List available filter fields/attributes for a section. GET /companies/filters/fields. Required: section. Returns available filter attributes for the section.
AI agents call list_filter_fields to retrieve information from Rebillia MCP Server without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool retrieves schema/metadata information about available filter fields for a given section. It performs a read-only query (GET request) that returns information without creating, modifying, deleting, or executing any operations. The data returned is informational metadata used to support filtering operations elsewhere. This is a classic Read operation with minimal blast radius if misused.
From the tool's definition Tool name is 'list_filter_fields' and description states 'List available filter fields/attributes for a section' using GET request. It returns metadata about available filter attributes with no mutation or side effects.
Attacks that exploit this kind of access
List available filter fields/attributes for a section. GET /companies/filters/fields. Required: section. Returns available filter attributes for the section. It is categorised as a Read tool in the Rebillia MCP Server MCP Server, which means it retrieves data without modifying state.
Register the Rebillia MCP Server MCP server in PolicyLayer and add a rule for list_filter_fields: 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 Rebillia MCP Server. Nothing to install.
list_filter_fields 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 list_filter_fields 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 list_filter_fields. 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.
list_filter_fields is provided by the Rebillia MCP Server MCP server (rhinosaas/rebillia-mcp-server). 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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