AI agents call gsd_map_codebase to retrieve information from Gsd without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
The tool reads and analyzes the codebase using exploration agents. 'Analyze' and 'explore' indicate read-only operations with no side effects. Severity is medium because codebase analysis could expose sensitive code, secrets, or architecture details if misused, and 'parallel agents' implies broad access scope.
From the tool's definition Analyze existing codebase with parallel explore agents
Attacks that exploit this kind of access
Analyze existing codebase with parallel explore agents. It is categorised as a Read tool in the Gsd MCP Server, which means it retrieves data without modifying state.
Register the Gsd MCP server in PolicyLayer and add a rule for gsd_map_codebase: 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 Gsd. Nothing to install.
gsd_map_codebase 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 gsd_map_codebase 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 gsd_map_codebase. 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.
gsd_map_codebase is provided by the Gsd MCP server (m0-ar/gsd-mcp-server). 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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