Stable Diffusion 3.5 Large text-to-image generation via fal.ai, pay-per-call over Tempo MPP
What it does
This endpoint wraps fal.ai's Stable Diffusion 3.5 Large (MMDiT architecture) text-to-image model behind a Tempo MPP (Micropayment Protocol) paywall. Stable Diffusion 3.5 Large is a high-quality open-weight diffusion model capable of generating images from text prompts, using the MMDiT (Multi-Modal Diffusion Transformer) architecture for improved prompt adherence and image quality.
The endpoint is hosted at fal.mpp.tempo.xyz and is intended to settle payments in pathUSD on the Tempo L2 network. However, during probing the endpoint returned HTTP 404 on both HEAD and GET requests rather than the expected 402 MPP challenge. The root domain and all documentation paths also return 404, suggesting the endpoint may not currently be live or may have been moved. No OpenAPI schema, pricing details, or usage documentation were found.
Because fal.ai offers over 600 generative AI models and Stable Diffusion 3.5 Large is a well-known model, the underlying capability is established — but the specific MPP-wrapped endpoint could not be verified as operational at the time of probing.
Capabilities
Use cases
- —Generating images from text prompts with high prompt adherence
- —Creating artwork or design assets using Stable Diffusion 3.5 Large
- —Agent-driven image generation with per-call micropayments
Fit
Best for
- —Developers wanting pay-per-call image generation without API keys
- —AI agents that need on-demand text-to-image capabilities
- —Projects requiring high-quality diffusion model outputs via micropayments
Not for
- —Production workloads requiring guaranteed uptime (endpoint not verified as live)
- —Users needing detailed API documentation or schema validation
Quick start
# Endpoint expected to return 402 MPP challenge; currently returning 404.
# When live, a Tempo MPP client would negotiate payment automatically.
curl -X POST https://fal.mpp.tempo.xyz/fal-ai/stable-diffusion-v35-large \
-H 'Content-Type: application/json' \
-d '{"prompt": "a cat sitting on a rainbow"}'Example
Request
{
"prompt": "a cat sitting on a rainbow",
"image_size": "1024x1024"
}Endpoint
Quality
The endpoint returned 404 on all probe attempts (HEAD and GET) rather than the expected 402 MPP challenge. No documentation, schema, pricing, or examples were found. The listing is essentially a stub based on the existing title/description and general knowledge of SD 3.5 Large.
Warnings
- —Endpoint returned HTTP 404 on both HEAD and GET — not currently returning an MPP 402 challenge
- —Root domain and all documentation paths return 404
- —No pricing information available
- —No OpenAPI or output schema found
- —Endpoint may have been moved or decommissioned
- —Example request JSON is inferred from general fal.ai patterns, not from actual schema
Citations
- —fal.ai offers 600+ generative AI models including Flux, SD, Recraft, and Grokhttps://fal.mpp.tempo.xyz/fal-ai/stable-diffusion-v35-large
- —Endpoint returned 404 on HEAD and GET probe attemptshttps://fal.mpp.tempo.xyz/fal-ai/stable-diffusion-v35-large