Flux MCP Server

by runapi-aiio.github.runapi-builder/flux-mcpv0.2.0

RunAPI Flux MCP server for image generation: create tasks, poll results, and check pricing across 3 model variants from Claude Code, Codex, Cursor, and VS Code.

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Active9d ago

Install Flux MCP server

claude mcp add flux -e RUNAPI_API_KEY='<runapi-api-key>' -- npx -y @runapi.ai/flux-mcp

{
  "mcpServers": {
    "flux": {
      "command": "npx",
      "args": [
        "-y",
        "@runapi.ai/flux-mcp"
      ],
      "env": {
        "RUNAPI_API_KEY": "<runapi-api-key>"
      }
    }
  }
}

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

{
  "mcpServers": {
    "flux": {
      "command": "npx",
      "args": [
        "-y",
        "@runapi.ai/flux-mcp"
      ],
      "env": {
        "RUNAPI_API_KEY": "<runapi-api-key>"
      }
    }
  }
}

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

{
  "servers": {
    "flux": {
      "type": "stdio",
      "command": "npx",
      "args": [
        "-y",
        "@runapi.ai/flux-mcp"
      ],
      "env": {
        "RUNAPI_API_KEY": "<runapi-api-key>"
      }
    }
  }
}

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

{
  "mcpServers": {
    "flux": {
      "command": "npx",
      "args": [
        "-y",
        "@runapi.ai/flux-mcp"
      ],
      "env": {
        "RUNAPI_API_KEY": "<runapi-api-key>"
      }
    }
  }
}

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

Configuration

Variable	Required	Secret	Description
RUNAPI_API_KEY	—	yes	Optional RunAPI API key for headless hosts. Interactive MCP hosts can use the login tool, which writes shared RunAPI config.

Freshness

Active — last maintenance signal 9d ago. The newest of the signals below sets the band.

Last commit (default branch)
2026-09-30 · 9d ago · GitHub
Latest release
2026-09-30 · 9d ago · GitHub · v0.2.0
Package published
no data · npm/PyPI
Registry entry updated
2026-09-30 · 9d ago · official registry · v0.2.0

FAQ

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

Run: claude mcp add flux -e RUNAPI_API_KEY='<runapi-api-key>' -- npx -y @runapi.ai/flux-mcp. For Cursor, VS Code, Claude Desktop and Windsurf, use the install tabs above.

›Does Flux require an API key?

Yes. It expects RUNAPI_API_KEY, of which 1 is a secret.

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

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

›Is Flux in the official MCP registry?

Yes, as io.github.runapi-builder/flux-mcp.