git clone https://github.com/littleblakew/msds-chain-mcp.git
cd msds-chain-mcp
pip install -r requirements.txt

claude mcp add msds-chain -- python /path/to/msds-chain-mcp/server.py

codex marketplace add https://github.com/littleblakew/msds-chain-mcp

{
  "mcpServers": {
    "msds-chain": {
      "command": "python",
      "args": ["/absolute/path/to/msds-chain-mcp/server.py"],
      "env": {
        "MSDS_API_KEY": "sk-msds-your-key-here"
      }
    }
  }
}

# 1. Add MCP server (if not already configured)
claude mcp add msds-chain --transport sse --url https://mcp.lagentbot.com/sse

# 2. Clone skill files
git clone https://github.com/littleblakew/msds-chain-mcp.git /tmp/msds-chain-mcp
cp -r /tmp/msds-chain-mcp/skill .agents/skills/msds-safety-check
ln -s ../../.agents/skills/msds-safety-check .claude/skills/msds-safety-check

User: I'm planning a Grignard reaction with magnesium turnings, diethyl ether,
      and bromobenzene. Check if this setup is safe.

Claude:
  → calls batch_safety_check(["magnesium", "diethyl ether", "bromobenzene"])
  → Returns: compatibility matrix, PPE requirements, storage grouping

User: My Opentrons deck has these in different slots:
      Slot 1: Acetone, Slot 3: Concentrated H2SO4, Slot 5: Methanol,
      Slot 7: Sodium borohydride. Any safety issues?

Claude:
  → calls check_chemical_compatibility(["acetone", "sulfuric acid", "methanol", "sodium borohydride"])
  → ⚠️ INCOMPATIBLE: Sodium borohydride + sulfuric acid (violent reaction, H2 gas evolution)
  → ⚠️ CAUTION: Acetone + sulfuric acid (exothermic)
  → Recommendation: Move sodium borohydride to maximum distance from acids

User: We need to ship toluene and dichloromethane to our Japan lab.
      What transport regulations apply?

Claude:
  → calls get_transport_classification(["toluene", "dichloromethane"])
  → calls check_regulatory_compliance(["toluene", "dichloromethane"], regions=["JP"])
  → Returns: UN numbers, IATA packing instructions, Japan-specific regulations

User: Create a safety audit report for our quarterly review.
      Chemicals: acetone, methanol, ethanol, isopropanol, hexane.

Claude:
  → calls create_audit_session("Q2 2026 Solvent Cabinet Review", ["acetone", "methanol", "ethanol", "isopropanol", "hexane"])
  → calls get_audit_report("SESSION-ID")
  → Returns: Signed PDF URL (Ed25519 signature, suitable for GLP/GMP compliance)

# Streamable HTTP (recommended for Claude Code 2026+)
MSDS_API_KEY=sk-msds-xxx python server_remote.py

# Or SSE mode
MSDS_MCP_TRANSPORT=sse MSDS_API_KEY=sk-msds-xxx python server_remote.py

claude mcp add msds-chain --transport http https://your-server.example.com/mcp

docker build -t msds-chain-mcp .
docker run -p 8080:8080 -e MSDS_API_KEY=sk-msds-xxx msds-chain-mcp

Your AI Agent (Brain)          MSDS Chain MCP (Hands)
┌──────────────────┐           ┌─────────────────────────┐
│ Claude Code      │──MCP────▶│ server.py (stdio/SSE)   │
│ Cursor           │           │   ↓                     │
│ Any MCP client   │           │ MSDS Chain Backend API  │
└──────────────────┘           │   ↓                     │
                               │ Safety Reasoning Engine │
                               │ (Rules + LLM fallback)  │
                               └─────────────────────────┘

export MSDS_API_KEY=sk-msds-your-key
npx @modelcontextprotocol/inspector python server.py