- name
- nova-canvas
- description
- >-
- methods
- environment variables, credentials file, named profiles, IAM instance roles,
Nova Canvas
Generate images via Amazon Nova Canvas on AWS Bedrock.
AWS Auth Methods
| Method | How to Use |
|---|---|
| Bearer token | AWS_BEARER_TOKEN_BEDROCK env var or --bearer-token |
| Environment variables | Set AWS_ACCESS_KEY_ID + AWS_SECRET_ACCESS_KEY |
| Credentials file | Configure ~/.aws/credentials |
| Named profile | --profile my-profile or AWS_PROFILE env var |
| Direct keys | --access-key AKIA... --secret-key ... |
| Temporary credentials | Add --session-token with direct keys |
| IAM instance role | Auto-detected on EC2/ECS/Lambda |
| AWS SSO | Run aws sso login first |
Auto-detection order: direct keys → profile → bearer token → env vars → credentials file → instance role → SSO.
Quick Start
python3 {baseDir}/scripts/generate.py "your prompt" -o output.png
python3 {baseDir}/scripts/generate.py "your prompt" -o output.png --profile work
python3 {baseDir}/scripts/generate.py "your prompt" -o output.png --access-key AKIA... --secret-key ...Parameters
| Flag | Default | Description |
|---|---|---|
prompt | — | Text description of the image |
-o, --output | output.png | Output file path |
-W, --width | 1024 | Width 512-4096, divisible by 64 |
-H, --height | 1024 | Height 512-4096, divisible by 64 |
-n, --count | 1 | Number of images (1-5) |
-q, --quality | standard | standard or premium |
-s, --seed | random | Seed for reproducibility |
--negative | — | Negative prompt (what to avoid) |
--cfg | 8.0 | CFG scale 1.1-10.0 |
--region | us-east-1 | AWS region |
--profile | — | AWS named profile |
--access-key | — | AWS Access Key ID |
--secret-key | — | AWS Secret Access Key |
--session-token | — | AWS Session Token |
--bearer-token | — | Bearer token (overrides env) |
Workflow
- Craft a detailed English prompt (Nova Canvas performs best in English).
- Choose size: square 1024×1024, landscape 1280×768, portrait 768×1280.
- Run
generate.pywithtimeout=120. - Send resulting image to user via
messagetool.
Prompt Tips
- Detailed English prompts yield best results.
- Specify style: "oil painting", "watercolor", "3D render", "photograph", "anime".
- Use
--negative "blurry, low quality, text, watermark"to exclude unwanted elements.