chain-dataGET /pro/gas · x402 API by chain-data-mcp.vercel.app

Live multi-chain on-chain data for AI agents: wallet portfolio, token info, gas, prices across 5 chains.

https://chain-data-mcp.vercel.app/pro/gas?chain=base

What does this x402 API do?

chain-data. This is an x402-gated GET API resource from chain-data-mcp.vercel.app. The latest safe exact-route check returned HTTP 404 on 2026-08-04. The listing records $0.1 USD-denominated per request on Base. No settled paid call has been verified.

Published price: $0.1 USD-denominated per request
Networks: Base
Latest evidence: The latest safe exact-route check returned HTTP 404 on 2026-08-04
Resource ID: b20103e8b3355f16716388c5

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://chain-data-mcp.vercel.app/pro/gas?chain=base", {
  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 checked2026-08-04 06:40 UTC
non 402
Origin reachable2026-08-04 06:37 UTC
HEAD https://chain-data-mcp.vercel.app/ returned 404.
Observed in 402-index2026-07-10 13:31 UTC
Discovered through self-registered.
Registry record checked2026-07-08 01:21 UTC
Registry health: degraded.

What evidence supports this listing?

402-indexobserved 2026-07-10 · open source record ↗

origin checkHEAD https://chain-data-mcp.vercel.app/ → 404 on 2026-08-04

route quoteGET returned 404; no x402 quote was confirmed · 2026-08-04

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 $0.1 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.