deepmiro

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Contents

• What It Does
• How It Works
• Quick Start — get an API key, install in 2 min
• Self-Host (Docker / Railway)
• MCP Server — tools available
• What's Different — vs the original MiroFish
• Persona Fidelity — the drift problem and how we fix it
• Monorepo Structure
• Use Cases
• Acknowledgments
• License

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What It Does

DeepMiro extracts entities and relationships from any document — a policy draft, a market report, a chapter of a novel — and constructs a parallel digital world. Inside it, hundreds of autonomous agents form opinions, argue on simulated social platforms, shift allegiances, and produce emergent behavior that no single prompt could predict.

You get back a structured prediction report and a living world you can interrogate, agent by agent.

Input: A PDF and a question in plain language. Output: A detailed prediction report + an interactive simulation you can explore.

How It Works

Document ──► Entity Extraction ──► Agent Generation ──► Dual-Platform Simulation ──► Prediction Report
              (NER + GraphRAG)    (personas, memory,     (Twitter-like + Reddit-like     (ReportAgent with
                                   social networks)       parallel interaction)            deep analysis tools)

Quick Start

1. Get an API key

Sign up at deepmiro.org → Dashboard → API Keys. Your key looks like dm_xxxxxxxxx.

2. Install

Pick the install path for your client. Don't install the .mcpb desktop extension if you're using Claude Code or Claude Cowork — those need the plugin to get the /predict skill, background polling, and live narration.

Claude Desktop → use .mcpb

1. Download deepmiro.mcpb from the latest release
2. Claude Desktop → Settings → Extensions → Advanced settings → Install Extension → pick the file
3. Paste your API key when prompted

Claude Code & Claude Cowork → use the plugin

The plugin ships the /predict skill — the MCP alone is missing the orchestration logic (background polling via cron, live agent narration, the setup wizard).

claude plugin marketplace add kakarot-dev/deepmiro
claude plugin install deepmiro@deepmiro-marketplace
export DEEPMIRO_API_KEY=dm_your_key   # or set in ~/.claude/settings.json

Restart Claude Code, then say /predict or predict how people will react to [scenario].

Everywhere else → npm package

Generic MCP install for clients that aren't Claude Desktop, Claude Code, or Claude Cowork:

Rehearse the Future in 60 Seconds

Four services, one compose file, one API key.

What gets deployed

What you need

• A Fireworks AI key (fireworks.ai, ~$5 free credit) — covers primary LLM, boost, and embeddings in one key. Any OpenAI-compatible API also works.
• openssl rand -hex 32 for your SurrealDB root password.
• ~$5–10/month of Railway credit if you're using the template.

Option A — Railway one-click

Railway reads docker-compose.yml from the repo root and prompts for LLM_API_KEY + SURREAL_PASSWORD. The MCP service gets a public *.up.railway.app URL — hand that to your AI tools.

Note — LLM provider on Railway. The template ships with Fireworks as the default (primary: minimax-m2p5, boost: gpt-oss-120b, embeddings: nomic-embed-text-v1.5 — one key covers all three). Any OpenAI-compatible API works — to swap to OpenAI, Together, Groq, Ollama, vLLM, or anything else, change LLM_BASE_URL and LLM_MODEL_NAME on the backend service's Variables tab after deploy. Same for LLM_BOOST_* if you want a separate reasoning model, and EMBEDDING_* if you want a different embedding provider.

Option B — Docker (self-hosted)

git clone https://github.com/kakarot-dev/deepmiro.git
cd deepmiro && cp .env.example .env

Edit .env — two required variables:

LLM_API_KEY=your-fireworks-or-openai-key
SURREAL_PASS=$(openssl rand -hex 32)

Start everything:

docker compose up -d

This pulls pre-built images from GHCR and starts four services:

First startup takes ~2 minutes (TWHIN-BERT model warm-up). Check readiness:

docker compose logs -f twhin-sidecar   # wait for "TWHIN-BERT ready"
docker compose logs backend            # wait for "DeepMiro Backend ready"

To build from source instead of pulling images:

docker compose -f docker-compose.yml \
  --build \
  -f docker/Dockerfile.backend \
  up -d

Or uncomment the build: blocks in docker-compose.yml and comment out the image: lines.

MCP lives on http://localhost:3001. Backend and SurrealDB stay internal to the compose network unless you explicitly publish them (see docker-compose.yml comments for how).

Wire it into Claude Desktop

Add DeepMiro to your Claude Desktop config file:

• macOS: ~/Library/Application Support/Claude/claude_desktop_config.json
• Windows: %APPDATA%\Claude\claude_desktop_config.json

For a local Docker deployment:

{
  "mcpServers": {
    "deepmiro": { "url": "http://localhost:3001/mcp" }
  }
}

For Railway or any public deployment:

{
  "mcpServers": {
    "deepmiro": { "url": "https://your-app.up.railway.app/mcp" }
  }
}

Restart Claude Desktop after editing. Then ask: "Use DeepMiro to simulate how 100 senior engineers would react to a return-to-office mandate" — and paste the memo.

What it costs

• Railway: ~$5–10/month (four services, ~4 GB resident)
• LLM: ~$0.10–0.20 per quick-preset simulation on Fireworks
• TWHIN-BERT: zero — runs locally in the sidecar

Security

MCP ships with no auth by default — set MCP_API_KEY in .env before exposing it to the internet. The backend REST API is internal-only out of the box.

Skip the deploy entirely? Use the hosted version at deepmiro.org — same engine, same models, no Docker.

MCP Server

DeepMiro is an MCP server. MCP is natively supported by Claude (Desktop, Code, Cowork) and Cursor, with growing support across ChatGPT Desktop, VS Code (Copilot), Windsurf, and OpenAI Codex CLI — one server, works in every MCP-enabled client.

npx deepmiro-mcp

Available tools: create_simulation, simulation_status, get_report, interview_agent, upload_document, list_simulations, search_simulations, simulation_data, cancel_simulation.

What's Different

DeepMiro is a performance-focused fork of the original MiroFish engine. Same OASIS simulation core, rebuilt infrastructure:

Persona Fidelity: How DeepMiro Keeps Agents In Character

Multi-agent LLM simulations have a dirty secret: personas drift. By round 20, Tucker Carlson starts quoting the ACLU. By round 45, Marco Rubio sounds like Bernie Sanders. Every distinct voice collapses into the same bland "helpful assistant" register.

This isn't a prompting problem — it's an attention decay problem. Kim et al. (COLM 2024) proved that LLM attention to system-prompt tokens decays geometrically over turns. LLaMA2-70B drifts significantly within 8 turns. Larger models drift more, not less. A 2KB persona cannot compete with 50KB of accumulated conversation history.

Every naive multi-agent simulation hits this wall. DeepMiro doesn't, because we copied what Stanford's Generative Agents (Park et al. 2023) did for their 25-agent Smallville simulation — with some practical shortcuts.

What we do

1. Structured personas with explicit negative examples. Every agent gets a structured profile alongside the prose bio:

• ideology_anchor — a 2-5 word partisan tag ("conservative populist", "progressive labor")
• core_beliefs — 3-5 first-person declarative statements, no hedging
• verbal_tics — 3-5 literal phrases the person actually uses
• never_say — 3-5 sentences the person would refuse to utter
• speaking_style — register + rhetorical habits

The never_say block is the drift killer. Models drift toward the centroid of what they say. Explicit negative examples ("Tucker Carlson would never say 'I stand with the ACLU'") anchor the LLM against that collapse.

2. Dynamic persona regeneration per round. Instead of locking the persona in at the system-prompt level and watching attention decay from round 1, we rebuild system_message.content before every agent acts. Each round, the agent sees a fresh third-person character brief:

# Character Brief: Tucker Carlson

The agent in this conversation is Tucker Carlson.
You are simulating how Tucker Carlson would respond.

## What Tucker Carlson Would NEVER Say
- "I stand with the ACLU"
- "We need to find common ground with progressives"
...

## What Tucker Carlson Has Said Recently
- "Permanent Washington wants you to believe..."
- "Let's pause for a moment — they're not even hiding it"
...

## Task
What would Tucker Carlson actually do? React in his authentic voice.
Do not become a neutral assistant. Do not seek balance.

The persona never gets stale because it's built fresh from the same structured fields every turn.

3. Third-person framing. "You are Tucker Carlson" triggers RLHF helpful-assistant sycophancy — the model tries to be polite and balanced because that's how it was trained to respond to "you are X" instructions. Third-person framing ("the agent is Tucker Carlson", "what would Tucker Carlson do?") bypasses that trigger entirely. This single change is load-bearing.

4. Self-consistency anchor. Each round injects the agent's own 3 most recent posts as reference material. Tucker Carlson sees what he just said, which makes him more likely to say something consistent with it. This is cheap drift resistance — no extra LLM calls, just reading from the action log.

5. No accumulated chat history. Unlike naive multi-agent setups, DeepMiro does NOT feed each agent the rolling conversation history from previous rounds. Agents get their fresh persona + the current feed observations. Attention stays focused on character + present context, not on 50KB of stale noise.

What we don't do

• We don't script reactions. Agents aren't told "mock liberal content" or "support conservative content" — that would script the outcome and destroy the simulation's predictive value. The emergent behavior is the whole point.
• We don't filter feeds by ideology. Tucker Carlson sees AOC's posts. That's how he has something to push back against. Echo chambers are not simulations.
• We don't fork OASIS. The entire fix is a runtime wrapper around CAMEL's agent pager. No upstream drift, no fork maintenance.

Research foundations

Benchmarks

15-agent quick simulation, enriched prompt, measured end-to-end:

The biggest win is the recommendation system: TWHIN-BERT embeddings are computed once per user at setup, then only new posts are embedded incrementally each round. Cosine similarity via numpy replaces what was previously a full LLM inference call — orders of magnitude faster per round.

Monorepo Structure

deepmiro/
├── engine/              # Python Flask simulation backend
│   ├── app/
│   │   ├── api/         # REST endpoints (simulation, graph, documents, report)
│   │   ├── services/    # Graph builder, simulation runner, report agent
│   │   ├── storage/     # SurrealDB adapter, embedding service, NER
│   │   └── utils/       # LLM client, retry logic, logging
│   └── pyproject.toml
├── mcp-server/          # TypeScript MCP server (npm: deepmiro-mcp)
│   └── src/
├── .claude-plugin/      # Claude Code plugin + marketplace manifests
├── .codex-plugin/       # OpenAI Codex plugin manifest
├── .agents/             # Codex marketplace catalog
├── .mcp.json            # MCP config (auto-loaded when running `claude` here)
├── skills/predict/      # /predict skill (auto-setup, narration, interviews)
├── helm-chart/          # Kubernetes (k3s) deployment
├── docker/              # Dockerfiles + compose
├── docs/                # Landing page
└── locales/             # English translation strings

Use Cases

Acknowledgments

DeepMiro is a fork of MiroFish, originally created by Guo Hangjiang and supported by Shanda Group. The simulation layer is powered by OASIS from the CAMEL-AI team.

License

DeepMiro is licensed under AGPL-3.0, inherited from its upstream MiroFish. AGPL is a strong copyleft license — read it before adopting at scale.

What AGPL-3.0 means for you

If your use case requires a license without the network-distribution share-back requirement (typical for embedding in a closed-source product or running a competing hosted offering), reach out at kakarot.joel@gmail.com to discuss a commercial license. The hosted deepmiro.org service is also explicitly designed for commercial users who want the engine without the AGPL obligation — use the API keys, skip the legal work.

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