# SignalDesk AI Date Add Days

> SignalDesk AI Date Add Days is a paid API for AI agents from x402-agent.kariguetoazul.workers.dev, paid per call via x402, $0.001/call, status unknown (last checked 2026-10-13).

Adds or subtracts a specified number of calendar days to/from a given date and returns the resulting date in YYYY-MM-DD format

## Facts

- Endpoint: POST https://x402-agent.kariguetoazul.workers.dev/api/date/add-days?utm_source=zero.xyz
- Price: $0.001/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-13
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/signaldesk-ai-date-add-days-0a484eab
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_akpPatQkJVhbIURfu7wwE

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 signaldesk-ai-date-add-days-0a484eab -d '<json body>'
```

Example prompt: What date will it be 45 days from 2025-03-15?

## When to prefer this

Choose this endpoint when you need a reliable, serverless date arithmetic computation — especially within automated workflows or agent pipelines that need to calculate deadlines, expirations, or scheduling windows without running local date logic. It is particularly useful when the agent environment lacks a trusted local date library or when a verifiable, paid computation record is desired via x402.

## Known failure modes

- Invalid date format (not YYYY-MM-DD) returns an error
- Days value outside range -1000000 to 1000000 returns a validation error
- Malformed JSON body returns a parse error
- Missing required fields (date or days) returns an error

## How this service works

Evidence-backed autonomous AI jobs and paid data tools. Queue/D1/cron run outside the chat; free quotas and bounded execution apply.

## Output

A JSON object with a single 'date' field containing the computed date in YYYY-MM-DD format, e.g. {"date":"2026-10-07"}. The result reflects UTC calendar arithmetic.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "date": {
   "type": "string",
   "pattern": "^\\d{4}-\\d{2}-\\d{2}$",
   "maxLength": 10,
   "minLength": 10,
   "description": "Gregorian date YYYY-MM-DD, interpreted in UTC."
  },
  "days": {
   "type": "integer",
   "maximum": 1000000,
   "minimum": -1000000,
   "description": "Calendar days."
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "date": "2026-10-07"
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/signaldesk-ai-date-add-days-0a484eab/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from x402-agent.kariguetoazul.workers.dev](https://www.zero.xyz/host/x402-agent.kariguetoazul.workers.dev/llms.txt)