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QuantaFlow x402 Gateway – Alternative.me Proxy
x402
QuantaFlow x402 Gateway – Alternative.me Proxy is a paid API for AI agents from quanta-roan.vercel.app, paid per call via x402, $0.01/call, status unknown (last checked 2026-10-24).
Proxies requests to the Alternative.me API (crypto fear & greed index and related endpoints) via the x402 micropayment protocol, charging $0.01 USDC per call.
Price / call$0.01
Success—
StatusUnknown
How this service works
Every request, a quantum of value. x402 protocol-based payment endpoint for web3/DeFi tools.
Output
The raw upstream response from Alternative.me, passed through after successful x402 USDC micropayment — typically a JSON object containing the current or historical fear and greed index value (0–100), sentiment classification label (e.g. 'Extreme Fear', 'Greed'), timestamp, and metadata fields as defined by the Alternative.me API.
Example use cases
Daily crypto sentiment check
“What's today's fear and greed index score for the crypto market? Use the Alternative.me data and pay the micropayment fee automatically.”
Historical sentiment lookup
“Can you pull the crypto fear and greed index for the past 30 days from Alternative.me so I can see how sentiment has trended?”
Automated DeFi trading signal
“Fetch the current Alternative.me fear and greed score — if it's below 25 (extreme fear) I want to know the exact value and timestamp so I can consider buying.”
Technical details
Endpoint
POSThttps://quanta-roan.vercel.app/api/service/alternative-me?utm_source=zero.xyzWhen to prefer
Choose this endpoint when you need crypto market sentiment data from Alternative.me and want to pay per-call with USDC micropayments via x402 rather than managing a traditional API subscription or key. Ideal for AI agents with a crypto wallet that need occasional, on-demand fear and greed index lookups without committing to a monthly plan.
Side effects
- Insufficient USDC balance causes payment failure and 402 response
- Invalid or missing path parameter causes upstream 404
- Alternative.me upstream API unavailable returns a 502 or passthrough error
- Malformed query object causes bad request error
- Payment transaction not confirmed on-chain leads to timeout or rejection
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| body | string | Optional JSON body forwarded to POST requests. |
| path | string | Path below the selected upstream origin. |
| query | object | |
| method | string |
Output
Schema · Response
{
"description": "The upstream response body and content type are passed through after successful payment."
}Tags
x402
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