[Bug]: Claude code doesn't support AWS Bedrock usage #1257

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1. super-original

   added

   bugSomething is broken or behaving incorrectly.Something is broken or behaving incorrectly.

   needs-triageIssue needs maintainer review and initial categorization.Issue needs maintainer review and initial categorization.

   on Mar 20, 2026
2. Noojuno commented on Mar 21, 2026

   

   Noojuno

   on Mar 21, 2026

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   @super-original I will have a look at this now!

   How are you setting up Claude Code to use bedrock?
3. super-original commented on Mar 21, 2026

   

   super-original

   on Mar 21, 2026

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   @Noojuno
   I have the following environment variables set in ~/.claude/settings.json under the "env" key:

   {
     "env": {
       "CLAUDE_CODE_USE_BEDROCK": "1",
       "AWS_REGION": "us-east-1",
       "AWS_DEFAULT_REGION": "us-east-1",
       "ANTHROPIC_DEFAULT_OPUS_MODEL": "us.anthropic.claude-opus-4-6-v1"
     }
   }
   

   For AWS auth, I'm using IAM credentials from the root account configured in ~/.aws/config with the default profile (not SSO). Claude Code in the CLI works perfectly with this setup, it's only T3 Code that returns "Credit balance is too low", which makes me think T3 Code might be checking for an Anthropic API key/credits instead of passing through the Bedrock configuration.

   👍React with 👍1Reacted by Steven Matchett
4. rkarimpour-diligent commented on Mar 23, 2026

   

   rkarimpour-diligent

   on Mar 23, 2026

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   Same issue here. I found that you can force T3 to pick those settings up by explicitly adding them to the environment variables and then run T3 from terminal using the full binary path /Applications/T3 Code (Alpha).app/Contents/MacOS/T3 Code (Alpha).

   👍React with 👍2Reacted by Steven Matchett and Nisanth Chunduru
5. harshit97 commented on Mar 23, 2026

   

   harshit97

   on Mar 23, 2026

   Last edited by harshit97

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   @rkarimpour-diligent @super-original @Noojuno hey folks, can you look at the change in my PR? If you've got the time, run it locally and see if it fixes things for you. It makes Claude work for me across the board with different types of auth modes, but it would be awesome to get more data points from you guys.
6. wagnersza commented on Mar 24, 2026

   

   wagnersza

   on Mar 24, 2026

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   Same bug here
7. dafzthomas commented on Mar 25, 2026

   

   dafzthomas

   on Mar 25, 2026

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   In my case, my work uses AWS SSO to authenticate the with the bedrock ARN's. If these are within the harness then should trigger as it would inside Claude Code?
8. dafzthomas commented on Mar 27, 2026

   

   dafzthomas

   on Mar 27, 2026

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   So if the Bedrock settings are set inside ~/.claude/settings.json, and you add custom Claude models pointing to your model arns in the settings - it works.
9. maria-rcks

   closed this as completedon Apr 26, 2026
10. tijmenvangurp commented on Jun 8, 2026

    

    tijmenvangurp

    on Jun 8, 2026

    Last edited by tijmenvangurp

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    Worked for me (AWS SSO setup):

    Two things needed:

    1. Add Bedrock env vars to ~/.claude/settings.json:

    "env": {
      "CLAUDE_CODE_USE_BEDROCK": "1",
      "AWS_REGION": "us-east-1",
      "AWS_DEFAULT_REGION": "us-east-1",
      "AWS_PROFILE": "your-sso-profile-name"
    }

    AWS_PROFILE is required if you use SSO with named profiles and no default profile — without it T3 can't resolve credentials.

    2. Set the model in T3's instance Launch arguments:

    --model us.anthropic.claude-sonnet-4-5-20250929-v1:0
    

    T3 defaults to the us.anthropic.claude-sonnet-4-6 format which is invalid for Bedrock. Adding --model with the correct versioned Bedrock ID in the instance config fixes the "model identifier is invalid" error.
11. sudo-tmoney29 commented on Nov 4, 2026

    

    sudo-tmoney29

    on Nov 4, 2026

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    @tijmenvangurp - Can you only use this for Anthropic models? In Bedrock, I have access to 155 endpoints. I am desiring to bring in 5-6-7, different models as council members to hill climb ideas.