Ollama / Ollama
Ollama Launch Claude Fails with 400 When CLAUDE_CODE_USE_BEDROCK=1 Is Set
Fix ollama launch claude API Error 400 invalid model identifier with Bedrock config Includes evidence for Ollama troubleshooting demand.
- Category
- Ollama
- Error signature
API Error (gemma4): 400 The provided model identifier is invalid- Quick fix
- Compare the failing environment with a known working setup, then change one configuration value at a time.
- Updated
What this error means
API Error (gemma4): 400 The provided model identifier is invalid is a Ollama failure pattern reported for developers trying to fix ollama launch claude api error 400 invalid model identifier with bedrock config. Based on the imported evidence, treat this as a tool-specific troubleshooting page rather than a generic API error.
Why this happens
User has CLAUDE_CODE_USE_BEDROCK=1 in ~/.claude/settings.json. ollama pull gemma4 succeeds, ollama launch claude installs gemma4 but doesn’t set ANTHROPIC_BASE_URL. All requests route to Bedrock which rejects the local model name.
Common causes
- ollama launch claude sets model name but doesn’t override backend routing. If user has CLAUDE_CODE_USE_BEDROCK=1 in settings.json, requests route to Bedrock instead of Ollama, causing 400 error.
- User has CLAUDE_CODE_USE_BEDROCK=1 in ~/.claude/settings.json. ollama pull gemma4 succeeds, ollama launch claude installs gemma4 but doesn’t set ANTHROPIC_BASE_URL. All requests route to Bedrock which rejects the local model name.
Quick fixes
- Confirm the exact error signature matches
API Error (gemma4): 400 The provided model identifier is invalid. - Check the Ollama 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.
Sources checked
Evidence note: User has CLAUDE_CODE_USE_BEDROCK=1 in ~/.claude/settings.json. ollama pull gemma4 succeeds, ollama launch claude installs gemma4 but doesn’t set ANTHROPIC_BASE_URL. All requests route to Bedrock which rejects the local model name.
Related errors
- Ollama Claude Code Bedrock conflict
- ollama launch claude wrong backend
- CLAUDE_CODE_USE_BEDROCK override needed
FAQ
What should I check first?
Start with the exact API Error (gemma4): 400 The provided model identifier is invalid text and the smallest action that reproduces it.
Can I ignore this error?
No. Treat it as a failed Ollama workflow until the root cause is understood.
Is this guaranteed to have one fix?
No. The imported evidence supports the troubleshooting path above, but tool behavior can vary by account, plan, version, provider, and local configuration.
How do I know the fix worked?
Rerun the same command, editor action, or request. The fix is working when that action completes without API Error (gemma4): 400 The provided model identifier is invalid.