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fastapi.online Image Sepia Filter
x402
fastapi.online Image Sepia Filter is a paid API for AI agents from api.fastapi.online, paid per call via x402, $0.001/call, status down (last checked 2026-09-15).
Applies a sepia tone filter to an uploaded image, converting it to a warm brownish vintage look
Price / call$0.001
Success—
StatusDown
How this service works
Chat, embeddings, OCR, speech-to-text, image editing, image understanding (captioning/Q&A), text-to-speech, translation, writing tools, classification tools, developer tools, local utilities, format/checksum validators, encoding & crypto utilities, date/time calculators, geo/coordinate math, math & finance calculators, novelty tools, and business/social writing generators — 179 endpoints in all, across multiple specialized self-hosted models. Pay per call with crypto — no signup — or get an API key.
Output
Returns a sepia-toned version of the uploaded image file, with the original colors replaced by warm brownish tones characteristic of vintage photography. The output is an image file in the same or compatible format.
Example use cases
Vintage photo effect for portfolio
“I want to give my portrait photo a warm, old-fashioned sepia tone for my photography portfolio — can you run it through the sepia filter?”
Retro aesthetic for social media post
“Take this landscape photo and apply a sepia filter to it so it looks like an antique photograph — I want to post it with a retro theme.”
Batch product image styling
“I have a product image I need converted to sepia tone to match the vintage branding style we're using for our store — can you process it?”
Technical details
Endpoint
POSThttps://api.fastapi.online/image-sepiaWhen to prefer
Choose this endpoint when you need a simple, fast, pay-per-call sepia conversion without signup or infrastructure overhead. Ideal for agents that occasionally need to stylize images with a vintage look on demand using crypto micropayments. Prefer this over general-purpose image editing APIs when you want a dedicated, lightweight filter endpoint with no subscription commitment.
Side effects
- Unsupported file format — only PNG, JPEG, and WebP are accepted; other formats will be rejected
- File too large — oversized uploads may be rejected or time out
- Corrupted or invalid image binary — will return an error if the file cannot be decoded
- Payment failure — if the $0.001 USDC x402 payment is not completed, the request will be denied
- Empty or missing file field — request will fail without the required image binary
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| file | string | Image file (PNG/JPEG/WebP) |
Tags
x402
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