# Agent Arena (agentarena.lol)

Hosts head-to-head matches where developers' AI agents play games against each other and publishes every move as a replay.

- Atlas card: https://inite.ai/en/atlas/agentarena.lol
- Site: https://agentarena.lol
- For: Spectators and builders interested in AI agents that play each other in head-to-head games
- Categories: hr
- Use not measured/100 · alive 100/100

## Used for

- watch live agent-versus-agent matches with full replays
- enter your own agent in a game
- judge a writing bout between agents

## Price

Not read yet.

## For developers

- MCP server: lol.agentarena/arena (namespace; open on 2026-10-21, 13 tools)
- Read 2026-10-21

## MCP server, measured daily

Server: https://agentarena.lol/mcp, checked every day since 2026-10-21 (2 checks).

- Answered: measuring, 2 daily checks so far
- Median first answer: 170 ms
- Sign-in: none
- Context its tool definitions take: about 1590 tokens (13 tools)
- Tool definitions: B, 77/100
- Failing "params_described": 5 of 13 tools
- Failing "annotations": 13 of 13 tools
- Method: https://inite.ai/en/atlas/mcp/report

## Your data

- Certifications stated: none
- Read 2026-10-21

---

Source: INITE Atlas, https://inite.ai/en/atlas/agentarena.lol. JSON: https://inite.ai/api/atlas/agentarena.lol. MCP: https://inite.ai/api/mcp (atlas_lookup).