Get the hash of the latest block in the Bitcoin blockchain. Use this to retrieve the most recent block hash.
AI agents call latest_blockhash_get to retrieve information from Satstream MCP Server without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool queries public Bitcoin blockchain data (latest block hash) with no side effects, reversible modifications, code execution, financial transactions, or destructive actions. It is a straightforward read operation on immutable blockchain state, presenting minimal security risk even if misused by an AI agent.
From the tool's definition Tool retrieves 'the hash of the latest block' with no modification capability. The verb 'Get' and the read-only nature of fetching blockchain data confirm this is a query operation.
Attacks that exploit this kind of access
Get the hash of the latest block in the Bitcoin blockchain. Use this to retrieve the most recent block hash. It is categorised as a Read tool in the Satstream MCP Server MCP Server, which means it retrieves data without modifying state.
Register the Satstream MCP Server MCP server in PolicyLayer and add a rule for latest_blockhash_get: 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 Satstream MCP Server. Nothing to install.
latest_blockhash_get 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 latest_blockhash_get 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 latest_blockhash_get. 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.
latest_blockhash_get is provided by the Satstream MCP Server MCP server (satstream/ss-mcp). 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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