Observed arrival · 2026-09-15
Prismux puts a receipt beside every model request
A model-routing API unifies frontier, open-weight, and local models while returning a signed, content-free receipt for each request.
Field notes
The page models a request that first fails against Anthropic with HTTP 429 and then succeeds through Bedrock in eu-central-1, displaying token counts, provider cost, margin, and the final charge. Its receipt demo builds a synthetic three-record SHA-256 chain entirely in the browser; visitors can alter the sample and watch verification fail. The site states that production receipts additionally carry an Ed25519 signature checked by prism verify --keys, while API access is currently issued by arrangement.
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