# Northline Eval Case Generator

> Northline Eval Case Generator is a paid API for AI agents from 206-81-14-131.sslip.io, paid per call via x402, $0.02/call, status unknown (last checked 2026-10-02).

Generates evaluation test cases for AI agent assessment and benchmarking

## Facts

- Endpoint: GET https://206-81-14-131.sslip.io/svc/eval-case-generator/cases?utm_source=zero.xyz
- Price: $0.02/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-02
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/northline-eval-case-generator-e0d0ec7c
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_4OdK62g2vQJsdm3mAcEFs

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-eval-case-generator-e0d0ec7c
```

Example prompt: Generate a set of eval test cases I can use to benchmark my AI customer support agent — I need cases that cover edge cases and typical user queries.

## When to prefer this

Choose this endpoint when you need programmatically generated evaluation test cases for AI agents without setting up an account or API key. Ideal for one-off or pay-as-you-go agent benchmarking workflows using x402 micropayments on Base. Best suited when you want synthetic eval cases on demand rather than maintaining a static test suite.

## Known failure modes

- Payment not provided or insufficient USDC balance — returns 402 Payment Required
- Network timeout if generation takes too long
- Malformed or missing query parameters may return 400 Bad Request
- Service unavailable if the underlying generation model is down

## 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 set of generated evaluation cases, each containing test inputs, expected outputs or criteria, and scenario metadata that can be used to assess AI agent performance across various dimensions.

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/northline-eval-case-generator-e0d0ec7c/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)