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Obol USDC/USD Spot Price Feed
x402
Obol USDC/USD Spot Price Feed is a paid API for AI agents from obol-x402.fly.dev, paid per call via x402, $0.01/call, status down (last checked 2026-09-15).
Returns the current USDC/USD spot price aggregated from Coinbase and Kraken, with a divergence flag and cryptographic Ed25519 signature on every response.
Price / call$0.01
Success—
StatusDown
How this service works
USDC USD spot price stablecoin quote Coinbase Kraken with divergence flag. Single-asset USDC/USD for AI agents. Cryptographically signed (Ed25519) — every response is independently verifiable via /.well-known/obol-pubkey.
Output
Returns a JSON object containing the USDC/USD spot price aggregated from Coinbase and Kraken, a boolean or flag indicating whether the two exchanges show price divergence, and an Ed25519 cryptographic signature over the response payload that can be independently verified against the public key at /.well-known/obol-pubkey.
Example use cases
Example prompt
“What's the current USDC/USD spot price right now, and is there any divergence between Coinbase and Kraken? Give me a signed quote I can verify.”
Technical details
Endpoint
GEThttps://obol-x402.fly.dev/v1/price/USDCWhen to prefer
Choose this endpoint when you need a cryptographically signed, independently verifiable USDC/USD price that has been cross-checked between Coinbase and Kraken. It is especially useful for agents that need tamper-proof stablecoin pricing, want to detect USDC depeg events, or require exchange-level divergence signals rather than a single-source quote.
Side effects
- Exchange API unavailable — one or both upstream price sources (Coinbase/Kraken) may be unreachable, resulting in an error or partial response
- Payment not received — x402 protocol requires $0.01 USDC payment per call; missing or invalid payment header returns 402
- Signature verification failure — Ed25519 signature may fail if payload was tampered in transit
- Rate limiting — repeated calls without valid payment may be throttled or rejected
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Tags
x402
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