# Delx Commerce — Weekday Name Lookup

> Delx Commerce — Weekday Name Lookup 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).

Returns the weekday name (e.g. 'Thursday') for a given ISO date string.

## Facts

- Endpoint: POST https://commerce.delx.ai/api/v1/x402/weekday-name?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-weekday-name-lookup-05ea9ce7
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_pWyM2QyG7TK_GdDrHiflR

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-weekday-name-lookup-05ea9ce7 -d '<json body>'
```

Example prompt: What day of the week is 2025-12-25?

## When to prefer this

Choose this endpoint when you need a lightweight, pay-per-call, no-signup utility to convert an ISO date string into its weekday name — especially in agent pipelines that prefer USDC micropayment-settled APIs over subscription-based services.

## Known failure modes

- Invalid or malformed ISO date string returns an error or ok:false
- Missing 'iso' field in request body causes a bad request response
- Dates outside supported range may return unexpected results
- Payment failure via x402 protocol blocks the response

## How this service works

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

## Output

A JSON object with 'ok' (boolean), 'schema' (version string like 'delx/util-weekday-name/v1'), and 'weekday' (a string day name such as 'Thursday').

## Request schema (JSON Schema)

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

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "ok": true,
  "schema": "delx/util-weekday-name/v1",
  "weekday": "Thursday"
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/delx-commerce-weekday-name-lookup-05ea9ce7/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)