Qnexus MCP Server
by blite-hqio.github.Blite-HQ/qnexus-mcpv0.2.0
MCP server for Quantinuum Nexus, wrapping the qnexus SDK. Not affiliated with Quantinuum.
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Maintained3mo ago
Install Qnexus MCP server
Install in Claude Code
claude mcp add qnexus -- uvx qnexus-mcpInstall in Cursor
{
"mcpServers": {
"qnexus": {
"command": "uvx",
"args": [
"qnexus-mcp"
]
}
}
}Add to ~/.cursor/mcp.json (global) or .cursor/mcp.json (project).
Install in Claude Desktop
{
"mcpServers": {
"qnexus": {
"command": "uvx",
"args": [
"qnexus-mcp"
]
}
}
}Settings → Developer → Edit Config (claude_desktop_config.json), then restart.
Install in VS Code
{
"servers": {
"qnexus": {
"type": "stdio",
"command": "uvx",
"args": [
"qnexus-mcp"
]
}
}
}Add to .vscode/mcp.json in your workspace.
Install in Windsurf
{
"mcpServers": {
"qnexus": {
"command": "uvx",
"args": [
"qnexus-mcp"
]
}
}
}Add to ~/.codeium/windsurf/mcp_config.json.
Configuration
| Variable | Required | Secret | Description |
|---|---|---|---|
| QNEXUS_MCP_TOOLSETS | — | — | Comma-separated toolsets: read,execute,manage,destructive (default: read). |
| QNEXUS_MCP_ALLOW_SPEND | — | — | Permit credit-spending (HQC) execution (default: false). |
| QNEXUS_MCP_ALLOW_HARDWARE | — | — | Permit real-QPU targets (default: false). |
| QNEXUS_MCP_ALLOW_DESTRUCTIVE | — | — | Permit delete/cancel/archive tools (default: false). |
| QNEXUS_MCP_MAX_CREDITS | — | — | Hard per-call HQC ceiling; 0 blocks all spend (default: 0). |
| QNEXUS_MCP_MAX_OUTCOMES | — | — | Top-N cap on distinct measurement outcomes returned per result item (default: 100). |
| QNEXUS_MCP_MAX_SUBMISSIONS_PER_MINUTE | — | — | Sliding-window submission cap; each circuit in a batch counts as one (default: 6). |
| QNEXUS_MCP_PROJECTS | — | — | Comma-separated project allowlist, enforced on every mutating tool (default: all projects). |
Freshness
Maintained — last maintenance signal 3mo ago. The newest of the signals below sets the band.
Last commit (default branch)
2026-07-23 · 3mo ago · GitHub
Latest release
2026-07-23 · 3mo ago · GitHub · v0.2.0
Package published
no data · npm/PyPI
Registry entry updated
2026-07-23 · 3mo ago · official registry · v0.2.0
FAQ
›How do I install the Qnexus MCP server in Claude Code?
Run: claude mcp add qnexus -- uvx qnexus-mcp. For Cursor, VS Code, Claude Desktop and Windsurf, use the install tabs above.
›Does Qnexus require an API key?
No required environment variables are declared in its published metadata.
›Can I use Qnexus as a remote (hosted) MCP server?
No hosted endpoint is published; it runs locally over stdio.
›Is Qnexus in the official MCP registry?
Yes, as io.github.Blite-HQ/qnexus-mcp.