# Delx Commerce — Days Between Dates

> Delx Commerce — Days Between Dates is a paid API for AI agents from commerce.delx.ai, paid per call via x402, $0.001/call, status unknown (last checked 2026-10-01).

Calculates the exact number of days between two date strings, returning a verified integer result for $0.001 USDC per call with no signup required.

## Facts

- Endpoint: POST https://commerce.delx.ai/api/v1/x402/days-between?utm_source=zero.xyz
- Price: $0.001/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-01
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/delx-commerce-days-between-dates-58b024fe
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_4Fd-yO5_j0HM25rgLx5Xj

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 delx-commerce-days-between-dates-58b024fe -d '<json body>'
```

Example prompt: How many days are there between January 15, 2024 and March 22, 2025?

## When to prefer this

Choose this endpoint when you need a fast, verified, pay-per-use date difference computation with no prior account setup, especially in agent workflows that require cryptographic payment receipts (x402/USDC on Base or Solana). It is ideal for one-off or low-volume date arithmetic calls where integrating a full SDK or managing API keys is undesirable. Prefer it over local computation when auditability or verifiable delivery of results matters.

## Known failure modes

- Invalid or unparseable date strings in start or end fields — may return error or unexpected result
- Missing required start or end fields — likely returns a validation error
- End date before start date — may return a negative number or error depending on implementation
- Incorrect date format not recognized by the parser — returns error response
- Payment failure (USDC/x402) — 402 Payment Required response before computation occurs

## How this service works

Pay-per-result APIs for agents. No signup. Exact price. Verifiable delivery. USDC on Base + Solana via x402.

## Output

Returns a JSON object with an 'ok' boolean (true on success), a 'days' integer representing the number of days between the two input dates, and a 'schema' string ('delx/util-days-between/v1') identifying the response format.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "end": {
   "type": "string",
   "description": "Input field: end."
  },
  "start": {
   "type": "string",
   "description": "Input field: start."
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "ok": true,
  "days": 5,
  "schema": "delx/util-days-between/v1"
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/delx-commerce-days-between-dates-58b024fe/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from commerce.delx.ai](https://www.zero.xyz/host/commerce.delx.ai/llms.txt)