# x402-toolbox Date Add/Subtract

> x402-toolbox Date Add/Subtract is a paid API for AI agents from x402-toolbox.shablony-pro.workers.dev, paid per call via x402, $0.002/call, status unknown (last checked 2026-09-29).

Adds or subtracts a duration from a given date, returning the resulting date — paid per call via USDC on Base with no signup required.

## Facts

- Endpoint: GET https://x402-toolbox.shablony-pro.workers.dev/time/date-add-subtract?utm_source=zero.xyz
- Price: $0.002/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-29
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/x402-toolbox-date-add-subtract-74d22a31
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_y6EiPkNNTZExOzsO7tTgh

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 x402-toolbox-date-add-subtract-74d22a31
```

Example prompt: What date is exactly 90 days from today? Use the date add/subtract tool to calculate it.

## When to prefer this

Choose this endpoint when you need a deterministic, serverless, pay-per-call date arithmetic operation with no authentication overhead — ideal for AI agents that need to compute deadlines, expiry dates, or historical offsets on the fly without managing API keys or subscriptions.

## Known failure modes

- Invalid date format returns an error response
- Missing required date or duration parameter results in bad request
- Unsupported time unit may return an error
- Network or payment failure on x402 protocol results in 402 response if payment is not settled

## How this service works

309 deterministic pay-per-call tools for AI agents over x402 (USDC, Base). No signup, no API key: the payment is the identity.

## Output

Returns a JSON object with ok: true and the computed resulting date after applying the specified addition or subtraction to the input date.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "schema": {
   "type": "string"
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "ok": true,
  "paid": true
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/x402-toolbox-date-add-subtract-74d22a31/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from x402-toolbox.shablony-pro.workers.dev](https://www.zero.xyz/host/x402-toolbox.shablony-pro.workers.dev/llms.txt)