microdao-daarion/services/agent-runtime

Agent Runtime Service

Executes agent logic: reads context, calls LLM, posts replies

Purpose

Agent Runtime is the execution engine for DAARION agents. It processes agent invocations by:

1. Loading agent blueprints
2. Reading channel history for context
3. Querying agent memory (RAG)
4. Building prompts for LLM
5. Generating responses
6. Posting back to channels
7. Storing interactions in memory

Architecture

router.invoke.agent (NATS)
    ↓
agent-runtime: Execute Agent Logic
    ↓
├─ Load Blueprint
├─ Read Channel History
├─ Query Memory (RAG)
├─ Call LLM
└─ Post Reply
    ↓
messaging-service → Matrix → Frontend

Features

• NATS Integration: Subscribes to router.invoke.agent
• Context Loading: Fetches last 50 messages from channel
• Memory Integration: Queries agent memory for relevant context
• LLM Integration: Calls LLM Proxy with full context
• Mock LLM: Falls back to mock responses when LLM Proxy unavailable (Phase 2)
• Message Posting: Posts replies via messaging-service
• Memory Writeback: Stores interactions for future RAG

API

Health Check

GET /health

Response:
{
  "status": "ok",
  "service": "agent-runtime",
  "version": "1.0.0",
  "nats_connected": true
}

Test Invocation (Manual)

POST /internal/agent-runtime/test-channel
Content-Type: application/json

{
  "agent_id": "agent:sofia",
  "entrypoint": "channel_message",
  "payload": {
    "channel_id": "7c72d497-27aa-4e75-bb2f-4a4a21d4f91f",
    "microdao_id": "microdao:daarion",
    "rewrite_prompt": null
  }
}

Response:
{
  "status": "processed",
  "agent_id": "agent:sofia"
}

Configuration

File: config.yaml

nats:
  servers: ["nats://nats:4222"]
  invocation_subject: "router.invoke.agent"

services:
  messaging: "http://messaging-service:7004"
  agent_memory: "http://agent-memory:7008"
  llm_proxy: "http://llm-proxy:7007"

llm:
  default_model: "gpt-4"
  max_tokens: 1000
  temperature: 0.7

memory:
  query_top_k: 5
  enable_writeback: true

Environment Variables

• NATS_URL: NATS server URL (default: nats://nats:4222)
• MESSAGING_SERVICE_URL: messaging-service URL (default: http://messaging-service:7004)
• AGENT_MEMORY_URL: agent-memory URL (default: http://agent-memory:7008)
• LLM_PROXY_URL: LLM Proxy URL (default: http://llm-proxy:7007)

Running Locally

Install Dependencies

pip install -r requirements.txt

Run Service

uvicorn main:app --reload --port 7006

Test

# Health check
curl http://localhost:7006/health

# Test invocation
curl -X POST http://localhost:7006/internal/agent-runtime/test-channel \
  -H "Content-Type: application/json" \
  -d '{
    "agent_id": "agent:sofia",
    "entrypoint": "channel_message",
    "payload": {
      "channel_id": "7c72d497-27aa-4e75-bb2f-4a4a21d4f91f",
      "microdao_id": "microdao:daarion"
    }
  }'

Docker

Build

docker build -t daarion/agent-runtime:latest .

Run

docker run -p 7006:7006 \
  -e MESSAGING_SERVICE_URL=http://messaging-service:7004 \
  -e NATS_URL=nats://nats:4222 \
  daarion/agent-runtime:latest

Agent Execution Flow

1. Receive Invocation

From NATS subject router.invoke.agent:

{
  "agent_id": "agent:sofia",
  "entrypoint": "channel_message",
  "payload": {
    "channel_id": "uuid",
    "message_id": "uuid",
    "matrix_event_id": "$event:server",
    "microdao_id": "microdao:X",
    "rewrite_prompt": "Optional prompt modification"
  }
}

2. Load Blueprint

Currently mock (Phase 2), will call agents-service in Phase 3:

blueprint = {
  "name": "Sofia-Prime",
  "model": "gpt-4",
  "instructions": "System prompt...",
  "capabilities": {...},
  "tools": ["create_task", "summarize_channel"]
}

3. Load Context

Fetch last 50 messages from messaging-service:

GET /api/messaging/channels/{channel_id}/messages?limit=50

4. Query Memory

RAG query to agent-memory:

POST /internal/agent-memory/query
{
  "agent_id": "agent:sofia",
  "microdao_id": "microdao:daarion",
  "query": "last user message",
  "k": 5
}

5. Build Prompt

Combine:

• System prompt (from blueprint)
• Rewrite prompt (if quiet hours)
• Memory context (top-K results)
• Recent messages (last 10)

6. Generate Response

Call LLM Proxy:

POST /internal/llm/proxy
{
  "model": "gpt-4",
  "messages": [
    {"role": "system", "content": "..."},
    {"role": "user", "content": "..."},
    ...
  ]
}

Falls back to mock response if unavailable.

7. Post Reply

Post to messaging-service:

POST /internal/agents/{agent_id}/post-to-channel
{
  "channel_id": "uuid",
  "text": "Agent response..."
}

8. Store Memory

(Optional) Store interaction:

POST /internal/agent-memory/store
{
  "agent_id": "agent:sofia",
  "microdao_id": "microdao:daarion",
  "content": {
    "user_message": "...",
    "agent_reply": "..."
  }
}

Mock LLM (Phase 2)

When LLM Proxy is not available, agent-runtime uses mock responses based on keywords:

• "привіт" / "hello" → Greeting
• "допомож" / "help" → Help menu
• "дяку" / "thank" → Thanks acknowledgment
• "phase 2" → Phase 2 explanation
• "?" → Question response

This allows testing the full flow without real LLM in Phase 2.

NATS Events

Subscribes To

• Subject: router.invoke.agent
• Payload: AgentInvocation

Publishes To

None directly (replies via messaging-service HTTP)

Monitoring

Logs

# Docker
docker logs -f agent-runtime

# Look for:
# ✅ Connected to NATS
# ✅ Subscribed to router.invoke.agent
# 🤖 Processing agent invocation
# 📝 Agent: agent:sofia
# ✅ Loaded blueprint
# ✅ Fetched N messages
# 💬 User message: ...
# 🤔 Generating response...
# ✅ Generated response
# ✅ Posted message to channel
# ✅ Agent replied successfully

Metrics (Future)

• Total invocations processed
• Average response time
• LLM calls per agent
• Success/failure rate
• Memory query latency

Troubleshooting

Agent Not Responding

Check logs:

docker logs agent-runtime | tail -50

Common issues:

1. Not receiving invocations from router
2. Cannot fetch channel messages
3. LLM error (check mock fallback)
4. Cannot post to channel

Cannot Post to Channel

❌ HTTP error posting message: 404
   Endpoint not found. You may need to add it to messaging-service.

Solution: Ensure messaging-service has internal endpoint:

POST /internal/agents/{agent_id}/post-to-channel

Memory Errors

⚠️ Agent Memory service not available (Phase 2 - OK)

This is expected in Phase 2. Agent continues without memory.

Phase 2 vs Phase 3

Phase 2 (Current)

• ✅ NATS subscription
• ✅ Channel history reading
• ✅ Mock LLM responses
• ✅ Message posting
• ⚠️ Mock agent blueprint
• ⚠️ Memory service optional

Phase 3 (Future)

• Real agent blueprint loading from agents-service
• Real LLM via LLM Proxy (OpenAI, Anthropic, DeepSeek)
• Full RAG with vector DB
• Tool invocation (create_task, etc.)
• Advanced prompt engineering
• Multi-agent coordination

Development

Adding New Capabilities

Edit load_agent_blueprint() in main.py:

async def load_agent_blueprint(agent_id: str) -> AgentBlueprint:
    return AgentBlueprint(
        id=agent_id,
        name="Sofia-Prime",
        model="gpt-4",
        instructions="Your custom instructions...",
        capabilities={
            "can_create_tasks": True,
            "can_use_tools": True,  # NEW
            "can_access_docs": True  # NEW
        },
        tools=["new_tool", ...]  # NEW
    )

Testing Locally

1. Start messaging-service (or mock it)
2. Start NATS (or run in test mode)
3. Run agent-runtime
4. Send test invocation via HTTP

curl -X POST http://localhost:7006/internal/agent-runtime/test-channel \
  -H "Content-Type: application/json" \
  -d @test_invocation.json

Future Enhancements

• Tool invocation support
• Multi-turn conversations
• Streaming responses
• Context window management
• Agent personality customization
• A/B testing for prompts
• Agent analytics dashboard

Version

Current: 1.0.0
Status: Production Ready (Phase 2)
Last Updated: 2025-11-24