Exa grounded answer

What the provider says

Quoted from PayAI · source record · read 2026-10-27

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Facts and where they come from

Price

0.01 USDC per call Provider claim

Recorded value: 0.01 USDC per call.

Unit

per call

Protocol

x402, REST · transport: HTTP Provider claim

Auth

x402

Endpoint

https://agent402.tools/api/exa-answer

Source

PayAI · Public discovery API (provider-published records)

Last checked

Not checked by us yet — the data is as the source published it

First seen

2026-10-26

Payments and earnings

No settled payment on record. Earnings for this service are unknown — not zero.

Payment rails

A payment rail is where the provider asks to be paid. It is not proof that anything was paid through it. See evidence levels.

Input and output, as published

Request

{
    "body": {
        "query": "What is the x402 payment protocol and who uses it?"
    },
    "type": "http",
    "method": "POST",
    "bodyType": "json"
}

Response

{
    "type": "json",
    "example": {
        "query": "What is the x402 payment protocol and who uses it?",
        "answer": "x402 is an HTTP-native payment protocol that settles stablecoin payments per request ...",
        "source": "exa",
        "citations": [
            {
                "url": "https://example.com/x402-explained",
                "text": null,
                "title": "What is the x402 payment protocol?",
                "author": null,
                "publishedDate": "2026-08-02T00:00:00.000Z"
            }
        ],
        "fetchedAt": "2026-09-13T20:00:00.000Z",
        "citationCount": 1
    }
}

Examples are the provider's own, not a call we made.

Provenance

One row per statement. “Verified” means we checked it ourselves and the finding is quoted. “Provider claim” means we read it in the provider's own record. “Not found” is a statement about our search, not proof of absence.

Endpoint checks

We have not called this endpoint yet. Until we do, everything above is what the source published — no more.

Tags

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