mint_tokens

THE RISK

Critical Risk

Why mint_tokens needs a policy

Minting tokens is a financial operation that creates new units of currency/stablecoin out of thin air and transfers them to a recipient. On a stablecoin payments platform, this has direct financial consequences — it increases token supply and can be used to fraudulently credit accounts. If misused by an AI agent, it could result in unbacked token issuance, financial fraud, or economic damage to the stablecoin system.

From the tool's definition 'Mint new TIP-20 tokens to a recipient address' — minting tokens creates new monetary supply and assigns financial value to a recipient, directly impacting the stablecoin economy on the Tempo blockchain.

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

POLICY

How to control mint_tokens

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

policy.json

{
  "version": "1",
  "default": "deny",
  "tools": {
    "mint_tokens": {
      "deny_if": [
        {
          "conditions": [],
          "on_deny": "Requires human approval."
        }
      ]
    }
  }
}

Any call to mint_tokens is blocked until a human approves it. The rest of the server keeps working.

Create a free account and register Tempo — 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

More Tempo tools

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All 61 Tempo tools →

Financial tools on other servers

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Go deeper

Govern MCP payment tools → Approval gates, spend caps, and per-identity scopes on every refund, payout, and charge your agents make.
Critical-risk tools in Tempo → Every critical-risk tool this server exposes, in one view.
All critical-risk MCP tools → Every critical-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.
Human-in-the-loop → When a tool call should wait for a person — and when policy can decide alone.
Tool call approval → Approval gates on individual tool calls: auto-allow, prompt, or deny.
How to Add Spending Controls to Any MCP Agent →
Rate Limiting MCP Tool Calls: A Practical Guide →
PolicyLayer vs alternatives → How deterministic, per-call MCP policy compares with gateways, identity layers, and authorisation platforms.

FAQ

Questions about mint_tokens

What does the mint_tokens tool do? +

Mint new TIP-20 tokens to a recipient address. It is categorised as a Financial tool in the Tempo MCP Server, which means it involves financial transactions. Block by default and require explicit approval.

How do I enforce a policy on mint_tokens? +

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

What risk level is mint_tokens? +

mint_tokens is a Financial tool with critical risk. Critical-risk tools should be blocked by default and only enabled with explicit human approval.

Can I rate-limit mint_tokens? +

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

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

mint_tokens is provided by the Tempo MCP server (arome3/tempo-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

Enforce policy on every Tempo tool call.

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

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