This record as markdown: /tools/dev-forgesworn-bray/marketplace-reputation.md
What marketplace-reputation does on Nostr Bray
AI agents call marketplace-reputation 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 marketplace-reputation is rated Low
This tool performs a read-only check of reputation information about a service provider. It retrieves and returns data without creating, modifying, deleting, or triggering external side effects. The verb 'check' in the context of reputation systems typically means query or inspect. No evidence of write, destructive, execute, or financial operations.
From the tool's definition Tool name 'marketplace-reputation' and description 'Check a service provider' indicate a query/lookup operation that retrieves reputation data without modifying state or executing external operations.
Attacks that exploit this kind of access
The rule that runs marketplace-reputation 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 marketplace-reputation, this is the rule to start with:
marketplace-reputation 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 marketplace-reputation call is checked against it from then on.
Questions about marketplace-reputation
Check a service provider\. 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 marketplace-reputation: 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.
marketplace-reputation 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 marketplace-reputation 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 marketplace-reputation. 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.
marketplace-reputation 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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