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Model Context Protocol

Belastbaar MCP

Dutch tax data and tools inside your AI workflow

A hosted MCP endpoint that makes Dutch tax data usable in Cursor, Claude Code, and your own apps — fast to connect, safe by default, and built for reliable outputs.

https://belastbaar.com/api/mcp Read-only by default Streamable HTTP

Connect in minutes

Choose your client: one-click Cursor install, Claude Code CLI, or the MCP SDK.

Cursor

Use the one-click deeplink or paste the config into your mcp.json.

Tip: keep headers empty unless you know you need auth. Public tools/resources work without tokens.

Config (copy/paste)

{
  "mcpServers": {
    "Belastbaar MCP": {
      "type": "streamable-http",
      "url": "https://belastbaar.com/api/mcp",
      "headers": {}
    }
  }
}

Tip: keep headers empty unless you know you need auth. Public tools/resources work without tokens.

Built for practical outcomes

Belastbaar MCP is useful when you need correct, year-specific Dutch tax context — without building a tax knowledge layer from scratch.

AI assistants that don’t hallucinate rates

Expose tax brackets, credits, and allowances as structured resources and tools so your assistant can answer with real data.

Developer workflows in Cursor & Claude Code

Ask tax questions while coding, generate explanations, or validate assumptions with tools like get_tax_rate and search_knowledge.

Safe defaults for production-like usage

Read-only annotations, predictable JSON outputs, and optional OAuth for account-scoped tools.

Example prompts

Try these after connecting the server. They’re designed to trigger resources and tools reliably.

https://belastbaar.com/api/mcp
- What are the 2025 income tax brackets in the Netherlands?
- Call get_tax_rate for €50,000 income in 2025 and explain which bracket applies.
- Search the knowledge base for ‘zorgtoeslag’ and summarize the key eligibility rules.

What is MCP?

Model Context Protocol (MCP) is an open standard that lets AI tools discover and call external tools and resources in a consistent way.

  • Resources expose read-only data via URIs (e.g. tax://YEAR/overview)
  • Tools expose callable functions (e.g. get_tax_rate)
  • Clients can discover capabilities automatically
  • OAuth can be used for account-scoped tools (optional)
Belastbaar MCP endpoint
https://belastbaar.com/api/mcp
tax://YEAR/*
knowledge://*
get_tax_rate / search_knowledge / compare_tax_years
OAuth-ready (optional)

What you get

A hosted MCP endpoint, built for reliable integrations.

Hosted endpoint

Connect to https://belastbaar.com/api/mcp using Streamable HTTP.

Tax resources

Read tax data via tax://YEAR/* and knowledge via knowledge://*.

Useful tools

get_tax_rate, compare_tax_years, search_knowledge — plus optional account tools.

Safe defaults

Read-only hints, no destructive tools, and OAuth-ready auth hints for account features.

FAQ

Quick answers for a smooth integration.

Use https://belastbaar.com/api/mcp. It supports Streamable HTTP.
No for public tax resources and tools. Some account-scoped tools require authentication.
Cursor supports Streamable HTTP and one-click installs. Claude Code supports remote HTTP MCP servers via its CLI.
Tax resources (tax://YEAR/*), knowledge resources (knowledge://*), and tools like get_tax_rate, compare_tax_years, and search_knowledge.
Account tools return an MCP auth hint when unauthenticated and can be used with OAuth flows supported by compatible clients.

Ready to build?

Start with the hosted endpoint, then explore partnerships if you need higher-volume or custom integrations.

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Belastbaar provides educational information about Dutch taxes. For official advice, always consult a qualified tax professional or the Dutch Tax Authority.

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