Search Microsoft Graph REST API endpoints by keyword. Covers SharePoint sites and lists, OneDrive files, Exchange Online mail, Outlook calendar, Azure AD users, Microsoft 365 groups, Teams, Planner, OneNote, To Do, and webhook subscriptions.
AI agents call search_graph_api to retrieve information from Ms Graph Dev without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool performs discovery and information retrieval about available Graph API endpoints. It has no side effects on data or systems—it merely helps identify and understand what APIs are available. This is consistent with the Read category, which covers retrieval and query operations without side effects.
From the tool's definition Tool description states it 'Search[es] Microsoft Graph REST API endpoints by keyword' with no mention of modifying, executing, or deleting data.
Attacks that exploit this kind of access
Search Microsoft Graph REST API endpoints by keyword. Covers SharePoint sites and lists, OneDrive files, Exchange Online mail, Outlook calendar, Azure AD users, Microsoft 365 groups, Teams, Planner, OneNote, To Do, and webhook subscriptions. It is categorised as a Read tool in the Ms Graph Dev MCP Server, which means it retrieves data without modifying state.
Register the Ms Graph Dev MCP server in PolicyLayer and add a rule for search_graph_api: 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 Ms Graph Dev. Nothing to install.
search_graph_api 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 search_graph_api 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 search_graph_api. 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.
search_graph_api is provided by the Ms Graph Dev MCP server (stubbedev/ms-graph-dev-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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