AI agents call xbrl_filing_summary to retrieve information from Arelle without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
Based on the tool name and the pattern of sibling tools on this server, 'xbrl_filing_summary' appears to retrieve or aggregate summary data from XBRL financial filings. The 'summary' operation is a classic read-only query with no side effects. Confidence is moderate (0.75) rather than high because the tool description is empty, preventing definitive confirmation of its behavior.
From the tool's definition Tool name 'xbrl_filing_summary' indicates data retrieval operation. Sibling tools like 'xbrl_company_facts', 'xbrl_concept_details', and 'xbrl_browse_taxonomy' are all Read operations.
Attacks that exploit this kind of access
xbrl_filing_summary. It is categorised as a Read tool in the Arelle MCP Server, which means it retrieves data without modifying state.
Register the Arelle MCP server in PolicyLayer and add a rule for xbrl_filing_summary: 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 Arelle. Nothing to install.
xbrl_filing_summary 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 xbrl_filing_summary 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 xbrl_filing_summary. 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.
xbrl_filing_summary is provided by the Arelle MCP server (thekinghippopotamus/arelle-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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