Medium Risk

resume_previous_session

Resume work from a previous session. Use when returning to a project after a break.

Part of the Velixar server.

resume_previous_session can modify Velixar data, with no limits today. PolicyLayer puts allow, deny, and rate-limit rules on every call. Live in minutes.

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AI agents use resume_previous_session to create or modify resources in Velixar. Write operations carry medium risk because an autonomous agent could trigger bulk unintended modifications. Rate limits prevent a single agent session from making hundreds of changes in rapid succession. Argument validation ensures the agent passes expected values.

Without a policy, an AI agent could call resume_previous_session repeatedly, creating or modifying resources faster than any human could review. PolicyLayer's rate limiting ensures write operations happen at a controlled pace, and argument validation catches malformed or unexpected inputs before they reach Velixar.

Write tools can modify data. A rate limit prevents runaway bulk operations from AI agents.

policy.json
{
  "version": "1",
  "default": "deny",
  "tools": {
    "resume_previous_session": {
      "limits": [
        {
          "counter": "resume_previous_session_rate",
          "window": "minute",
          "max": 30,
          "scope": "grant"
        }
      ]
    }
  }
}

See the full Velixar policy for all 58 tools.

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These attack patterns abuse exactly the kind of access resume_previous_session gives an agent. Each links to the full case and the policy that stops it:

Browse the full MCP Attack Database →

Every attack above starts with a tool call. PolicyLayer checks each one against your policy first, so resume_previous_session only ever does what you allow.

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Other write tools across the catalogue. The same approach applies to each: rate-limit and validate the arguments.

What does the resume_previous_session tool do? +

Resume work from a previous session. Use when returning to a project after a break.. It is categorised as a Write tool in the Velixar MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on resume_previous_session? +

Register the Velixar MCP server in PolicyLayer and add a rule for resume_previous_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 Velixar. Nothing to install.

What risk level is resume_previous_session? +

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

Can I rate-limit resume_previous_session? +

Yes. Add a rate_limit block to the resume_previous_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 resume_previous_session completely? +

Set action: deny in the PolicyLayer policy for resume_previous_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 resume_previous_session? +

resume_previous_session is provided by the Velixar MCP server (velixar-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 Velixar tool call.

Deterministic rules across all 58 Velixar tools. Per-identity grants. Full audit log. Live in minutes. Nothing to install.

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