get_activities_since

THE RISK

Low Risk

Why get_activities_since needs a policy

The tool is a straightforward read-only query that fetches activity logs or records from a session. It has no ability to create, modify, delete, or execute code—it only retrieves and returns information. The blast radius if misused (e.g., exfiltrating activity logs) is limited to information disclosure, making this low severity.

From the tool's definition Tool retrieves session activities newer than a provided timestamp; explicitly a 'Get' operation that queries historical data without modifying anything.

Documented attack patterns abuse exactly the kind of access get_activities_since gives an agent:

POLICY

How to control get_activities_since

PolicyLayer is an MCP gateway — it sits between your AI agents and Jules MCP Server, and nothing reaches the server without passing your rules. This is the rule we recommend for get_activities_since:

policy.json

{
  "version": "1",
  "default": "deny",
  "tools": {
    "get_activities_since": {}
  }
}

get_activities_since is read-only, so it stays allowed — but everything else on the server is denied unless you say otherwise.

Create a free account and register Jules MCP Server — nothing to install.
Add this policy — paste it, or build it visually.
Point your MCP client (Claude, Cursor, anything) at your gateway URL.

CAP THIS TOOL →

Free to start. No card required.

EXPLORE

Related tools and policies

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All 11 Jules MCP Server tools →

Read tools on other servers

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Go deeper

The MCP Attack Database → Documented attack patterns against MCP deployments — and the policies that stop them.
Data exfiltration → How read access becomes an exfiltration channel when chained with untrusted content.
MCP token cost → What connecting this server costs in context-window tokens on every request.
Rate Limiting MCP Tool Calls: A Practical Guide →
MCP Security: Why Prompt Guardrails Aren't Enough →

FAQ

Questions about get_activities_since

What does the get_activities_since tool do? +

Get session activities newer than a provided ISO timestamp. It is categorised as a Read tool in the Jules MCP Server MCP Server, which means it retrieves data without modifying state.

How do I enforce a policy on get_activities_since? +

Register the Jules MCP Server MCP server in PolicyLayer and add a rule for get_activities_since: 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 Jules MCP Server. Nothing to install.

What risk level is get_activities_since? +

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

Can I rate-limit get_activities_since? +

Yes. Add a rate_limit block to the get_activities_since 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.

How do I block get_activities_since completely? +

Set action: deny in the PolicyLayer policy for get_activities_since. 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 get_activities_since? +

get_activities_since is provided by the Jules MCP Server MCP server (savethepolarbears/jules-mcp-server). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

Enforce policy on every Jules MCP Server tool call.

Start from Jules MCP Server, add the rest of your stack, and see everything your agents can call. Then put policy on all of it.

CHECK YOUR STACK →