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Obol BTC/USD Spot Price Feed (Signed)
x402
Obol BTC/USD Spot Price Feed (Signed) 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 Bitcoin spot price in USD, cryptographically signed with Ed25519 for independent verification.
Price / call$0.01
Success—
StatusDown
How this service works
Bitcoin BTC USD spot price only — single-asset price for trading agents. Cryptographically signed (Ed25519) — every response is independently verifiable via /.well-known/obol-pubkey.
Output
Returns the current BTC/USD spot price as a single numeric value, accompanied by an Ed25519 cryptographic signature and metadata (timestamp, source exchange). The signature can be independently verified against the public key published at /.well-known/obol-pubkey.
Example use cases
Example prompt
“What's Bitcoin's current USD spot price? I need a cryptographically signed quote I can independently verify.”
Technical details
Endpoint
GEThttps://obol-x402.fly.dev/v1/btc/spotWhen to prefer
Choose this endpoint when your agent needs a single, real-time BTC/USD spot price that is cryptographically signed and independently verifiable — ideal for trading bots, audit trails, or any workflow requiring tamper-proof price attestation. Prefer the Trader Bundle sibling endpoint if you also need ETH or mempool data in the same call.
Side effects
- Payment not included or insufficient USDC — returns HTTP 402 requiring x402 payment
- Upstream exchange data unavailable — may return a stale or error response
- Signature verification fails if public key endpoint is unreachable
- Network timeout on fly.dev infrastructure — retry recommended
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Tags
x402
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