# encode-npub

Encode a hex public key as a bech32 npub.

Agent View of the PolicyLayer registry record for `encode-npub`. HTML page: https://policylayer.com/tools/dev-forgesworn-bray/encode-npub

## Facts

- Tool: `encode-npub`
- Server: Nostr Bray (`nostr-bray`) — https://policylayer.com/tools/dev-forgesworn-bray.md
- Install: `npx -y nostr-bray`
- Homepage: https://github.com/forgesworn/bray
- Risk category: Read (Low risk)
- Registry record: grade F, identity unverified
- Server rate-limited: no
- Parameters: 0
- Recommended policy verdict: Allowed

## Example call (MCP tools/call, JSON-RPC 2.0)

```json
{
  "jsonrpc": "2.0",
  "id": 1,
  "method": "tools/call",
  "params": {
    "name": "encode-npub",
    "arguments": {}
  }
}
```

## 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 own 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."

## Use case

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.

## Recommended policy (PolicyLayer)

Verdict: **Allowed**. Enforced by the PolicyLayer MCP gateway (https://policylayer.com/mcp-gateway) before a call reaches Nostr Bray:

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

## Other tools on Nostr Bray (239)

- `blossom-delete` — Destructive — https://policylayer.com/tools/dev-forgesworn-bray/blossom-delete.md
- `group-remove-user` — Destructive — https://policylayer.com/tools/dev-forgesworn-bray/group-remove-user.md
- `label-remove` — Destructive — https://policylayer.com/tools/dev-forgesworn-bray/label-remove.md
- `marketplace-credentials-clear` — Destructive — https://policylayer.com/tools/dev-forgesworn-bray/marketplace-credentials-clear.md
- `marketplace-retire` — Destructive — https://policylayer.com/tools/dev-forgesworn-bray/marketplace-retire.md
- `social-delete` — Destructive — https://policylayer.com/tools/dev-forgesworn-bray/social-delete.md
- `tombstone` — Destructive — https://policylayer.com/tools/dev-forgesworn-bray/tombstone.md
- `trust-revoke` — Destructive — https://policylayer.com/tools/dev-forgesworn-bray/trust-revoke.md
- `vault-revoke` — Destructive — https://policylayer.com/tools/dev-forgesworn-bray/vault-revoke.md
- `zap-wallet-clear` — Destructive — https://policylayer.com/tools/dev-forgesworn-bray/zap-wallet-clear.md
- `cast-spell` — Execute — https://policylayer.com/tools/dev-forgesworn-bray/cast-spell.md
- `execute-action` — Execute — https://policylayer.com/tools/dev-forgesworn-bray/execute-action.md
- `identity-restore-shamir` — Execute — https://policylayer.com/tools/dev-forgesworn-bray/identity-restore-shamir.md
- `identity-switch` — Execute — https://policylayer.com/tools/dev-forgesworn-bray/identity-switch.md
- `marketplace-probe` — Execute — https://policylayer.com/tools/dev-forgesworn-bray/marketplace-probe.md
- `nip44-encrypt` — Execute — https://policylayer.com/tools/dev-forgesworn-bray/nip44-encrypt.md
- `onboard-verified` — Execute — https://policylayer.com/tools/dev-forgesworn-bray/onboard-verified.md
- `relay-auth` — Execute — https://policylayer.com/tools/dev-forgesworn-bray/relay-auth.md
- `trust-attest-chain` — Execute — https://policylayer.com/tools/dev-forgesworn-bray/trust-attest-chain.md
- `trust-ring-lsag-sign` — Execute — https://policylayer.com/tools/dev-forgesworn-bray/trust-ring-lsag-sign.md
- `trust-ring-prove` — Execute — https://policylayer.com/tools/dev-forgesworn-bray/trust-ring-prove.md
- `trust-spoken-verify` — Execute — https://policylayer.com/tools/dev-forgesworn-bray/trust-spoken-verify.md
- `vault-encrypt` — Execute — https://policylayer.com/tools/dev-forgesworn-bray/vault-encrypt.md
- `marketplace-pay` — Financial — https://policylayer.com/tools/dev-forgesworn-bray/marketplace-pay.md
- `zap-make-invoice` — Financial — https://policylayer.com/tools/dev-forgesworn-bray/zap-make-invoice.md
- `zap-send` — Financial — https://policylayer.com/tools/dev-forgesworn-bray/zap-send.md
- `article-list` — Read — https://policylayer.com/tools/dev-forgesworn-bray/article-list.md
- `article-read` — Read — https://policylayer.com/tools/dev-forgesworn-bray/article-read.md
- `badge-list` — Read — https://policylayer.com/tools/dev-forgesworn-bray/badge-list.md
- `blossom-check` — Read — https://policylayer.com/tools/dev-forgesworn-bray/blossom-check.md
- …and 209 more: https://policylayer.com/tools/dev-forgesworn-bray.md

## For agents

This record is a snapshot. Live verdicts and the full registry:

- Check every server in your MCP config at once: `npx -y policylayer stack`
- Vet a server before you add it: install the mcp-precheck skill — `npx skills add https://policylayer.com` (skill text: https://policylayer.com/skill.md)
- Query the registry over MCP: endpoint `https://api.policylayer.com/mcp` — tools `check_mcp_server`, `check_mcp_stack`, `check_tool`, `search_registry`, `get_change_events`

---

Source: the PolicyLayer MCP registry — one continuously verified record per MCP server. Full record: https://policylayer.com/registry?q=dev-forgesworn-bray · API: https://policylayer.com/registry/api · Policy library: https://policylayer.com/policies/dev-forgesworn-bray