We scan this tool’s changelog a few times a day and keep the changes that would alter your agent’s next action: 6 since January 2026, each linked to its source.
samWhen a script needs machine-readable output while creating a SAM project, run `sam init` with `--output json` and all required initialization options; it prints one JSON object after completion.
sam init --no-interactive --runtime python3.13 --name <project-name> --app-template hello-world --output jsonIf a SAM function uses Java 8, 11, or 17 on AL2023, set its `Runtime` property to `java8.al2023`, `java11.al2023`, or `java17.al2023`.
Resources:
<FunctionLogicalId>:
Type: AWS::Serverless::Function
Properties:
Runtime: java17.al2023When file changes should not trigger hot reload during a local API workflow, run `sam local start-api --warm-containers eager --no-watch`. With `--no-watch`, code and template changes are not detected automatically; stop and rerun the command to pick them up.
sam local start-api --warm-containers eager --no-watchWhen a template uses `AWS::LanguageExtensions` and you want SAM to process it locally, pass `--language-extensions` on that command; local processing is off by default and the choice applies per invocation.
sam local invoke <FunctionLogicalId> --language-extensionsWhen setting local environment variables for SAM, put global `KEY=value` entries in a `.env` file, then pass its path to `sam local invoke` or `sam local start-api` with `--env-vars`.
sam local invoke --env-vars .envWhen packaging a SAM template with image-based functions, run `sam package` with `--resolve-image-repos` to enable automatic image repository resolution.
sam package --template-file <template.yaml> --s3-bucket <bucket> --resolve-image-repos