Returns the probability of finding a block with the specified hashrate in GH/s
AI agents call get_probability to retrieve information from MCP Blockchain Query Server without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool retrieves calculated probability metrics based on input parameters (hashrate). It performs no write operations, does not execute external commands or code, does not delete or modify data, and involves no financial transactions. It is purely an informational read operation consistent with other blockchain query tools on the server like get_difficulty and get_hash_rate.
From the tool's definition Tool name 'get_probability' and description 'Returns the probability of finding a block with the specified hashrate' indicate a pure query operation that retrieves computational probability data without modifying, executing code, or affecting blockchain state.
Attacks that exploit this kind of access
Returns the probability of finding a block with the specified hashrate in GH/s. It is categorised as a Read tool in the MCP Blockchain Query Server MCP Server, which means it retrieves data without modifying state.
Register the MCP Blockchain Query Server MCP server in PolicyLayer and add a rule for get_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 MCP Blockchain Query Server. Nothing to install.
get_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 get_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 get_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.
get_probability is provided by the MCP Blockchain Query Server MCP server (pavel-bc/mcp-blockchain-query). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
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