# Aviation Weather TAF Forecast Summary

> Aviation Weather TAF Forecast Summary is a paid API for AI agents from aviation-weather.x402tookit.com, paid per call via x402, $0.02/call, status unknown (last checked 2026-10-29).

Returns a summarized TAF (Terminal Aerodrome Forecast) for an airport, including the worst flight category in the next 6–24 hours, when it starts, and forecast periods with wind, visibility, and ceiling data.

## Facts

- Endpoint: GET https://aviation-weather.x402tookit.com/taf?utm_source=zero.xyz
- Price: $0.02/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-29
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/aviation-weather-taf-forecast-summary-598c5a51
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_6WU8K8b8F4gn3hl9yu_b8

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 aviation-weather-taf-forecast-summary-598c5a51
```

Example prompt: What's the worst flight category forecast at KORD over the next 18 hours — will there be any IFR or LIFR periods, and when do they start?

## When to prefer this

Use this endpoint when you need a concise, pre-analyzed forecast summary rather than raw TAF text — it saves the agent from parsing complex meteorological codes by returning structured flight categories and a human-readable verdict. Prefer this over a raw METAR endpoint when the question is forward-looking (next 6–24 hours) rather than current conditions. Ideal for go/no-go decision support, preflight planning, or automated dispatch alerts.

## Known failure modes

- Invalid or unknown ICAO code returns an error or null fields
- TAF data unavailable for the requested airport (non-US/non-international stations)
- Look-ahead hours outside 3–30 range may return a validation error
- Degraded mode flag set if data source is partially unavailable
- Stale TAF if NWS/NOAA upstream has not updated recently

## How this service works

Airport forecast (TAF) summarized: worst flight category in the next 6-24 hours, when it starts, and the periods.

## Output

Returns the worst flight category (VFR/MVFR/IFR/LIFR) expected within the look-ahead window, when the first degraded period begins, an array of forecast periods with category, wind, gusts, ceiling, visibility, and weather phenomena, plus a plain-language summary and verdict, the raw TAF text, issue time, and data source 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"
     ],
     "type": "string"
    },
    "queryParams": {
     "type": "object",
     "required": [
      "icao"
     ],
     "properties": {
      "icao": {
       "type": "string",
       "description": "4-letter ICAO airport code"
      },
      "hours": {
       "type": "integer",
       "description": "Look-ahead hours, 3 to 30, default 12"
      }
     }
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": "object",
     "properties": {
      "asOf": {
       "type": [
        "null",
        "string"
       ]
      },
      "icao": {
       "type": [
        "null",
        "string"
       ]
      },
      "issued": {
       "type": [
        "null",
        "string"
       ]
      },
      "rawTaf": {
       "type": [
        "null",
        "string"
       ]
      },
      "source": {
       "type": [
        "null",
        "string"
       ]
      },
      "periods": {
       "type": [
        "array",
        "null"
       ],
       "items": {
        "type": "object",
        "properties": {
         "to": {
          "type": [
           "null",
           "string"
          ]
         },
         "from": {
          "type": [
           "null",
           "string"
          ]
         },
         "change": {
          "type": [
           "null",
           "string"
          ]
         },
         "gustKt": {
          "type": [
           "null",
           "number"
          ]
         },
         "windKt": {
          "type": [
           "null",
           "number"
          ]
         },
         "weather": {
          "type": [
           "null",
           "string"
          ]
         },
         "category": {
          "type": [
           "null",
           "string"
          ]
         },
         "ceilingFt": {
          "type": [
           "null",
           "number"
          ]
         },
         "probability": {},
         "visibilityMi": {
          "type": [
           "null",
           "number"
          ]
         }
        }
       }
… (truncated)
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/aviation-weather-taf-forecast-summary-598c5a51/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from aviation-weather.x402tookit.com](https://www.zero.xyz/host/aviation-weather.x402tookit.com/llms.txt)