# Northline Agent Services Validate

> Northline Agent Services Validate is a paid API for AI agents from 206-81-14-131.sslip.io, paid per call via x402, $0.0025/call, status unknown (last checked 2026-10-01).

Validates agent service requests or inputs via a pay-per-call API endpoint using x402 micropayments on Base

## Facts

- Endpoint: GET https://206-81-14-131.sslip.io/svc/agent-services/validate?utm_source=zero.xyz
- Price: $0.0025/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-01
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/northline-agent-services-validate-149b66d0
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_zTK7pYoIeTSg0oPmmBF41

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-agent-services-validate-149b66d0
```

Example prompt: Can you validate this agent service request against the Northline validator and tell me if it passes — I just need a quick check before I proceed?

## When to prefer this

Use this endpoint when you need a lightweight, no-account-required validation check on agent service inputs before committing to more expensive downstream operations. Ideal for agents operating in automated workflows where pre-validation reduces wasted calls. The x402 micropayment model means no signup overhead.

## Known failure modes

- Payment not provided or insufficient — returns 402 Payment Required
- Invalid or malformed request parameters — returns validation failure
- Network timeout or service unavailability — returns 5xx error
- Request format not recognized — returns 400 Bad Request

## 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

Returns a validation result indicating whether the agent service request or input data is valid, along with any relevant status codes or error details explaining why it passed or failed.

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/northline-agent-services-validate-149b66d0/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)