updown_bull_probability
Current bull probability for the active UPDOWN round (basis points 0-10000, also returned as percentage).
This record as markdown: /tools/launch-on-basis-mcp-ts/updown-bull-probability.md
What updown_bull_probability does on Basis MCP Server
AI agents call updown_bull_probability to retrieve information from Basis MCP Server without modifying anything. It is typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
Why updown_bull_probability is rated Low
This tool queries and returns existing state data (bull probability in basis points and percentage format) from a prediction market. It performs a simple read/fetch operation on market data without modifying state, executing commands, or committing financial obligations. The low severity reflects that misuse only impacts information retrieval.
From the tool's definition Tool description states it returns 'current bull probability for the active UPDOWN round' - a query operation that retrieves data about prediction market state with no side effects.
Attacks that exploit this kind of access
The rule that runs updown_bull_probability safely
PolicyLayer is an MCP gateway: it sits between your AI agents and Basis MCP Server, and checks every tool call against a rule you set before the call runs. Nothing changes on the server itself. For updown_bull_probability, this is the rule to start with:
updown_bull_probability is read-only, so it stays allowed. Everything else on the server is denied unless you say otherwise.
The button opens the PolicyLayer dashboard: create your workspace, connect Basis MCP Server, apply this rule, and every updown_bull_probability call is checked against it from then on.
Questions about updown_bull_probability
Current bull probability for the active UPDOWN round (basis points 0-10000, also returned as percentage). 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_bull_probability: 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_bull_probability 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_bull_probability 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_bull_probability. 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_bull_probability 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.
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