sipherxyz/setup-bpgenerator
skills/setup-bpgenerator/SKILL.md
Configure Ultimate Blueprint Generator plugin to use ai-gateway — detects API key from env vars and writes ApiKeySlots.json
tools
Updated Apr 20, 2026
$ install --global
skillsauthnpx skillsauth add sipherxyz/universal-ue-skills setup-bpgeneratorInstall this skill globally with one command. Works with Claude Code, Cursor, and Windsurf.
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SKILL.md
- name:
- setup-bpgenerator
- description:
- Configure Ultimate Blueprint Generator plugin to use ai-gateway — detects API key from env vars and writes ApiKeySlots.json
Setup BpGenerator
Configure the Ultimate Blueprint Generator plugin (Slot 0) to use a custom AI gateway.
Platform: Windows + PowerShell
What It Does
- Walks up from the script location until it finds a
.uprojectfile (project root) - Detects API key from supported environment variables (in priority order)
- XOR+Base64-encodes the key as the plugin expects
- Patches
Saved/BpGeneratorUltimate/ApiKeySlots.json— Slot 0 only, other slots preserved
Prerequisites
- Unreal Editor opened at least once with the plugin enabled (creates
ApiKeySlots.json) - API key set in one of the supported environment variables
Environment Variables (checked in order)
| Variable | Notes |
|----------|-------|
| AI_GATEWAY_API_KEY | Preferred |
| ATHERLABS_API_KEY | Alternative |
| SIPHER_AI_KEY | Internal alias |
| OPENAI_API_KEY | Fallback |
| ANTHROPIC_API_KEY | Fallback |
Defaults
| Setting | Value |
|---------|-------|
| Provider | Custom |
| BaseURL | https://ai-gateway.atherlabs.com/v1/chat/completions |
| Model | gpt-5.4 |
| Slot | 0 (ActiveSlot) |
Workflow
Step 1 — Set your API key
$env:AI_GATEWAY_API_KEY = "clp_your_key_here"
Step 2 — Run the script
Locate the installed script (it's inside this skill folder) and run:
powershell -ExecutionPolicy Bypass -File "path/to/skills/setup-bpgenerator/scripts/setup-bpgenerator.ps1"
For a project-scoped install (run from project root):
# Claude
powershell -ExecutionPolicy Bypass -File ".claude/skills/setup-bpgenerator/scripts/setup-bpgenerator.ps1"
# Codex
powershell -ExecutionPolicy Bypass -File ".codex/skills/setup-bpgenerator/scripts/setup-bpgenerator.ps1"
Optional parameter overrides:
# Different model
... -ModelName "claude-sonnet-4-6"
# Different base URL
... -BaseURL "https://my-gateway.example.com/v1/chat/completions"
Step 3 — Restart Unreal Editor
The plugin reads config at startup. Restart the editor (or reload the BpGenerator plugin) for changes to take effect.
Error Reference
| Error | Fix |
|-------|-----|
| Could not locate project root | Run from inside the UE project directory |
| No API key found in environment | Set AI_GATEWAY_API_KEY env var |
| Config not found | Open Unreal Editor once to generate ApiKeySlots.json |
Config File
<ProjectRoot>/Saved/BpGeneratorUltimate/ApiKeySlots.json
Only Slot 0 is modified. All other slots remain unchanged.
Legacy Metadata
skill: setup-bpgenerator
invoke: /dev-workflow:setup-bpgenerator
type: setup
category: tooling
scope: project-root
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