# usaref Mexico IVA Standard Rate

> usaref Mexico IVA Standard Rate is a paid API for AI agents from usaref.dev, paid per call via x402, $0.1/call, status unknown (last checked 2026-10-20).

Returns the current Mexican IVA (VAT) standard rate as gazette-cited JSON, including last_confirmed timestamp and staleness flag.

## Facts

- Endpoint: GET https://usaref.dev/v1/certified/:country/:series?utm_source=zero.xyz
- Price: $0.1/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-20
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/usaref-mexico-iva-standard-rate-bb8a1c62
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_H1aDAjQlmoUc6X3trH_AK

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 usaref-mexico-iva-standard-rate-bb8a1c62
```

Example prompt: What is the current official IVA standard rate in Mexico? I need the gazette-cited value including when it was last confirmed and whether the data is still fresh.

## When to prefer this

Use this endpoint when you need an authoritative, gazette-cited IVA standard rate for Mexico with explicit freshness metadata (last_confirmed + stale flag), rather than relying on scraped or crowdsourced tax databases. Ideal for compliance workflows, invoice generation, or tax table synchronization where a citable government source is required.

## Known failure modes

- Invalid country code returns a 404 or error response
- Invalid or unrecognized series ID returns a 404 not found
- Rate data is stale (stale: true) meaning the value has not been recently confirmed against the gazette
- Payment not provided or invalid results in a 402 Payment Required response
- Network timeout if the service is temporarily unavailable

## How this service works

Mexico: IVA standard rate — gazette-cited JSON with last_confirmed and stale.

## Output

A JSON object containing the current Mexican IVA standard rate value, the gazette citation used as the authoritative source, a last_confirmed timestamp indicating when the rate was verified, and a stale boolean flag indicating whether the data may be outdated.

## 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": {},
     "additionalProperties": false
    }
   },
   "additionalProperties": false
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/usaref-mexico-iva-standard-rate-bb8a1c62/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from usaref.dev](https://www.zero.xyz/host/usaref.dev/llms.txt)