RunAPI Flux MCP server for image generation: create tasks, poll results, and check pricing across 3 model variants from Claude Code, Codex, Cursor
Flux MCP server exists for a simple reason — assistants are far more useful when they can act on Flux directly instead of describing what you should do. 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.
Flux API access for AI agents: run image generation operations, poll asynchronous results, and check pricing through one focused MCP server.
Once Flux is connected, these are the calls the assistant has available:
remix_image — Yestext_to_image — Yesget_task — Yescheck_pricing — NoYou will need one environment variable: RUNAPI_API_KEY. The server will not start without them, which is usually why the tools fail to appear on a first run. Keep credentials in your client's env block or a secrets manager rather than in a file you might commit.
Installation goes through your MCP client rather than a global install: point it at @runapi.ai/flux-mcp on npm and it is fetched when the client starts. The copy-paste blocks for Claude Desktop, Claude Code and Cursor are further down this page.
Among the developer tooling options, the useful question is rarely "what can it do" but "what does it cost you to run" — permissions, credentials, and how much of your context its toolset consumes. Flux's toolset — remix_image, text_to_image, get_task and 1 more — is a fair guide to whether it matches your workflow. It is maintained by runapi-ai; worth a glance at recent repository activity before you build anything load-bearing on it.
SyncDev reviews every entry in this directory against the project's own documentation before publishing, and revisits them as servers change.
| Tool | What it does |
|---|---|
| remix_image | Yes |
| text_to_image | Yes |
| get_task | Yes |
| check_pricing | No |
{
"mcpServers": {
"flux-1": {
"command": "npx",
"args": ["-y", "@runapi.ai/flux-mcp"],
"env": {
"RUNAPI_API_KEY": "your-value"
}
}
}
}Add to claude_desktop_config.json, then restart Claude Desktop.
| Variable | Description | Required |
|---|---|---|
| RUNAPI_API_KEY | Credential the server authenticates with. | Yes |
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