zap-make-invoice

Generate a Lightning invoice via NWC to receive payments.

SERVERNostr Bray SOURCEnostr-bray

Critical RISK CLASS

Category Financial

Parameters 00 required

Recommended Approval-gatedsee the rule below

Registry record Grade F, identity unverified Pull the record →

This record as markdown: /tools/dev-forgesworn-bray/zap-make-invoice.md

WHAT IT DOES

What zap-make-invoice does on Nostr Bray

AI agents use zap-make-invoice to commit financial operations through Nostr Bray, usually the final step of a payment, billing, or trading workflow. A call moves real money.

RISK

Why zap-make-invoice is rated Critical

This tool initiates financial operations by generating Lightning Network invoices for receiving payments. While generating an invoice doesn't directly move funds, it creates financial obligations and payment requests that are part of the Bitcoin/Lightning financial infrastructure. Misuse could lead to fraudulent payment solicitation or financial manipulation, warranting a Financial classification with high severity.

From the tool's definition Generate a Lightning invoice via NWC to receive payments

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs zap-make-invoice safely

PolicyLayer is an MCP gateway: it sits between your AI agents and Nostr Bray, and checks every tool call against a rule you set before the call runs. Nothing changes on the server itself. For zap-make-invoice, this is the rule to start with:

zap-make-invoice Approval-gated

Any call to zap-make-invoice is blocked until a human approves it. The rest of the server keeps working.

View as policy code

policy.json

{
  "version": "1",
  "default": "deny",
  "tools": {
    "zap-make-invoice": {
      "deny_if": [
        {
          "conditions": [],
          "on_deny": "Requires human approval."
        }
      ]
    }
  }
}

GATE THIS TOOL → Instant setup, no code required.

The button opens the PolicyLayer dashboard: create your workspace, connect Nostr Bray, apply this rule, and every zap-make-invoice call is checked against it from then on.

FAQ

Questions about zap-make-invoice

What does the zap-make-invoice tool do? +

Generate a Lightning invoice via NWC to receive payments. It is categorised as a Financial tool in the Nostr Bray MCP Server, which means it involves financial transactions. Block by default and require explicit approval.

How do I enforce a policy on zap-make-invoice? +

Register the Nostr Bray MCP server in PolicyLayer and add a rule for zap-make-invoice: 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 Nostr Bray. Nothing to install.

What risk level is zap-make-invoice? +

zap-make-invoice 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 zap-make-invoice? +

Yes. Add a rate_limit block to the zap-make-invoice 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 zap-make-invoice completely? +

Set action: deny in the PolicyLayer policy for zap-make-invoice. 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 zap-make-invoice? +

zap-make-invoice is provided by the Nostr Bray MCP server (nostr-bray). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

KEEP EXPLORING

More on Nostr Bray, and thousands of servers like it.

This server

All 240 Nostr Bray tools → Critical-risk tools on this server →

Across the catalogue

pay_invoice on Bitcoin MCP Server →make_best_offer on Ebay →approve_supplier_invoice on Tripletex MCP Server → All critical-risk MCP tools → The MCP Attack Database →

Guides

Govern MCP payment tools →Human-in-the-loop →Tool call approval →