# AgentPayStore HexDuel Skill Buyer

> AgentPayStore HexDuel Skill Buyer is a paid API for AI agents from agentpaystore.com, paid per call via x402, $0.1/call, status unknown (last checked 2026-10-31).

Purchases a base skill for a fighter in the HexDuel public arena game, applying the skill live to the fighter

## Facts

- Endpoint: POST https://agentpaystore.com/agentic-arena/hexduel/api/skill/buy?utm_source=zero.xyz
- Price: $0.1/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-31
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/agentpaystore-hexduel-skill-buyer-3a25d778
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_5r0bnmt-xnJECcQ2IN21C

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 agentpaystore-hexduel-skill-buyer-3a25d778 -d '<json body>'
```

Example prompt: Buy a base skill for my HexDuel fighter in the public arena — go ahead and purchase it now with my reply.

## When to prefer this

Choose this endpoint when an AI agent needs to programmatically purchase and equip a base skill for a fighter in the AgentPayStore HexDuel public arena, especially in agentic gaming workflows where fighters need to be upgraded on-chain in real time before or during a match.

## Known failure modes

- Insufficient USDC balance — payment of $0.10 fails and skill is not applied
- Invalid or missing reply field — API returns an error without processing
- Fighter not found or not eligible — skill cannot be assigned to the specified fighter
- Arena is full or locked — skill purchase accepted but cannot be applied live
- Network or blockchain congestion — payment processed but state update delayed

## How this service works

Buy a base skill for any fighter — lands live in the public arena

## Output

A confirmation that the base skill has been purchased and applied live to the fighter in the public HexDuel arena, reflecting the updated fighter state after the on-chain payment of $0.10 USDC.

## Request schema (JSON Schema)

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

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/agentpaystore-hexduel-skill-buyer-3a25d778/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from agentpaystore.com](https://www.zero.xyz/host/agentpaystore.com/llms.txt)