Quantum OpenQASM MCP Server

by markusvankempenio.github.markusvankempen/quantum-openqasm-mcpv1.7.3

IBM Quantum OpenQASM 2.0 MCP server — 10 tools for backends, QASM submit, jobs & histograms. Qiskit Developer Pack ready. Cursor, VS Code, Claude Desktop, Bob, Antigravity via stdio or npx.

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Slowing4mo ago

Install Quantum OpenQASM MCP server

claude mcp add quantum-openqasm -e IBM_API_KEY='<ibm-api-key>' -e IBM_SERVICE_CRN='<ibm-service-crn>' -- npx -y @markusvankempen/quantum-openqasm-mcp

{
  "mcpServers": {
    "quantum-openqasm": {
      "command": "npx",
      "args": [
        "-y",
        "@markusvankempen/quantum-openqasm-mcp"
      ],
      "env": {
        "IBM_API_KEY": "<ibm-api-key>",
        "IBM_SERVICE_CRN": "<ibm-service-crn>"
      }
    }
  }
}

Add to ~/.cursor/mcp.json (global) or .cursor/mcp.json (project).

{
  "mcpServers": {
    "quantum-openqasm": {
      "command": "npx",
      "args": [
        "-y",
        "@markusvankempen/quantum-openqasm-mcp"
      ],
      "env": {
        "IBM_API_KEY": "<ibm-api-key>",
        "IBM_SERVICE_CRN": "<ibm-service-crn>"
      }
    }
  }
}

Settings → Developer → Edit Config (claude_desktop_config.json), then restart.

{
  "servers": {
    "quantum-openqasm": {
      "type": "stdio",
      "command": "npx",
      "args": [
        "-y",
        "@markusvankempen/quantum-openqasm-mcp"
      ],
      "env": {
        "IBM_API_KEY": "<ibm-api-key>",
        "IBM_SERVICE_CRN": "<ibm-service-crn>"
      }
    }
  }
}

Add to .vscode/mcp.json in your workspace.

{
  "mcpServers": {
    "quantum-openqasm": {
      "command": "npx",
      "args": [
        "-y",
        "@markusvankempen/quantum-openqasm-mcp"
      ],
      "env": {
        "IBM_API_KEY": "<ibm-api-key>",
        "IBM_SERVICE_CRN": "<ibm-service-crn>"
      }
    }
  }
}

Add to ~/.codeium/windsurf/mcp_config.json.

Configuration

Variable	Required	Secret	Description
IBM_API_KEY	yes	yes	IBM Cloud API key for IBM Quantum Platform
IBM_SERVICE_CRN	yes	—	IBM Quantum service instance CRN from quantum.ibm.com
IBM_QUANTUM_ENDPOINT	—	—	IBM Quantum API endpoint (default: us-east)
IBM_QUANTUM_BACKEND	—	—	Default backend name, e.g. ibm_fez

Freshness

Slowing — last maintenance signal 4mo ago. The newest of the signals below sets the band.

Last commit (default branch)
2026-06-26 · 4mo ago · GitHub
Latest release
2026-06-26 · 4mo ago · GitHub · v1.8.0
Package published
no data · npm/PyPI
Registry entry updated
2026-06-09 · 4mo ago · official registry · v1.7.3

FAQ

›How do I install the Quantum OpenQASM MCP server in Claude Code?

Run: claude mcp add quantum-openqasm -e IBM_API_KEY='<ibm-api-key>' -e IBM_SERVICE_CRN='<ibm-service-crn>' -- npx -y @markusvankempen/quantum-openqasm-mcp. For Cursor, VS Code, Claude Desktop and Windsurf, use the install tabs above.

›Does Quantum OpenQASM require an API key?

Yes. It expects IBM_API_KEY, IBM_SERVICE_CRN, of which 1 is a secret.

›Can I use Quantum OpenQASM as a remote (hosted) MCP server?

No hosted endpoint is published; it runs locally over stdio.

›Is Quantum OpenQASM in the official MCP registry?

Yes, as io.github.markusvankempen/quantum-openqasm-mcp.