Harness Lab · 02
Spend drill: measure and cut
Mastery taught spend and cron. This lab only measures one job and cuts waste.
~20 min
Requires
Open Harness 06 (agency/spend intro); better after 09 if you have a cron
Assumes
Primary model already works. You are not choosing a provider for the first time.
If not ready: Harness 06: First agency →
Mastery owns the theory
01
Log primary
Model ID
02
Cheap task
Compare
03
Tighten cron
Runbook
04
Cut toolset
Or justify
Token tiers, tool catalogs, and cron-as-runbook are taught in Open Harness 06 and 09. Do not re-read a lecture here. Open those modules if the ideas are new.
06 Spend / tools intro → 11 Cron runbooks →Drill
Steps · tap to check0/4
Pass = measurement file. Fail = “I feel like it’s cheaper” with no log.
Outcome
spend-log.md with primary model ID, one timed cheap task, one tightened runbook (or cron prompt), one toolset disabled or justified.
Proof · this device0/4
Stored on this device only, not sent anywhere.