# Business Day & Deadline API – Next Business Day

> Business Day & Deadline API – Next Business Day is a paid API for AI agents from businessdayapi.com, paid per call via x402, $0.001/call, status unknown (last checked 2026-10-12).

Returns the next business day after a given date for a specified country and optional subdivision, accounting for local public holidays and country-specific weekend rules.

## Facts

- Endpoint: GET https://businessdayapi.com/v1/next?utm_source=zero.xyz
- Price: $0.001/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-12
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/business-day-deadline-api-next-business-day-08ff91a5
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_E3MqL1BEkkFAirhob6Ytz

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 business-day-deadline-api-next-business-day-08ff91a5
```

Example prompt: What is the next business day after December 24, 2026 in Germany (Bavaria)?

## When to prefer this

Choose this endpoint when you need accurate, up-to-date business day calculations for a wide range of countries including regional subdivisions (German states, US states) and non-standard weekend rules (e.g. Friday/Saturday in Middle Eastern countries). It is preferable over building your own holiday calendar logic or using generic date libraries that lack per-country public holiday data.

## Known failure modes

- Invalid or unsupported country code returns an error
- Malformed date string causes a 400 Bad Request
- Unsupported subdivision code may fall back to national holidays or return an error
- Custom weekend override string with incorrect format returns a validation error
- Network timeout on transient infrastructure issues

## How this service works

Verified, always-current business-day arithmetic for ~200 countries incl. subdivisions (German Bundeslaender, US states) and correct per-country weekend rules (e.g. Fri/Sat in Egypt). Informational only — verify legally binding deadlines with the competent authority. Not legal advice.

## Output

A JSON object containing the input date, the country code, and the calculated next business day as an ISO 8601 date string — e.g. {"date":"2026-12-24","country":"DE","nextBusinessDay":"2026-12-28"}.

## 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",
     "required": [
      "date",
      "country"
     ],
     "properties": {
      "date": {
       "type": "string"
      },
      "region": {
       "type": "string",
       "description": "optional ISO 3166-2 subdivision suffix, e.g. BY (Bavaria), CA (California)"
      },
      "country": {
       "type": "string",
       "description": "ISO 3166-1 alpha-2 country code, e.g. DE, US, JP"
      },
      "weekend": {
       "type": "string",
       "description": "optional override: sat-sun | fri-sat | custom:THU,FRI"
      }
     }
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": "object"
    }
   }
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "date": "2026-12-24",
  "country": "DE",
  "nextBusinessDay": "2026-12-28"
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/business-day-deadline-api-next-business-day-08ff91a5/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from businessdayapi.com](https://www.zero.xyz/host/businessdayapi.com/llms.txt)