Get the full schema of a list or library: all columns (type, required, default, indexed), all views, and list metadata. Works on both lists (baseTemplate 100) and document libraries (101).
AI agents call get_list_schema to retrieve information from SharePoint MCP Server without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool has no side effects beyond information retrieval. It queries and returns schema metadata about SharePoint lists and libraries without creating, modifying, or deleting any data. The blast radius of misuse is minimal—an agent could only access existing schema information, which is typically not sensitive beyond visibility. No financial, destructive, or execution capabilities are present.
From the tool's definition Tool name 'get_list_schema' and description states it retrieves/queries schema metadata (columns, views, list metadata) with no mention of modification, deletion, or execution of external operations. The verb 'Get' and action phrase 'retrieves...all columns...
Attacks that exploit this kind of access
Get the full schema of a list or library: all columns (type, required, default, indexed), all views, and list metadata. Works on both lists (baseTemplate 100) and document libraries (101). It is categorised as a Read tool in the SharePoint MCP Server MCP Server, which means it retrieves data without modifying state.
Register the SharePoint MCP Server MCP server in PolicyLayer and add a rule for get_list_schema: 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 SharePoint MCP Server. Nothing to install.
get_list_schema 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_list_schema 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_list_schema. 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_list_schema is provided by the SharePoint MCP Server MCP server (lukassevcik/sharepoint-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.
Type a name, get the same breakdown: verified identity, auth posture, risk grade, capabilities, recommended policy.
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