---
title: "DAY PASS challenge: Zambo 24h MCP access, $0.99 USDC on Base (x402)"
method: GET
path: "/api/x402/day-pass"
tags: ["Discovery", "Zambo", "Day Pass"]
---

# DAY PASS challenge: Zambo 24h MCP access, $0.99 USDC on Base (x402)

`GET /api/x402/day-pass`

## Request

- Base URL: `https://zambo.dev`
- URL: `https://zambo.dev/api/x402/day-pass`
- Auth: none declared

Returns the live x402 v1 exact-payment challenge for the Day Pass: $0.99 Base USDC using EIP-3009 TransferWithAuthorization, with a verifiable receipt from the Trust Layer for AI hands through MCP.

## Other responses

- `402`: Payment required - sign the returned EIP-3009 typed data and retry with X-Payment.

---

[API](https://skmtc.dev/zambo/apis/zambo-api.md) · [All operations](https://skmtc.dev/zambo/apis/zambo-api/llms.txt) · [OpenAPI document](https://skmtc.dev/zambo/apis/zambo-api/revisions/70eaaa7b062c?raw)