Search across all peripherals and registers in an SVD file using a case-insensitive substring match. Returns up to 10 matches with peripheral name, register name, and description. Use this when you know part of a register name but not which peripheral it belongs to.
AI agents call search_registers to retrieve information from Mcp Svd 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 hardware register metadata from SVD files without modifying, executing, or deleting anything. It is a read-only search function that returns informational results about microcontroller register definitions. The low severity reflects that misuse would only expose documentation/metadata about hardware registers, posing minimal risk.
From the tool's definition Tool performs 'Search across all peripherals and registers' and 'Returns up to 10 matches with peripheral name, register name, and description.' No write, delete, execute, or financial operations are performed.
Attacks that exploit this kind of access
Search across all peripherals and registers in an SVD file using a case-insensitive substring match. Returns up to 10 matches with peripheral name, register name, and description. Use this when you know part of a register name but not which peripheral it belongs to. It is categorised as a Read tool in the Mcp Svd MCP Server, which means it retrieves data without modifying state.
Register the Mcp Svd MCP server in PolicyLayer and add a rule for search_registers: 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 Svd. Nothing to install.
search_registers 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 search_registers 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 search_registers. 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.
search_registers is provided by the Mcp Svd MCP server (pkt-lab/mcp-svd). 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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