# Aviation Wind Triangle Calculator (E6B)

> Aviation Wind Triangle Calculator (E6B) is a paid API for AI agents from aviation-calc.x402tookit.com, paid per call via x402, $0.02/call, status unknown (last checked 2026-10-29).

Computes E6B wind triangle solutions: wind correction angle and heading/groundspeed for a given course, or track and groundspeed for a given heading flown.

## Facts

- Endpoint: GET https://aviation-calc.x402tookit.com/wind-triangle?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-wind-triangle-calculator-e6b-744db5c0
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_8rk-MMnsQwHLOsBrzKYvN

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-wind-triangle-calculator-e6b-744db5c0
```

Example prompt: I'm flying a true course of 090 degrees with a true airspeed of 120 knots, the wind is from 045 degrees at 25 knots, and magnetic variation is 12 degrees east — what heading do I need to fly and what groundspeed can I expect?

## When to prefer this

Use this endpoint when you need precise E6B-style wind triangle arithmetic for aviation navigation — specifically to find the heading and groundspeed to fly a desired course, or to find the actual track and groundspeed resulting from a flown heading, given true airspeed and wind. Prefer this over generic wind component calculators when you need the full triangle solution including wind correction angle and magnetic heading output.

## Known failure modes

- Missing required parameters (tasKt, windFromDeg, windKt) returns an error
- Neither courseDeg nor headingDeg supplied — unclear which triangle solution is requested
- Values outside allowed ranges (e.g. TAS below 20 or above 700 kt) may return validation errors or degraded results
- Impossible wind scenarios (wind speed exceeding TAS for course solution) may produce no valid heading

## How this service works

E6B wind triangle: wind correction angle, heading and groundspeed for a course, or track and groundspeed for a heading flown.

## Output

Returns the wind correction angle in degrees, the true and magnetic heading to fly (or track made good), and groundspeed in knots. Also includes the echo of inputs like TAS, wind, course, and optionally a groundspeed change value. May include a summary, disclaimer, or degraded-quality flag if results are edge cases.

## 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": [
      "tasKt",
      "windFromDeg",
      "windKt"
     ],
     "properties": {
      "tasKt": {
       "type": "number",
       "description": "True airspeed in knots, 20 to 700"
      },
      "windKt": {
       "type": "number",
       "description": "Wind speed in knots, 0 to 250"
      },
      "courseDeg": {
       "type": "number",
       "description": "True course to fly, degrees 0 to 360 (gives heading and groundspeed)"
      },
      "headingDeg": {
       "type": "number",
       "description": "True heading flown, degrees 0 to 360 (gives track and groundspeed)"
      },
      "windFromDeg": {
       "type": "number",
       "description": "Direction the wind blows FROM, degrees 0 to 360 (true)"
      },
      "magneticVariationDeg": {
       "type": "number",
       "description": "Magnetic variation in degrees, east positive (negative for west), -60 to 60"
      }
     }
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": "object",
     "properties": {
      "asOf": {
       "type": [
        "null",
        "string"
       ]
      },
      "tasKt": {
       "type": [
        "null",
        "number"
       ]
      },
      "source": {
       "type": [
        "null",
        "string"
       ]
      },
      "windKt": {
       "type": [
        "null",
        "number"
       ]
      },
      "reasons": {
       "type": [
        "array",
        "null"
       ],
       "items": {
        "type": "string"
       }
      },
      "summary": {
       "type": [
        "null",
        "string"
       ]
      },
      "verdict": {
       "type": [
        "null",
        "string"
       ]
      },
      "degraded": {
       "type": [
        "boolean",
        "null"
       ]
      },
      "courseDeg": {
       "type": [
        "null",
        "number"
       ]
      },
      "disclaimer": {
       "type": [
        "null",
        "string"
       ]
      },
  
… (truncated)
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/aviation-wind-triangle-calculator-e6b-744db5c0/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from aviation-calc.x402tookit.com](https://www.zero.xyz/host/aviation-calc.x402tookit.com/llms.txt)