# Tic-Tac-Toe Game via everygoodwork.io

> Tic-Tac-Toe Game via everygoodwork.io is a paid API for AI agents from tic-tac-toe.everygoodwork.io, paid per call via x402, $0.01/call, status unknown (last checked 2026-09-15).

Plays a move or manages a game of tic-tac-toe, returning the game state after each play.

## Facts

- Endpoint: POST https://tic-tac-toe.everygoodwork.io/-/pay/play
- Price: $0.01/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-15
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/tic-tac-toe-game-via-everygoodwork-io-573e0e4e
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_YawI8L5EgyzLh-mJ56o2I

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 tic-tac-toe-game-via-everygoodwork-io-573e0e4e -d '<json body>'
```

Example prompt: Play a move in tic-tac-toe — I want to place my X in the center square on an otherwise empty board.

## When to prefer this

Choose this endpoint when you want to play or simulate tic-tac-toe programmatically via a paid micro-API, especially in agentic workflows where an AI needs to make or evaluate game moves. It is the right choice when building games, demos, or interactive agent experiences that require turn-based tic-tac-toe logic as a service.

## Known failure modes

- Invalid move position (square already occupied or out of bounds) — likely returns an error or rejection message
- Malformed request body missing required fields — returns a 400 or schema validation error
- Payment failure for x402 protocol — returns a 402 Payment Required response
- Ambiguous or missing board state — server may reject or misinterpret the game context

## How this service works

a play of tic-tac-toe — You can play it for the time you paid for. You don't own it — the creator still does.

## Output

Returns the updated tic-tac-toe board state after the submitted move, including whether the game is ongoing, who won, or if the game ended in a draw.

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/tic-tac-toe-game-via-everygoodwork-io-573e0e4e/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from tic-tac-toe.everygoodwork.io](https://www.zero.xyz/host/tic-tac-toe.everygoodwork.io/llms.txt)