Explain Microsoft Graph throttling: what causes 429 errors, how to handle Retry-After, and service-specific limits.
AI agents call graph_explain_throttling 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 is a reference/documentation tool that educates users about Microsoft Graph API throttling policies and error handling. It retrieves or presents information about rate limits and best practices for handling throttling responses. No data is created, modified, executed, or destroyed—only informational content is provided to help developers understand and respond to API rate-limiting scenarios.
From the tool's definition Tool name 'graph_explain_throttling' and description indicate it explains throttling behavior, handles 429 errors, and discusses Retry-After headers and service limits. It provides information and guidance without modifying, executing, or deleting data.
Attacks that exploit this kind of access
Explain Microsoft Graph throttling: what causes 429 errors, how to handle Retry-After, and service-specific limits. 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 graph_explain_throttling: 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.
graph_explain_throttling 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 graph_explain_throttling 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 graph_explain_throttling. 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.
graph_explain_throttling 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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