zap-wallet-set

Set the NWC wallet URI for the active identity. Each persona can have its own Lightning wallet.

SERVERNostr Bray SOURCEnostr-bray

Medium RISK CLASS

Category Write

Parameters 00 required

Recommended Rate-limitedsee the rule below

Registry record Grade F, identity unverified Pull the record →

This record as markdown: /tools/dev-forgesworn-bray/zap-wallet-set.md

WHAT IT DOES

What zap-wallet-set does on Nostr Bray

AI agents use zap-wallet-set to create or update resources in Nostr Bray, usually the action step of a workflow, after the agent has gathered context. Every call changes real data in your Nostr Bray environment.

RISK

Why zap-wallet-set is rated Medium

This tool modifies a critical financial configuration — the NWC (Nostr Wallet Connect) URI that links an identity to a Lightning wallet. While it doesn't directly move money, setting or overwriting this URI could redirect all future zap/payment flows to an attacker-controlled wallet, making it a high-severity Write operation with near-Financial implications.

From the tool's definition 'Set the NWC wallet URI for the active identity' and 'Each persona can have its own Lightning wallet'

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs zap-wallet-set 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-wallet-set, this is the rule to start with:

zap-wallet-set Rate-limited

zap-wallet-set 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.

View as policy code

policy.json

{
  "version": "1",
  "default": "deny",
  "tools": {
    "zap-wallet-set": {
      "limits": [
        {
          "counter": "zap-wallet-set_rate",
          "window": "minute",
          "max": 30,
          "scope": "grant"
        }
      ]
    }
  }
}

LIMIT 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-wallet-set call is checked against it from then on.

FAQ

Questions about zap-wallet-set

What does the zap-wallet-set tool do? +

Set the NWC wallet URI for the active identity. Each persona can have its own Lightning wallet. It is categorised as a Write tool in the Nostr Bray MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on zap-wallet-set? +

Register the Nostr Bray MCP server in PolicyLayer and add a rule for zap-wallet-set: 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-wallet-set? +

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

Can I rate-limit zap-wallet-set? +

Yes. Add a rate_limit block to the zap-wallet-set 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-wallet-set completely? +

Set action: deny in the PolicyLayer policy for zap-wallet-set. 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-wallet-set? +

zap-wallet-set 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.

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