# Dayze Day & Date Calculator API

> Dayze Day & Date Calculator API is a paid API for AI agents from dayze.com, paid per call via x402, $0.005/call, status unknown (last checked 2026-09-14).

Calculates how many days a person has lived and returns their current age and sequential day number from a given birthdate

## Facts

- Endpoint: GET https://dayze.com/api/v1/days
- Price: $0.005/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-14
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/dayze-day-date-calculator-api-bf9e7c89
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_rFNExqFtSxhL7khl3ojzB

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 dayze-day-date-calculator-api-bf9e7c89
```

Example prompt: How many days have I been alive? My birthday is March 15, 1988 — I want to know my total day count and my age using Dayze.

## When to prefer this

Choose this endpoint when you need a quick, lightweight computation of how many days a person has been alive given a birthdate, especially when you also want their age in years returned in one call. It is ideal for personalisation use cases (birthday cards, life milestone apps) or curiosity queries about day counts. Prefer it over general-purpose date-diff libraries when you want a hosted API response without local computation.

## Known failure modes

- Missing or malformed birthdate parameter may return an error or unexpected result
- Future birthdates could return zero or negative day counts
- Date format mismatches may cause parsing errors
- No schema documentation for required query parameter names, so parameter naming may need trial-and-error

## How this service works

Count how many days you have lived, use our free day and date calculator between any two dates, and build your life timeline. Personal CRM on Dayze.

## Output

Returns a JSON object containing the person's age in years (integer), their sequential life day number (integer, e.g. 13339), and a powered_by attribution string. The day_number represents the total number of days elapsed since the provided birthdate.

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "age": 36,
  "day_number": 13339,
  "powered_by": "dayze.com"
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/dayze-day-date-calculator-api-bf9e7c89/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from dayze.com](https://www.zero.xyz/host/dayze.com/llms.txt)