search_issues and search_events fail with "OPENAI_API_KEY required" when using Anthropic provider #747

Environment

• Package: @sentry/mcp-server (installed globally via npm at /opt/homebrew/lib/node_modules/@sentry/mcp-server)
• Transport: stdio mode via Claude Desktop
• OS: macOS (Apple Silicon)
• Node: Homebrew Node.js (/opt/homebrew/bin/node)
• Sentry: SaaS (sentry.io), organization panther-labs

Steps to Reproduce

1. Configure MCP server with Anthropic as the LLM provider:

{
  "mcpServers": {
    "Sentry": {
      "command": "/opt/homebrew/bin/node",
      "args": [
        "/opt/homebrew/lib/node_modules/@sentry/mcp-server/dist/index.js"
      ],
      "env": {
        "SENTRY_ACCESS_TOKEN": "sntryu_xxx",
        "SENTRY_HOST": "HOST.sentry.io",
        "EMBEDDED_AGENT_PROVIDER": "anthropic",
        "ANTHROPIC_API_KEY": "sk-ant-api03-xxx"
      }
    }
  }
}

2. Connect via Claude Desktop
3. Call search_issues or search_events with any natural language query

Expected Result

Based on the README documentation stating EMBEDDED_AGENT_PROVIDER supports 'openai' or 'anthropic', the semantic search tools should use Anthropic for query translation when configured with EMBEDDED_AGENT_PROVIDER=anthropic and a valid ANTHROPIC_API_KEY.

Actual Result

Both search_issues and search_events immediately fail with:

Configuration Error
There appears to be a configuration issue with your setup.
OPENAI_API_KEY environment variable is required for semantic search
Please check your environment configuration and try again.

Other tools work correctly (find_organizations, find_projects, find_releases, get_issue_details), confirming the SENTRY_ACCESS_TOKEN and general MCP connectivity are fine.