encode-npub

Encode a hex public key as a bech32 npub.

SERVERNostr Bray SOURCEnostr-bray

Low RISK CLASS

Category Read

Parameters 00 required

Recommended Allowedsee the rule below

Registry record Grade F, identity unverified Pull the record →

This record as markdown: /tools/dev-forgesworn-bray/encode-npub.md

WHAT IT DOES

What encode-npub does on Nostr Bray

AI agents call encode-npub to retrieve information from Nostr Bray without modifying anything. It is typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.

RISK

Why encode-npub is rated Low

This tool performs a deterministic format conversion (hex to bech32) on cryptographic key data. It is a read-like operation that transforms input into output without querying external systems, modifying state, executing code, or triggering external operations. The operation is reversible and has no blast radius if misused by an AI agent.

From the tool's definition Tool name 'encode-npub' and description 'Encode a hex public key as a bech32 npub' indicate a pure encoding/transformation operation with no data retrieval, modification, deletion, or external side effects.

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs encode-npub 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 encode-npub, this is the rule to start with:

encode-npub Allowed

encode-npub is read-only, so it stays allowed. Everything else on the server is denied unless you say otherwise.

View as policy code

policy.json

{
  "version": "1",
  "default": "deny",
  "tools": {
    "encode-npub": {}
  }
}

ALLOW ONLY THIS TOOL → Instant setup, no code required.

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

FAQ

Questions about encode-npub

What does the encode-npub tool do? +

Encode a hex public key as a bech32 npub. It is categorised as a Read tool in the Nostr Bray MCP Server, which means it retrieves data without modifying state.

How do I enforce a policy on encode-npub? +

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

encode-npub is a Read tool with low risk. Read-only tools are generally safe to allow by default.

Can I rate-limit encode-npub? +

Yes. Add a rate_limit block to the encode-npub 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 encode-npub completely? +

Set action: deny in the PolicyLayer policy for encode-npub. 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 encode-npub? +

encode-npub 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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