Checkly CLI is the official command-line workflow from Checkly for writing and deploying synthetic monitoring as code. The upstream repository is checkly/checkly-cli, and the official docs describe it as a JavaScript and TypeScript native workflow for coding, testing, and deploying monitoring at scale. Its practical job-to-be-done is clear: an agent can scaffold monitoring, log into a Checkly account, run checks locally, and deploy API checks and browser checks directly from a repository. Because the CLI has native @playwright/test support, it fits especially well when a team already has browser automation or end-to-end coverage and wants to turn those checks into ongoing production monitoring.

For ASE, this is a strong source-backed intake candidate because the project has an official GitHub repository, public documentation, tagged releases through GitHub, a permissive Apache 2.0 license, and recent maintenance activity. The docs also give concrete commands for getting started, including npx checkly init, npx checkly login, npx checkly test, and npx checkly deploy. That means an agent can do more than merely describe the platform, it can guide setup, validate checks in CI, and reason about monitoring deployments in a repeatable way. Checkly CLI is a good fit for reliability workflows, release verification, synthetic smoke tests, and browser journey monitoring where the underlying checks should be versioned, reviewed, and shipped like code.