sign_action

THE RISK

Low Risk

Why sign_action needs a policy

The tool name 'sign_action' suggests cryptographic signing of an action, which in the context of this server (quantum-safe audit trails with ML-DSA, multi-party authorization) likely means creating a digital signature record. This could be a Write operation (recording a signature) or part of an authorization flow. However, with an empty description, the exact behavior is unclear.

From the tool's definition Tool name is 'sign_action'; description is empty or uninformative.

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

POLICY

How to control sign_action

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

policy.json

{
  "version": "1",
  "default": "deny",
  "tools": {
    "sign_action": {
      "limits": [
        {
          "counter": "sign_action_rate",
          "window": "minute",
          "max": 60,
          "scope": "grant"
        }
      ]
    }
  }
}

sign_action gets a rate cap, and everything else on the server is denied unless you say otherwise.

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

SET A RULE FOR THIS TOOL →

Free to start. No card required.

EXPLORE

Related tools and policies

More Pypi:asqav tools

Destructive delete_tool_policy Remove a local enforcement policy for a tool. Execute enforced_tool_call enforced_tool_call Execute gate_action gate_action Write create_tool_policy create_tool_policy Read check_policy Check if an action is allowed by the organization's policies. Read get_agent Get details for a specific AI agent. Read list_agents List all registered AI agents in the organization. Read list_tool_policies List all active local tool enforcement policies.

All 15 Pypi:asqav tools →

Other tools on other servers

Android Forensics ADB MCP Server generate_app_analysis_report Ethereum Tools add Math MCP Server complex_analysis_suite Crypto_MCP aes_encrypt

Go deeper

The MCP Attack Database → Documented attack patterns against MCP deployments — and the policies that stop them.
Tool risk categories → How PolicyLayer classifies MCP tools by what they can do.
MCP tool → What an MCP tool is and how clients discover and call it.
Rate Limiting MCP Tool Calls: A Practical Guide →
MCP Security: Why Prompt Guardrails Aren't Enough →

FAQ

Questions about sign_action

What does the sign_action tool do? +

sign_action. It is categorised as a Other tool in the Pypi:asqav MCP Server, which means it performs auxiliary operations.

How do I enforce a policy on sign_action? +

Register the Pypi:asqav MCP server in PolicyLayer and add a rule for sign_action: 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 Pypi:asqav. Nothing to install.

What risk level is sign_action? +

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

Can I rate-limit sign_action? +

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

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

sign_action is provided by the Pypi:asqav MCP server (jagmarques/asqav-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

Enforce policy on every Pypi:asqav tool call.

Start from Pypi:asqav, add the rest of your stack, and see everything your agents can call. Then put policy on all of it.

CHECK YOUR STACK →