# Genworks NACA Airfoil NURBS CAD Generator

> Genworks NACA Airfoil NURBS CAD Generator is a paid API for AI agents from genworks.com, paid per call via x402, $0.03/call, status unknown (last checked 2026-10-11).

Generates STEP or IGES NURBS curve files for NACA 4-digit or 5-digit airfoil families given digit codes, chord scale, sample points, and approximation tolerance

## Facts

- Endpoint: GET https://genworks.com/demo/naca-nurbs/cad?utm_source=zero.xyz
- Price: $0.03/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-11
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/genworks-naca-airfoil-nurbs-cad-generator-af3997d3
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_T-cGQm5IXtoHaM12Dgvyy

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 genworks-naca-airfoil-nurbs-cad-generator-af3997d3
```

Example prompt: Generate a STEP file for the NACA 0012, 2412, and 23012 airfoil family with a chord of 1.5 and 300 sample points per airfoil at a NURBS tolerance of 0.0005.

## When to prefer this

Use this endpoint when you need a machine-readable CAD file (STEP or IGES) of a standard NACA 4- or 5-digit airfoil for import into CAD, CFD, FEA, or manufacturing tools. Prefer it over manual coordinate generation when NURBS accuracy and industry-standard file format compatibility are required. It handles families of up to 12 airfoils in one call, making it ideal for parametric design studies.

## Known failure modes

- Invalid or unsupported NACA digit code returns an error (only 4- and 5-digit NACA codes supported)
- More than 12 airfoil codes in a single request may be rejected
- Points value outside 50–500 range returns a validation error
- Tolerance value outside 0.0001–0.01 range returns a validation error
- Unsupported format string (not 'step' or 'iges') returns an error
- Payment not completed via x402 protocol returns 402 Payment Required

## How this service works

NACA 4/5-digit airfoil family as STEP or IGES NURBS curves (digits, chord, points, tolerance)

## Output

A binary or text STEP (.stp) or IGES (.igs) CAD file containing NURBS curve representations of one or more NACA 4- or 5-digit airfoil profiles, scaled to the specified chord and approximated at the requested sample density and tolerance. The file can be imported directly into CAD, CAM, CFD, or FEA tools.

## 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": [
      "digits"
     ],
     "properties": {
      "chord": {
       "type": "number",
       "description": "Scale factor applied to the unit chord; default 1"
      },
      "trace": {
       "type": "string",
       "description": "1 to be given the free verification record for this result (the contract, the standards, the checks, the numbers); omitted, nothing extra is included"
      },
      "digits": {
       "type": "string",
       "description": "One NACA 4- or 5-digit code, or a comma-separated family of up to twelve, e.g. 0012,2412,23012"
      },
      "format": {
       "type": "string",
       "description": "step or iges; default step (or request /cad.stp, /cad.igs)"
      },
      "points": {
       "type": "integer",
       "description": "Sample points per airfoil, 50 to 500; default 216"
      },
      "tolerance": {
       "type": "number",
       "description": "NURBS approximation tolerance, 0.0001 to 0.01; default 0.0005"
      }
     }
    }
   },
   "additionalProperties": false
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/genworks-naca-airfoil-nurbs-cad-generator-af3997d3/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from genworks.com](https://www.zero.xyz/host/genworks.com/llms.txt)