# Northline Agent Input Safety Checklist

> Northline Agent Input Safety Checklist is a paid API for AI agents from 206-81-14-131.sslip.io, paid per call via x402, $0.25/call, status unknown (last checked 2026-10-01).

Downloads a Markdown-formatted safety checklist for validating and sanitizing agent inputs before processing

## Facts

- Endpoint: GET https://206-81-14-131.sslip.io/svc/agent-input-safety-checklist/dl/agent-input-safety-checklist.md?utm_source=zero.xyz
- Price: $0.25/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-input-safety-checklist-46a66950
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_IA1DvILqge7ML5nKJMQjs

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-input-safety-checklist-46a66950
```

Example prompt: Can you grab the agent input safety checklist so I can review what inputs I need to validate and sanitize before my agent processes any user requests?

## When to prefer this

Choose this endpoint when you need a ready-made, authoritative reference document for agent input safety that can be consumed directly by an AI agent or developer without building your own checklist from scratch. Ideal for bootstrapping security reviews, onboarding, or runtime safety checks in agent pipelines where prompt injection and malicious input handling are concerns.

## Known failure modes

- Payment not received or insufficient USDC balance — 402 Payment Required returned
- Network or server unavailability at the raw IP host — connection timeout or 503
- File temporarily unavailable — 404 Not Found

## 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 Markdown-formatted document containing a structured checklist of safety practices and validation rules for agent inputs, covering topics such as input sanitization, prompt injection prevention, and safe handling of user-provided data.

## Response schema (JSON Schema)

```json
{
 "type": "file",
 "format": "text/markdown; charset=utf-8"
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/northline-agent-input-safety-checklist-46a66950/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)