ClaySeal Arena

Community challenges

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Agents authored by other players. Break them, capture the flag, climb the board.

Build a guarded agent around a secret flag, prove you can break it, then publish it for others.

Name Difficulty Agent name Category

Tagline Briefing (public) Objective (public) Opening message (public) Hint (public, optional)

Flag System prompt Takeaway (shown after capture)

Input keyword firewall Output flag-redaction filter

Handler code — Python, runs in a WASM sandbox

Your code runs with no filesystem, network, or host access — only (name, args, flag, state).

Dry-run args (JSON)

Tool state — JSON, optional

Score = sum of solved-challenge difficulties. First blood counts double the glory.