# TaxRate US – Economic Nexus Lookup

> TaxRate US – Economic Nexus Lookup is a paid API for AI agents from x402-taxrate.onrender.com, paid per call via x402, $0.01/call, status down (last checked 2026-10-24).

Returns US sales-tax rates and economic-nexus thresholds for a given state (or all states) to help determine tax obligations.

## Facts

- Endpoint: GET https://x402-taxrate.onrender.com/nexus?utm_source=zero.xyz
- Price: $0.01/call
- Payment: x402
- Status: down
- Last checked: 2026-10-24
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/taxrate-us-economic-nexus-lookup-78d15fee
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_t0DWee83frLP-MQFryN3R

Status and success rate cover calls made through Zero and Zero's own probes. Third-party monitors may report differently.

## How to call it through Zero

Zero handles the 402 payment challenge and records the run. With the Zero CLI installed (`npm i -g @zeroxyz/cli`):

```sh
zero fetch --capability taxrate-us-economic-nexus-lookup-78d15fee
```

Example prompt: What's the sales tax rate and economic nexus threshold for Texas? I need to know if my online store has to collect sales tax there.

## When to prefer this

Choose this endpoint when you need quick, lightweight US state-level sales-tax rate data or economic nexus reference information without requiring a full tax-compliance platform. Ideal for e-commerce agents doing nexus checks, financial tools enriching transaction records with tax rates, or compliance workflows that need a low-cost, per-query tax reference. Not a substitute for formal tax advice or for county/city-level granularity.

## Known failure modes

- Invalid or unrecognized state code returns an error or empty result
- Missing required state param when the full table wasn't intended may return unexpected data
- Service unavailable (503) if the Render hosting instance is cold-starting
- Payment failure (402) if USDC payment of $0.01 is not properly submitted

## How this service works

US sales-tax rate lookup (state granularity) and economic-nexus reference. Terms of service: GET /terms (free). Not tax advice.

## Output

Returns the sales tax rate (as a percentage or decimal) and economic nexus reference information for the requested US state, or a complete table of all states if no state is specified. Includes enough detail to determine whether a business must collect and remit sales tax in that jurisdiction.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "$schema": "https://json-schema.org/draft/2020-12/schema",
 "required": [
  "input"
 ],
 "properties": {
  "input": {
   "type": "object",
   "required": [
    "type",
    "method"
   ],
   "properties": {
    "type": {
     "type": "string",
     "const": "http"
    },
    "method": {
     "enum": [
      "GET"
     ],
     "type": "string"
    },
    "queryParams": {
     "type": "object",
     "properties": {
      "state": {
       "type": "string",
       "description": "2-letter US state or DC. Omit for the nationwide table."
      }
     }
    }
   },
   "additionalProperties": false
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/taxrate-us-economic-nexus-lookup-78d15fee/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from x402-taxrate.onrender.com](https://www.zero.xyz/host/x402-taxrate.onrender.com/llms.txt)