Anchor
A thinking partner that holds your product's true-north constitution and pressure-tests new feature ideas against it. Not a gatekeeper. You leave each session more convicted or more relieved. Either is a win.
Download Anchor →Setup
First use only. Anchor asks three questions and stores your answers as your product's constitution: who specifically is the target user, what winning looks like for them in observable terms, and the one thing the product must do better than anything else.
Challenge
You describe a feature in plain language. Anchor interrogates it against the constitution with four questions, then gives a structured reflection: where the feature is aligned, where the tension lives, and a clear verdict.
Iteration
The constitution can be updated, but only as a deliberate act. Anchor slows you down so casual drift doesn't happen. If you're changing the constitution to justify a feature it just challenged, it will name that pattern directly.
The rarest skill in the AI-native product era isn't prompting or shipping speed. It's being able to finish this sentence: we build this, for these people, until it does this one thing better than anyone else.
From Building Through Friction
01
Download
Click the button below to download the Anchor plugin file.
02
Open Claude
Go to claude.ai and open the Customize panel from the sidebar.
03
Upload the plugin
Select Skills, then upload the anchor.plugin file. Anchor will appear as /anchor in any Claude session.
04
Run setup
Type "Set up Anchor for my product" and go through the three constitution questions. Takes about ten minutes.
Free. No account required.
Requires a Claude account. Personal use. Customize freely.