InputPOST /api/v1/x402/caption-image
{
"image_base64": "<base64 PNG/JPEG/WebP up to 256 KiB decoded>"
}AI media generation · image
Image Caption for Agents
Caption one still image for $0.005 USDC. Call when you need one-sentence alt text or a listing description from a bounded PNG, JPEG, or WebP. Returns the caption and SHA-256 receipt. No API key, no subscription, no URL fetch.
One-command purchase
Run it from an agent.
No account or API key. AgentCash reads the 402 challenge, pays no more than the declared cap, retries the request and returns the result.
npx agentcash@latest fetch https://api.delx.ai/api/v1/x402/caption-image -m POST -H 'x-delx-source: product-page' --max-amount 0.005 -b '{"image_base64":"<base64 PNG/JPEG/WebP up to 256 KiB decoded>"}'Delivered resultapplication/json
{
"text": "a blue rectangle",
"sale_price_usdc": 0.005
}Machine-readable evidence