openclaw - ✅(Solved) Fix image_generate: Add OpenRouter provider support for image generation models [1 pull requests, 2 comments, 3 participants]

openclaw2026-03-26 09:27:04

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openclaw/openclaw#55066•Fetched 2026-04-08 01:32:56

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The built-in image_generate tool currently only supports Google (Gemini) and OpenAI (gpt-image-1) as image generation providers. It does not support using image generation models available through OpenRouter, even when OpenRouter is configured as the primary LLM provider.

Root Cause

Code Example

google (default gemini-3.1-flash-image-preview)
  models: gemini-3.1-flash-image-preview, gemini-3-pro-image-preview
openai (default gpt-image-1)
  models: gpt-image-1

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Summary

Current Behavior

Running image_generate(action="list") returns only two providers:

google (default gemini-3.1-flash-image-preview)
  models: gemini-3.1-flash-image-preview, gemini-3-pro-image-preview
openai (default gpt-image-1)
  models: gpt-image-1

There is no way to use OpenRouter-hosted image generation models (e.g. openai/gpt-image-1, google/gemini-3.1-flash-image-preview, or other image-capable models) through the image_generate tool, even when OPENROUTER_API_KEY is set and OpenRouter is used as the default model provider.

Expected Behavior

image_generate should support OpenRouter as a provider, allowing users to:

Use image generation models available on OpenRouter (e.g. openrouter/openai/gpt-image-1)
Leverage existing OpenRouter API keys without needing separate provider-specific API keys
Configure via agents.defaults.imageGenerationModel.primary with an openrouter/* prefix

Motivation

Many users route all their model traffic through OpenRouter for unified billing, API key management, and access to a wider selection of models. Being forced to set up separate Google/OpenAI API keys just for image generation breaks this workflow.

extent analysis

Fix Plan

To add support for OpenRouter as an image generation provider, we need to make the following changes:

Update the image_generate tool to recognize OpenRouter as a valid provider
Add support for OpenRouter API keys and model prefixes

Code Changes

# Add OpenRouter as a supported provider
SUPPORTED_PROVIDERS = ['google', 'openai', 'openrouter']

# Update the image_generate function to handle OpenRouter models
def image_generate(action, provider=None, model=None):
    if provider == 'openrouter':
        # Use the OpenRouter API key and model prefix
        api_key = os.environ.get('OPENROUTER_API_KEY')
        model_prefix = 'openrouter/'
        # ... (rest of the function remains the same)

# Update the list action to include OpenRouter models
def list_providers():
    providers = []
    for provider in SUPPORTED_PROVIDERS:
        if provider == 'openrouter':
            # List OpenRouter models using the OpenRouter API
            models = get_openrouter_models(api_key)
            providers.append({'provider': provider, 'models': models})
        # ... (rest of the function remains the same)

# Helper function to get OpenRouter models
def get_openrouter_models(api_key):
    # Use the OpenRouter API to list available models
    response = requests.get('https://api.openrouter.com/models', headers={'Authorization': f'Bearer {api_key}'})
    return [model['name'] for model in response.json()]

Configuration Changes

Add an openrouter prefix to the agents.defaults.imageGenerationModel.primary configuration option to use OpenRouter as the primary image generation provider.

Verification

Run image_generate(action="list") to verify that OpenRouter is listed as a supported provider
Run image_generate(action="generate", provider="openrouter", model="openai/gpt-image-1") to verify that image generation works with OpenRouter models

Extra Tips

Make sure to set the OPENROUTER_API_KEY environment variable to use OpenRouter as the primary image generation provider.
Update the documentation to reflect the new support for OpenRouter as an image generation provider.

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openclaw - ✅(Solved) Fix image_generate: Add OpenRouter provider support for image generation models [1 pull requests, 2 comments, 3 participants]

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Root Cause

PR fix notes

PR #67668: feat(openrouter): add image generation provider

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