US Sales Tax Economic Nexus Check MCP Server

Install US Sales Tax Economic Nexus Check MCP server

claude mcp add --transport http us-sales-tax-nexus https://us-sales-tax-nexus.nerolabs.workers.dev/mcp

{
  "mcpServers": {
    "us-sales-tax-nexus": {
      "url": "https://us-sales-tax-nexus.nerolabs.workers.dev/mcp"
    }
  }
}

{
  "mcpServers": {
    "us-sales-tax-nexus": {
      "command": "npx",
      "args": [
        "-y",
        "mcp-remote",
        "https://us-sales-tax-nexus.nerolabs.workers.dev/mcp"
      ]
    }
  }
}

{
  "servers": {
    "us-sales-tax-nexus": {
      "type": "http",
      "url": "https://us-sales-tax-nexus.nerolabs.workers.dev/mcp"
    }
  }
}

{
  "mcpServers": {
    "us-sales-tax-nexus": {
      "serverUrl": "https://us-sales-tax-nexus.nerolabs.workers.dev/mcp"
    }
  }
}

Context tax

Connecting this server adds ~861 tokens of tool definitions to every model turn (lean, 4 tools). Measured 2026-10-19 via its hosted endpoint; o200k tokenizer, worst case for clients that load all tools up front. How we measure

Input prices as of 2026-10-06. Excludes your own prompt and output.

Tools (4)

• check_economic_nexus445 tok

  Checks which US states a remote seller (no office, staff or stock in the state) must register in to collect sales tax, from its sales into each state. Give sales_by_state with the dollar sales and number of transactions (orders) per state, the period those figures cover, and whether they include sales made through marketplaces such as Amazon or Etsy. Returns states where the seller is over the economic nexus threshold (must register), states close to it (80 percent or more), states under it, and for each the threshold, the measurement period the state uses, what sales count (gross, retail or t

• list_nexus_thresholds122 tok

  Lists the economic nexus threshold of every US sales tax state (or one state) on a date: dollar and transaction thresholds, and/or logic, measurement period, what counts, marketplace rules, when to register and the official source. Also lists the states with no statewide sales tax. Free.

• list_upcoming_nexus_changes108 tok

  Lists economic nexus threshold changes in a date window (for example states dropping the 200 transaction test), soonest first, with the old and new rule and source. Use a past from_date to see recent changes. Free.

• list_capabilities63 tok

  Lists coverage (45 sales tax states plus DC, and the 5 states with no statewide sales tax), the date the data was last checked, and related Nero Labs Rules servers. Free.

Freshness

Active — last maintenance signal 8d ago. The newest of the signals below sets the band.

1. Last commit (default branch)

   no data · GitHub

2. Latest release

   no data · GitHub

3. Package published

   no data · npm/PyPI

4. Registry entry updated

   2026-10-10 · 8d ago · official registry · v1.0.0