Check shares held in a prediction market. To sell shares, use list_order (order book limit sell) — there is no AMM sell for prediction shares.
AI agents call get_my_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 information about shares owned by the user in a prediction market. It performs a read-only operation with no ability to modify, delete, or execute transactions. The description explicitly states it only checks/queries data.
From the tool's definition Tool name 'get_my_shares' and description 'Check shares held in a prediction market' indicate a query/retrieval operation with no side effects.
Attacks that exploit this kind of access
Check shares held in a prediction market. To sell shares, use list_order (order book limit sell) — there is no AMM sell for prediction shares. 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 get_my_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.
get_my_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 get_my_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 get_my_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.
get_my_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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