unstick_session

THE RISK

High Risk

Why unstick_session needs a policy

The tool name and partial description suggest it performs an operational action (resuming, resetting, or forcibly recovering a stalled session), which constitutes triggering an external operation. The description is cut off, reducing confidence. Severity is medium as misuse could disrupt active sessions, but it is unlikely to be destructive or financial in nature.

From the tool's definition "Unstick a Claude Code session that" — description is truncated and uninformative beyond implying intervention on a stuck/hung session

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

POLICY

How to control unstick_session

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

policy.json

{
  "version": "1",
  "default": "deny",
  "tools": {
    "unstick_session": {
      "limits": [
        {
          "counter": "unstick_session_rate",
          "window": "minute",
          "max": 10,
          "scope": "grant"
        }
      ]
    }
  }
}

unstick_session stays usable, but rate-capped — a runaway agent can't fire it dozens of times a minute. Everything else on the server is denied unless you say otherwise.

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

RATE-LIMIT THIS TOOL →

Free to start. No card required.

EXPLORE

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Go deeper

High-risk tools in Claude Code Toolkit → Every high-risk tool this server exposes, in one view.
All high-risk MCP tools → Every high-risk tool across the catalogue, and the policy pattern that contains them.
The MCP Attack Database → Documented attack patterns against MCP deployments — and the policies that stop them.
Agent sandbox → Bounding what an agent can execute and where the boundary should sit.
Least privilege for MCP → Granting agents the minimum tool surface the task needs.
Rate Limiting MCP Tool Calls: A Practical Guide →
MCP Security: Why Prompt Guardrails Aren't Enough →

FAQ

Questions about unstick_session

What does the unstick_session tool do? +

Unstick a Claude Code session that. It is categorised as a Execute tool in the Claude Code Toolkit MCP Server, which means it can trigger actions or run processes. Use rate limits and argument validation.

How do I enforce a policy on unstick_session? +

Register the Claude Code Toolkit MCP server in PolicyLayer and add a rule for unstick_session: 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 Code Toolkit. Nothing to install.

What risk level is unstick_session? +

unstick_session is a Execute tool with high risk. Execute tools should be rate-limited and have argument validation enabled.

Can I rate-limit unstick_session? +

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

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

unstick_session is provided by the Claude Code Toolkit MCP server (asifkibria/claude-code-toolkit). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

Enforce policy on every Claude Code Toolkit tool call.

Start from Claude Code Toolkit, add the rest of your stack, and see everything your agents can call. Then put policy on all of it.

CHECK YOUR STACK →