moderation-filter

Filter a set of events against the active identity\

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/moderation-filter.md

WHAT IT DOES

What moderation-filter does on Nostr Bray

AI agents call moderation-filter 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 moderation-filter is rated Low

The tool appears to filter/query events based on an active identity, which is a read-only operation with no side effects. It retrieves or evaluates data without modifying anything. Confidence is moderate because the description is brief and 'filter' could imply some state change, but the most natural interpretation is a read/query operation.

From the tool's definition Filter a set of events against the active identity

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs moderation-filter 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 moderation-filter, this is the rule to start with:

moderation-filter Allowed

moderation-filter 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": {
    "moderation-filter": {}
  }
}

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 moderation-filter call is checked against it from then on.

FAQ

Questions about moderation-filter

What does the moderation-filter tool do? +

Filter a set of events against the active identity\. 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 moderation-filter? +

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

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

Can I rate-limit moderation-filter? +

Yes. Add a rate_limit block to the moderation-filter 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 moderation-filter completely? +

Set action: deny in the PolicyLayer policy for moderation-filter. 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 moderation-filter? +

moderation-filter 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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