# Life Dates & Milestones – Round-Number Days Alive

> Life Dates & Milestones – Round-Number Days Alive is a paid API for AI agents from life-dates.x402tookit.com, paid per call via x402, $0.02/call, status unknown (last checked 2026-10-29).

Given a birth date, returns the calendar dates, weekdays, and ages for milestone day-counts alive (e.g. 1,000, 5,000, 10,000, 25,000 days), plus current days-alive count.

## Facts

- Endpoint: GET https://life-dates.x402tookit.com/milestone-dates?utm_source=zero.xyz
- Price: $0.02/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-29
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/life-dates-milestones-round-number-days-alive-5163f5a4
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_Hf8aM66LyL8ETBVhUWTbp

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 life-dates-milestones-round-number-days-alive-5163f5a4
```

Example prompt: I was born on March 14, 1990 — can you tell me the exact dates when I hit my major day-alive milestones like 5,000, 10,000, 15,000, and 25,000 days, including what day of the week each falls on and how old I'll be?

## When to prefer this

Choose this endpoint when you need to compute the calendar dates of specific round-number day-alive milestones for a person given their birth date. It is ideal for personal milestone celebration planning, age-in-days analytics, or curiosity about life day counts. Prefer it over generic date-difference calculators when you want pre-defined milestone sets with weekday and age annotations in a single call.

## Known failure modes

- Missing or invalid birthDate parameter returns an error
- birthDate in incorrect format (not YYYY-MM-DD) causes parse failure
- Invalid 'days' values (non-numeric, more than 20 entries) may be rejected
- Future birth dates may return unexpected results
- Network or payment (x402) failure results in no response

## How this service works

Dates of round-number days alive (1,000, 5,000, 10,000, 25,000 and your own), with weekday and age on that day.

## Output

Returns an array of milestone objects, each with the target day count, the corresponding calendar date (YYYY-MM-DD), weekday name, age in years at that date, days from today (negative if past), and a status label (past/future). Also includes the birth date confirmed, total days alive today, and the reference date used.

## 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": [
      "birthDate"
     ],
     "properties": {
      "days": {
       "type": "string",
       "description": "Comma-separated day counts, up to 20 (default 1000,5000,10000,15000,20000,25000,30000)"
      },
      "from": {
       "type": "string",
       "description": "Date used to mark past or future, YYYY-MM-DD (default today, UTC)"
      },
      "birthDate": {
       "type": "string",
       "description": "Birth date, YYYY-MM-DD"
      }
     }
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": "object",
     "properties": {
      "asOf": {
       "type": [
        "null",
        "string"
       ]
      },
      "source": {
       "type": [
        "null",
        "string"
       ]
      },
      "reasons": {
       "type": [
        "array",
        "null"
       ],
       "items": {
        "type": "string"
       }
      },
      "summary": {
       "type": [
        "null",
        "string"
       ]
      },
      "verdict": {
       "type": [
        "null",
        "string"
       ]
      },
      "degraded": {
       "type": [
        "boolean",
        "null"
       ]
      },
      "birthDate": {
       "type": [
        "null",
        "string"
       ]
      },
      "disclaimer": {
       "type": [
        "null",
        "string"
       ]
      },
      "milestones": {
       "type": [
        "array",
        "null"
       ],
       "items": {
        "type": "object",
        "properties": {
         "day": {
          "type": [
           "null",
           "number"
          ]
         },
         "date": {
          "type": [
           "null",
           "string"
          ]
         },
         "status": {
          "type": [
           "null",
           "string"
          ]
         },
         "weekday": {
          "type": [
           "null",
           "string"
          ]
         },
         "ageYears": {
          "type": [
           
… (truncated)
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/life-dates-milestones-round-number-days-alive-5163f5a4/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from life-dates.x402tookit.com](https://www.zero.xyz/host/life-dates.x402tookit.com/llms.txt)