# Northline Crypto Prices Sample

> Northline Crypto Prices Sample is a paid API for AI agents from 206-81-14-131.sslip.io, paid per call via x402, $0.003/call, status unknown (last checked 2026-10-01).

Returns a sample of current cryptocurrency price data via a pay-per-call API using x402 micropayments

## Facts

- Endpoint: POST https://206-81-14-131.sslip.io/svc/crypto-prices/sample?utm_source=zero.xyz
- Price: $0.003/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-01
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/northline-crypto-prices-sample-902ac6b6
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_oN27TTKvSHWZPdnE2TICQ

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 northline-crypto-prices-sample-902ac6b6 -d '<json body>'
```

Example prompt: Can you grab me a sample of current crypto prices — things like BTC, ETH, and maybe a few altcoins — using the Northline pay-per-call service?

## When to prefer this

Choose this endpoint when you need cryptocurrency price data without setting up accounts or API keys, and can pay small per-call fees in USDC on the Base blockchain. Ideal for agents that need occasional price lookups rather than high-frequency streaming data, or when operating in a trustless, permissionless environment.

## Known failure modes

- Payment not received or insufficient USDC balance — returns 402 Payment Required
- Invalid or malformed request body — returns 400 Bad Request
- Service temporarily unavailable — returns 503
- Requested asset symbols not found in the sample dataset — returns empty or partial results

## How this service works

Pay-per-call APIs, paid downloads and work-on-request for agents. Payment: x402 (USDC on Base, eip155:8453), no accounts or API keys. Catalog: https://206-81-14-131.sslip.io/?format=json. Agent guide: https://206-81-14-131.sslip.io/llms.txt

## Output

A sample dataset of current cryptocurrency prices for multiple assets, returned as structured data including asset symbols and their current market prices, payable via USDC micropayment on Base network.

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/northline-crypto-prices-sample-902ac6b6/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from 206-81-14-131.sslip.io](https://www.zero.xyz/host/206-81-14-131.sslip.io/llms.txt)