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OpusVIP

Troubleshooting

Find your symptom below for the cause and the fix. Most problems come down to an environment variable that didn't take effect, a key that was copied incompletely, or a base URL with an extra path.

Last updated:

Three checks first

Three checks 
echo $ANTHROPIC_BASE_URL     # should be https://api.opusvip.dev, without /v1
echo $ANTHROPIC_AUTH_TOKEN    # should be a key starting with sk-
claude -p "hello"             # a reply means it works

On Windows PowerShell, use $env:ANTHROPIC_BASE_URL to inspect a variable. If you set the variables in the env field of ~/.claude/settings.json, echo in the terminal won't show them. That's expected; go by the result of claude -p "hello".

Error reference

SymptomCause and fix
Request rejected: client not supportedOpusVIP only accepts the official Claude Code CLI. Use the official Claude Code and keep it up to date; requests from other clients, SDKs and curl are rejected.
Still asked to sign in to AnthropicMake sure the environment variables are active in the current terminal. On a fresh install you can skip onboarding with hasCompletedOnboarding, shown below.
401 / authentication failedThe key is incomplete or has been deleted; copy it again from the console. If you previously signed in to claude.ai, run /logout first. If ANTHROPIC_API_KEY is set, unset it.
404 / path not foundANTHROPIC_BASE_URL has an extra path such as /v1. Use only https://api.opusvip.dev.
Insufficient balanceYour credits have run out. Top up in the console with Stripe (card, Alipay or WeChat Pay): $0.15 buys 100 credits, and the minimum is $1.50 (1,000 credits). Failed requests are never billed.
Connection timeout or TLS errorCheck HTTPS_PROXY, HTTP_PROXY, ALL_PROXY and your proxy software's rules, and make sure nothing blocks or misroutes api.opusvip.dev.
Settings don't take effect on Windowssetx only affects new windows. Close all terminals and IDEs and reopen them, or use settings.json instead; see the IDE docs.
Haiku 5.5 requests in the logClaude Code uses Haiku for light background tasks such as generating session titles. They are billed at Haiku 5.5 list prices.

Skip onboarding

~/.claude.json (add only this entry) 
{
  "hasCompletedOnboarding": true
}

Still stuck

Find the request in the console log and email hello@opusvip.dev with the request time and the error message.