identity-create

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/identity-create.md

WHAT IT DOES

What identity-create does on Nostr Bray

AI agents use identity-create 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 identity-create is rated Medium

This tool creates a new identity artifact (npub and mnemonic) that persists and must be stored. While it does not modify existing data, it irreversibly generates a new cryptographic credential that the user becomes responsible for.

From the tool's definition Tool name: identity-create. Description explicitly states it 'Generate[s] a fresh Nostr identity' and 'Returns { npub, mnemonic }'. The mnemonic seed is a cryptographic secret that, once generated, becomes the authoritative credential for a new identity.

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs identity-create 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 identity-create, this is the rule to start with:

identity-create Rate-limited

identity-create 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": {
    "identity-create": {
      "limits": [
        {
          "counter": "identity-create_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 identity-create call is checked against it from then on.

FAQ

Questions about identity-create

What does the identity-create tool do? +

Generate a fresh Nostr identity with a BIP-39 mnemonic seed. Returns { npub, mnemonic }. Store the mnemonic securely — it will not be shown again. Use this when the user needs a brand new identity unrelated to the current one. 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 identity-create? +

Register the Nostr Bray MCP server in PolicyLayer and add a rule for identity-create: 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 identity-create? +

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

Can I rate-limit identity-create? +

Yes. Add a rate_limit block to the identity-create 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 identity-create completely? +

Set action: deny in the PolicyLayer policy for identity-create. 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 identity-create? +

identity-create 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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