[Bug]: Cannot edit header name of api key in LLM configurations

[rasika2012]

Please select the area the issue is related to

Area/Agent Lifecycle (Agent create, configure, kinds, build, test, deploy, keys/tokens), Area/Infrastructure (Environments, deployment pipelines, infra resources, gateway integration), Area/LLM & MCP Governance (LLM providers, LLM proxy, MCP proxy, provider keys)

Please select the aspect the issue is related to

Aspect/Agent Configuration (Agent configuration, kinds, build options), Aspect/LLM & MCP (LLM providers, LLM proxy, provider keys, MCP proxy)

Description

$Subject

Steps to Reproduce

• Create Anthropic LLM Provider
• Configure it on an external app.
• Issue: Cannot edit headers.

The default Anthropic library sends the API key in the x-api-key header, which cannot be customized

Severity Level of the Issue

Severity/Blocker (Core functionality is broken and consumer is blocked. Need immediate attention)

Environment Details (with versions)

No response