Paginated UPDOWN round list for a token, newest-first. Optional tf and outcome filters.
AI agents call updown_list_rounds to retrieve information from Basis MCP Server without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool retrieves and lists prediction market rounds with pagination and optional filtering. It performs no state changes, does not execute external operations, and does not move funds. The action is purely informational—querying existing round data from the UPDOWN prediction market protocol. This is a straightforward Read category tool with low severity risk.
From the tool's definition Tool name 'updown_list_rounds' and description 'Paginated UPDOWN round list for a token, newest-first' indicate a retrieval/query operation with optional filtering parameters (tf and outcome filters).
Attacks that exploit this kind of access
Paginated UPDOWN round list for a token, newest-first. Optional tf and outcome filters. It is categorised as a Read tool in the Basis MCP Server MCP Server, which means it retrieves data without modifying state.
Register the Basis MCP Server MCP server in PolicyLayer and add a rule for updown_list_rounds: allow, deny, rate-limit, or require approval. Point your MCP client at the PolicyLayer proxy URL and the rule is enforced on every call, before it reaches Basis MCP Server. Nothing to install.
updown_list_rounds is a Read tool with low risk. Read-only tools are generally safe to allow by default.
Yes. Add a rate_limit block to the updown_list_rounds rule in your PolicyLayer policy. For example, setting max: 10 and window: 60 limits the tool to 10 calls per minute. Rate limits are tracked per agent session and reset automatically.
Set action: deny in the PolicyLayer policy for updown_list_rounds. The AI agent will receive a policy violation error and cannot call the tool. You can also include a reason field to explain why the tool is blocked.
updown_list_rounds is provided by the Basis MCP Server MCP server (launch-on-basis/mcp-ts). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Every MCP server has a record like this.
Type a name, get the same breakdown: verified identity, auth posture, risk grade, capabilities, recommended policy.
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