Buy shares in a prediction market outcome. UNCAPPED payouts — winners split entire losing pool + general pot, NOT $1/share. Before betting: 1) get_my_shares for existing position 2) estimate_shares_out for new shares 3) get_potential_payout(TOTAL shares = existing + new, usdb=bet_amount) → payout...
AI agents use bet to commit financial operations through Basis MCP Server — usually the final step of a payment, billing, or trading workflow. A call moves real money.
This tool places a financial bet in a prediction market, committing real funds (USDB tokens) to purchase outcome shares with monetary payouts. It directly moves money and creates financial obligations/exposure, qualifying as Financial. The uncapped payout structure and potential for total loss of invested capital make the severity critical.
From the tool's definition Buy shares in a prediction market outcome. UNCAPPED payouts — winners split entire losing pool + general pot. Profit = payout_if_win - total_invested.
Risk signalsBulk/mass operation — affects multiple targets
Attacks that exploit this kind of access
Buy shares in a prediction market outcome. UNCAPPED payouts — winners split entire losing pool + general pot, NOT $1/share. Before betting: 1) get_my_shares for existing position 2) estimate_shares_out for new shares 3) get_potential_payout(TOTAL shares = existing + new, usdb=bet_amount) → payout_if_win is your TOTAL payout. Profit = payout_if_win - total_invested. It is categorised as a Financial tool in the Basis MCP Server MCP Server, which means it involves financial transactions. Block by default and require explicit approval.
Register the Basis MCP Server MCP server in PolicyLayer and add a rule for bet: 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.
bet is a Financial tool with critical risk. Critical-risk tools should be blocked by default and only enabled with explicit human approval.
Yes. Add a rate_limit block to the bet 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 bet. 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.
bet 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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