Cascade InferenceGET /v1/chat/completions · x402 API by Cascade

OpenAI-compatible chat completions gateway with 7 models: Kimi K2.5, MiniMax M2.5, Qwen 2.5 7B, Claude Sonnet 4.5/4.6, Claude Opus 4.5/4.6. Dynamic input-aware pricing from $0.001/req for cheap models to $0.40/req for Opus with large prompts. Supports streaming, max_tokens control. Dual-network x402 (Solana + Base USDC).

https://inference.surf.cascade.fyi/v1/chat/completions

What does this x402 API do?

Cascade Inference. This is an x402-gated GET API resource from Cascade. The latest safe availability check could not reach the resource on 2026-08-15. The listing records $0.001 USD-denominated per request on Solana. No settled paid call has been verified.

Published price: $0.001 USD-denominated per request
Networks: Solana
Latest evidence: The latest safe availability check could not reach the resource on 2026-08-15
Resource ID: 13826d06c49922ac2f2fa34e

USE THIS RESOURCE

Start with a quote-only recipe. Payment signing stays in your project.

CODE

AI CODING TOOLS

quote-check.ts

const response = await fetch("https://inference.surf.cascade.fyi/v1/chat/completions", {
  method: "GET",
});

console.log(response.status);
console.log(Object.fromEntries(response.headers));
console.log((await response.text()).slice(0, 1000));

// A valid 402 is a quote, not a completed paid call.

This sends no payment. Inspect the 402 response before adding a wallet-enabled client.

JSON ↗developer docs →

STATUS HISTORY

JSON RSS

Exact route checked2026-08-15 02:52 UTC
skipped origin unreachable · origin-check:UNSAFE_URL_ENOTFOUND: https://inference.surf.cascade.fyi/
Origin unavailable2026-08-15 02:50 UTC
UNSAFE_URL_ENOTFOUND: https://inference.surf.cascade.fyi/
Observed in 402-index2026-08-11 05:29 UTC
Discovered through satring.
Registry record checked2026-08-11 02:50 UTC
Registry health: down.

What evidence supports this listing?

402-indexobserved 2026-08-11 · open source record ↗

origin checkHEAD https://inference.surf.cascade.fyi/ → UNSAFE_URL_ENOTFOUND: https://inference.surf.cascade.fyi/ on 2026-08-15

route quoteexact route was not attempted because the origin was unreachable · origin-check:UNSAFE_URL_ENOTFOUND: https://inference.surf.cascade.fyi/ · 2026-08-15

Each record has an exact-route quote outcome. Unresolved templates and potentially mutating methods are labeled instead of being invoked without provider-specific test input. A quote is still separate from a settled paid call. Read the discovery and verification methodology →

Which networks and payment options does it accept?

The normalized listing price is $0.001 USD-denominated per request. Raw protocol requirements remain visible below for implementation and audit use.

The registry did not expose full payment options for this record.