MCP server

Pass-through tax rules

app.vercel.pass-through-tax-rules/pass-through-tax-rules

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

Cited, tax-year-dated rules for state PTET, the federal SALT cap, and bonus-depreciation conformity.

Website

At a glance

Type

MCP server

Publisher

Not verified

Status

Working at last check

Tools

4

Token cost

About 752 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 pass-through-tax-rules https://pass-through-tax-rules.vercel.app/api/mcp

Claude Desktop

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

Codex (config.toml)

[mcp_servers.pass-through-tax-rules]
url = "https://pass-through-tax-rules.vercel.app/api/mcp"

Gemini CLI

{"mcpServers":{"pass-through-tax-rules":{"httpUrl":"https://pass-through-tax-rules.vercel.app/api/mcp"}}}

Cursor

{"mcpServers":{"pass-through-tax-rules":{"url":"https://pass-through-tax-rules.vercel.app/api/mcp"}}}

VS Code

{"servers":{"pass-through-tax-rules":{"type":"http","url":"https://pass-through-tax-rules.vercel.app/api/mcp"}}}

Antigravity

agy mcp add pass-through-tax-rules https://pass-through-tax-rules.vercel.app/api/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":"pass-through-tax-rules","server_url":"https://pass-through-tax-rules.vercel.app/api/mcp","require_approval":"always"}

Grok (xAI API tools)

{"type":"mcp","server_label":"pass-through-tax-rules","server_url":"https://pass-through-tax-rules.vercel.app/api/mcp"}

Tools

• bonus_conformity ~185 tokens
  Whether a state conforms to IRC 168(k) bonus depreciation and IRC 179 for a tax year, its IRC conformity date, and the add-back or subtraction in plain terms. Unverified fields are null. Unknown states and years are not_covered.
• coverage ~100 tokens
  List jurisdictions and tax years in this dataset. elective_ptet_2026 counts only 2026 files with an elective PTET. no_elective_ptet_2026 and not_effective_2026 are separate and are not PTET states for 2026.
• ptet_rules ~184 tokens
  Elective pass-through entity tax for one state and tax year: eligibility, who elects, deadline, rate, owner credit or exclusion, estimates, and sunset. Returns not_covered when this server has no file. Informational, not tax advice.
• salt_cap ~283 tokens
  Compute the federal SALT deduction cap under 26 USC 164(b)(6) and (b)(7) for a tax year, filing status, and modified adjusted gross income. Returns the cap and the steps, not the deduction. Years before 2018 are not_covered. MAGI is used to compute and is not written to the usage log.

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