FluxMCP
MCPFlux is an MCP server for AI image generation and editing using Flux models via the AceDataCloud platform.
Generate images from text prompts using 6 Flux models (flux-dev, flux-pro, flux-pro-1.1, flux-pro-1.1-ultra, flux-kontext-pro, flux-kontext-max), with customizable sizes, aspect ratios, batch counts, and optional webhook callbacks
Edit existing images by providing an image URL and a text description of desired changes (e.g., style transfer, object replacement, background changes), with Kontext models recommended for best results
Check task status for individual generation/edit tasks, retrieving image URLs and metadata once complete
Batch query multiple tasks at once (up to 50), more efficiently than querying one at a time
List available models to get detailed descriptions, capabilities, and recommendations for each Flux model
Explore tools and guidance to get a reference of all available actions, prompt best practices, and common workflow examples
Connect from various MCP-compatible clients (Claude, Cursor, VS Code, JetBrains, etc.) via hosted HTTP server or local stdio modes, with Bearer token authentication
Provides tools for AI image generation and editing using Flux models (flux-dev, flux-pro, flux-pro-1.1, flux-pro-1.1-ultra, flux-kontext-pro, and flux-kontext-max) via the AceDataCloud platform, enabling text-to-image generation and context-aware image modification.
FluxMCP
A Model Context Protocol (MCP) server for AI image generation and editing using Flux through the AceDataCloud platform.
Generate and edit stunning AI images with Flux models (flux-dev, flux-pro, flux-kontext) directly from Claude, Cursor, or any MCP-compatible client.
Features
Image Generation - Generate images from text prompts with 6 Flux models
Image Editing - Edit existing images with context-aware Flux Kontext models
Task Management - Track async generation tasks and batch status queries
Model Guide - Built-in model selection and prompt writing guidance
Dual Transport - stdio (local) and HTTP (remote/cloud) modes
Docker Ready - Containerized with K8s deployment manifests
Secure - Bearer token auth with per-request isolation in HTTP mode
Related MCP server: DiffuGen
Tool Reference
Tool | Description |
| Generate AI images from a text prompt using Flux. |
| Edit an existing image using Flux with a text prompt. |
| List all available Flux models and their capabilities. |
| List all available Flux tools and their use cases. |
| Query the status and result of a Flux image generation task. |
| Query multiple Flux image generation tasks at once. |
Quick Start
1. Get Your API Token
Sign up at AceDataCloud Platform
Go to the API documentation page
Click "Acquire" to get your API token
Copy the token for use below
2. Use the Hosted Server (Recommended)
AceDataCloud hosts a managed MCP server — no local installation required.
Endpoint: https://flux.mcp.acedata.cloud/mcp
All requests require a Bearer token. Use the API token from Step 1.
Claude.ai
Connect directly on Claude.ai with OAuth — no API token needed:
Go to Claude.ai Settings → Integrations → Add More
Enter the server URL:
https://flux.mcp.acedata.cloud/mcpComplete the OAuth login flow
Start using the tools in your conversation
Claude Desktop
Add to your config (~/Library/Application Support/Claude/claude_desktop_config.json on macOS):
{
"mcpServers": {
"flux": {
"type": "streamable-http",
"url": "https://flux.mcp.acedata.cloud/mcp",
"headers": {
"Authorization": "Bearer YOUR_API_TOKEN"
}
}
}
}Cursor / Windsurf
Add to your MCP config (.cursor/mcp.json or .windsurf/mcp.json):
{
"mcpServers": {
"flux": {
"type": "streamable-http",
"url": "https://flux.mcp.acedata.cloud/mcp",
"headers": {
"Authorization": "Bearer YOUR_API_TOKEN"
}
}
}
}VS Code (Copilot)
Add to your VS Code MCP config (.vscode/mcp.json):
{
"servers": {
"flux": {
"type": "streamable-http",
"url": "https://flux.mcp.acedata.cloud/mcp",
"headers": {
"Authorization": "Bearer YOUR_API_TOKEN"
}
}
}
}Or install the Ace Data Cloud MCP extension for VS Code, which registers the hosted MCP servers with one-click setup.
JetBrains IDEs
Go to Settings → Tools → AI Assistant → Model Context Protocol (MCP)
Click Add → HTTP
Paste:
{
"mcpServers": {
"flux": {
"url": "https://flux.mcp.acedata.cloud/mcp",
"headers": {
"Authorization": "Bearer YOUR_API_TOKEN"
}
}
}
}Claude Code
Claude Code supports MCP servers natively:
claude mcp add flux --transport http https://flux.mcp.acedata.cloud/mcp \
-h "Authorization: Bearer YOUR_API_TOKEN"Or add to your project's .mcp.json:
{
"mcpServers": {
"flux": {
"type": "streamable-http",
"url": "https://flux.mcp.acedata.cloud/mcp",
"headers": {
"Authorization": "Bearer YOUR_API_TOKEN"
}
}
}
}Cline
Add to Cline's MCP settings (.cline/mcp_settings.json):
{
"mcpServers": {
"flux": {
"type": "streamable-http",
"url": "https://flux.mcp.acedata.cloud/mcp",
"headers": {
"Authorization": "Bearer YOUR_API_TOKEN"
}
}
}
}Amazon Q Developer
Add to your MCP configuration:
{
"mcpServers": {
"flux": {
"type": "streamable-http",
"url": "https://flux.mcp.acedata.cloud/mcp",
"headers": {
"Authorization": "Bearer YOUR_API_TOKEN"
}
}
}
}Roo Code
Add to Roo Code MCP settings:
{
"mcpServers": {
"flux": {
"type": "streamable-http",
"url": "https://flux.mcp.acedata.cloud/mcp",
"headers": {
"Authorization": "Bearer YOUR_API_TOKEN"
}
}
}
}Continue.dev
Add to .continue/config.yaml:
mcpServers:
- name: flux
type: streamable-http
url: https://flux.mcp.acedata.cloud/mcp
headers:
Authorization: "Bearer YOUR_API_TOKEN"Zed
Add to Zed's settings (~/.config/zed/settings.json):
{
"language_models": {
"mcp_servers": {
"flux": {
"url": "https://flux.mcp.acedata.cloud/mcp",
"headers": {
"Authorization": "Bearer YOUR_API_TOKEN"
}
}
}
}
}cURL Test
# Health check (no auth required)
curl https://flux.mcp.acedata.cloud/health
# MCP initialize
curl -X POST https://flux.mcp.acedata.cloud/mcp \
-H "Content-Type: application/json" \
-H "Accept: application/json" \
-H "Authorization: Bearer YOUR_API_TOKEN" \
-d '{"jsonrpc":"2.0","id":1,"method":"initialize","params":{"protocolVersion":"2025-03-26","capabilities":{},"clientInfo":{"name":"test","version":"1.0"}}}'3. Or Run Locally (Alternative)
If you prefer to run the server on your own machine:
# Install from PyPI
pip install mcp-flux-pro
# or
uvx mcp-flux-pro
# Set your API token
export ACEDATACLOUD_API_TOKEN="your_token_here"
# Run (stdio mode for Claude Desktop / local clients)
mcp-flux-pro
# Run (HTTP mode for remote access)
mcp-flux-pro --transport http --port 8000Claude Desktop (Local)
{
"mcpServers": {
"flux": {
"command": "uvx",
"args": ["mcp-flux-pro"],
"env": {
"ACEDATACLOUD_API_TOKEN": "your_token_here"
}
}
}
}Docker (Self-Hosting)
docker pull ghcr.io/acedatacloud/mcp-flux-pro:latest
docker run -p 8000:8000 ghcr.io/acedatacloud/mcp-flux-pro:latestClients connect with their own Bearer token — the server extracts the token from each request's Authorization header.
Available Tools
Tool | Description |
| Generate images from text prompts with model selection |
| Edit existing images with text instructions |
| Query status of a single generation task |
| Query multiple task statuses at once |
| List all available Flux models and capabilities |
| Show all tools and workflow examples |
Available Prompts
Prompt | Description |
| Guide for choosing the right tool and model |
| Best practices for writing effective prompts |
| Common workflow patterns and examples |
Supported Models
Model | Quality | Speed | Size Format | Best For |
| Good | Fast | Pixels (256-1440px) | Quick prototyping |
| High | Medium | Pixels (256-1440px) | Production use |
| High | Medium | Aspect ratios | Image editing |
| Highest | Slower | Aspect ratios | Complex editing |
| High | Fast | Aspect ratios | Flux 2 balanced quality |
| Higher | Medium | Aspect ratios | Flux 2 production |
| Highest | Slower | Aspect ratios | Flux 2 maximum quality |
| Good | Fast | Aspect ratios | Flux 2 efficient output |
Usage Examples
Generate an Image
"Generate a photorealistic mountain landscape at golden hour"
→ flux_generate_image(prompt="...", model="flux-2-max", size="16:9")Edit an Image
"Add sunglasses to the person in this photo"
→ flux_edit_image(prompt="Add sunglasses", image_url="https://...", size="1:1", model="flux-kontext-pro")Check Task Status
"What's the status of my generation?"
→ flux_get_task(task_id="...")Environment Variables
Variable | Required | Default | Description |
| Yes (stdio) | — | API token from AceDataCloud |
| No |
| API base URL |
| No | — | OAuth client ID (hosted mode) |
| No |
| Platform base URL |
| No |
| Request timeout in seconds |
| No |
| MCP server name |
| No |
| Logging level |
Development
Setup
git clone https://github.com/AceDataCloud/FluxMCP.git
cd FluxMCP
pip install -e ".[all]"
cp .env.example .env
# Edit .env with your API tokenLint & Format
ruff check .
ruff format .
mypy core tools main.pyTest
# Unit tests
pytest --cov=core --cov=tools
# Skip integration tests
pytest -m "not integration"
# With coverage report
pytest --cov=core --cov=tools --cov-report=htmlGit Hooks
git config core.hooksPath .githooksAPI Reference
This MCP server uses the AceDataCloud Flux API:
POST /flux/images — Generate or edit images
POST /flux/tasks — Query task status (single or batch)
Full API documentation: platform.acedata.cloud
Documentation
License
MIT License — see LICENSE for details.
Links
Available Tools
6 toolsflux_edit_imageAInspect
Edit an existing image using Flux with a text prompt.
This allows you to modify an existing image based on a text description.
The kontext models (flux-kontext-pro, flux-kontext-max) are specifically
designed for high-quality image editing and style transfer.
Use this when:
- You want to modify or transform an existing image
- You want to change specific elements in an image
- You want to apply style changes or artistic effects
- You want to add, remove, or replace objects in an image
For generating new images from scratch, use flux_generate_image instead.
Returns:
Task ID and edited image information including URLs.
| Name | Required | Description | Default |
|---|---|---|---|
| size | Yes | Required output image size. For kontext models: aspect ratios like '1:1', '16:9'. For other models: pixel dimensions like '1024x1024'. | |
| model | No | Flux model to use for editing. Recommended models for editing: - flux-kontext-pro: Best for context-aware editing and style transfer (recommended) - flux-kontext-max: Maximum context for complex edits - flux-dev: Basic editing support Other models also support editing but kontext models give best results. | flux-kontext-pro |
| prompt | Yes | Description of how to edit the image. Be specific about what changes to make. Examples: 'Change the background to a sunset beach', 'Add sunglasses to the person', 'Make it look like a watercolor painting', 'Replace the car with a bicycle' | |
| image_url | Yes | URL of the image to edit. Must be a direct image URL (JPEG, PNG, etc.), not a web page containing an image. | |
| callback_url | No | Webhook callback URL for asynchronous notifications. |
Output Schema
| Name | Required | Description |
|---|---|---|
| result | Yes |
TDQS
Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
No annotations are provided, so the description carries the full burden. It explains the edit operation and mentions kontext model specifics but doesn't disclose async behavior (callback_url suggests it), rate limits, or auth requirements. Adequate but not rich.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.
Is the description appropriately sized, front-loaded, and free of redundancy?
Well-structured with clear sections, front-loaded purpose, and a concise returns line. Slightly long but every sentence adds value for usage guidance.
Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.
Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?
Covers purpose, usage, alternatives, and parameter guidance. The output schema exists and the return statement is brief; however, missing behavioral details (async, callback semantics) and no explicit when-not-to-use beyond generation, but sufficient for a complex multi-model tool.
Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.
Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?
Schema coverage is 100% with descriptions for all parameters. The description adds value by elaborating on recommended models and giving prompt examples beyond the schema, though not deeply for other params.
Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.
Does the description clearly state what the tool does and how it differs from similar tools?
The description states 'Edit an existing image using Flux with a text prompt' with specific verbs and resource. It clearly distinguishes from flux_generate_image by explicitly noting the sibling for generation.
Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.
Does the description explain when to use this tool, when not to, or what alternatives exist?
Provides explicit 'Use this when' list with four concrete scenarios and names the alternative tool (flux_generate_image) for when not to use it.
Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.
flux_generate_imageAInspect
Generate AI images from a text prompt using Flux.
Flux is a family of fast, high-quality image generation models by Black Forest Labs.
Different models offer different tradeoffs between speed, quality, and capabilities.
Use this when:
- You want to create new images from a text description
- You need high-quality AI-generated artwork or photos
- You want fast image generation with good prompt following
For editing existing images, use flux_edit_image instead.
Returns:
Task ID and generated image information including URLs.
| Name | Required | Description | Default |
|---|---|---|---|
| size | Yes | Required image size. For flux-dev: pixel dimensions like '1024x1024' (256-1440px, multiples of 32). For flux-2-flex/pro/max: pixel dimensions (x >= 64, multiples of 32). For kontext models: image ratios like '1:1', '16:9', '9:16', '4:3', '3:2', '2:3', '4:5', '5:4', '3:4', '21:9', '9:21'. | |
| count | No | Number of images to generate. Only supported for generate action. Default is 1. | |
| model | No | Flux model to use for generation. Options: - flux-dev: Fast development model, good balance of speed and quality (default) - flux-pro: Higher quality production model - flux-2-flex: Flux 2 flexible model, pixel sizes (x >= 64, multiple of 32) - flux-2-pro: Flux 2 professional model, high quality - flux-2-max: Flux 2 maximum-quality model - flux-2-klein: Flux 2 klein model, efficient generation - flux-kontext-pro: Context-aware model for editing and style transfer - flux-kontext-max: Maximum context model for complex editing tasks | flux-dev |
| prompt | Yes | Description of the image to generate. Be descriptive about style, subject, lighting, and composition. Examples: 'A majestic mountain landscape at golden hour, photorealistic', 'Cyberpunk street scene with neon lights and rain, cinematic', 'Minimalist logo design of a phoenix, vector art style' | |
| callback_url | No | Webhook callback URL for asynchronous notifications. When provided, the API will POST to this URL when the image is generated. |
Output Schema
| Name | Required | Description |
|---|---|---|
| result | Yes |
TDQS
Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
No annotations are provided, so the description carries the full transparency burden. It mentions returning a 'Task ID and generated image information including URLs,' which hints at async/task-based behavior. However, it does not explain whether generation is synchronous, how long it may take, whether it should be polled via flux_get_task, or side effects such as cost/rate limits. Some insight is given, but it is not comprehensive.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.
Is the description appropriately sized, front-loaded, and free of redundancy?
The structure is effective: a one-sentence purpose, brief context, use-case bullets, a sibling-tool contrast, and a returns section. It is slightly wordier than necessary—some model-family background could be trimmed—but every section earns its place.
Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.
Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?
For a 5-parameter image-generation tool, the description provides enough high-level context: generation purpose, model family tradeoff, use cases, editing alternative, and output type. It does not explicitly mention how to monitor task progress or poll until successful generation, but the 'Task ID' return value and the presence of flux_get_task make a workable inference.
Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.
Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?
Schema description coverage is 100%, so the baseline is 3. The description refers to prompts and mentions high-quality generation, but does not add substantial meaning beyond the schema's parameter descriptions. The schema already documents model recommendations, size formats, count/defaults, and callback_url semantics.
Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.
Does the description clearly state what the tool does and how it differs from similar tools?
The description opens with a specific verb and resource: 'Generate AI images from a text prompt using Flux.' It clearly distinguishes this tool from flux_edit_image by explicitly stating that editing existing images should use the sibling tool.
Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.
Does the description explain when to use this tool, when not to, or what alternatives exist?
The 'Use this when' section lists three concrete scenarios for new image generation, and explicitly states that editing existing images should use flux_edit_image instead. This provides clear when-to-use and when-not-to-use guidance.
Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.
flux_get_taskAInspect
Query the status and result of a Flux image generation task.
Use this to check if a generation is complete and retrieve the resulting
image URLs and metadata.
Use this when:
- You want to check if an image generation has completed
- You need to retrieve image URLs from a previous generation
- You used async callback and want to check results later
- The initial generation returned a task_id without immediate results
Returns:
Task status and generation result including image URLs.
| Name | Required | Description | Default |
|---|---|---|---|
| task_id | Yes | The task ID returned from a generation or edit request. This is the 'task_id' field from any flux_generate_image or flux_edit_image tool response. |
Output Schema
| Name | Required | Description |
|---|---|---|
| result | Yes |
TDQS
Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
No annotations are provided, so the description carries full burden. It correctly indicates this is a read-only query with no destructive effects, and mentions return content (image URLs and metadata). However, it does not disclose any rate limits, caching behavior, or error conditions, which are helpful for a polling tool.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.
Is the description appropriately sized, front-loaded, and free of redundancy?
The description is well-structured with a clear initial sentence, a bullet list of use cases, and a returns summary. It is concise without being terse, with no redundant information. Minor improvement could be removing the 'Returns:' line if output schema covers it, but still efficient.
Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.
Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?
Given the tool has one simple parameter and an output schema (context confirms its existence), the description covers the essential purpose and usage context. It explains when to use and what to expect, making it complete for an agent to understand when and how to invoke it.
Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.
Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?
Schema coverage is 100% with only one parameter (task_id). The schema description is already rich, specifying it comes from generation or edit tools. The description adds context by linking task_id to async workflows. This combination provides sufficient semantic clarity beyond the schema alone.
Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.
Does the description clearly state what the tool does and how it differs from similar tools?
The description clearly states 'Query the status and result of a Flux image generation task,' providing a specific verb and resource. It differentiates from sibling tools like flux_get_tasks_batch by focusing on a single task, and from generation tools by being a query operation.
Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.
Does the description explain when to use this tool, when not to, or what alternatives exist?
The description includes a 'Use this when' section listing four specific scenarios (check completion, retrieve URLs, async callback, delayed results). While it does not explicitly mention when not to use or alternatives like flux_get_tasks_batch, the guidance is clear and actionable.
Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.
flux_get_tasks_batchAInspect
Query multiple Flux image generation tasks at once.
Efficiently check the status of multiple tasks in a single request.
More efficient than calling flux_get_task multiple times.
Use this when:
- You have multiple pending generations to check
- You want to get status of several images at once
- You're tracking a batch of generations
Returns:
Status and result information for all queried tasks.
| Name | Required | Description | Default |
|---|---|---|---|
| task_ids | Yes | List of task IDs to query. Maximum recommended batch size is 50 tasks. |
Output Schema
| Name | Required | Description |
|---|---|---|
| result | Yes |
TDQS
Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
No annotations provided, so description carries burden. It states 'Efficiently check status' and 'returns status and result information', but does not disclose rate limits, authentication needs, or error behavior—adequate but minimal.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.
Is the description appropriately sized, front-loaded, and free of redundancy?
Description is concise, front-loaded with purpose, and uses bullet points for clarity—every sentence adds value without redundancy.
Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.
Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?
With output schema present and simple tool, description covers usage and return basics. Lacks details on invalid IDs or error handling, but still fairly complete.
Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.
Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?
Schema has 1 parameter with description including max batch size (100% coverage). Description adds context on efficiency and use cases but does not add new parameter meaning, meeting baseline 3.
Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.
Does the description clearly state what the tool does and how it differs from similar tools?
The description clearly states 'Query multiple Flux image generation tasks at once' with a specific verb and resource, and it distinguishes itself from the sibling flux_get_task by highlighting batch efficiency.
Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.
Does the description explain when to use this tool, when not to, or what alternatives exist?
Provides explicit when-to-use scenarios (multiple pending generations, batch tracking) and mentions efficiency over multiple calls, but lacks when-not-to-use or alternatives beyond the sibling.
Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.
flux_list_actionsAInspect
List all available Flux tools and their use cases.
Reference guide for what each tool does and when to use it.
Returns:
Categorized list of all tools with descriptions.
| Name | Required | Description | Default |
|---|---|---|---|
No parameters | |||
Output Schema
| Name | Required | Description |
|---|---|---|
| result | Yes |
TDQS
Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
No annotations are provided, so the description bears the full burden. It states the return type ('categorized list of all tools with descriptions') but doesn't disclose behavioral traits like no side effects, idempotency, or performance characteristics. For a list operation, this is adequate but not exemplary.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.
Is the description appropriately sized, front-loaded, and free of redundancy?
Three sentences, no waste. The first sentence immediately states the core purpose, the second explains its role, and the third describes the return. Front-loaded and efficient.
Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.
Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?
Given no parameters and the presence of an output schema, the description sufficiently explains what the tool does and what it returns. It is complete for a simple listing tool.
Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.
Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?
The input schema has zero parameters, and the description adds value by confirming that it lists 'all' available tools, implying no filtering options. With 100% schema coverage, the description reinforces the simplicity.
Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.
Does the description clearly state what the tool does and how it differs from similar tools?
The description clearly states 'List all available Flux tools and their use cases,' which is a specific verb-resource combination. It distinguishes from sibling tools like flux_generate_image and flux_list_models, which have different purposes.
Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.
Does the description explain when to use this tool, when not to, or what alternatives exist?
The description frames it as a 'reference guide for what each tool does and when to use it,' implying it should be used to understand other tools. While it doesn't explicitly state when not to use it, the sibling context makes its utility clear.
Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.
flux_list_modelsAInspect
List all available Flux models and their capabilities.
Reference guide for choosing the right Flux model for your use case.
Returns:
Detailed list of all Flux models with descriptions and recommendations.
| Name | Required | Description | Default |
|---|---|---|---|
No parameters | |||
Output Schema
| Name | Required | Description |
|---|---|---|
| result | Yes |
TDQS
Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
With no annotations provided, the description fully bears the burden of disclosure. It adequately describes the behavior: listing models with capabilities and recommendations, implying a read-only, non-destructive operation.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.
Is the description appropriately sized, front-loaded, and free of redundancy?
The description is concise with three short sentences covering what, why, and return. It is front-loaded with the primary action and adds value without verbosity.
Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.
Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?
Given no parameters and an output schema, the description is fairly complete. It explains the purpose, return value, and use case, though it could explicitly state it is read-only.
Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.
Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?
There are no parameters, and schema coverage is 100%. The description adds context by stating the return content (detailed list with descriptions and recommendations), which is not in the schema.
Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.
Does the description clearly state what the tool does and how it differs from similar tools?
The description clearly states that the tool lists all available Flux models and their capabilities, with a specific verb (List) and resource (Flux models). This distinguishes it from sibling tools that edit, generate, or retrieve tasks.
Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.
Does the description explain when to use this tool, when not to, or what alternatives exist?
The description mentions it is a 'Reference guide for choosing the right Flux model for your use case,' implying usage before model-dependent operations, but it does not explicitly exclude other uses or mention alternative tools.
Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.
Tool Schema Changelog
Recent tool additions, removals, and schema changes observed during successful MCP inspections. Dates show when Glama detected each change.
2 tool updates
v0.1.9- Changed
flux_edit_image5 fields changed- removed
Input schema / properties / size / anyOfRemoved value: -[ - { - "type": "string" - }, - { - "type": "null" - } -] - removed
Input schema / properties / size / defaultRemoved value: -null - changed
Input schema / properties / size / descriptionPrevious value: -"Output image size. For kontext models: aspect ratios like '1:1', '16:9'. For other models: pixel dimensions like '1024x1024'."New value: +"Required output image size. For kontext models: aspect ratios like '1:1', '16:9'. For other models: pixel dimensions like '1024x1024'." - added
Input schema / properties / size / typeAdded value: +"string" - changed
Input schema / requiredPrevious value: -[ - "prompt", - "image_url" -]New value: +[ + "prompt", + "image_url", + "size" +]
- Changed
flux_generate_image5 fields changed- removed
Input schema / properties / size / anyOfRemoved value: -[ - { - "type": "string" - }, - { - "type": "null" - } -] - removed
Input schema / properties / size / defaultRemoved value: -null - changed
Input schema / properties / size / descriptionPrevious value: -"Image size. For flux-dev: pixel dimensions like '1024x1024' (256-1440px, multiples of 32). For flux-2-flex/pro/max: pixel dimensions (x >= 64, multiples of 32). For kontext models: image ratios like '1:1', '16:9', '9:16', '4:3', '3:2', '2:3', '4:5', '5:4', '3:4', '21:9', '9:21'. Default varies by model."New value: +"Required image size. For flux-dev: pixel dimensions like '1024x1024' (256-1440px, multiples of 32). For flux-2-flex/pro/max: pixel dimensions (x >= 64, multiples of 32). For kontext models: image ratios like '1:1', '16:9', '9:16', '4:3', '3:2', '2:3', '4:5', '5:4', '3:4', '21:9', '9:21'." - added
Input schema / properties / size / typeAdded value: +"string" - changed
Input schema / requiredPrevious value: -[ - "prompt" -]New value: +[ + "prompt", + "size" +]
2 tool updates
v0.1.7- Changed
flux_edit_image1 field changed- changed
Input schema / properties / model / enumPrevious value: -[ - "flux-dev", - "flux-pro", - "flux-kontext-pro", - "flux-kontext-max", - "flux-2-flex", - "flux-2-pro", - "flux-2-max" -]New value: +[ + "flux-dev", + "flux-pro", + "flux-kontext-pro", + "flux-kontext-max", + "flux-2-flex", + "flux-2-pro", + "flux-2-max", + "flux-2-klein" +]
- Changed
flux_generate_image2 fields changed- changed
Input schema / properties / model / descriptionPrevious value: -"Flux model to use for generation. Options:\n- flux-dev: Fast development model, good balance of speed and quality (default)\n- flux-pro: Higher quality production model\n- flux-2-flex: Flux 2 flexible model, pixel sizes (x >= 64, multiple of 32)\n- flux-2-pro: Flux 2 professional model, high quality\n- flux-2-max: Flux 2 maximum-quality model\n- flux-kontext-pro: Context-aware model for editing and style transfer\n- flux-kontext-max: Maximum context model for complex editing tasks"New value: +"Flux model to use for generation. Options:\n- flux-dev: Fast development model, good balance of speed and quality (default)\n- flux-pro: Higher quality production model\n- flux-2-flex: Flux 2 flexible model, pixel sizes (x >= 64, multiple of 32)\n- flux-2-pro: Flux 2 professional model, high quality\n- flux-2-max: Flux 2 maximum-quality model\n- flux-2-klein: Flux 2 klein model, efficient generation\n- flux-kontext-pro: Context-aware model for editing and style transfer\n- flux-kontext-max: Maximum context model for complex editing tasks" - changed
Input schema / properties / model / enumPrevious value: -[ - "flux-dev", - "flux-pro", - "flux-kontext-pro", - "flux-kontext-max", - "flux-2-flex", - "flux-2-pro", - "flux-2-max" -]New value: +[ + "flux-dev", + "flux-pro", + "flux-kontext-pro", + "flux-kontext-max", + "flux-2-flex", + "flux-2-pro", + "flux-2-max", + "flux-2-klein" +]
1 tool update
v0.1.6- Changed
flux_generate_image2 fields changed- changed
Input schema / properties / model / descriptionPrevious value: -"Flux model to use for generation. Options:\n- flux-dev: Fast development model, good balance of speed and quality (default)\n- flux-pro: Higher quality production model\n- flux-pro-1.1: Improved production model with better prompt following\n- flux-pro-1.1-ultra: Highest quality, supports aspect ratios instead of pixel sizes\n- flux-kontext-pro: Context-aware model for editing and style transfer\n- flux-kontext-max: Maximum context model for complex editing tasks"New value: +"Flux model to use for generation. Options:\n- flux-dev: Fast development model, good balance of speed and quality (default)\n- flux-pro: Higher quality production model\n- flux-2-flex: Flux 2 flexible model, pixel sizes (x >= 64, multiple of 32)\n- flux-2-pro: Flux 2 professional model, high quality\n- flux-2-max: Flux 2 maximum-quality model\n- flux-kontext-pro: Context-aware model for editing and style transfer\n- flux-kontext-max: Maximum context model for complex editing tasks" - changed
Input schema / properties / size / descriptionPrevious value: -"Image size. For flux-dev/pro/pro-1.1: pixel dimensions like '1024x1024' (256-1440px, multiples of 32). For flux-pro-1.1-ultra and kontext models: aspect ratios like '1:1', '16:9', '9:16', '4:3', '3:2', '2:3', '4:5', '5:4', '3:4', '21:9', '9:21'. Default varies by model."New value: +"Image size. For flux-dev: pixel dimensions like '1024x1024' (256-1440px, multiples of 32). For flux-2-flex/pro/max: pixel dimensions (x >= 64, multiples of 32). For kontext models: image ratios like '1:1', '16:9', '9:16', '4:3', '3:2', '2:3', '4:5', '5:4', '3:4', '21:9', '9:21'. Default varies by model."
6 tool updates
v0.1.3- Added
flux_edit_image - Added
flux_generate_image - Added
flux_get_task - Added
flux_get_tasks_batch - Added
flux_list_actions - Added
flux_list_models
6 tool updates
v0.1.2- Removed
flux_edit_image - Removed
flux_generate_image - Removed
flux_get_task - Removed
flux_get_tasks_batch - Removed
flux_list_actions - Removed
flux_list_models
6 tool updates
v0.1.0- First observed
flux_edit_image - First observed
flux_generate_image - First observed
flux_get_task - First observed
flux_get_tasks_batch - First observed
flux_list_actions - First observed
flux_list_models
TDQS
Each tool targets a distinct operation: generate vs edit, list models vs list tools, and single vs batch task queries. The cross-references in descriptions further reduce any chance of misselection.
All tools follow the consistent pattern of `flux_` prefix plus verb_noun (generate_image, list_models, get_task, etc.). The naming style is uniform and predictable across the entire set.
Six tools is well-scoped for an image generation and editing server, covering the core operations without unnecessary bloat. Each tool adds clear value to the workflow.
The core lifecycle of generating/editing images and retrieving results is well covered, along with model discovery. A minor gap is the lack of a task cancellation tool, but this is not essential for typical usage.
Maintenance
Resources
Unclaimed servers have limited discoverability.
Looking for Admin?
If you are the server author, to access and configure the admin panel.
Related MCP Connectors
AI image, video & music generation. Flux, Veo 3.1, Suno V5. Free tier included.
Generate, edit, and explore AI images. Flux, Imagen, LoRA identity swap, upscale, and more.
Best Image and video generation: 20+ models (Kling, Seedance, Veo, NB, FLUX.2), OAuth, pay-per-use.
Official FLUX MCP server. Generate, edit, vary, and browse images from Black Forest Labs.
Related MCP Servers
- AlicenseBqualityDmaintenanceA server that integrates Flux's advanced image generation and manipulation features into AI coding assistants, enabling seamless text-to-image and image control workflows in IDEs like Cursor and Windsurf.41725MIT
- AlicenseNot gradedqualityDmaintenancePowerful image generation system leveraging multiple Stable Diffusion models (flux-schnell, flux-dev, sdxl, sd3, sd15) for creating high-quality AI-generated images with precise customization.19MIT
- AlicenseBqualityFmaintenanceEnables seamless integration with Fal.ai's 600+ image generation models including Flux and Stable Diffusion. Supports real-time streaming, workflow execution, and unified access to AI image generation through natural language.525MIT
- AlicenseAqualityDmaintenanceEnables AI image generation using FLUX models through ComfyUI with GPU acceleration, supporting image generation, 4x upscaling, and background removal with optimized Docker deployment.64MIT
Latest Blog Posts
- Who's Calling? MCP Hosts Are an Identity Blind Spot (And the Spec Knows It)By Om-Shree-0709 on .mcpAgent IdentityOAuth 2.1
- Your AI Chatbot Just Exposed Your CEO's Salary to an InternBy Om-Shree-0709 on .Agent IdentityMCP SecurityOAuth Delegation
- Why MCP Servers Need Execution Sandboxing (And Why Your Current Stack Isn't Enough)By Om-Shree-0709 on .Agentic AiPrompt InjectionWebAssembly
MCP directory API
We provide all the information about MCP servers via our MCP API.
curl -X GET 'https://glama.ai/api/mcp/v1/servers/AceDataCloud/FluxMCP'
If you have feedback or need assistance with the MCP directory API, please join our Discord server