METRICL2 · Pillar Health

Pillar Staleness Index

Days since the most recent modification across all artifacts linked to a pillar.

Abbreviation
PSI
Layer
L2 · Pillar Health
Range
integer (days)
Scope
per pillar

Formula

PSIformula
PSI = days since max(modifiedAt)
      across all artifacts
      linked to this pillarId

Thresholds

< 90 days

Fresh

90–180 days

Ageing

> 180 days

Stale

Reading it

A pillar that has not been touched in 200 days is either perfectly stable or quietly abandoned. PSI does not tell you which — but it tells you the question is worth asking. Without PSI, both states look identical from the outside.

Combined with PCR, PSI is the disambiguation signal. A stable-PCR pillar with high PSI is probably fine: the rules have not changed because they are correct, and teams are following them. A declining-PCR pillar with high PSI means no one is responding to the drift — the governance is stale and failing simultaneously. That combination is not ambiguous: it requires intervention.

PSI surfaced in isolation is rarely alarming. PSI read alongside PCR, PDT, and PDRP separates the healthy-dormant pillar from the neglected one. The number is a timestamp in disguise: the last time anyone confirmed this domain was still governed.

How rkito produces it

  1. 01

    Collect all artifacts linked to this pillar

    Lenses, Policies, Best Practices, and Patterns with a matching pillarId

  2. 02

    Read modifiedAt on each artifact

    rkito stores a modifiedAt timestamp on every artifact update

  3. 03

    Select the most recent timestamp

    max(modifiedAt) across all linked artifacts is the last known governance activity for this pillar

  4. 04

    Compute PSI

    PSI = today − max(modifiedAt), expressed in whole days

  5. 05

    Navigate for detail

    Open the pillar at /steerings/pillars, then review linked Lenses at /steerings/lenses filtered by pillarId

How it misleads

What to do at each threshold

Step-by-step response playbook for each signal state.

Green< 90 daysNo action required

Pillar artifacts have been modified recently. No action required. Confirm that PCR is stable to close the loop.

Yellow90–180 daysPrompt a review

Contact the pillar owner and prompt them to schedule a review of their domain artifacts. This is a soft check-in, not an escalation — confirm the governance is still current before the pillar crosses 180 days.

Red> 180 daysConfirm or archive

Navigate to the pillar, confirm or update artifacts, or open a CHI to archive if the domain is no longer relevant.

  1. Navigate to /steerings/pillars, open the pillar, and update at least one artifact to confirm it is still active. A "reviewed and confirmed accurate" touch is valid where content is correct.
  2. If the pillar is no longer relevant, open a CHI to archive it. A stale pillar whose Lenses are still running evaluations is producing conformance data against rules that may no longer reflect architectural intent.

When was your last pillar touched?

rkito computes PSI automatically from modifiedAt timestamps across all pillar artifacts. Know which domains are dormant — and which are failing silently — from day one.