List unconfirmed transactions in the Bitcoin mempool with pagination. Use this to monitor incoming transactions before they are included in a block.
AI agents call mempool_transactions_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 retrieves and queries unconfirmed Bitcoin transactions from the mempool. It performs no modifications, deletions, execution of code, financial transactions, or irreversible operations. It is purely informational—monitoring mempool state is a standard blockchain read operation with no blast radius if misused by an AI agent, as it cannot alter blockchain state or trigger unwanted actions.
From the tool's definition Tool name 'mempool_transactions_get' and description 'List unconfirmed transactions in the Bitcoin mempool' indicate data retrieval with no side effects. The verb 'List' and 'monitor' confirm read-only querying of blockchain mempool state.
Attacks that exploit this kind of access
List unconfirmed transactions in the Bitcoin mempool with pagination. Use this to monitor incoming transactions before they are included in a block. 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 mempool_transactions_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.
mempool_transactions_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 mempool_transactions_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 mempool_transactions_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.
mempool_transactions_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.
Teams ship this data inside their own products. See what a licence covers →