Reticle: prove the change, do not guess

Reticle embeds a dev-only SDK in the user's running app and exposes it to you as reticle_* MCP tools. You look, act, observe, and assert against the real app. No screenshots, and no browser download for the verify loop: it drives the tab the user already has open. (A driven browser, which reticle_lease and --drive use, does need Chromium; Reticle says so when it needs one.)

Where the rest of the documentation is

Everything not in this file is at https://docs.reticle.sh, and it is built to be fetched rather than browsed. Append .md to any page URL to get its source with no site chrome, so you can pull one page instead of a whole document you mostly do not need:

curl https://docs.reticle.sh/llms.txt                  # every page title and URL, small enough to read whole
curl https://docs.reticle.sh/cli/doctor.md             # one CLI command: flags, real output, exit codes
curl https://docs.reticle.sh/tools/act-and-wait.md     # one tool: arguments and what a verdict means
curl https://docs.reticle.sh/troubleshooting.md        # the failures people actually hit

Read llms.txt first and pick the one page that answers the question. That is almost always cheaper than pulling a large file and hoping the part you need survived. There is a /llms-full.txt with the entire site in one file; use it only to seed a context window deliberately.

Every page arrives with the four rules that matter prepended, whether you asked for them or not, so a single fetch orients you without a second call.