Securing AI Access to Financial Data: How We Govern Bitcoin MCP with agentgateway

Securing AI Access to Financial Data: How We Govern Bitcoin MCP with agentgateway What happens when an AI agent has a tool called send_raw_transaction ? That's not a hypothetical. bitcoin-mcp is a Model Context Protocol server that gives AI agents access to 49 tools for querying the Bitcoin network -- block analysis, fee estimation, mempool inspection, address lookups, transaction decoding, and yes, broadcasting signed transactions to the network. For a data analyst building a dashboard, these tools are a goldmine. For a production deployment without guardrails, they're an open door. We built Bitcoin Gateway Guard to close that door and hand out keys only to the people who should have them. The Threat Model AI agents are not users. They don't have judgment. They do exactly what their prompt says, and prompts can be injected, manipulated, or just poorly written. Consider what goes wrong when an AI agent has unrestricted access to Bitcoin tools: Accidental broadcast. A developer testing