io.github.Nero-Engine/us-sales-tax-nexus
US Sales Tax Economic Nexus Check
Which US states must a remote seller register in for sales tax? Every state's nexus rule. Sourced.
alive probed 2026-10-11 · HTTP 200
4tools
1.3ktokens in Claude Opus 5.5
1.3ktokens in Claude Code
0.6 %of a 200k context window
738o200k_base estimate
477 msto initialize
467 msto list tools
- Endpoint
- https://us-sales-tax-nexus.nerolabs.workers.dev/mcp (streamable-http)
- Host
- us-sales-tax-nexus.nerolabs.workers.dev
- Protocol
- 2025-06-18
- Reports itself as
- nerolabs-us-sales-tax-nexus 1.0.0
- Capabilities
- tools
- Instructions
- 576 characters
- Claude count
- Claude Opus 5.5, measured 2026-10-11. Counted again when the tool definitions change. Method.
- Website
- https://us-sales-tax-nexus.nerolabs.workers.dev/
- Registry
- active, updated 2026-10-10 · registry entry
- Reachable
- 1 of the last 1 probe
Most expensive tools
| Tool | Tokens (o200k) | Share of this server |
|---|---|---|
| check_economic_nexus | 445 | 60 % |
| list_nexus_thresholds | 122 | 17 % |
| list_upcoming_nexus_changes | 108 | 15 % |
| list_capabilities | 63 | 9 % |
Badge and feed
[](https://mcpcost.ulehla.dev/s/io.github.Nero-Engine/us-sales-tax-nexus)
An entry for every probe that changed the result, the tool count or the token cost: Atom feed. Add it to a feed reader or a Slack RSS app to hear when the server stops answering or its tool set grows.