Observed arrival · 2026-09-18

Prompt402 Turns Video Generation Into a Pay-Per-Request API

prompt402.com Visit website

Editorial interest 78/100 Selection signal · not a rating of the site

Prompt402 proxies Higgsfield’s Seedance 2.5 text-to-video model through an asynchronous API paid per request in USDC.

Landing page captured for the 2026-09-18 issue.

For: Developers and AI agents paying for video generation
Worth noticing: Each request uses a live upstream estimate, adds a fixed 10% markup, and rounds to micro-USDC.

Field notes

The service uses HTTP 402 as an actual payment challenge rather than routing developers through a proprietary checkout. Its documented sequence is quote, sign, settle, submit, and poll, with a 60-second estimate cache and an Idempotency-Key on requests. The homepage limits the proxy to specified Higgsfield operations, including Seedance 2.5 text-to-video, and distinguishes Base mainnet production payments from Base Sepolia development testing.

Observed signals

Read the marks

Editorial observations of this landing page, not a rating.

○OpenPublic substance visible

$PaidCommerce or pricing visible

✦PrettyNotable craft visible

●ProPolished or operationally mature

◎NicheUnusually specific use

ƒJavaScriptBrowser-side code central

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