> ## Documentation Index
> Fetch the complete documentation index at: https://docs.wandb.ai/llms.txt
> Use this file to discover all available pages before exploring further.

# 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](https://wandb.ai/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:**

```python theme={null}
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:**

```bash theme={null}
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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