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BlockRun Image Generation
x402
BlockRun Image Generation is a paid API for AI agents from blockrun.ai, paid per call via x402, $0.04/call, status unknown (last checked 2026-09-13).
Generates AI images from a text prompt via a pay-per-call gateway, settled in USDC on Base or Solana, with no API key required.
Price / call$0.04
Success—
StatusUnknown
How this service works
Pay for the outcome. One endpoint for every model, tool and data source an agent needs — each call priced before it runs, at the best value per dollar. 103 models and 100 data and tool APIs.
Output
Returns one or more AI-generated images (as URLs or base64 data) based on the provided text prompt, using the specified model and dimensions. The call costs $0.04 USDC per invocation, settled on Base or Solana.
Example use cases
Example prompt
“Generate 2 images of a futuristic cyberpunk cityscape at night, 1024x1024, using the openai/gpt-image-1 model.”
Technical details
Endpoint
POSThttps://blockrun.ai/api/v1/images/generationsWhen to prefer
Choose this endpoint when you need AI image generation without managing API keys, want crypto-native pay-per-call billing settled in USDC on Base or Solana, or are building an agent pipeline (OpenClaw, Claude Code, Franklin Agent) that requires a single unified gateway for multiple AI capabilities.
Side effects
- Insufficient USDC balance — payment not settled, 402 Payment Required returned
- Invalid model ID — unrecognized model string causes a 400 Bad Request
- Invalid size format — unsupported dimension string causes a 400 error
- Prompt content policy violation — prompt rejected for unsafe or disallowed content
- Network or gateway timeout — upstream model takes too long, 504 returned
Input
{
"n": 1,
"size": "1024x1024",
"model": "openai/gpt-image-1",
"prompt": "A serene landscape with mountains and a clear blue sky"
}Schema · Request body
| Field | Type | Description |
|---|---|---|
| n | integer | Number of images to generate |
| size | string | Image dimensions (e.g., 1024x1024) |
| model | string | Image model ID (e.g., openai/gpt-image-1, openai/gpt-image-2) |
| prompt | string | Text description of the image to generate |
Output
{
"n": 1,
"id": "38afb1c0-7659-43c9-a402-07beb0fe5da3",
"size": "1024x1024",
"model": "openai/gpt-image-1",
"price": {
"amount": "0.021000",
"currency": "USD"
},
"object": "image.generation.job",
"status": "queued",
"created": 1781241059,
"poll_url": "/api/v1/images/generations/38afb1c0-7659-43c9-a402-07beb0fe5da3",
"payment_status": "verified",
"poll_instructions": "Slow model — generation exceeded the 30s inline window. Send GET to poll_url with an x-payment header signed by the SAME wallet that submitted this POST. A fresh signature works — we enforce wallet binding, not signature byte-equality. The poll endpoint returns its own 402 challenge if no header is sent, so x402 clients can re-sign automatically. Expect status queued/in_progress, then completed; we settle and return the image URL on the first completed poll."
}Tags
x402
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Zero review prompt (fires after every successful call)
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