MCP server

ccpcrate — Canadian CCPC corporate tax Official

ca.ccpcrate/ccpcrate

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

Deterministic Canadian CCPC rate stack: small business deduction and grinds, Part IV, RDTOH.

Website Source

At a glance

Type

MCP server

Publisher

ccpcrate.ca (verified by the MCP Registry)

Status

Working at last check

Tools

4

Token cost

About 7,689 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 ccpcrate https://ccpcrate.ca/mcp

Claude Desktop

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

Codex (config.toml)

[mcp_servers.ccpcrate]
url = "https://ccpcrate.ca/mcp"

Gemini CLI

{"mcpServers":{"ccpcrate":{"httpUrl":"https://ccpcrate.ca/mcp"}}}

Cursor

{"mcpServers":{"ccpcrate":{"url":"https://ccpcrate.ca/mcp"}}}

VS Code

{"servers":{"ccpcrate":{"type":"http","url":"https://ccpcrate.ca/mcp"}}}

Antigravity

agy mcp add ccpcrate https://ccpcrate.ca/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":"ccpcrate","server_url":"https://ccpcrate.ca/mcp","require_approval":"always"}

Grok (xAI API tools)

{"type":"mcp","server_label":"ccpcrate","server_url":"https://ccpcrate.ca/mcp"}

Tools

• ccpcrate_explain ~2246 tokens
  Free diagnostic pass over the same input as ccpcrate_resolve: which layers run, the defaults the engine would apply, every warning with its meaning (grind binding, provincial asymmetries, missing inputs), the rule rows in force for the year with sources and verification status, the open verification
• ccpcrate_group ~2933 tokens
  Compute a whole associated group (s.256) in one call: federal line 417 as the sum of the members' prior-year adjusted investment income, the Schedule 23 allocation of the business limit, and every member's return in payer-before-recipient order so that a connected dividend's Part IV under s.186(1)(b
• ccpcrate_resolve ~2294 tokens
  Compute the federal Part I / Part IV / refundable / RDTOH / dividend-refund lines and the provincial layer for one CCPC and one taxation year. Returns a readable summary plus the structured result: lines (rounded, as printed), unrounded audit values, facts, warnings, layers, balances carried forward
• ccpcrate_rules ~216 tokens
  The statutory rates and parameters the engine uses (14 jurisdictions, effective dates, application modes, sources, verification status), filterable by jurisdiction, key and date. Free.

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