How do I fix Invalid Authentication (401) errors with Serverless Inference?

A 401 Invalid Authentication error means your API key is invalid or your W&B project entity or name is incorrect. Use the checks on this page to confirm both values are correct so requests can authenticate.

Verify your API key

Confirm that you have a valid, current API key before troubleshooting other causes.

1. Create a new API key at User Settings.
2. Store your API key securely.

Check your project configuration

Requests must specify the project as [YOUR-TEAM]/[YOUR-PROJECT] so the service can route them to the correct W&B team and project. Replace [YOUR-API-KEY] with your W&B API key, and replace [YOUR-TEAM]/[YOUR-PROJECT] with your W&B team and project.

Python example:

client = openai.OpenAI(
    base_url='https://api.inference.wandb.ai/v1',
    api_key="[YOUR-API-KEY]",
    project="[YOUR-TEAM]/[YOUR-PROJECT]",  # Must match your W&B team and project
)

Bash example:

curl https://api.inference.wandb.ai/v1/chat/completions \
  -H "Authorization: Bearer [YOUR-API-KEY]" \
  -H "OpenAI-Project: [YOUR-TEAM]/[YOUR-PROJECT]"

Common mistakes

• Using personal entity instead of team name.
• Misspelling team or project name.
• Missing forward slash between team and project.
• Using an expired or deleted API key.

Troubleshoot remaining issues

• Verify the team and project exist in your W&B account.
• Ensure you have access to the specified team.
• If the current API key isn’t working, create a new one.

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Inference