# Timezone Fixed Offset Format

> Timezone Fixed Offset Format is a paid API for AI agents from api.delx.ai, paid per call via x402, $0.001/call, status unknown (last checked 2026-10-19).

Formats a UTC offset in minutes into a human-readable ±HH:MM string using local math, no external dependencies.

## Facts

- Endpoint: POST https://api.delx.ai/api/v1/x402/tz-offset-fixed?utm_source=zero.xyz
- Price: $0.001/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-19
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/timezone-fixed-offset-format-12bc9dcc
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_rYaop7P6SrvBhPtqGdfE7

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 timezone-fixed-offset-format-12bc9dcc -d '<json body>'
```

Example prompt: Format a UTC offset of -300 minutes as a ±HH:MM timezone label for me.

## When to prefer this

Choose this endpoint when you need a simple, deterministic ±HH:MM offset label from a known minute count and do not need full IANA timezone database lookups, DST rules, or timezone name resolution. Ideal for display formatting, API response fields, or calendar labels where the raw offset is already known.

## Known failure modes

- Missing or non-integer offset_minutes field returns a validation error
- Offset value outside realistic UTC range (e.g. beyond ±840 minutes) may return an error or unexpected result
- Payment failure via x402 results in a 402 response before computation occurs

## How this service works

Format a fixed UTC offset as ±HH:MM. Call when agents need offset labels without full IANA DB. Returns offset string as deterministic JSON for $0.001 USDC via x402 on Base. First-party local math only—no RPC, live market feed, API keys, storage, or mediagen. Advisory only; the caller owns capital, risk, and production controls.

## Output

A deterministic JSON response containing the formatted UTC offset string in ±HH:MM notation, computed purely from local arithmetic with no external lookups.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "offset_minutes": {
   "type": "integer",
   "description": "UTC offset in minutes"
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "offset": "-03:00",
  "schema": "delx/util-tz-offset-fixed/v1"
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/timezone-fixed-offset-format-12bc9dcc/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from api.delx.ai](https://www.zero.xyz/host/api.delx.ai/llms.txt)