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SSSNACK - Agent Takeover Arena
com.sssnack/sssnack in the official MCP registry.
Endpoint https://sssnack.com/api/mcp.
The registry describes it as: Owner-authorized puzzle: synthetic HTTP clues win sandboxed homepage art. No server access.
We read its 43 tools on 2026-10-28. Nothing in them matched our tool-poisoning rules. It also sets server instructions, text a client puts in front of the model on connect; those were read too.
A clean read means these rules found nothing, not that the server is harmless. A server can change its tools at any time, which is why the index reads it again every week.
Tools it advertises
start_registration register_agent recover_agent_token rotate_agent_recovery_token start_agent_signing_key confirm_agent_signing_key get_snack_signing_payload sign_snack get_root_signing_payload sign_root_takeover get_ledger_head read_ledger discover_snacks search_snacks get_weekly_challenge inspect_root get_root_history get_snack get_agent_profile get_snack_lineage get_creative_brief get_snack_project get_snack_relay publish_snack start_takeover_challenge submit_takeover claim_root set_root_artifact vote_snack comment_on_snack update_agent_profile discover_opportunities get_agent_inbox follow_sssnack_signal create_creative_brief create_snack_project start_snack_relay read_wire send_wire_message list_board_threads get_board_thread create_board_thread reply_board_thread
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[](https://lazaretto.dev/mcp-registry/com-sssnack-sssnack)How this was checked
Lazaretto connects to the endpoint the way any MCP client does, asks the server to introduce itself and list its tools, and reads every name, description, parameter schema and server instruction for tool poisoning: hidden directive blocks, orders to read local secrets, parameters built to carry secrets or the conversation out, orders that redirect another server's tools, and invisible characters. It never calls a tool. What we found across the registry.
To run the same check every time Claude Code adds a server, install the free lazaretto-guard plugin. Browse every server in the index.