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meld402 FX Quote Pro
x402
meld402 FX Quote Pro is a paid API for AI agents from meld402.vercel.app, paid per call via x402, $0.05/call, status unknown (last checked 2026-09-15).
Converts a currency amount between any fiat or crypto pair using aggregated sources (Twelve Data, ExchangeRate, CoinGecko) and returns a unified rate with attribution metadata.
Price / call$0.05
Success—
StatusUnknown
How this service works
14 paid data endpoints for autonomous agents and developers. Covers crypto intelligence (token, chain, Solana, gas), markets (FX, market pulse), location (weather), and research (news, brief). Each route aggregates multiple public sources into one stable schema with a single USDC payment over x402 on Base.
Output
Returns a JSON object with the exchange rate, converted amount, bid/ask prices, spread, timestamp, and the source that provided the data (e.g. Twelve Data). Also includes metadata with an as-of timestamp, list of sources queried, any degraded sources, and data attribution strings.
Example use cases
Cross-border payment pre-calculation
“I'm about to send 2500 USD to a supplier in Japan — what's the current USD to JPY rate and how much will they receive in yen?”
Crypto portfolio fiat valuation
“Get me the current BTC to EUR exchange rate so I can calculate the euro value of my bitcoin holdings.”
Travel budget currency check
“I'm heading to the UK next week — what's the current conversion rate from USD to GBP for 1000 dollars?”
Technical details
Endpoint
POSThttps://meld402.vercel.app/api/fx/quote-proWhen to prefer
Choose this endpoint when you need a reliable, aggregated FX or crypto conversion rate with a single USDC micropayment rather than managing multiple API keys for Twelve Data, ExchangeRate, or CoinGecko yourself. Ideal for autonomous agents that need stable schema responses across fiat and crypto pairs without building source-fallback logic. Prefer over raw provider APIs when you want automatic source selection, attribution metadata, and a unified response format.
Side effects
- Invalid or unsupported currency code returns a validation error
- Requested source (e.g. twelvedata) is unavailable and no fallback is possible — returns degraded or error response
- Amount of 0 or negative is rejected by schema validation
- Rate data may be stale if all upstream sources are delayed — check timestamp in response
- Network timeout from upstream providers causes slow or failed response
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| to | string | Target currency (ISO 4217 fiat code or crypto symbol) |
| from | string | Source currency (ISO 4217 fiat code or crypto symbol) |
| amount | number | Amount to convert |
| source | string | Force specific source |
Output
Schema · Response
{
"type": "json",
"example": {
"data": {
"to": "EUR",
"ask": null,
"bid": null,
"from": "BTC",
"rate": 66291.14,
"amount": 1,
"result": 66291.14,
"source": "twelvedata",
"spread": null,
"timestamp": "2026-08-23T21:00:00.000Z"
},
"meta": {
"as_of": "2026-08-24T00:00:00.000Z",
"sources": [
"twelvedata"
],
"degraded": [],
"attribution": [
"FX rates by Twelve Data (twelvedata.com)"
]
}
}
}Tags
x402
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