Preview shares minted by a hypothetical bet on the current round. Includes slippage. Returns 0 if no active round.
AI agents call updown_quote_shares 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 displays predictive information (share amount, slippage details) about a potential transaction without actually executing it. It is a read-only query operation that has no side effects on blockchain state, user funds, or any data structures. The fact that it processes hypothetical scenarios and returns 0 in certain conditions confirms it is purely informational.
From the tool's definition Tool name and description indicate it 'previews' or queries information about hypothetical minted shares without executing any bet or transaction. The description explicitly states it returns a preview/quote with no indication of state changes or side effects.
Attacks that exploit this kind of access
Preview shares minted by a hypothetical bet on the current round. Includes slippage. Returns 0 if no active round. 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_quote_shares: 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_quote_shares 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_quote_shares 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_quote_shares. 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_quote_shares 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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