Delete specific relations between entities.
AI agents call delete_relations to permanently remove resources in Codebase Knowledge Graph MCP Server — typically in cleanup and lifecycle workflows. It does its job in a single call, and there is no undo.
This tool destructively removes relations that connect code entities. While not as catastrophic as deleting entire entities, relation deletions are irreversible and degrade the integrity of the knowledge graph. The blast radius is medium because the impact is scoped to relation metadata rather than source code or critical system data, but recovery requires rebuilding the graph.
From the tool's definition delete_relations deletes specific relations between entities in a stored knowledge graph. The operation is irreversible and permanently removes data (relation records).
Attacks that exploit this kind of access
Delete specific relations between entities. It is categorised as a Destructive tool in the Codebase Knowledge Graph MCP Server MCP Server, which means it can permanently delete or destroy data. Block by default and require explicit approval.
Register the Codebase Knowledge Graph MCP Server MCP server in PolicyLayer and add a rule for delete_relations: 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 Codebase Knowledge Graph MCP Server. Nothing to install.
delete_relations is a Destructive tool with critical risk. Critical-risk tools should be blocked by default and only enabled with explicit human approval.
Yes. Add a rate_limit block to the delete_relations 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 delete_relations. 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.
delete_relations is provided by the Codebase Knowledge Graph MCP Server MCP server (jigneshsuvariya/codenexus-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.
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