API · x402

Live fiat FX spot rate + conversion for a currency pair

Name: Live fiat FX spot rate + conversion for a currency pair
Price: 0.01 USD
Availability: InStock

Live fiat FX spot rate + conversion for a currency pair. Price: $0.01 USDC on Base, Monad, Arbitrum, Optimism, Polygon, Avalanche or Solana.

by x402-spot-prices.hsharmanov02.workers.dev · verified provider · updated 2026-09-30

What it does

Live fiat FX spot rate + conversion for a currency pair. Price: $0.01 USDC on Base, Monad, Arbitrum, Optimism, Polygon, Avalanche or Solana.

Use with an agent

Discover. Agents find this listing with GET https://bazaar.saylorinnovations.com/discovery/search?query=…, the MCP tool search_resources, or /discovery/resources.
Inspect. Fetch /resources/20443.json for the price and payment options.
Pay. Call GET https://x402-spot-prices.hsharmanov02.workers.dev/fx. The provider answers 402 with its payment requirements. An x402 client signs one of the options below and retries with PAYMENT-SIGNATURE.
Execute. The provider returns 200 with the data. Agent Bazaar is not in the request path and never sees your payment.

For humans

You don't need an account or an API key; you need a wallet holding a small amount of USDC on Base, eip155:143, Arbitrum One, Optimism, Polygon, Avalanche, Solana, and an x402-capable client (see the examples below). Call the endpoint unpaid first to see exactly what it asks for.

Pricing & payment

Price: $0.01 / request
Protocol: x402 v2
Auth: No account or API key. Pay per request.
Networks: Base, eip155:143, Arbitrum One, Optimism, Polygon, Avalanche, Solana

x402 payment requirements

Scheme	Network	Asset	Amount	Pay to	Timeout
exact	Base eip155:8453	USDC	$0.01	0x48Cda0da34816Db1F997C3D3b167a4f6af850CB2	300s
exact	eip155:143 eip155:143	0x754704Bc059F8C67012fEd69BC8A327a5aafb603	10000	0x48Cda0da34816Db1F997C3D3b167a4f6af850CB2	300s
exact	Arbitrum One eip155:42161	USDC	10000	0x48Cda0da34816Db1F997C3D3b167a4f6af850CB2	300s
exact	Optimism eip155:10	0x0b2C639c533813f4Aa9D7837CAf62653d097Ff85	10000	0x48Cda0da34816Db1F997C3D3b167a4f6af850CB2	300s
exact	Polygon eip155:137	USDC	$0.01	0x48Cda0da34816Db1F997C3D3b167a4f6af850CB2	300s
exact	Avalanche eip155:43114	0xB97EF9Ef8734C71904D8002F8b6Bc66Dd9c48a6E	10000	0x48Cda0da34816Db1F997C3D3b167a4f6af850CB2	300s
exact	Solana solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp	USDC	$0.01	H52Hvds6YUyp81eCUDuNknfmSKzYyBETSRW6k1Pj2VPw	300s

accepts[] (raw JSON)

[
  {
    "scheme": "exact",
    "network": "eip155:8453",
    "payTo": "0x48Cda0da34816Db1F997C3D3b167a4f6af850CB2",
    "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
    "amount": "10000",
    "amountUsd": 0.01,
    "maxTimeoutSeconds": 300
  },
  {
    "scheme": "exact",
    "network": "eip155:143",
    "payTo": "0x48Cda0da34816Db1F997C3D3b167a4f6af850CB2",
    "asset": "0x754704Bc059F8C67012fEd69BC8A327a5aafb603",
    "amount": "10000",
    "maxTimeoutSeconds": 300
  },
  {
    "scheme": "exact",
    "network": "eip155:42161",
    "payTo": "0x48Cda0da34816Db1F997C3D3b167a4f6af850CB2",
    "asset": "0xaf88d065E77c8cC2239327C5EDb3A432268e5831",
    "amount": "10000",
    "maxTimeoutSeconds": 300
  },
  {
    "scheme": "exact",
    "network": "eip155:10",
    "payTo": "0x48Cda0da34816Db1F997C3D3b167a4f6af850CB2",
    "asset": "0x0b2C639c533813f4Aa9D7837CAf62653d097Ff85",
    "amount": "10000",
    "maxTimeoutSeconds": 300
  },
  {
    "scheme": "exact",
    "network": "eip155:137",
    "payTo": "0x48Cda0da34816Db1F997C3D3b167a4f6af850CB2",
    "asset": "0x3c499c542cEF5E3811e1192ce70d8cC03d5c3359",
    "amount": "10000",
    "amountUsd": 0.01,
    "maxTimeoutSeconds": 300
  },
  {
    "scheme": "exact",
    "network": "eip155:43114",
    "payTo": "0x48Cda0da34816Db1F997C3D3b167a4f6af850CB2",
    "asset": "0xB97EF9Ef8734C71904D8002F8b6Bc66Dd9c48a6E",
    "amount": "10000",
    "maxTimeoutSeconds": 300
  },
  {
    "scheme": "exact",
    "network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
    "payTo": "H52Hvds6YUyp81eCUDuNknfmSKzYyBETSRW6k1Pj2VPw",
    "asset": "EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",
    "amount": "10000",
    "amountUsd": 0.01,
    "maxTimeoutSeconds": 300
  }
]

Examples

curl

curl "https://x402-spot-prices.hsharmanov02.workers.dev/fx"
# -> 402 Payment Required, accepts[] lists how to pay
# retry with a PAYMENT-SIGNATURE (or PAYMENT header) once paid

JavaScript

const res = await fetch("https://x402-spot-prices.hsharmanov02.workers.dev/fx");
if (res.status === 402) {
  const { accepts } = await res.json();
  // pay one of accepts[] via an x402 client, then retry with the payment header
}

Python

import httpx
res = httpx.get("https://x402-spot-prices.hsharmanov02.workers.dev/fx")
if res.status_code == 402:
    accepts = res.json()["accepts"]
    # pay one of accepts[] via an x402 client, then retry with the payment header

Details

Provider: x402-spot-prices.hsharmanov02.workers.dev
Endpoint: https://x402-spot-prices.hsharmanov02.workers.dev/fx
Machine-readable: /resources/20443.json