> ## Documentation Index
> Fetch the complete documentation index at: https://docs.atconseil.info/llms.txt
> Use this file to discover all available pages before exploring further.

# Quality Gate — grade & GO/NO-GO

> Every report carries an A–E grade, a 0–100 score and a GO/NO-GO verdict — deterministic, transparent, never an opaque number.

Every report carries a **quality score** graded **A → E** with a **0–100** value and a **GO / NO-GO** verdict — in the report header, the dashboard widget and the PDF / HTML exports. It is computed by a **single deterministic engine** from the data already on screen: no extra API call, no AI. The badge summarises the metrics; it never replaces them.

## How the grade is built

The 0–100 composite weighs four components:

| Component             | Weight |
| --------------------- | ------ |
| Pass rate             | 40     |
| Execution rate        | 20     |
| Requirements coverage | 20     |
| Defect hygiene        | 20     |

Grades: **A** ≥ 90 · **B** 75–89 · **C** 60–74 · **D** 40–59 · **E** \< 40.

When traceability is absent, coverage is dropped and the remaining weights are **renormalised** (a flag says so). Fewer than 5 executed tests raises a *low confidence* flag.

## Transparency

Click **Show details** to expand the breakdown — each component (value, points, weight), the caps applied and any flags. The score is never an opaque number.

## Non-negotiable invariants

* **≥ 1 open blocking bug** (open + Critical / High) caps the grade at **C** and forces **NO-GO**.
* An **untested in-scope requirement** forces **NO-GO**.
* **No executed test** shows *not evaluated* — never an E.
* **GO** also requires the score ≥ 75 and coverage ≥ 70%.

## Scale profiles

In Settings, choose a **project-level** scale so everyone scores a report identically:

* **Strict** — a regulated release.
* **Standard** — the default scale.
* **Ramp-up** — a starting team.

Tuning is **bounded** (GO threshold 50–95, a minimum coverage, component weights forced to sum to 100, A > B > C > D thresholds); any off-preset value becomes a **Custom** scale. The invariants above always hold.

## Risk-based weighting (optional)

An optional, orthogonal toggle shows a **weighted confidence** beside the grade. It weights execution and coverage by the **importance** of what is missing — test-case priority, story risk and story points — using transparent **additive tiers** (never a multiplication). The flat A–E score is **never** altered; a dimension whose data is absent or uniform auto-disables and says so.

## Related

<CardGroup cols={2}>
  <Card title="Decision support" icon="circle-check-big" href="/en/quality/decision-support">Watch points, failures without a defect, override.</Card>
  <Card title="Coverage depth" icon="gauge" href="/en/quality/coverage-depth">Is it *well* covered?</Card>
</CardGroup>