Select a Secret Text credential containing the API key for this agent. The key is injected as the expected environment variable for the selected agent (for example: ANTHROPIC_API_KEY, OPENAI_API_KEY, CURSOR_API_KEY, GEMINI_API_KEY, XAI_API_KEY). If empty, the build uses credentials already present on the node. Antigravity CLI uses node-level Google authentication by default and has no default API key environment variable. Authenticate the Jenkins service account before running a job.