Ollama Domain Expert Delegation

An MCP server that lets your orchestrating AI model (Claude, GPT, Qwen, DeepSeek, etc.) delegate domain-specific tasks to local Ollama models running on your own GPU. Instead of one model doing everything, purpose-built specialists handle structured tasks while the orchestrator focuses on planning and user interaction.

Why

Running AI agents with dozens of tools and complex multi-step workflows burns through cloud LLM tokens fast. Many of those tokens go to structured tasks that don't need frontier-level reasoning:

• Generating config from structured data (template-filling with rules)
• Parsing show command output (pattern matching)
• Building API queries (schema mapping)
• Validating configs against a source of truth (checklist evaluation)

These tasks are ideal for small local models (7B) with baked-in system prompts. The expertise lives in the prompt, not the model weights.

Architecture

┌─────────────────────────────────────────┐
│ Orchestrating Model (Claude, etc.)      │
│ Plans, decides, interacts with user     │
└──────────┬──────────────────────────────┘
           │ MCP tool calls
           ▼
┌─────────────────────────────────────────┐
│ ollama-mcp (this server)                │
│ Domain Router + Health Checker          │
│ Routes by domain → provider + model     │
└──────────┬──────────┬──────────┬────────┘
           │          │          │
           ▼          ▼          ▼
┌──────────────┐ ┌─────────┐ ┌──────────────┐
│ Ollama Local │ │ Ollama  │ │ OpenAI-compat│
│ (your GPU)   │ │ Cloud   │ │ (Groq, vLLM) │
└──────────────┘ └─────────┘ └──────────────┘

The server supports multiple inference backends simultaneously. Domain routing, health checks, and automatic failover are all configured via environment variables. Legacy single-Ollama setups continue to work unchanged.

Tools Provided

Tool	Purpose
ollama_generate_config	Delegate config generation to a domain expert
ollama_validate_design	Validate a network design against RFCs
ollama_domain_query	Ask a domain expert a technical question
ollama_validate_config_against_sot	Validate config matches source-of-truth intent
ollama_build_graphql_query	Build GraphQL queries from natural language
ollama_summarize_state	Compress show command output to JSON digest
ollama_compress_context	Reduce large API responses to task-relevant JSON
ollama_list_experts	List configured experts and availability
ollama_health_check	Check Ollama connectivity
ollama_delegation_stats	Show token savings metrics

Quick Start

1. Install Ollama and pull a base model

# On your GPU machine
ollama pull qwen2.5-coder:7b

2. Create domain expert models

cd mcp-servers/ollama-mcp/modelfiles/

# Use the examples as starting points
cp Modelfile.example-ospf Modelfile.my-ospf
# Edit the system prompt for your topology/rules
ollama create my-ospf-expert:7b -f Modelfile.my-ospf

3. Configure environment

export OLLAMA_BASE_URL=http://localhost:11434
export OLLAMA_TIMEOUT=60
export OLLAMA_MODEL_OSPF=my-ospf-expert:7b
export OLLAMA_MODEL_BGP=my-bgp-expert:7b
export OLLAMA_MODEL_GENERAL=qwen2.5-coder:7b
export OLLAMA_MODEL_FALLBACK=qwen2.5-coder:7b

4. Run the MCP server

cd mcp-servers/ollama-mcp/
pip install -r requirements.txt
python server.py

5. Add to your OpenClaw/agent config

{
  "ollama-mcp": {
    "command": "python3",
    "args": ["-u", "mcp-servers/ollama-mcp/server.py"],
    "env": {
      "OLLAMA_BASE_URL": "http://localhost:11434",
      "OLLAMA_TIMEOUT": "60",
      "OLLAMA_MODEL_OSPF": "my-ospf-expert:7b",
      "OLLAMA_MODEL_GENERAL": "qwen2.5-coder:7b",
      "OLLAMA_MODEL_FALLBACK": "qwen2.5-coder:7b"
    }
  }
}

Multi-Provider Configuration (New)

The new multi-provider system lets you define multiple inference backends and route domains independently. Providers are defined separately from routing — this keeps configuration modular and easy to reason about.

Provider Setup

Providers are configured with PROVIDER_* environment variables. The server discovers them automatically at startup.

Ollama Local (your GPU box)

PROVIDER_OLLAMA_LOCAL_URL=http://192.168.1.50:11434

Ollama Cloud (authenticated Ollama API)

PROVIDER_OLLAMA_CLOUD_URL=https://cloud.ollama.com
PROVIDER_OLLAMA_CLOUD_API_KEY=sk-your-key-here

OpenAI-Compatible (vLLM, Together, Groq, OpenRouter)

Use the pattern PROVIDER_OPENAI_<NAME>_URL and PROVIDER_OPENAI_<NAME>_API_KEY where <NAME> is any identifier you choose:

# Groq
PROVIDER_OPENAI_GROQ_URL=https://api.groq.com/openai
PROVIDER_OPENAI_GROQ_API_KEY=gsk_your-key

# vLLM on your cluster
PROVIDER_OPENAI_VLLM_URL=http://10.0.0.5:8000
PROVIDER_OPENAI_VLLM_API_KEY=token-abc123

# Together AI
PROVIDER_OPENAI_TOGETHER_URL=https://api.together.xyz
PROVIDER_OPENAI_TOGETHER_API_KEY=tok_your-key

Each OpenAI-compatible provider gets a derived ID: openai-groq, openai-vllm, openai-together.

Domain Routing

Routes map domains to providers and models using ROUTE_* environment variables.

# Route OSPF tasks to local Ollama
ROUTE_OSPF_PROVIDER=ollama-local
ROUTE_OSPF_MODEL=my-ospf-expert:7b
ROUTE_OSPF_TEMPERATURE=0.1
ROUTE_OSPF_MAX_TOKENS=4096

# Route BGP tasks to Groq for speed
ROUTE_BGP_PROVIDER=openai-groq
ROUTE_BGP_MODEL=llama-3.3-70b-versatile
ROUTE_BGP_TEMPERATURE=0.1

# Route GraphQL tasks to local with a system prompt file
ROUTE_GRAPHQL_PROVIDER=ollama-local
ROUTE_GRAPHQL_MODEL=qwen2.5-coder:7b
ROUTE_GRAPHQL_SYSTEM_PROMPT_FILE=./prompts/graphql.txt

# Default provider for domains without explicit routes
ROUTE_DEFAULT_PROVIDER=ollama-local

Per-Domain Options

Variable	Purpose	Default
ROUTE_<DOMAIN>_PROVIDER	Provider ID to use	ROUTE_DEFAULT_PROVIDER
ROUTE_<DOMAIN>_MODEL	Model name	—
ROUTE_<DOMAIN>_TEMPERATURE	Generation temperature	0.1
ROUTE_<DOMAIN>_TOP_P	Top-p sampling	0.9
ROUTE_<DOMAIN>_MAX_TOKENS	Max output tokens	4096
ROUTE_<DOMAIN>_SYSTEM_PROMPT	Inline system prompt	—
ROUTE_<DOMAIN>_SYSTEM_PROMPT_FILE	File path for system prompt	—
ROUTE_<DOMAIN>_FALLBACK	Comma-separated fallback provider IDs	—

Health Checks and Fallback

The server runs background health probes against all providers. When a primary provider goes down, requests automatically route to the next healthy provider in the fallback chain.

How it works:

1. Every 30 seconds (configurable), each provider's is_reachable endpoint is probed
2. After 2 consecutive failures (configurable), the provider is marked unhealthy
3. A single successful probe restores healthy status
4. When a domain's primary provider is unhealthy, the router walks its fallback chain

Configuration:

HEALTH_CHECK_INTERVAL=30           # Probe interval in seconds
HEALTH_FAILURE_THRESHOLD=2         # Consecutive failures before marking unhealthy

Fallback chain example:

# OSPF primary is local, falls back to cloud, then Groq
ROUTE_OSPF_PROVIDER=ollama-local
ROUTE_OSPF_FALLBACK=ollama-cloud,openai-groq

Resolution order:

1. Primary provider (if healthy)
2. Each provider in the fallback chain (first healthy one wins)
3. ROUTE_DEFAULT_PROVIDER (last resort)
4. Graceful degradation response (NO_PROVIDER_AVAILABLE) — the orchestrating agent handles the task directly

Migration from Legacy Config

Your existing OLLAMA_* environment variables continue to work. The server auto-detects legacy mode and synthesizes equivalent new-style configuration internally.

Legacy mode activates when: OLLAMA_MODEL_* vars are present AND no PROVIDER_* vars are set.

Mapping rules:

Legacy Variable	New-Style Equivalent
OLLAMA_BASE_URL	PROVIDER_OLLAMA_LOCAL_URL
OLLAMA_MODEL_<DOMAIN>	ROUTE_<DOMAIN>_MODEL + ROUTE_<DOMAIN>_PROVIDER=ollama-local
OLLAMA_TEMP_<DOMAIN>	ROUTE_<DOMAIN>_TEMPERATURE
OLLAMA_MODEL_FALLBACK	ROUTE_DEFAULT_PROVIDER=ollama-local + ROUTE_DEFAULT_MODEL

When both styles are present: New-style PROVIDER_*/ROUTE_* vars take precedence. Legacy vars are ignored and a deprecation warning is logged.

Recommended migration steps:

1. Keep your existing setup running (legacy vars still work)
2. Add PROVIDER_OLLAMA_LOCAL_URL pointing to your Ollama instance
3. Convert each OLLAMA_MODEL_<DOMAIN> to ROUTE_<DOMAIN>_PROVIDER + ROUTE_<DOMAIN>_MODEL
4. Remove the old OLLAMA_* vars once everything checks out
5. Optionally add cloud or OpenAI-compatible providers for fallback

Example .env Configurations

Local-Only (single Ollama instance)

# Provider
PROVIDER_OLLAMA_LOCAL_URL=http://localhost:11434

# Routing
ROUTE_OSPF_PROVIDER=ollama-local
ROUTE_OSPF_MODEL=my-ospf-expert:7b
ROUTE_BGP_PROVIDER=ollama-local
ROUTE_BGP_MODEL=my-bgp-expert:7b
ROUTE_DEFAULT_PROVIDER=ollama-local

Local + Cloud Fallback

# Providers
PROVIDER_OLLAMA_LOCAL_URL=http://192.168.1.50:11434
PROVIDER_OLLAMA_CLOUD_URL=https://cloud.ollama.com
PROVIDER_OLLAMA_CLOUD_API_KEY=sk-your-key

# Routing with fallback
ROUTE_OSPF_PROVIDER=ollama-local
ROUTE_OSPF_MODEL=my-ospf-expert:7b
ROUTE_OSPF_FALLBACK=ollama-cloud

ROUTE_BGP_PROVIDER=ollama-local
ROUTE_BGP_MODEL=my-bgp-expert:7b
ROUTE_BGP_FALLBACK=ollama-cloud

ROUTE_DEFAULT_PROVIDER=ollama-local

Multi-Provider (local GPU + Groq + Together)

# Providers
PROVIDER_OLLAMA_LOCAL_URL=http://192.168.1.50:11434
PROVIDER_OPENAI_GROQ_URL=https://api.groq.com/openai
PROVIDER_OPENAI_GROQ_API_KEY=gsk_your-key
PROVIDER_OPENAI_TOGETHER_URL=https://api.together.xyz
PROVIDER_OPENAI_TOGETHER_API_KEY=tok_your-key

# Heavy structured tasks → local GPU (free)
ROUTE_OSPF_PROVIDER=ollama-local
ROUTE_OSPF_MODEL=my-ospf-expert:7b
ROUTE_OSPF_FALLBACK=openai-groq

# Fast turnaround tasks → Groq
ROUTE_BGP_PROVIDER=openai-groq
ROUTE_BGP_MODEL=llama-3.3-70b-versatile
ROUTE_BGP_FALLBACK=ollama-local,openai-together

# Complex reasoning → Together (larger models)
ROUTE_GENERAL_PROVIDER=openai-together
ROUTE_GENERAL_MODEL=meta-llama/Llama-3-70b-chat-hf
ROUTE_GENERAL_FALLBACK=openai-groq,ollama-local

ROUTE_DEFAULT_PROVIDER=ollama-local

# Health tuning
HEALTH_CHECK_INTERVAL=30
HEALTH_FAILURE_THRESHOLD=2

Creating Custom Domain Experts

The "expert" is just a base model + system prompt. No training required.

Modelfile Structure

FROM qwen2.5-coder:7b           ← base model (any Ollama model)
PARAMETER temperature 0.1        ← low = deterministic output
PARAMETER num_predict 4096       ← max output tokens
SYSTEM """
Your domain-specific rules, examples, and output format here.
"""

What Makes a Good Expert

1. Narrow scope — handle one specific task type well
2. Explicit rules — "NEVER do X", "ALWAYS do Y" with ❌ markers
3. Worked examples — complete input→output pairs
4. Output format — rigidly defined (JSON schema, config syntax)
5. Low temperature — 0.1 for structured output, 0.3 for explanations

Adding a New Domain

1. Create modelfiles/Modelfile.my-domain
2. Run ollama create my-domain-expert:7b -f Modelfile.my-domain
3. Set OLLAMA_MODEL_MY_DOMAIN=my-domain-expert:7b
4. The router picks it up automatically — no code changes needed

Model Size Guidance

Size	Speed	When to Use
3B	~80 tok/s	Too small for most tasks
7B	~42 tok/s	Structured config generation, parsing (recommended)
14B	~21 tok/s	Domain questions, complex reasoning
32B	~10 tok/s	Only if 7B quality is insufficient

For structured output with good system prompts, 7B matches 32B quality.

Token Savings Strategy

The biggest wins come from these patterns:

1. Query building — Local expert builds API queries instead of the orchestrator guessing
2. Context compression — Reduce 2KB API responses to 400B before the orchestrator reasons about them
3. State summarization — Pass/fail signals instead of raw output parsing
4. Config generation — The most token-intensive task, fully offloaded

Typical savings: 15-25K tokens per complex workflow run.

File Layout

mcp-servers/ollama-mcp/
├── server.py              # MCP server (10 tools, stdio transport)
├── routing.py             # Domain → provider routing (health-aware fallback)
├── health.py              # Async background health probes
├── compat.py              # Legacy OLLAMA_* env var compatibility layer
├── metrics.py             # Token savings + per-provider metrics tracker
├── models.py              # Pydantic request/response schemas
├── providers/             # Provider abstraction layer
│   ├── __init__.py        # Exports ProviderClient, ProviderResponse, GenerationOptions
│   ├── base.py            # Abstract base class + dataclasses
│   ├── ollama_local.py    # Ollama Local provider (HTTP API)
│   ├── ollama_cloud.py    # Ollama Cloud provider (authenticated)
│   ├── openai_compat.py   # OpenAI-compatible provider (vLLM, Groq, etc.)
│   └── registry.py        # Provider discovery from PROVIDER_* env vars
├── router.py              # [Deprecated] Old domain router (redirects to routing.py)
├── ollama_client.py       # [Deprecated] Old Ollama HTTP client
├── requirements.txt       # Dependencies: mcp, httpx, pydantic, hypothesis
└── modelfiles/            # Example Ollama Modelfiles
    ├── Modelfile.example-ospf
    ├── Modelfile.example-state-summarizer
    └── Modelfile.example-graphql-builder

Requirements

• Python 3.10+
• Ollama running somewhere accessible (local or remote)
• A base model pulled (e.g., qwen2.5-coder:7b)
• Dependencies: mcp, httpx, pydantic

License

BSL-1.1 (same as parent project)