MCP Tool Reference Low Risk

calendar_events_instances

List instances of a recurring event [read]

Part of the Google Workspace Calendar (gws CLI) MCP server. Enforce policies on this tool with Intercept, the open-source MCP proxy.

WHEN AI AGENTS USE THIS TOOL

AI agents call calendar_events_instances to retrieve information from Google Workspace Calendar (gws CLI) without modifying any data. This is common in research, monitoring, and reporting workflows where the agent needs context before taking action. Because read operations don't change state, they are generally safe to allow without restrictions — but you may still want rate limits to control API costs.

WHY ENFORCE A POLICY ON CALENDAR_EVENTS_INSTANCES

Even though calendar_events_instances only reads data, uncontrolled read access can leak sensitive information or rack up API costs. An agent caught in a retry loop could make thousands of calls per minute. A rate limit gives you a safety net without blocking legitimate use.

RECOMMENDED POLICY

Read-only tools are safe to allow by default. No rate limit needed unless you want to control costs.

google-workspace-calendar.yaml
tools:
  calendar_events_instances:
    rules:
      - action: allow

See the full Google Workspace Calendar (gws CLI) policy for all 37 tools.

DETAILS

Tool Name

calendar_events_instances

Category

Read

Risk Level

Low

MORE GOOGLE WORKSPACE CALENDAR (GWS CLI) TOOLS

View all 37 tools →

SIMILAR READ TOOLS ON OTHER SERVERS

RELATED READING

FREQUENTLY ASKED QUESTIONS

What does the calendar_events_instances tool do?

List instances of a recurring event [read]. It is categorised as a Read tool in the Google Workspace Calendar (gws CLI), which means it retrieves data without modifying state.

How do I enforce a policy on calendar_events_instances?

Add a rule in your Intercept YAML policy under the tools section for calendar_events_instances. You can allow, deny, rate-limit, or validate arguments. Then run Intercept as a proxy in front of the Google Workspace Calendar (gws CLI) MCP server.

What risk level is calendar_events_instances?

calendar_events_instances is a Read tool with low risk. Read-only tools are generally safe to allow by default.

Can I rate-limit calendar_events_instances?

Yes. Add a rate_limit block to the calendar_events_instances rule in your Intercept 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.

How do I block calendar_events_instances completely?

Set action: deny in the Intercept policy for calendar_events_instances. 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.

What MCP server provides calendar_events_instances?

calendar_events_instances is provided by the Google Workspace Calendar (gws CLI) MCP server (gws mcp -s calendar). Intercept sits as a proxy in front of this server to enforce policies before tool calls reach the server.

ENFORCE POLICIES ON GOOGLE WORKSPACE CALENDAR (GWS CLI)

Open source. One binary. Zero dependencies.