# Obol Multi-Asset Crypto Spot Prices

> Obol Multi-Asset Crypto Spot Prices 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 real-time USD spot prices for BTC, ETH, SOL, USDC, and USDT in a single call, with cross-exchange (Coinbase + Kraken) quotes, stale-price flags, and price-divergence indicators, all cryptographically signed with Ed25519.

## Facts

- Endpoint: GET https://obol-x402.fly.dev/prices
- Price: $0.01/call
- Payment: x402
- Status: down
- Last checked: 2026-09-15
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/obol-multi-asset-crypto-spot-prices-9baa26f6
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_Mg63jmEBwSgoB27jappTq

Status and success rate cover calls made through Zero and Zero's own probes. Third-party monitors may report differently.

## How to call it through Zero

Zero handles the 402 payment challenge and records the run. With the Zero CLI installed (`npm i -g @zeroxyz/cli`):

```sh
zero fetch --capability obol-multi-asset-crypto-spot-prices-9baa26f6
```

Example prompt: What are the current USD spot prices for BTC, ETH, SOL, USDC, and USDT right now — and are there any price divergences between Coinbase and Kraken I should know about before sizing my trade?

## When to prefer this

Choose this endpoint when you need real-time USD prices for multiple major crypto assets (BTC, ETH, SOL, USDC, USDT) in a single low-latency call with built-in data integrity signals (staleness and divergence flags) and cryptographic proof of authenticity. Prefer it over single-asset endpoints when you need portfolio-level ticks or multi-asset trade sizing. Prefer it over unverified price feeds when auditability and tamper-evidence matter.

## Known failure modes

- Upstream exchange API unavailable — stale-price flag set to true in response
- Price divergence detected — divergence flag set true, agent should treat prices with caution
- Payment not received or insufficient — 402 Payment Required response before data is returned
- Network timeout on fly.dev infrastructure — HTTP 5xx with no price data
- Signature verification failure on consumer side if public key rotated — check /.well-known/obol-pubkey

## How this service works

Pre-trade safety for AI agents on Base, Ethereum, Arbitrum, Optimism, Polygon, BNB and Robinhood Chain. Is this token a rug — and can I sell it again? Signed verdicts before you buy, approve, send or sign: token rug/honeypot check with buy-sell tax, honeypot sell-simulation, pre-sign calldata guard (unlimited-approve / setApprovalForAll / drain-in-multicall), wallet risk with sanctions screening, tx preflight, and a launch feed with safety overlays. Plus unique Bitcoin forensics no RPC gives you: money-graph role, whale and exchange fingerprinting, Satoshi-era provenance, validation-gated block anomalies, and broadcast-fee timing. Every response Ed25519-signed and independently verifiable. Pay-per-call USDC on Base — no keys, no accounts, no signup. Free: /catalog, /llms.txt, and a preview for every paid SKU.

## Output

A single JSON response containing real-time USD spot prices for BTC, ETH, SOL, USDC, and USDT sourced from both Coinbase and Kraken, with per-asset stale-price boolean flags, price-divergence boolean flags (indicating meaningful spread between exchanges), and an Ed25519 cryptographic signature over the response payload that can be independently verified via the provider's public key endpoint.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "properties": {
   "type": "string"
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "as_of": 0,
  "price": {
   "usd": 64000
  },
  "symbol": "BTC"
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/obol-multi-asset-crypto-spot-prices-9baa26f6/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from obol-x402.fly.dev](https://www.zero.xyz/host/obol-x402.fly.dev/llms.txt)