# Weather Point Lookup — NWS Grid Metadata

> Weather Point Lookup — NWS Grid Metadata is a paid API for AI agents from api.maxwellinternational.ai, paid per call via x402, $0.005/call, status unknown (last checked 2026-10-02).

Returns NWS grid point metadata (forecast office, grid coordinates, timezone, county, forecast URL) for a given latitude/longitude

## Facts

- Endpoint: GET https://api.maxwellinternational.ai/v1/weather/point?utm_source=zero.xyz
- Price: $0.005/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-02
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/weather-point-lookup-nws-grid-metadata-d42cbe1c
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_mfL0K0JDsh7qztvmAv0oa

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 weather-point-lookup-nws-grid-metadata-d42cbe1c
```

Example prompt: What's the NWS forecast office and grid coordinates for Denver, Colorado at latitude 39.7392 and longitude -104.9903?

## When to prefer this

Use this endpoint when you need to resolve a US latitude/longitude coordinate to NWS grid metadata — particularly when you need the WFO code, grid X/Y, forecast URL, timezone, or county zone for a point. It is a lightweight, low-cost lookup step before fetching actual NWS forecast data. Prefer this over calling the NWS API directly when payment is handled via x402 micropayments and you want a clean JSON wrapper around the NWS point resolution response.

## Known failure modes

- Coordinates outside the US (NWS only covers US territories) — likely returns an error or empty result
- Invalid or missing lat/lon query parameters — bad request error
- NWS upstream API unavailability causing downstream failure
- Coordinates in ocean or unsupported region returning no grid match

## How this service works

NWS point metadata for a US lat/lon: forecast office, grid x/y, time zone, county, nearest observation station and the NWS forecast links. Changes rarely. From the NWS (US and territories), cached and refreshed about every 3 hours; a location not yet cached answers 404, is not charged, and is queued.

## Output

A JSON object containing: latitude, longitude, SKU identifier, NWS Weather Forecast Office (WFO) code, grid X and Y coordinates, state name, county zone URL, country, IANA timezone string, forecast URL (linking to the NWS gridpoint forecast), and forecast office URL.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "$schema": "https://json-schema.org/draft/2020-12/schema",
 "required": [
  "input"
 ],
 "properties": {
  "input": {
   "type": "object",
   "required": [
    "type",
    "method"
   ],
   "properties": {
    "type": {
     "type": "string",
     "const": "http"
    },
    "method": {
     "enum": [
      "GET",
      "HEAD",
      "DELETE"
     ],
     "type": "string"
    },
    "headers": {
     "type": "object",
     "additionalProperties": {
      "type": "string"
     }
    },
    "queryParams": {
     "type": "object",
     "additionalProperties": {
      "type": "string"
     }
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": "object"
    }
   }
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "lat": 39.7392,
  "lon": -104.9903,
  "sku": "weather.point",
  "wfo": "BOU",
  "gridX": 63,
  "gridY": 62,
  "state": "Colorado",
  "county": "https://api.weather.gov/zones/county/COC031",
  "country": "United States",
  "timezone": "America/Denver",
  "forecastUrl": "https://api.weather.gov/gridpoints/BOU/63,62/forecast",
  "forecastOffice": "https://api.weather.gov/offices/BOU"
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/weather-point-lookup-nws-grid-metadata-d42cbe1c/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from api.maxwellinternational.ai](https://www.zero.xyz/host/api.maxwellinternational.ai/llms.txt)