privacy-verify-age
Verify an age range proof. Checks that the subject is within the expected age range without learning their exact age.
This record as markdown: /tools/dev-forgesworn-bray/privacy-verify-age.md
What privacy-verify-age does on Nostr Bray
AI agents call privacy-verify-age 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 privacy-verify-age is rated Low
This tool reads and validates cryptographic proof data to determine if an age falls within a specified range. It retrieves information (returns a yes/no or proof status) without creating, modifying, deleting resources, or triggering external code execution. The privacy-preserving nature (not learning exact age) confirms it is a read-only verification operation.
From the tool's definition Tool performs verification/checking of an age range proof without modifying, deleting, or executing external operations. Description indicates it 'Checks that the subject is within the expected age range' — a query/validation operation with no side effects.
Attacks that exploit this kind of access
The rule that runs privacy-verify-age 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 privacy-verify-age, this is the rule to start with:
privacy-verify-age 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 privacy-verify-age call is checked against it from then on.
Questions about privacy-verify-age
Verify an age range proof. Checks that the subject is within the expected age range without learning their exact age. 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 privacy-verify-age: 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.
privacy-verify-age 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 privacy-verify-age 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 privacy-verify-age. 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.
privacy-verify-age 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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