Get statistics about the indexed knowledge base. Returns counts of documents, chunks, entities, and relationships. Use for corpus health checks or to understand the scale of available data.
AI agents call get_corpus_stats to retrieve information from GraphRAG Llama Index MCP Server without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
get_corpus_stats performs read-only querying of corpus metadata. It retrieves aggregate statistics about the indexed knowledge base without side effects, data modification, or execution capabilities. The tool is designed for observability and understanding data scale, making it a straightforward Read category risk with low severity due to minimal blast radius if misused by an AI agent.
From the tool's definition Tool returns statistics and counts (documents, chunks, entities, relationships) with no ability to modify, delete, or execute operations. Description explicitly states 'Returns counts' and 'health checks' — purely informational retrieval.
Attacks that exploit this kind of access
Get statistics about the indexed knowledge base. Returns counts of documents, chunks, entities, and relationships. Use for corpus health checks or to understand the scale of available data. It is categorised as a Read tool in the GraphRAG Llama Index MCP Server MCP Server, which means it retrieves data without modifying state.
Register the GraphRAG Llama Index MCP Server MCP server in PolicyLayer and add a rule for get_corpus_stats: 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 GraphRAG Llama Index MCP Server. Nothing to install.
get_corpus_stats 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 get_corpus_stats 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 get_corpus_stats. 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.
get_corpus_stats is provided by the GraphRAG Llama Index MCP Server MCP server (t-nhannguyen/graphrag-llamaindex). 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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