# Rengi Forge GLB LOD Chain Generator

> Rengi Forge GLB LOD Chain Generator is a paid API for AI agents from rengi.dev, paid per call via x402, $0.2/call, status unknown (last checked 2026-10-22).

Generates a multi-level LOD chain from a GLB file with locked UV borders, producing one optimized GLB per level, a side-by-side render, and Unity LODGroup transition heights

## Facts

- Endpoint: POST https://rengi.dev/v1/glb-optimizer/lod?utm_source=zero.xyz
- Price: $0.2/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-22
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/rengi-forge-glb-lod-chain-generator-5770c46c
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_RG015jQIq1jeb-D2wCdIQ

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 rengi-forge-glb-lod-chain-generator-5770c46c -d '<json body>'
```

Example prompt: Take my GLB model at https://assets.example.com/character.glb and generate a LOD chain at 100%, 50%, 25%, and 10% triangle counts with borders locked so UV seams and silhouettes stay intact — I need one GLB per level plus the Unity LODGroup transition heights.

## When to prefer this

Choose this endpoint when you need game-ready LOD levels from a GLB with UV seam and silhouette integrity preserved — particularly for Unity workflows where LODGroup transition heights are needed out of the box. Prefer this over generic mesh-decimation tools when UV correctness and border locking are critical, or when you need all LOD levels generated in a single API call rather than running separate decimation passes manually.

## Known failure modes

- Invalid or unreachable GLB URL returns an error with the HTTP status of the fetch failure
- GLB file is malformed or not a valid glTF binary — returns parse error
- Ratios array has fewer than 2 or more than 6 entries — schema validation error
- Ratio values outside 0.01–1.0 range — validation rejection
- Model has no triangles or is a point cloud — decimation cannot proceed
- File too large for processing within timeout — timeout or size limit error

## How this service works

GLB optimizer: Generate a LOD chain from a GLB (default 100/50/25/10% of triangles) with locked borders so UV seams and silhouettes hold; one GLB per level, a side-by-side render and Unity LODGroup transition heights. Full schema: https://rengi.dev/v1/glb-optimizer/schema

## Output

Returns one optimized GLB file per LOD level (matching the requested ratios), a side-by-side render image comparing all levels, and Unity LODGroup transition height values ready to paste into a Unity project. Each GLB has its open edges and UV seams preserved due to border locking.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "glb": {
   "type": "string"
  },
  "glbUrl": {
   "type": "string",
   "format": "uri"
  },
  "ratios": {
   "type": "array",
   "items": {
    "type": "number",
    "maximum": 1,
    "minimum": 0.01
   },
   "default": [
    1,
    0.5,
    0.25,
    0.1
   ],
   "maxItems": 6,
   "minItems": 2
  },
  "lockBorder": {
   "type": "boolean",
   "default": true,
   "description": "Keep open edges and UV seams in place (recommended)."
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/rengi-forge-glb-lod-chain-generator-5770c46c/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from rengi.dev](https://www.zero.xyz/host/rengi.dev/llms.txt)