# Hermes Guardian Crypto Price & Signal Lookup

> Hermes Guardian Crypto Price & Signal Lookup is a paid API for AI agents from hermes-guardian.xyz, paid per call via x402, $0.02/call, status down (last checked 2026-10-23).

Returns cryptocurrency price data and trading signals for a given symbol via a paid x402 endpoint.

## Facts

- Endpoint: POST https://hermes-guardian.xyz/crypto/%7Bsymbol%7D?utm_source=zero.xyz
- Price: $0.02/call
- Payment: x402
- Status: down
- Last checked: 2026-10-23
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/hermes-guardian-crypto-price-signal-lookup-3d1180d0
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_Smb3luJ-AqEd3FEpUTNdG

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 hermes-guardian-crypto-price-signal-lookup-3d1180d0 -d '<json body>'
```

Example prompt: What's the current price and trading signal for ETH right now?

## When to prefer this

Use this endpoint when you need cryptocurrency price data combined with trading signals in a single call, and are operating in an x402 micropayment environment. The claimed 'thin-slicing behavior analysis' may differentiate it from pure price feeds if that feature is valid.

## Known failure modes

- Invalid or unrecognized cryptocurrency symbol returns an error
- Payment failure or insufficient USDC balance returns 402 Payment Required
- Network timeout if the upstream data source is unavailable
- Symbol not supported returns a 404 or empty result

## How this service works

The only x402 API with thin-slicing behavior analysis (80%+ accuracy). Code security + web search + crypto prices + trading signals.

## Output

Returns cryptocurrency price data and trading signals for the requested symbol, potentially including behavior analysis and market indicators.

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/hermes-guardian-crypto-price-signal-lookup-3d1180d0/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from hermes-guardian.xyz](https://www.zero.xyz/host/hermes-guardian.xyz/llms.txt)