Read the entire current knowledge graph.
AI agents call read_graph to retrieve information from Codebase Knowledge Graph MCP Server without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool only queries and retrieves existing structured data about code entities and their relationships. It has no side effects, does not modify or delete data, and does not execute any operations. It falls squarely into the Read category with low severity since the blast radius of misuse is limited to information disclosure of what is already stored in the knowledge graph.
From the tool's definition Tool name 'read_graph' explicitly indicates reading operation. Description states it retrieves 'the entire current knowledge graph' with no mention of modification, deletion, or execution of operations. This is a pure data retrieval operation.
Risk signalsBulk/mass operation — affects multiple targets
Attacks that exploit this kind of access
Read the entire current knowledge graph. It is categorised as a Read tool in the Codebase Knowledge Graph MCP Server MCP Server, which means it retrieves data without modifying state.
Register the Codebase Knowledge Graph MCP Server MCP server in PolicyLayer and add a rule for read_graph: 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.
read_graph 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 read_graph 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 read_graph. 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.
read_graph 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.
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Type a name, get the same breakdown: verified identity, auth posture, risk grade, capabilities, recommended policy.
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