io.github.Nero-Engine/us-sales-tax-nexus · v1.0.0 · sales-and-crm
US Sales Tax Economic Nexus Check is healthy: it completed an MCP handshake in 431 ms and exposes 4 tools.
Which US states must a remote seller register in for sales tax? Every state's nexus rule. Sourced.
Endpoint: https://us-sales-tax-nexus.nerolabs.workers.dev/mcp (streamable-http)
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| Users (last 30 days) | 0 |
| Handshake | Healthy |
| Auth needed | None |
| Tool count | 4 |
| Latency | 431 ms |
| Last checked (UTC) | 2026-10-16T05:40:08.170Z |
| Checked (UTC) | Status | Latency | Error |
|---|---|---|---|
| 2026-10-16T05:40:08.170Z | Healthy | 431 | |
| 2026-10-15T02:05:33.557Z | Healthy | 1247 |
list_capabilities | 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. |
check_economic_nexus | 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 sal |
list_nexus_thresholds | 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_changes | 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. |