# ArgonautWorks Schedule Fit API

> ArgonautWorks Schedule Fit API is a paid API for AI agents from argonaut-schedule-fit.vercel.app, paid per call via x402, $0.001/call, status unknown (last checked 2026-09-14).

Calculates DST-aware overlapping business hours across 2–8 IANA time zones, returning feasible meeting windows in UTC.

## Facts

- Endpoint: POST https://argonaut-schedule-fit.vercel.app/api/v1/overlap
- Price: $0.001/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-14
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/argonautworks-schedule-fit-api-dc4d86df
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_3ji0JTr9ZVDSWgmD6nobR

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 argonautworks-schedule-fit-api-dc4d86df -d '<json body>'
```

Example prompt: Can you check if there's any overlapping business hours between teams in New York (America/New_York), London (Europe/London), and Tokyo (Asia/Tokyo) on August 4, 2026?

## When to prefer this

Use this endpoint when you need a precise, DST-aware calculation of shared business hour windows across multiple international time zones — especially when daylight saving transitions could shift overlap windows. Prefer this over generic calendar APIs when you need a deterministic UTC result without requiring calendar account access or authentication.

## Known failure modes

- Invalid or unrecognized IANA time zone string returns an error
- Fewer than 2 or more than 8 time zones specified causes a validation error
- No business hour overlap found returns feasible: false with null or empty overlap window
- Malformed date input causes a parsing error
- Missing required fields returns a 400-level error

## How this service works

DST-aware overlap calculation for shared business hours across 2 to 8 IANA time zones.

## Output

Returns a JSON object indicating whether a feasible overlap exists (feasible: true/false), the UTC start and end timestamps of the overlapping window, total available minutes, and the count of non-overlapping slots across the queried time zones.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "$schema": "https://json-schema.org/draft/2020-12/schema",
 "required": [
  "input"
 ],
 "properties": {
  "input": {
   "type": "object",
   "required": [
    "type",
    "method",
    "bodyType",
    "body"
   ],
   "properties": {
    "body": {
     "required": [
      "zones",
      "date"
     ],
     "properties": {
      "date": {
       "type": "string",
       "pattern": "^\\d{4}-\\d{2}-\\d{2}$"
      },
      "zones": {
       "type": "string",
       "description": "Two to eight comma-separated IANA time zones."
      },
      "work_end": {
       "type": "string",
       "default": "17:00",
       "pattern": "^\\d{2}:\\d{2}$"
      },
      "work_start": {
       "type": "string",
       "default": "09:00",
       "pattern": "^\\d{2}:\\d{2}$"
      },
      "duration_minutes": {
       "type": "integer",
       "default": 30,
       "maximum": 1440,
       "minimum": 1
      }
     }
    },
    "type": {
     "type": "string",
     "const": "http"
    },
    "method": {
     "enum": [
      "POST"
     ],
     "type": "string"
    },
    "bodyType": {
     "enum": [
      "json",
      "form-data",
      "text"
     ],
     "type": "string"
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": "object"
    }
   }
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "overlap": {
   "end_utc": "2026-08-04T15:00:00.000Z",
   "start_utc": "2026-08-04T13:00:00.000Z"
  },
  "feasible": true,
  "available_minutes": 120,
  "non_overlapping_slot_count": 4
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/argonautworks-schedule-fit-api-dc4d86df/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from argonaut-schedule-fit.vercel.app](https://www.zero.xyz/host/argonaut-schedule-fit.vercel.app/llms.txt)