Returns the block height of the next difficulty retarget
AI agents call get_next_retarget 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.
The tool performs a simple read operation that queries and returns blockchain state information (next retarget block height). It does not create, modify, delete, or execute any operations. It has no ability to alter blockchain state or trigger external actions. The blast radius of misuse is minimal—an AI agent cannot cause harm by querying this public blockchain metadata.
From the tool's definition Tool name and description indicate a query operation: 'Returns the block height of the next difficulty retarget'. This is a retrieval of blockchain metadata with no side effects.
Attacks that exploit this kind of access
Returns the block height of the next difficulty retarget. 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_next_retarget: 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_next_retarget 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_next_retarget 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_next_retarget. 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_next_retarget 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.
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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