# Calendar Systems – Chinese Zodiac Lookup

> Calendar Systems – Chinese Zodiac Lookup is a paid API for AI agents from calendar-systems.x402tookit.com, paid per call via x402, $0.02/call, status unknown (last checked 2026-10-30).

Returns the Chinese zodiac animal, element, yin/yang polarity, sexagenary cycle info, and Chinese New Year date for a given Gregorian year or date (table coverage 1901–2100).

## Facts

- Endpoint: GET https://calendar-systems.x402tookit.com/chinese-zodiac?utm_source=zero.xyz
- Price: $0.02/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-30
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/calendar-systems-chinese-zodiac-lookup-afe6e7a2
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_UTWtp2VBX-CPpdz-7bW2U

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 calendar-systems-chinese-zodiac-lookup-afe6e7a2
```

Example prompt: What Chinese zodiac animal, element, and yin/yang polarity does the year 1989 fall under, and when was Chinese New Year that year?

## When to prefer this

Use this endpoint when you need authoritative Chinese zodiac metadata — animal, element, polarity, sexagenary cycle — for a specific Gregorian year or date, especially when you also need the precise Chinese New Year date. It covers the 1901–2100 range with a lookup table for New Year dates, making it more accurate than algorithmic approximations for that window.

## Known failure modes

- Year or date outside supported range (1901–2100 for table-based New Year data) may return degraded or partial results
- Invalid date format (non-YYYY-MM-DD) will cause a parameter error
- Very large year values (beyond 9999) may not be supported for year-based lookups
- Both year and date omitted may return an error or default response

## How this service works

Chinese zodiac animal, element, yin/yang and Chinese New Year date for a year or a date (New Year table 1901-2100).

## Output

Returns a JSON object with the zodiac animal, five-element association, yin/yang polarity, heavenly stem, earthly branch, sexagenary cycle year number, Chinese New Year date and weekday, next Chinese New Year date, a human-readable summary, and metadata like table coverage and whether a date parameter was 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": [],
     "properties": {
      "date": {
       "type": "string",
       "description": "YYYY-MM-DD, 1901 to 2100: finds the zodiac year the date falls in"
      },
      "year": {
       "type": "integer",
       "description": "Lunar year number (the Gregorian year it starts in), 1 to 9999"
      }
     }
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": "object",
     "properties": {
      "asOf": {
       "type": [
        "null",
        "string"
       ]
      },
      "stem": {
       "type": [
        "null",
        "string"
       ]
      },
      "animal": {
       "type": [
        "null",
        "string"
       ]
      },
      "branch": {
       "type": [
        "null",
        "string"
       ]
      },
      "source": {
       "type": [
        "null",
        "string"
       ]
      },
      "element": {
       "type": [
        "null",
        "string"
       ]
      },
      "reasons": {
       "type": [
        "array",
        "null"
       ],
       "items": {
        "type": "string"
       }
      },
      "summary": {
       "type": [
        "null",
        "string"
       ]
      },
      "verdict": {
       "type": [
        "null",
        "string"
       ]
      },
      "degraded": {
       "type": [
        "boolean",
        "null"
       ]
      },
      "polarity": {
       "type": [
        "null",
        "string"
       ]
      },
      "usedDate": {
       "type": [
        "boolean",
        "null"
       ]
      },
      "disclaimer": {
       "type": [
        "null",
        "string"
       ]
      },
      "notChecked": {
       "type": [
        "array",
        "null"
       ],
       "items": {
        "type": "string"
       }
      },
      "sexagenary": {
       "type": [
        "null",
        "string"
       ]
      },
      "zodiacYear": {
       "type": [
        "null",
        "number"
       ]
      },
      "tabl
… (truncated)
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/calendar-systems-chinese-zodiac-lookup-afe6e7a2/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from calendar-systems.x402tookit.com](https://www.zero.xyz/host/calendar-systems.x402tookit.com/llms.txt)