update_active_context · Claude Session Continuity MCP

WHAT IT DOES

What update_active_context does on Claude Session Continuity

AI agents use update_active_context to create or update resources in Claude Session Continuity — usually the action step of a workflow, after the agent has gathered context. Every call changes real data in your Claude Session Continuity environment.

WHY IT NEEDS A POLICY

Why update_active_context needs a policy

The tool creates or modifies project context data (session continuity system) but does not delete or destroy data irreversibly. It is a Write operation that updates session state to enable context restoration.

From the tool's definition Tool name 'update_active_context' and description state it 'updates' project's active context, called when ending a task. This modifies stored session state reversibly.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

update_active_context Rate-limited

update_active_context stays usable, but capped — an agent stuck in a loop can't make hundreds of changes a minute. Everything else on the server is denied unless you say otherwise.

View as policy code

policy.json

{
  "version": "1",
  "default": "deny",
  "tools": {
    "update_active_context": {
      "limits": [
        {
          "counter": "update_active_context_rate",
          "window": "minute",
          "max": 30,
          "scope": "grant"
        }
      ]
    }
  }
}

LIMIT THIS TOOL →

Instant setup, no code required.

PolicyLayer is an MCP gateway: every tool call is checked against your rule before it reaches Claude Session Continuity, so you can run agents against it safely.

FAQ

Questions about update_active_context

What does the update_active_context tool do? +

프로젝트의 활성 컨텍스트를 업데이트합니다. 작업 종료 시 호출. It is categorised as a Write tool in the Claude Session Continuity MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on update_active_context? +

Register the Claude Session Continuity MCP server in PolicyLayer and add a rule for update_active_context: 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 Claude Session Continuity. Nothing to install.

What risk level is update_active_context? +

update_active_context is a Write tool with medium risk. Write tools should be rate-limited to prevent accidental bulk modifications.

Can I rate-limit update_active_context? +

Yes. Add a rate_limit block to the update_active_context 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 update_active_context completely? +

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

update_active_context is provided by the Claude Session Continuity MCP server (leesgit/claude-session-continuity-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.