verse_gen_device_declarations

THE RISK

Low Risk

Why verse_gen_device_declarations needs a policy

This tool reads information about currently selected actors and generates code declarations from them. It does not modify, delete, or execute anything — it produces text output (Verse device declarations) based on existing editor state. Generation/read of declarations is a non-destructive, read-like operation.

From the tool's definition "Generate typed Verse device declarations from currently selected actors"

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

POLICY

How to control verse_gen_device_declarations

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

policy.json

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

verse_gen_device_declarations 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 Uefn — nothing to install.
Add this policy — paste it, or build it visually.
Point your MCP client (Claude, Cursor, anything) at your gateway URL.

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EXPLORE

Related tools and policies

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All 143 Uefn 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 verse_gen_device_declarations

What does the verse_gen_device_declarations tool do? +

Generate typed Verse device declarations from currently selected actors. It is categorised as a Read tool in the Uefn MCP Server, which means it retrieves data without modifying state.

How do I enforce a policy on verse_gen_device_declarations? +

Register the Uefn MCP server in PolicyLayer and add a rule for verse_gen_device_declarations: 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 Uefn. Nothing to install.

What risk level is verse_gen_device_declarations? +

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

Can I rate-limit verse_gen_device_declarations? +

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

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

verse_gen_device_declarations is provided by the Uefn MCP server (quangdang46/uefn-verse-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

Enforce policy on every Uefn tool call.

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

CHECK YOUR STACK →