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fabro provider login

Re-authenticating with LLM providers previously required re-running the full fabro install wizard. You can now re-authenticate with any provider independently using fabro provider login. 
fabro provider login --provider openai
For OpenAI, this launches the browser-based OAuth PKCE flow with an automatic fallback to manual API key entry. All other providers prompt for an API key with validation. Credentials are merged non-destructively into ~/.fabro/.env.

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Auto-detect default LLM provider

The CLI now checks which providers have API keys configured and automatically selects the best available one, using precedence order Anthropic > OpenAI > Gemini. Previously, running commands without an explicit --provider flag always defaulted to Anthropic, which caused errors for users who only had OpenAI or Gemini keys configured.

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More

  • Default Anthropic model changed from claude-opus-4-6 to claude-sonnet-4-6
  • Removed OpenSSL runtime dependency — the CLI binary no longer dynamically links against libssl or libcrypto, so it runs on machines without OpenSSL v3 installed
  • Added --web-url flag to fabro install for specifying the web UI base URL for OAuth callbacks
  • Cloud sandbox pre-run checks now properly verify git sync status and warn about uncommitted changes before remote runs
  • fabro doctor no longer shows false connectivity warnings when using the ChatGPT/Codex backend
  • repo init detects GitHub App visibility mismatches and warns when cross-owner installs require the app to be public
  • Fixed OAuth callback URLs missing from CLI-generated GitHub App manifests, which caused OAuth login failures in the web UI
  • Fixed OpenAI multi-turn conversations failing because store: false was incorrectly set for all Responses API requests instead of only the Codex endpoint