What it does

  • Tells every agent, when its session starts: "Write or update a test that fails before you change behaviour, and run the tests before you say you are done. If you could not run them, say so."

Peregrini chose this publisher. It has not checked each rule. A book cannot vary the Mandate, and no instruction in it permits anything the Mandate reserves to your own permission lines. Its blocks are added to yours: where two books block different things, both apply. Where its instructions conflict with your own, the agent says so and asks.

The exact lines

instruction Write or update a test that fails before you change behaviour, and run the tests before you say you are done. If you could not run them, say so.
Version fingerprint

e179c2fa705f1a1a9a99128c6bb99fbaaaeeba42e6ef1e150562f5946a12565b

Versions

  1. Version 1 · 28 September 2026

    A starter book by Peregrini.

    Added: instruction Write or update a test that fails before you change behaviour, and run the tests before you say you are done. If you could not run them, say so.

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