<h1 align="center">RunAPI Flux 2 MCP Server</h1>
<p align="center"> <strong>Flux 2 API access for AI agents: run image generation operations, poll asynchronous results, and check pricing through one focused MCP server.</strong> </p>
<p align="center"> <sub>Works with Claude Code, Codex, Cursor, Windsurf, VS Code, Roo Code, and any MCP-compatible host.</sub> </p>
<p align="center"> <a href="https://www.npmjs.com/package/@runapi.ai/flux-2-mcp"><img src="https://img.shields.io/npm/v/%40runapi.ai/flux-2-mcp?style=flat-square&color=blue" alt="npm version"></a> <a href="https://github.com/runapi-ai/flux-2-mcp"><img src="https://img.shields.io/badge/GitHub-runapi--ai%2Fflux--2--mcp-24292f?style=flat-square" alt="GitHub repository"></a> <a href="LICENSE"><img src="https://img.shields.io/badge/License-Apache_2.0-blue?style=flat-square" alt="Apache-2.0 license"></a> <img src="https://img.shields.io/badge/Type-MCP_Server-blue?style=flat-square" alt="MCP Server"> <img src="https://img.shields.io/badge/Models-6-16a34a?style=flat-square" alt="6 models"> </p>
<p align="center"> <a href="#install">Install</a> | <a href="#tools">Tools</a> | <a href="#models">Models</a> | <a href="#agent-prompts">Agent Prompts</a> | <a href="#configuration">Configuration</a> | <a href="#links">Links</a> </p>
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Why This Package?
@runapi.ai/flux-2-mcp is a focused Model Context Protocol server for the Flux 2 model line on RunAPI. It gives MCP-compatible assistants direct access to 2 endpoints and 6 model variants without loading the full RunAPI catalog.
Use this per-model server when an agent should stay scoped to Flux 2. Use @runapi.ai/mcp when one assistant should discover every RunAPI model line.
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Install
Add it to Claude Code:
claude mcp add flux-2 -s user -- npx -y @runapi.ai/flux-2-mcpUse project scope when the server should be shared with a repository:
claude mcp add flux-2 -s project -- npx -y @runapi.ai/flux-2-mcpCodex, Cursor, Windsurf, VS Code, Roo Code, and other MCP hosts can use the same stdio command:
{
"mcpServers": {
"flux-2": {
"command": "npx",
"args": ["-y", "@runapi.ai/flux-2-mcp"]
}
}
}check_pricing works before sign-in. For task creation and status polling, ask your assistant to call the login tool. It opens a browser login and saves credentials to ~/.config/runapi/config.json, the same file used by runapi login. Headless and CI hosts can still set RUNAPI_API_KEY before starting the MCP host.
Ready-made examples are in examples/ for Claude, Cursor, Windsurf, VS Code, and Roo Code.
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Tools
| Tool | Auth | Purpose | |---|---|---| | remix_image | Yes | Create a Flux 2 remix image task and optionally wait for a terminal status. Returns the task id, status, and output URLs. | | text_to_image | Yes | Create a Flux 2 text to image task and optionally wait for a terminal status. Returns the task id, status, and output URLs. | | get_task | Yes | Fetch the current status and latest payload for an existing task. | | check_pricing | No | Look up current pricing for a Flux 2 model and endpoint. |
---
Models
Flux 2 covers 6 model variants across 2 endpoints. Each tool accepts the models listed for it:
| Tool | Models | |---|---| | remix_image | flux-2-flex-remix-image, flux-2-max-remix-image, flux-2-pro-remix-image | | text_to_image | flux-2-flex-text-to-image, flux-2-max-text-to-image, flux-2-pro-text-to-image |
Model availability can change between releases. Use check_pricing or the Flux 2 model page for the current catalog view.
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Agent Prompts
Ask your assistant in natural language; it can inspect pricing, create the task, and return the task id plus output URLs.
Create a task
Run a Flux 2 remix image task with RunAPI.The assistant can call check_pricing, then remix_image, and return the task id, status, and output URLs.
Submit without waiting
Create the task but don't wait for it to finish.The assistant calls the create tool with wait: false and returns the task id. Check on it later with get_task.
Check pricing before creating
Check current Flux 2 pricing, then create the task if it matches my request.The assistant calls check_pricing and can link to the Flux 2 model page for the canonical catalog entry.
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Configuration
The server resolves auth in this order:
RUNAPI_API_KEYenvironment variable, useful for headless and CI hosts~/.config/runapi/config.json, created by the MCPlogintool orrunapi login- No key, which still allows
check_pricing
The config file is normally managed by login. A pre-provisioned headless config can use:
{
"apiKey": "your_runapi_key"
}Do not commit real API keys.
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Links
| Resource | URL | |---|---| | Flux 2 model page | https://runapi.ai/models/flux-2 | | npm package | @runapi.ai/flux-2-mcp | | GitHub repository | runapi-ai/flux-2-mcp | | RunAPI MCP overview | runapi.ai/mcp | | RunAPI docs | runapi.ai/docs |
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License
Licensed under the Apache License, Version 2.0.
