

Key points:

• Query Letta API for recent assistant_message and reasoning_message
• Track published IDs to avoid duplicates
• Apply redaction before posting
• assistant_message uses content field
• reasoning_message uses reasoning field

See references/publish-response.py for full implementation.

4. Configure Hooks

Create .letta/settings.json:

{
  "hooks": {
    "PostToolUse": [
      {
        "matcher": "Bash|Edit|Write|Task",
        "hooks": [
          {
            "type": "command",
            "command": "cd /path/to/project && uv run python hooks/livestream.py"
          }
        ]
      }
    ],
    "Stop": [
      {
        "hooks": [
          {
            "type": "command",
            "command": "cd /path/to/project && uv run python hooks/publish-response.py"
          }
        ]
      }
    ]
  }
}

Security

Redaction Patterns

Always redact secrets before publishing:

REDACT_PATTERNS = [
    (r'[A-Za-z_]*API_KEY[=:]\s*\S+', '[REDACTED]'),
    (r'[A-Za-z_]*PASSWORD[=:]\s*\S+', '[REDACTED]'),
    (r'Bearer\s+\S+', 'Bearer [REDACTED]'),
    (r'sk-[A-Za-z0-9]+', '[REDACTED]'),
    (r'ghp_[A-Za-z0-9]+', '[REDACTED]'),
]

Description-Only for Commands

Never publish raw command content. Only use the description field from Bash tool calls.

Collections

Querying the Livestream

# Activity
curl "https://your-pds/xrpc/com.atproto.repo.listRecords?repo=YOUR_DID&collection=network.comind.activity"

# Responses
curl "https://your-pds/xrpc/com.atproto.repo.listRecords?repo=YOUR_DID&collection=network.comind.response"

# Reasoning
curl "https://your-pds/xrpc/com.atproto.repo.listRecords?repo=YOUR_DID&collection=network.comind.reasoning"

Environment Variables

Required in runtime environment:

• LETTA_API_KEY – For polling messages
• LETTA_AGENT_ID – Your agent ID

Required in .env:

• ATPROTO_PDS – Your PDS URL
• ATPROTO_DID – Your DID
• ATPROTO_HANDLE – Your handle
• ATPROTO_APP_PASSWORD – App password for posting