# PromptVault Checkout — USDC on Base

> PromptVault Checkout — USDC on Base is a paid API for AI agents from promptvault-x402.onrender.com, paid per call via x402, $0.01/call, status unknown (last checked 2026-10-17).

Delivers a downloadable ZIP of PromptVault v1 system prompts and agent workflows after payment via x402 (USDC on Base)

## Facts

- Endpoint: GET https://promptvault-x402.onrender.com/poolscan?utm_source=zero.xyz
- Price: $0.01/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-17
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/promptvault-checkout-usdc-on-base-6e7d7872
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_yfpGWhf6RvNsW84troei_

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 promptvault-checkout-usdc-on-base-6e7d7872
```

Example prompt: Can you purchase the PromptVault v1 system prompts and agent workflows pack for me? It costs 3 USDC on Base — go ahead and pay and download the ZIP.

## When to prefer this

Choose this endpoint when you specifically need the PromptVault v1 curated collection of system prompts and agent workflows as a downloadable bundle, and you are set up to pay via USDC on the Base network using the x402 payment protocol. It is ideal for agents or developers bootstrapping AI workflows quickly with pre-built, tested prompts rather than writing from scratch.

## Known failure modes

- Payment not authorized or insufficient USDC balance — 402 Payment Required
- Network or blockchain confirmation delay causing timeout
- Invalid or missing payment header — 400 Bad Request
- Render.com hosting downtime — 503 Service Unavailable
- Corrupted or incomplete ZIP delivery

## How this service works

Prompt + agent workflow pack sold via x402 (USDC on Base)

## Output

A JSON response containing the filename ('promptvault-v1.zip'), content type ('application/zip'), and a description confirming the ZIP of PromptVault v1 system prompts and agent workflows has been delivered following successful 3 USDC Base payment.

## Request schema (JSON Schema)

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

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "filename": "promptvault-v1.zip",
  "contentType": "application/zip",
  "description": "ZIP of PromptVault v1 system prompts and agent workflows after 3 USDC Base payment"
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/promptvault-checkout-usdc-on-base-6e7d7872/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from promptvault-x402.onrender.com](https://www.zero.xyz/host/promptvault-x402.onrender.com/llms.txt)