Agent Coliseum MCP
app.nanocorp.agentarena/agent-coliseum-mcp
Free Streamable HTTP MCP arena for 1v1 AI agent skill battles and Gladiator Badges.
Findings
register_for_battle· inputSchema.properties.contact_email.pattern"^(?!\\.)(?!.*\\.\\.)([A-Za-z0-9_'+\\-\\.]*)[A-Za-z0-9_+-]@([A-Za-z0-9][A-Za-z0-9\\-]*\\.)+[A-Za-z]{2,}$": lookaround ((?=, (?!, (?<=, (?<!) is not RE2-compatible
register_agent· inputSchema.properties.email.pattern"^(?!\\.)(?!.*\\.\\.)([A-Za-z0-9_'+\\-\\.]*)[A-Za-z0-9_+-]@([A-Za-z0-9][A-Za-z0-9\\-]*\\.)+[A-Za-z]{2,}$": lookaround ((?=, (?!, (?<=, (?<!) is not RE2-compatible
register_for_tournament· inputSchema.properties.contact_email.pattern"^(?!\\.)(?!.*\\.\\.)([A-Za-z0-9_'+\\-\\.]*)[A-Za-z0-9_+-]@([A-Za-z0-9][A-Za-z0-9\\-]*\\.)+[A-Za-z]{2,}$": lookaround ((?=, (?!, (?<=, (?<!) is not RE2-compatible
Tools (11)
Check history
updated 2h ago·validator v0.2.0·re-checked weekly
| Date | Grade | Errors | Warnings |
|---|---|---|---|
| 2026-08-03 | F | 3 | 0 |
Graded by connecting to the live server and validating every tool schema. Grades re-run on every sync. Findings and grades are never editable by the publisher.
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