MCP server

Arc & Ledger Tax Reference

com.arcandledger/tax-tools

Checked 26 Oct 2026, 08:29 UTC · Connected to it and listed its tools

Read-only US tax reference for notices, deadlines, filing screens, and clearly labeled estimates.

Website Source

At a glance

Type

MCP server

Publisher

arcandledger.com (verified by the MCP Registry)

Status

Working at last check

Tools

13

Token cost

About 5,198 tokens per request

Sets up in

Claude Code, Claude Desktop, Codex, Gemini CLI, Cursor, VS Code, Antigravity, ChatGPT, OpenAI API, Grok

Last checked

26 Oct 2026, 08:29 UTC

Connect it to your agent

Add to CursorAdd to VS CodeVS Code Insiders

Opens the app, which shows the server and asks you to confirm. For other apps, copy the setup below.

Claude Code

claude mcp add --transport http tax-tools https://mcp.arcandledger.com/directory/mcp

Claude Desktop

Settings → Connectors → Add custom connector, and paste the URL.

Codex (config.toml)

[mcp_servers.tax-tools]
url = "https://mcp.arcandledger.com/directory/mcp"

Gemini CLI

{"mcpServers":{"tax-tools":{"httpUrl":"https://mcp.arcandledger.com/directory/mcp"}}}

Cursor

{"mcpServers":{"tax-tools":{"url":"https://mcp.arcandledger.com/directory/mcp"}}}

VS Code

{"servers":{"tax-tools":{"type":"http","url":"https://mcp.arcandledger.com/directory/mcp"}}}

Antigravity

agy mcp add tax-tools https://mcp.arcandledger.com/directory/mcp

ChatGPT

Settings → Apps & Connectors → Advanced settings: turn on Developer mode, then Create a connector and paste the URL. Which plans can do this varies.

OpenAI API (Responses tools)

{"type":"mcp","server_label":"tax-tools","server_url":"https://mcp.arcandledger.com/directory/mcp","require_approval":"always"}

Grok (xAI API tools)

{"type":"mcp","server_label":"tax-tools","server_url":"https://mcp.arcandledger.com/directory/mcp"}

Tools

• check_5472_obligation ~469 tokens
  Use to screen common Form 5472 triggers for a foreign-owned US disregarded entity or corporation. The result is a general filing screen and does not prepare or file the form.
• check_fbar_fatca ~315 tokens
  Use to screen general FBAR and Form 8938 thresholds from aggregate balance, filing status, residence, and account-count facts. Do not request account numbers, institution names, or statements.
• check_itin_eligibility ~371 tokens
  Use to screen general ITIN reason categories, whether a return is commonly attached, and supporting-document requirements. Never request or process an actual ITIN, passport, or identity document.
• check_resolution_options ~650 tokens
  Use to screen general IRS payment and collection alternatives from a rough balance, filing-compliance status, ability-to-pay category, and coarse tax-account type when known. This is an educational fit screen, not a promise that the IRS will approve an option.
• check_treaty_withholding ~389 tokens
  Use to explain general US withholding rules, documentation, and supported US-Turkey treaty rates for a payment category. Treaty eligibility and source rules depend on the full facts.
• deadline_calendar ~434 tokens
  Use to return common federal filing and payment dates for a selected filer or entity type. The user must verify the date for weekends, holidays, extensions, fiscal years, and special facts.
• decode_irs_notice ~291 tokens
  Use when a user provides the code from an IRS notice or letter and wants a general explanation, the usual response window, or the next procedural step. Do not request the notice itself or any taxpayer identifier.
• estimate_accountable_plan ~481 tokens
  Use to estimate potentially reimbursable business expenses under an accountable-plan scenario, including the split 2026 business-mileage rates. The result does not establish a plan or determine substantiation.
• estimate_augusta_rule ~345 tokens
  Use to screen the fewer-than-15-days home-rental rule under IRC 280A(g) and calculate conditional amounts. Keep the owner-side income exclusion separate from the business-side requirements for ordinary and necessary use and reasonable rent.
• estimate_irs_penalty ~243 tokens
  Use to estimate selected federal failure-to-file, failure-to-pay, and underpayment amounts from nonidentifying figures. The result is an estimate and does not replace an IRS account transcript.
• estimate_quarterly_taxes ~426 tokens
  Use to estimate federal quarterly tax payments from nonidentifying income, entity, withholding, and prior-year tax figures. Return the assumptions, safe-harbor context, and due dates.
• estimate_rental_income ~579 tokens
  Use to estimate a basic rental-income result from nonidentifying figures and identify the modeled depreciation, passive-loss, and personal-use limitations.
• explain_tax_document ~205 tokens
  Use when a user names a US tax form or information document and wants to understand its purpose, common fields, or usual return treatment. Do not request or accept the document itself.

Browse

• Payments

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