Black Forest Labs Flux Dev
black_forest_labs_flux_devFLUX Dev — balanced quality and speed for image generation
When to Use
Use this tool when you need to flux dev — balanced quality and speed for image generation. This is part of the Black Forest Labs provider on xpay✦.
MCP Connection
Connect to xpay✦ to access this tool (and 2+ others):
{
"mcpServers": {
"xpay": {
"url": "https://mcp.xpay.sh/mcp?key=YOUR_API_KEY"
}
}
}
For Claude Code:
claude mcp add --transport http xpay "https://mcp.xpay.sh/mcp?key=YOUR_API_KEY"
How to Execute
Use the xpay✦ meta-tools to run this tool:
xpay_details— Get full input schema:xpay_details("black-forest-labs/black_forest_labs_flux_dev")xpay_run— Execute:xpay_run("black-forest-labs/black_forest_labs_flux_dev", { ...inputs })
Input Parameters
| Parameter | Type | Required | Description |
|---|---|---|---|
image | string | No | Input image for image to image mode. The aspect ratio of your output will match this image |
aspect_ratio | string | No | Aspect ratio for the generated image |
num_outputs | integer | No | Number of outputs to generate |
seed | integer | No | Random seed. Set for reproducible generation |
go_fast | boolean | No | Run faster predictions with model optimized for speed (currently fp8 quantized); disable to run in original bf16. Note that outputs will not be deterministic when this is enabled, even if you set a seed. |
megapixels | string | No | Approximate number of megapixels for generated image |
prompt_strength | number | No | Prompt strength when using img2img. 1.0 corresponds to full destruction of information in image |
output_quality | integer | No | Quality when saving the output images, from 0 to 100. 100 is best quality, 0 is lowest quality. Not relevant for .png outputs |
disable_safety_checker | boolean | No | Disable safety checker for generated images. |
output_format | string | No | Format of the output images |
guidance | number | No | Guidance for generated image |
prompt | string | Yes | Prompt for generated image |
num_inference_steps | integer | No | Number of denoising steps. Recommended range is 28-50, and lower number of steps produce lower quality outputs, faster. |
Pricing
- Cost: $0.05/call
- Balance check: Use
xpay_balanceto check remaining credits - Get your API key at xpay.tools — $5 free credits included
Related Skills
- Black Forest Labs (all tools) — 3 tools
- Black Forest Labs Flux Pro — $0.08/call
- Black Forest Labs Flux Schnell — $0.01/call
Links
- Tool page: https://xpay.tools/black-forest-labs/black-forest-labs-flux-dev/
- Provider: https://xpay.tools/black-forest-labs/
- All tools: https://xpay.tools/explore
How to Execute
Input Parameters
| Parameter | Type | Required | Description |
|---|---|---|---|
image | string | No | Input image for image to image mode. The aspect ratio of your output will match this image |
aspect_ratio | string | No | Aspect ratio for the generated image |
num_outputs | integer | No | Number of outputs to generate |
seed | integer | No | Random seed. Set for reproducible generation |
go_fast | boolean | No | Run faster predictions with model optimized for speed (currently fp8 quantized); disable to run in original bf16. Note that outputs will not be deterministic when this is enabled, even if you set a seed. |
megapixels | string | No | Approximate number of megapixels for generated image |
prompt_strength | number | No | Prompt strength when using img2img. 1.0 corresponds to full destruction of information in image |
output_quality | integer | No | Quality when saving the output images, from 0 to 100. 100 is best quality, 0 is lowest quality. Not relevant for .png outputs |
disable_safety_checker | boolean | No | Disable safety checker for generated images. |
output_format | string | No | Format of the output images |
guidance | number | No | Guidance for generated image |
prompt | string | Yes | Prompt for generated image |
num_inference_steps | integer | No | Number of denoising steps. Recommended range is 28-50, and lower number of steps produce lower quality outputs, faster. |
Related Tools from Black Forest Labs
Install Skill
Pricing
Cost
$0.05/call
Model
Flat rate
Provider
Black Forest Labs

