# AI provider used by docs API routes (chat, samples). Read by lib/ai/provider.ts.
# OPENAI_BASE_URL is optional; leave it unset to hit the default OpenAI API,
# or point it at any OpenAI-compatible gateway.
OPENAI_API_KEY=sk-...
OPENAI_BASE_URL=

# Assistant Cloud project base URL. Required when running the artifacts/docs
# runtime samples that call the cloud (apps/docs/contexts/*RuntimeProvider.tsx).
# Get it from the assistant-cloud dashboard -> your project -> Settings -> Frontend API URL.
NEXT_PUBLIC_ASSISTANT_BASE_URL=

# Public site URL used for Open Graph metadataBase. Falls back to
# https://www.assistant-ui.com in production and http://localhost:3000 in dev.
NEXT_PUBLIC_APP_URL=

# Optional. PostHog project key. When unset, analytics are disabled.
NEXT_PUBLIC_POSTHOG_API_KEY=

# Optional. Personal access token used to raise GitHub API rate limits when
# fetching repo stats, releases, contributors, and stargazers (lib/github.ts).
GITHUB_TOKEN=

# Optional. AUI-X Prism tracing key (lib/prism-server.ts). Leave unset to
# disable Prism tracing.
AUIX_PRISM_API_KEY=

# Xulux coding agent — Blaxel cloud sandbox (app/api/xulux).
# Required to provision sandboxes for scaffolding.
# Optional. Set to "1" to enable the AI playground (XuluxApp / Xulux chat routes).
# When unset, /playground defaults to the non-AI UI Builder and all /api/xulux routes return 404.
NEXT_PUBLIC_AUI_AI_PLAYGROUND_ENABLED=
BL_WORKSPACE=
BL_API_KEY=
# Optional sandbox overrides:
BL_SANDBOX_TEMPLATE=
BL_REGION=

# Xulux agent usage budget (/api/xulux/chat only).
# Enabled by default: $1/chat, $2/day, 8 turns/chat, 10 chats/day.
# Uses Upstash Redis when UPSTASH_REDIS_REST_URL is set; otherwise in-memory (single instance).
# Set to "0" to disable gating entirely.
# XULUX_USAGE_BUDGET_ENABLED=0
# Optional. Force in-memory store even when Upstash is configured (local/tests).
# XULUX_USAGE_BUDGET_STORE=memory
# Defaults: $1/chat, $2/day, 8 turns/chat, 10 chats/day
# XULUX_CHAT_BUDGET_USD=1
# XULUX_DAILY_BUDGET_USD=2
# XULUX_MAX_TURNS_PER_CHAT=8
# XULUX_MAX_CHATS_PER_DAY=10