[DOCS] Amazon Bedrock docs missing Mantle setup and `CLAUDE_CODE_USE_MANTLE` environment variable

Documentation Type

Missing documentation (feature not documented)

Documentation Location

https://code.claude.com/docs/en/amazon-bedrock

Section/Topic

Amazon Bedrock setup instructions, especially the ## Configure Claude Code section and related cloud-provider activation references.

Current Documentation

No documentation currently exists for Amazon Bedrock powered by Mantle or the CLAUDE_CODE_USE_MANTLE environment variable added in v2.1.94.

The Bedrock setup page currently documents only the existing Bedrock activation path:

Set the following environment variables to enable Bedrock: export CLAUDE_CODE_USE_BEDROCK=1 export AWS_REGION=us-east-1 # or your preferred region

The authentication page also describes Bedrock selection only in terms of CLAUDE_CODE_USE_BEDROCK:

Cloud provider credentials, when CLAUDE_CODE_USE_BEDROCK, CLAUDE_CODE_USE_VERTEX, or CLAUDE_CODE_USE_FOUNDRY is set.

The environment variable reference currently lists:

CLAUDE_CODE_USE_BEDROCK — Use Bedrock

The third-party integrations page only shows the existing Bedrock route as well:

Route Bedrock traffic through your LLM gateway by setting the following environment variables: export CLAUDE_CODE_USE_BEDROCK=1 export ANTHROPIC_BEDROCK_BASE_URL='https://your-llm-gateway.com/bedrock' export CLAUDE_CODE_SKIP_BEDROCK_AUTH=1 # If gateway handles AWS auth

What's Wrong or Missing?

Changelog v2.1.94 added a new user-facing Bedrock configuration path: Added support for Amazon Bedrock powered by Mantle, set CLAUDE_CODE_USE_MANTLE=1.

The current docs do not explain:

• when to use CLAUDE_CODE_USE_MANTLE=1 instead of CLAUDE_CODE_USE_BEDROCK=1
• whether Mantle uses the same AWS region, auth, and Bedrock base URL settings
• which existing Bedrock setup steps still apply to Mantle-backed deployments

Because the new selector is undocumented, users cannot discover or configure this new Bedrock mode from the docs alone.

Suggested Improvement

Add a Mantle-specific subsection to the Amazon Bedrock docs that covers:

• the exact enablement variable: CLAUDE_CODE_USE_MANTLE=1
• any prerequisites and companion settings required for Mantle-backed Bedrock
• how Mantle relates to the existing Bedrock configuration path (CLAUDE_CODE_USE_BEDROCK=1, AWS_REGION, ANTHROPIC_BEDROCK_BASE_URL, and CLAUDE_CODE_SKIP_BEDROCK_AUTH)
• whether users should follow the same /setup-bedrock flow or a different setup path

Also update the environment-variable and authentication/deployment overview pages so they mention the new Mantle-backed Bedrock option and link back to the Bedrock setup page.

Impact

High - Prevents users from using a feature

Additional Context

Affected Pages:

| Page | Context |
|------|---------|
| https://code.claude.com/docs/en/amazon-bedrock | Primary Bedrock setup page only documents CLAUDE_CODE_USE_BEDROCK=1 |
| https://code.claude.com/docs/en/authentication | Cloud-provider setup and credential precedence mention CLAUDE_CODE_USE_BEDROCK but not Mantle |
| https://code.claude.com/docs/en/env-vars | Env var reference lists CLAUDE_CODE_USE_BEDROCK but no CLAUDE_CODE_USE_MANTLE |
| https://code.claude.com/docs/en/third-party-integrations | Bedrock deployment and gateway examples only show the existing Bedrock activation path |

Total scope: 4 pages affected

Source: Changelog v2.1.94

Exact changelog entry: Added support for Amazon Bedrock powered by Mantle, set CLAUDE_CODE_USE_MANTLE=1