unset_agent_wallet

THE RISK

Medium Risk

Why unset_agent_wallet needs a policy

This tool removes an association between an agent wallet and an Identity Registry entry. While it doesn't delete the wallet itself, unlinking from an identity registry is a significant write operation that could disrupt agent operations, break authentication/authorization flows, and potentially lock out access to funds.

From the tool's definition Unlink agent wallet from Identity Registry entry

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

POLICY

How to control unset_agent_wallet

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

policy.json

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

unset_agent_wallet 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.

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

LIMIT THIS TOOL →

Free to start. No card required.

EXPLORE

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Go deeper

The MCP Attack Database → Documented attack patterns against MCP deployments — and the policies that stop them.
Argument validation → Checking tool call arguments against schema and policy before they run.
Scoped token → Per-person credentials that grant a defined subset of servers and tools.
Rate Limiting MCP Tool Calls: A Practical Guide →
MCP Security: Why Prompt Guardrails Aren't Enough →

FAQ

Questions about unset_agent_wallet

What does the unset_agent_wallet tool do? +

Unlink agent wallet from Identity Registry entry. It is categorised as a Write tool in the Waiaas MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on unset_agent_wallet? +

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

What risk level is unset_agent_wallet? +

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

Can I rate-limit unset_agent_wallet? +

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

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

unset_agent_wallet is provided by the Waiaas MCP server (minhoyoo-iotrust/waiaas). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

Enforce policy on every Waiaas tool call.

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

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