MCP Server Guide

Use Flux 2 Flex from Claude Code

Flux 2 Flex is the premium tier of Black Forest Labs' Flux 2 line. Higher fidelity than Flux 2 Pro, especially on complex compositions and detail-heavy scenes.

If you use Claude Code and you want Flux 2 Flex available as a native tool that the agent can call directly, the AetherWave MCP server wires it up in one command. No SDK to learn, no separate API key per provider, no polling loop to write.

Install in 30 seconds

Run this from your terminal:

claude mcp add aetherwave \
-e AETHERWAVE_API_KEY=aw_live_your_key_here \
-- npx -y @aetherwave-studio/mcp

Get your API key at your Profile page under the Developer tab. New accounts start with free credits to try it without spending anything.

Quick facts

Model ID
flux-2-flex
Provider
Black Forest Labs via KIE.ai
Cost
14 cr at 1K, 24 cr at 2K
Outputs per call
1

How to use it

Once the MCP is installed, you can ask Claude Code naturally. It'll pick Flux 2 Flex from the model-selection rubric in the tool description when your prompt matches its strengths (premium detailed image generation).

Example interaction:

You
Generate premium production work where quality justifies cost

Claude Code calls aetherwave_generate_image with model: "flux-2-flex" and returns the finished asset URL. The result auto-saves to your AetherWave gallery (Cloudflare R2 hosted, no URL expiration).

Sample prompts that work well

Example 1
"Highly detailed cityscape at dusk with thousands of lit windows, 2K"
Example 2
"Studio still life with intricate glassware reflections, 2K, hyperreal"
Example 3
"Detailed action scene of a basketball game mid-dunk, frozen motion, 2K"

When to pick Flux 2 Flex

Flux 2 Flex shines for:

How it compares

vs flux-2-pro at 5 cr / 1K: Flux 2 Flex at 14 cr is the premium tier with more detail fidelity. Pick Pro for cost; Flex when production quality justifies the premium.

Run aetherwave_list_image_models from Claude Code to see the full live catalog with pricing.

Cost

Tiered pricing by resolution. 14 credits at 1K, 24 at 2K. Single output. The premium tier of the Flux 2 line.

Credits come from your AetherWave account. Plans:

Frequently Asked Questions

How do I install AetherWave MCP in Claude Code?

One command (shown above). Then restart Claude Code. The agent will have Flux 2 Flex available as part of the aetherwave_generate_image tool with 1 output(s) per call.

How do I use Flux 2 Flex from Claude Code?

Just describe what you want. The agent picks Flux 2 Flex when your prompt matches its strengths (premium detailed image generation). You can also explicitly request it by passing model: "flux-2-flex" in the tool call.

What does Flux 2 Flex cost per generation?

Tiered pricing by resolution. 14 credits at 1K, 24 at 2K. Single output. The premium tier of the Flux 2 line. Credits come from your AetherWave account (Studio sub from $9.99/mo or one-time bundles from $4.99/500 cr).

Try Flux 2 Flex from Claude Code

Free API key, free starter credits, single MCP install. Be running your first Flux 2 Flex generation in under five minutes.

Get Your Free API Key