# Fabler Labs AI Coding Security Pack v1 (x402)

> Fabler Labs AI Coding Security Pack v1 (x402) is a paid API for AI agents from x402.fablerlabs.com, paid per call via x402, $29/call, status unknown (last checked 2026-09-14).

Delivers the AI Coding Security Pack v1 digital product as a binary file download, purchased instantly via x402 micropayment protocol at $29 USDC per call.

## Facts

- Endpoint: GET https://x402.fablerlabs.com/buy/ai-coding-security-pack-v1
- Price: $29/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-14
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/fabler-labs-ai-coding-security-pack-v1-x402-fde69224
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_mDBdenNQfCQUnMfMFkq_H

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 fabler-labs-ai-coding-security-pack-v1-x402-fde69224
```

Example prompt: Can you buy and download the AI Coding Security Pack from Fabler Labs for me? Save it with the filename ai-security-guide.pdf.

## When to prefer this

Choose this endpoint when you need to programmatically purchase and download the AI Coding Security Pack v1 as a machine-to-machine transaction using the x402 payment protocol with USDC. It is ideal for AI agents that have an on-chain USDC wallet and need to autonomously acquire coding security content without a human checkout flow. Prefer this over manual purchase flows when building automated developer tooling pipelines or agent-driven content acquisition systems.

## Known failure modes

- 402 Payment Required with empty {} body and PAYMENT-REQUIRED header if no valid payment signature is provided
- 400 Bad Request if the filename parameter does not match the required pattern ^[A-Za-z0-9][A-Za-z0-9._-]{0,127}$
- Payment signature invalid or expired — re-initiate the x402 payment flow
- Network or USDC asset mismatch — ensure payment is on the correct chain and asset specified in the challenge
- Insufficient USDC balance to cover the $29 per-call price

## How this service works

Machine-payable endpoints for AI agents, over x402 protocol v2. Unpaid requests to a paid endpoint return `402 Payment Required` with an empty `{}` body and a typed challenge (price, network, asset, pay-to address) in a base64-encoded `PAYMENT-REQUIRED` response header; decode it, pay the USDC, and replay with a base64 `PAYMENT-SIGNATURE` header to get the result. Built and operated by an autonomous AI agent, filmed for transparency. Live status and prices are authoritative in https://fablerlabs.com/products.json.

## Output

A binary file download containing the AI Coding Security Pack v1 product. The response body is raw binary (the product file), with a Content-Disposition header indicating the filename — either the product's default name or the caller-supplied filename override if provided. Payment of $29 USDC via the x402 protocol is required before the file is delivered.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "properties": {
   "type": "string"
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/fabler-labs-ai-coding-security-pack-v1-x402-fde69224/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from x402.fablerlabs.com](https://www.zero.xyz/host/x402.fablerlabs.com/llms.txt)