// SCAN REPORT

Arelle

46 tools. 5 can modify or destroy data without limits.

5 write tools that can modify data. Rate limits recommended.

Last updated: 3 Jul 2026

5 can modify or destroy data

41 read-only

46 tools total

Community server · catalogue entry verified 03/07/2026

How to control Arelle ↓

TOOL MAP

What Arelle exposes to your agents

Read (41) Write / Execute (5) Destructive / Financial (0)

Running more than one server? Check your whole stack →

MOST DANGEROUS TOOLS

High Risk

The most dangerous Arelle tools

Execute · High xbrl_run_formula The tool executes formulas—a form of computation—within XBRL filings. Execute · Medium xbrl_validate Validation tools typically execute a checking/processing operation against data rather than purely reading or writing it. Write · Low xbrl_close_filing This tool modifies the application state by closing a filing and deallocating memory, which is a reversible operation (the filing can be reloaded). Write · High xbrl_create_instance XBRL instance documents are structured financial filings that encode company facts and metrics.

5 of Arelle's 46 tools can modify, destroy, or commit something on every call — and an agent calls them with no built-in limits.

POLICY

How to control Arelle

PolicyLayer is an MCP gateway — it sits between your AI agents and Arelle, and nothing reaches the server without passing your rules. These are the rules we recommend:

Rate limit write operations

{
  "xbrl_close_filing": {
    "limits": [
      {
        "counter": "xbrl_close_filing_per_hour",
        "window": "hour",
        "max": 30,
        "scope": "grant"
      }
    ]
  }
}

Prevents bulk unintended modifications from agents caught in loops.

Cap read operations

{
  "xbrl_anomaly_detection": {
    "limits": [
      {
        "counter": "xbrl_anomaly_detection_per_minute",
        "window": "minute",
        "max": 60,
        "scope": "grant"
      }
    ]
  }
}

Controls API costs and prevents retry loops from exhausting upstream rate limits.

Create a free account and register Arelle — nothing to install.
Add these rules — paste them, or build them visually. Tune the limits to your setup.
Point your MCP client (Claude, Cursor, anything) at your gateway URL.

ENFORCE POLICY ON ARELLE →

Instant setup, no code required.

FULL CATALOGUE

All 46 Arelle tools

EXECUTE 2 tools

Execute xbrl_run_formula xbrl_run_formula Execute xbrl_validate xbrl_validate

WRITE 3 tools

Write xbrl_close_filing Close a loaded filing and free its memory (30-60MB per filing). Write xbrl_create_instance xbrl_create_instance Write xbrl_export_json xbrl_export_json

READ 41 tools

Read xbrl_anomaly_detection xbrl_anomaly_detection Read xbrl_browse_taxonomy xbrl_browse_taxonomy Read xbrl_calculation_tree xbrl_calculation_tree Read xbrl_check_calculations xbrl_check_calculations Read xbrl_company_facts xbrl_company_facts Read xbrl_compare_filings xbrl_compare_filings Read xbrl_concept_details xbrl_concept_details Read xbrl_dimension_structure xbrl_dimension_structure Read xbrl_dts_comparison xbrl_dts_comparison Read xbrl_edgar_bulk_facts xbrl_edgar_bulk_facts Read xbrl_edgar_company_info Get comprehensive company profile from SEC EDGAR. Read xbrl_edgar_filing_index xbrl_edgar_filing_index Read xbrl_edgar_insider_trades Get insider trading data from SEC Forms 3, 4, 5. Read xbrl_edgar_search xbrl_edgar_search Read xbrl_export_concepts Export taxonomy concepts as structured data. Read xbrl_export_csv Export facts as CSV format for spreadsheet analysis. Read xbrl_export_dts Export the Discoverable Taxonomy Set (DTS) document map. Read xbrl_extract_facts xbrl_extract_facts Read xbrl_extract_text xbrl_extract_text Read xbrl_fact_details xbrl_fact_details Read xbrl_fetch_sec_filing xbrl_fetch_sec_filing Read xbrl_filing_summary xbrl_filing_summary Read xbrl_financial_ratios xbrl_financial_ratios Read xbrl_get_cover_page xbrl_get_cover_page Read xbrl_get_exhibits xbrl_get_exhibits Read xbrl_get_footnotes xbrl_get_footnotes Read xbrl_get_html_tables xbrl_get_html_tables Read xbrl_get_raw_xml xbrl_get_raw_xml Read xbrl_list_filings List all currently loaded filings with their IDs and basic info. Read xbrl_list_formulas List all formulas, assertions, and validation rules in a filing's DTS. Read xbrl_list_sections xbrl_list_sections Read xbrl_load_filing xbrl_load_filing Read xbrl_peer_comparison xbrl_peer_comparison Read xbrl_presentation_tree xbrl_presentation_tree Read xbrl_render_statement xbrl_render_statement Read xbrl_search_sec_concept xbrl_search_sec_concept Read xbrl_search_text xbrl_search_text Read xbrl_segment_breakdown xbrl_segment_breakdown Read xbrl_smart_summary xbrl_smart_summary Read xbrl_trend_analysis xbrl_trend_analysis Read xbrl_validate_extended xbrl_validate_extended

EXPLORE

Related servers

Other MCP servers with similar tools — same risk classification, starter policies for each.

FAQ

Questions about Arelle

How do I prevent bulk modifications through Arelle? +

The Arelle server has 3 write tools including xbrl_close_filing, xbrl_create_instance, xbrl_export_json. Set a rate limit in your policy -- for example, 10 calls per hour prevents an agent from making more than 10 modifications per hour. PolicyLayer enforces this at the gateway, before calls reach Arelle.

How many tools does the Arelle MCP server expose? +

46 tools across 3 categories: Execute, Read, Write. 41 are read-only. 5 can modify, create, or delete data.

How do I enforce a policy on Arelle? +

Register the Arelle MCP server in PolicyLayer, apply the suggested rules above (adjust the limits to your use case), and point your AI client at the PolicyLayer proxy URL instead of the server directly. Your agents keep the same tools; PolicyLayer evaluates every call against policy before it executes. Nothing to install, live in minutes.

Enforce policy on every Arelle tool call.

Deterministic rules across all 46 Arelle tools. Per-identity grants. Full audit log. Live in minutes. Nothing to install.

ENFORCE POLICY ON ARELLE →

Instant setup, no code required.

46 Arelle tools catalogued and risk-classified — across an index of 43,000+ MCP servers.