Amazon Bedrock Nova Canvas

A Model Control Protocol (MCP) server that integrates with Amazon Bedrock's Nova Canvas model for AI image generation.
Features
- High-quality image generation from text descriptions using Amazon's Nova Canvas model
- Advanced control through negative prompts to refine image composition
- Flexible configuration options for image dimensions and quality
- Deterministic image generation with seed control
- Robust input validation and error handling
Prerequisites
1. Active AWS account with Amazon Bedrock and Nova Canvas model access
2. Properly configured AWS credentials with required permissions
3. Node.js version 18 or later
Installation
AWS Credentials Configuration
The server requires AWS credentials with appropriate Amazon Bedrock permissions. Configure these using one of the following methods:
1. Environment variables:
2. AWS credentials file (~/.aws/credentials):
Environment variable for active profile:
3. IAM role (when deployed on AWS infrastructure)
Claude Desktop Integration
To integrate with Claude Desktop, add the following configuration to your settings file:
MacOS: ~/Library/Application Support/Claude/claude_desktop_config.json
Windows: %APPDATA%/Claude/claude_desktop_config.json
Available Tools
generate_image
Creates images from text descriptions using Amazon Bedrock's Nova Canvas model.
Parameters
- prompt (required): Descriptive text for the desired image (1-1024 characters)
- negativePrompt (optional): Elements to exclude from the image (1-1024 characters)
- width (optional): Image width in pixels (default: 1024)
- height (optional): Image height in pixels (default: 1024)
- quality (optional): Image quality level - "standard" or "premium" (default: "standard")
- cfg_scale (optional): Prompt adherence strength (1.1-10, default: 6.5)
- seed (optional): Generation seed for reproducibility (0-858993459, default: 12)
- numberOfImages (optional): Batch size for generation (1-5, default: 1)
Example Implementation
Prompt Guidelines
For optimal results, avoid negative phrasing ("no", "not", "without") in the main prompt. Instead, move these elements to the negativePrompt parameter. For example, rather than using "a landscape without buildings" in the prompt, use "buildings" in the negativePrompt.
For detailed usage guidelines, refer to the [Nova Canvas documentation][nova-canvas-doc].