the score
two numbers. two different people see them.
Each person has a Canary Score that only they ever see. Each team of five or more has a Sustainable Capacity Index that leadership sees. One looks after the person. The other looks after the work.
for the person
the Canary Score
Seen only by them. Never by their employer.
for the team
the Sustainable Capacity Index
Teams of five or more. Seen by leadership.
two scores, side by side.
what your people see
The Canary Score. Try it: tap the canary, tick off a step.
Only the person sees it. Not their manager, not HR, not us.
what you see
The Sustainable Capacity Index. Try it: move the overtime and the focus time.
- Energy66
- Recovery60
- Workload balance58
- Focus time60
Silent strain detected
SCI 61, below this team's normal of 66. Try fewer overtime hours or more protected focus.
Team-level only · minimum 5 people · no individual data
Leadership sees it for teams of five or more, built from their Canary Scores.
what goes in.
mindthe core
Validated burnout, stress and resilience scales, and a short daily pulse.
body
Heart-rate variability against a personal baseline; sleep duration and regularity.
daily life
Activity and recovery from devices people already wear. [confirm nutrition with the methodology deck]
work
Hours, meeting load and focus time. Team-level only.
read together, against each person's own normal
one signal
The markers are public science. How they are read together is ours.
read against your own normal.
Canary doesn't compare your teams to a national average. It compares each team to itself, and flags a deviation that persists.
Product team · SCI by week
illustrativeIllustrative chart: the team's SCI sits inside its normal band of 66 to 72 for six weeks, then falls below it from week 8 and stays there to week 12. That persistent dip is flagged as silent strain.
the evidence, graded.
What is proven, what is emerging, and what we are still testing.
| input | what the research shows | how we use it |
|---|---|---|
| Heart-rate variability | moderate evidence, 2 of 3Predicts later exhaustion in prospective studies. | Kept, read against each person's own baseline. |
| Sleep duration and insomnia | moderate evidence, 2 of 3Short sleep predicts clinical burnout. | Kept. |
| Validated self-report scales | strong evidence, 3 of 3Strong for hard outcomes. | The core of the score. |
| Cortisol slope | very low evidence, 1 of 3Very low evidence; the relationship is non-linear. | Exploratory only. |
| hs-CRP | very low evidence, 1 of 3Very low evidence for burnout. | A context marker only. |
Some physiological signals, notably HRV and sleep, carry independent information about future exhaustion risk.
No study yet shows that body signals warn earlier than a validated questionnaire. That's why the mind signal is the core, and why we're validating the rest.
read the full evidence review: [evidence review PDF, with the reference list]
how we'll prove it.
1outcome
The onset of stress-related sick leave, or a clinical burnout cut-off.
2design
A pre-registered cohort over 12–24 months with EU employers, validated externally at a second employer.
3analysis
Does the body signal add anything to the mind signal? Weights are learned from the data, not fixed in advance.
Independent scientific review: [names to confirm].
who sees what.
the person
Their own Canary Score and the steps it suggests. No one else sees it.
the synergist
Team trends only, to plan what to do with the team.
leadership
Teams of five or more, never an individual.
Enforced in the database, not by the screen. Never used for performance reviews, promotion or dismissal.
read the architecture & data flow →- Engineering · 32 peopleTrends shown
- Sales · 18 peopleTrends shown
- Design · 4 peopleWithheld · under 5
- Finance · 7 peopleTrends shown
Enforced by row-level security in the database, not by the screen. No individual is ever listed.
act while there is still time.
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