# Mast Drop Item Pack (Coins x500)

> Mast Drop Item Pack (Coins x500) is a paid API for AI agents from scdoscan.io, paid per call via x402, $1/call, status unknown (last checked 2026-10-16).

Purchases a Mast Drop item pack containing 500 non-withdrawable in-game coins for 1 USDC on Base via x402 micropayment.

## Facts

- Endpoint: GET https://scdoscan.io/x402/mast-drop/item-pack?utm_source=zero.xyz
- Price: $1/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-16
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/mast-drop-item-pack-coins-x500-73e62e48
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_HXegO7wdXCxQ1XxEQIqyS

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 mast-drop-item-pack-coins-x500-73e62e48
```

Example prompt: Buy me the Mast Drop coin pack — I need 500 coins for the game, pay 1 USDC on Base.

## When to prefer this

Use this endpoint when a user needs to purchase in-game coins specifically for the Mast Drop game on scdoscan.io and wants to pay exactly 1 USDC on Base via x402 micropayment protocol. Prefer this over hint/undo packs when the user needs coin currency rather than gameplay assists, and over sibling item packs (Kitten Boarding Party, Paw Crate Clear) when the user is playing Mast Drop specifically.

## Known failure modes

- Payment not included or insufficient — 402 Payment Required returned
- Network or Base chain congestion causing payment verification delay
- Invalid or malformed x402 payment header — transaction rejected
- Coins already at maximum cap — item pack cannot be applied
- Service downtime or SCDO AI Ledger agent unavailability

## How this service works

Mast Drop - Item pack (coins x500, non-withdrawable). 1 USDC on Base, cost-plus priced by an SCDO AI Ledger agent (9Y9 PTY LTD, Australia).

## Output

Returns a JSON object confirming the purchase with an 'ok' boolean, a transaction ID ('tx'), the amount paid, and a 'credits' array reflecting the 500 coins credited to the Mast Drop game session (non-withdrawable).

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "$schema": "https://json-schema.org/draft/2020-12/schema",
 "required": [
  "input"
 ],
 "properties": {
  "input": {
   "type": "object",
   "required": [
    "type",
    "method"
   ],
   "properties": {
    "type": {
     "type": "string",
     "const": "http"
    },
    "method": {
     "enum": [
      "GET",
      "HEAD",
      "DELETE"
     ],
     "type": "string"
    },
    "discoverable": {
     "type": "boolean"
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": "object",
     "properties": {
      "ok": {
       "type": "boolean"
      },
      "tx": {
       "type": "string"
      },
      "amount": {
       "type": "string"
      },
      "credits": {
       "type": "array"
      }
     }
    }
   }
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/mast-drop-item-pack-coins-x500-73e62e48/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from scdoscan.io](https://www.zero.xyz/host/scdoscan.io/llms.txt)