LiteLLM / LiteLLM

LiteLLM Bulk Invite Creates API Keys Without sk- Prefix That Get Rejected

Fix LiteLLM bulk user invite generating API tokens without sk- prefix that are rejected on API calls Includes evidence for LiteLLM troubleshooting demand.

Source-backed Last updated May 13, 2026 1 source Needs local verification

Category: LiteLLM
Error signature: LiteLLM bulk invite API keys missing sk- prefix — tokens rejected on API calls
Quick fix: Compare the failing environment with a known working setup, then change one configuration value at a time.
Updated: May 13, 2026
Verification status: Source-backed
Evidence: 1 public source URL

Before you change production

This page includes public source URLs in the imported troubleshooting record. Compare those references with your version and environment before applying changes.

Reproduce the smallest failing action and save non-secret logs before changing configuration.
Check versions for LiteLLM, related SDKs, package managers, CI runners, and hosting providers.
Change one setting or dependency at a time, then rerun the same failing command or request.
Avoid destructive commands, credential rotation, billing changes, or security relaxations without a rollback plan.

What this error means

LiteLLM bulk invite API keys missing sk- prefix — tokens rejected on API calls is a LiteLLM failure pattern reported for developers trying to fix litellm bulk user invite generating api tokens without sk- prefix that are rejected on api calls. Based on the imported evidence, treat this as a tool-specific troubleshooting page rather than a generic API error.

Why this happens

LiteLLM issue #27849: Bulk invite response CSV generates access tokens without sk- prefix. These tokens are rejected on any API call, breaking team setup workflows.

Common causes

Admins using LiteLLM's bulk invite feature get access tokens without the standard sk- prefix, causing all API calls to fail with authentication errors. This blocks team onboarding workflows.
LiteLLM issue #27849: Bulk invite response CSV generates access tokens without sk- prefix. These tokens are rejected on any API call, breaking team setup workflows.

Quick fixes

Confirm the exact error signature matches LiteLLM bulk invite API keys missing sk- prefix — tokens rejected on API calls.
Check the LiteLLM account, local tool state, and provider configuration involved in the failing workflow.
Compare the failing environment with a known working setup, then change one configuration value at a time.

Platform/tool-specific checks

Verify the command, editor, extension, or API client that produced the error.
Compare local settings with CI, deployment, or editor-level settings when the error appears in only one environment.
Avoid deleting credentials, local model data, or project settings until the failing scope is clear.

Step-by-step troubleshooting

Capture the exact error message and the command, editor action, or request that triggered it.
Check whether the failure is account/auth, quota/rate, model/provider, local runtime, or deployment configuration.
Review the source evidence below and compare it with your environment.
Apply one change at a time and rerun the smallest failing action.
Keep the working fix documented for the team or deployment environment.

How to prevent it

Keep provider/tool configuration documented.
Record non-secret diagnostics such as tool version, provider name, model name, and command path.
Add a lightweight check before CI or production workflows depend on the tool.

Diagnostic flow for this page

Match LiteLLM bulk invite API keys missing sk- prefix — tokens rejected on API calls exactly before applying the quick fix.
Compare the failing environment with LiteLLM versions, account scope, provider settings, and deployment context.
Check the listed common causes in order, starting with the cause that best matches your logs.
Use the evidence status below to decide whether to confirm against public sources or official documentation.
Apply one reversible change, rerun the smallest failing action, and keep rollback notes.

FAQ

What does LiteLLM bulk invite API keys missing sk- prefix — tokens rejected on API calls mean in LiteLLM?

LiteLLM bulk invite API keys missing sk- prefix — tokens rejected on API calls indicates the workflow described by "LiteLLM Bulk Invite Creates API Keys Without sk- Prefix That Get Rejected" failed in a LiteLLM context. Start by confirming the exact signature and the component that emitted it.

What should I check first for LiteLLM bulk invite API keys missing sk- prefix — tokens rejected on API calls?

Check whether this cause matches your environment: Admins using LiteLLM's bulk invite feature get access tokens without the standard sk- prefix, causing all API calls to fail with authentication errors. This blocks team onboarding workflows.

Is the LiteLLM bulk invite API keys missing sk- prefix — tokens rejected on API calls guidance source-backed?

The "LiteLLM Bulk Invite Creates API Keys Without sk- Prefix That Get Rejected" page is labeled source-backed. It has 1 public source URL from github.com, so use that evidence status when deciding how much additional verification you need.

When should I avoid the quick fix for LiteLLM bulk invite API keys missing sk- prefix — tokens rejected on API calls?

For "LiteLLM Bulk Invite Creates API Keys Without sk- Prefix That Get Rejected", avoid applying "Compare the failing environment with a known working setup, then change one configuration value at a time." when the error text differs, the affected version or provider is different, or the change would touch credentials, billing, DNS, production deploy settings, or irreversible data.

What should I collect before debugging LiteLLM bulk invite API keys missing sk- prefix — tokens rejected on API calls?

For "LiteLLM Bulk Invite Creates API Keys Without sk- Prefix That Get Rejected", collect the failing LiteLLM command or request, non-secret configuration, versions, timestamps, request IDs when available, and the smallest reproduction that still triggers the signature.