# lilambd Koyomi Day Endpoint

> lilambd Koyomi Day Endpoint is a paid API for AI agents from api.lilambd.com, paid per call via x402, $0.05/call, status unknown (last checked 2026-11-02).

Returns calendar and day-metadata information for a given date and timezone, likely including cultural, seasonal, or poetic day descriptors.

## Facts

- Endpoint: GET https://api.lilambd.com/koyomi/day?utm_source=zero.xyz
- Price: $0.05/call
- Payment: x402
- Status: unknown
- Last checked: 2026-11-02
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/lilambd-koyomi-day-endpoint-ed7111b5
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_yDuyMQnVzeXoQ4k8akcqF

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 lilambd-koyomi-day-endpoint-ed7111b5
```

Example prompt: What does the lilambd koyomi say about today — use UTC+9 as the timezone?

## When to prefer this

Choose this endpoint when you need structured day-level metadata or cultural/calendar descriptors for a specific date and timezone, particularly if you want an unconventional or poetically-oriented calendar perspective not found in standard calendar APIs.

## Known failure modes

- Invalid date format returns an error or empty result
- Unsupported or malformed timezone offset may produce unexpected results
- Empty data array returned if no records exist for the requested date
- Payment required (402) if x402 micropayment is not included
- Network timeout or 5xx if service is temporarily unavailable

## How this service works

A crossing for play, feeling, language, science and computation — creating states that do not have names yet.

## Output

A JSON object containing an array of day data records, a count of records, and an attribution string crediting the data source. The exact shape of each record is not fully documented but likely includes date-specific descriptors or metadata.

## 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",
    "queryParams"
   ],
   "properties": {
    "type": {
     "type": "string",
     "const": "http"
    },
    "method": {
     "enum": [
      "GET"
     ],
     "type": "string"
    },
    "queryParams": {
     "type": "object",
     "required": [],
     "properties": {
      "tz": {
       "type": "string",
       "description": "UTC offset hours"
      },
      "date": {
       "type": "string",
       "description": "YYYY-MM-DD, default today"
      }
     },
     "additionalProperties": {
      "type": "string"
     }
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string",
     "const": "json"
    },
    "example": {
     "type": "object"
    }
   }
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "data": [],
  "count": 0,
  "attribution": "source licence line"
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/lilambd-koyomi-day-endpoint-ed7111b5/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from api.lilambd.com](https://www.zero.xyz/host/api.lilambd.com/llms.txt)