# Saylor Innovations Date Add Calculator

> Saylor Innovations Date Add Calculator is a paid API for AI agents from saylorinnovations.com, paid per call via x402, $0.01/call, status unknown (last checked 2026-10-30).

Adds calendar days or business days to a start date and returns the resulting date and weekday name

## Facts

- Endpoint: GET https://saylorinnovations.com/api/calc/date-add?utm_source=zero.xyz
- Price: $0.01/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-30
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/saylor-innovations-date-add-calculator-86d352cd
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_TJakT_smR6WauF_S3o4RI

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 saylor-innovations-date-add-calculator-86d352cd
```

Example prompt: What date is 10 business days from 2025-06-01, and what day of the week will it land on?

## When to prefer this

Choose this endpoint when you need a quick, reliable date offset calculation — either calendar days or business/weekday days — and want the result weekday returned in the same call. It is ideal for scheduling, deadline computation, and SLA calculations where weekend-skipping matters. Prefer it over manual date math or general-purpose date libraries when you need a hosted, pay-per-use API with no setup.

## Known failure modes

- Missing required 'from' query parameter returns an error
- Invalid date format (not YYYY-MM-DD) may return a parsing error
- Non-numeric or malformed days/business_days values cause request failure
- Extremely large offsets may produce unexpected or out-of-range dates
- Network or payment (x402) failure prevents response

## How this service works

Add days or business days to a date - calendar or weekday offset from a start date, returns the resulting date and weekday

## Output

A JSON object containing the original start date, the computed result date (YYYY-MM-DD), the result weekday name, the number of calendar days added, the number of business days added, an optional note with caveats, and the UTC timestamp when the check was run.

## 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": [
      "from"
     ],
     "properties": {
      "from": {
       "type": "string",
       "description": "Start date YYYY-MM-DD"
      },
      "business_days": {
       "type": "string",
       "description": "optional weekdays to add (negative to subtract)"
      }
     }
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string",
     "const": "json"
    },
    "example": {
     "type": "object",
     "required": [
      "from",
      "result"
     ],
     "properties": {
      "days": {
       "type": "number",
       "description": "Number of days"
      },
      "from": {
       "type": "string",
       "description": "Start of the range"
      },
      "note": {
       "type": [
        "string",
        "null"
       ],
       "description": "Caveat or context for reading the result"
      },
      "result": {
       "type": "string",
       "description": "Result of the operation"
      },
      "checked_at": {
       "type": [
        "string",
        "null"
       ],
       "description": "Time the check was run (UTC)"
      },
      "business_days": {
       "type": "number",
       "description": "Number of business days"
      },
      "result_weekday": {
       "type": "string",
       "description": "Result weekday"
      }
     }
    }
   }
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/saylor-innovations-date-add-calculator-86d352cd/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from saylorinnovations.com](https://www.zero.xyz/host/saylorinnovations.com/llms.txt)