Quality gates

Level: Application

Outcome

Convert a versioned eval suite into a deployment decision with explicit thresholds, critical-case rules, and artifacts that reviewers can inspect.

When to use it

Use a gate for prompt, model, retrieval, tool, or SDK changes. A gate should protect a defined product risk, not optimize a single aggregate score.

Setup

Install @anvia/core and the provider packages required by the target and judge. Store the cases and gate policy in version control, and configure CI secrets only for the job that runs model-backed metrics.

Gate flow

candidate build -> eval suite -> metric outcomes -> application gate policy
                                               |-> pass: deploy eligible
                                               `-> fail: artifact + review

Suite and policy boundaries

const result = await runEvalSuite(supportSuite);

const criticalIds = new Set(["refund-window", "account-deletion"]);
const criticalFailure = result.results.some((caseResult) =>
  criticalIds.has(caseResult.case.id) &&
  caseResult.metrics.some((metric) => metric.outcome.outcome !== "pass"),
);

const evaluated = result.metrics.passed + result.metrics.failed;
const passRate = evaluated === 0 ? 0 : result.metrics.passed / evaluated;
const gatePassed = !criticalFailure && result.metrics.invalid === 0 && passRate >= 0.95;

await writeArtifact({
  suite: result.name,
  runId: result.run.id,
  totals: result.metrics,
  passRate,
  gatePassed,
});

if (!gatePassed) process.exitCode = 1;

writeArtifact, the thresholds, critical cases, and deployment response are application/CI policy. Anvia runs the suite and returns results; it does not decide what your organization may deploy.

Expected behavior and failures

A critical-case failure blocks regardless of aggregate score. Invalid outcomes block because the suite lacks evidence. The job publishes a compact summary plus detailed case results for diagnosis. An evaluator outage should be distinguishable from a candidate quality regression.

Run the gate as a CI command and upload its JSON artifact even when it exits nonzero. The release job should depend on this command rather than reinterpreting console output.

Production adaptations

Compare the candidate with a pinned baseline, require a minimum sample size, slice by locale and capability, and define a maximum regression per slice. Keep cost and latency budgets beside quality. Use staged rollout and live monitoring because offline evals cannot cover all traffic.

Security and ownership

Protect eval datasets and artifacts like production data. Do not expose hidden expected answers to the agent prompt. Restrict who may change thresholds, judge prompts, and critical-case membership; review those changes as carefully as product code.

Tests

Test the gate function using fabricated suite results: all pass, one critical fail, noncritical regression, invalid-only, and zero evaluated metrics. Add negative controls to the eval dataset and verify they fail before trusting the gate.

Source and extensions

• Start with 08_evals/01-basic-metrics.ts.
• Use Lens quality gates when Lens manages the reporting workflow.
• Extend with baseline comparison, confidence intervals, cost ceilings, and manual override audit logs.