What it is
pi-heed is a runtime constraint layer for the pi coding agent. It checks every side-effecting tool call against what the user actually asked for, before the call runs, and blocks calls that would violate the user's stated policy.
How it uses Jev
Jev classifies how each existing policy changed per message (KEEP/LIFT/NARROW/EXCEPTION/REPLACE/UNKNOWN), asks whether a message is the user's go-ahead to start changing things, and answers a few signals such as new prohibition, temporary permission, or new task. pi-heed applies only confident answers; resources come from the message, never from Jev.
Primitives:choice
Technique worth stealing
Ask about intent, not a taxonomy: a go-ahead question for lifts beat KEEP/LIFT/NARROW labels (71% to 93%).
Evidence
Each line is one question put to Jev about the README. ≥ 0.60 reads as yes, ≤ 0.40 as no; in between Jev is not making a call.
- Jev-centricyes0.74
- Shows a System One patternunclear0.52
- Handles uncertaintyno0.05
- Measuredno0.05
- Runnableyes0.77
- Worth recommendingno0.29
- Model replicano0.08
- Problem scopescore on a 0–2 scale1.31
- About Jevyes0.91
Signals by Jev jev-1.13.0, card written by DeepSeek V4.1 Flash from the README on 20 Sept 2026.