This record as markdown: /tools/dev-forgesworn-bray/encode-note.md
What encode-note does on Nostr Bray
AI agents call encode-note 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.
Why encode-note is rated Low
This tool performs a stateless encoding function converting hex to bech32 format, a common operation in Nostr protocol implementations. It has no side effects, does not access external state beyond its input parameter, and cannot be misused to cause harm regardless of the argument provided. The output is purely derived from the input without affecting any data store or triggering external actions.
From the tool's definition Tool description states "Encode a hex event ID as a bech32 note" — this is a data transformation/encoding operation that converts one format to another without modifying, creating, deleting, or executing anything.
Attacks that exploit this kind of access
The rule that runs encode-note 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-note, this is the rule to start with:
encode-note is read-only, so it stays allowed. Everything else on the server is denied unless you say otherwise.
The button opens the PolicyLayer dashboard: create your workspace, connect Nostr Bray, apply this rule, and every encode-note call is checked against it from then on.
Questions about encode-note
Encode a hex event ID as a bech32 note. It is categorised as a Read tool in the Nostr Bray MCP Server, which means it retrieves data without modifying state.
Register the Nostr Bray MCP server in PolicyLayer and add a rule for encode-note: 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.
encode-note is a Read tool with low risk. Read-only tools are generally safe to allow by default.
Yes. Add a rate_limit block to the encode-note 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.
Set action: deny in the PolicyLayer policy for encode-note. 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.
encode-note 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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