AI agents call ethics_filter to retrieve information from Eff without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
The tool appears to evaluate or query data (user stories) against ethical criteria and return scoring/analysis results. This is a read-only analytical operation with no side effects, no data modification, no code execution, and no destructive or financial impact. Confidence is moderate (0.75) rather than high because the description is empty, requiring inference from context.
From the tool's definition Tool name is 'ethics_filter' with empty description. Based on server context, this tool analyzes and scores user stories against ethical dimensions using the Ethics Filter Framework, alongside sibling tools like 'get_dimensions_rubric', 'get_examples', and…
Attacks that exploit this kind of access
ethics_filter. It is categorised as a Read tool in the Eff MCP Server, which means it retrieves data without modifying state.
Register the Eff MCP server in PolicyLayer and add a rule for ethics_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 Eff. Nothing to install.
ethics_filter 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 ethics_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.
Set action: deny in the PolicyLayer policy for ethics_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.
ethics_filter is provided by the Eff MCP server (vs3kulic/eff-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Every MCP server has a record like this.
Type a name, get the same breakdown: verified identity, auth posture, risk grade, capabilities, recommended policy.
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