Wrangler

Wrangler is Cloudflare's command-line tool for building, deploying, and operating Workers projects and related Cloudflare developer-platform resources. It combines local dev and deployment flows with account-level commands for Pages, KV, D1, R2, Queues, versions, and log tails.

• Start local Worker or Pages dev flows, bundle code, generate types, and deploy new revisions from the shell.
• Inspect and change Cloudflare resources such as Worker versions and secrets, Pages projects and deployments, KV namespaces and keys, D1 databases and migrations, R2 buckets and objects, and Queues.
• Tail logs, list recent deployments, and capture deployment metadata for follow-up automation without switching to the dashboard.

• The command tree is broad and mostly non-interactive once auth and config are in place, so agents can drive inspect-change-verify loops directly from shell commands.
• Structured output is real but uneven: many read paths support --json or --format json, and deploy workflows can emit machine-readable event files, but some commands still default to tables or human text.
• Browser OAuth login, credential requirements, and a few prompt-heavy flows around setup, deploy, or version rollout mean unattended use works best with pre-provisioned API tokens and explicit flags.

• Wrangler is tightly coupled to Cloudflare account state and project config, so useful automation usually requires wrangler.jsonc plus account credentials.
• JSON coverage is not universal across the command tree, so some workflows still need carefully chosen commands or text parsing.