Your business logic is a black box. Open it.

// claims-engine.ts
const anthropic = wrapAnthropic(new Anthropic());
const policiesCol = wrapCollection(db.collection('policies'));

async function assessClaim(claim: ClaimRequest) {
  // db span recorded automatically
  const policy = await policiesCol.findOne({ id: claim.policyId });

  // llm span recorded automatically
  const assessment = await anthropic.messages.create({
    model: 'claude-opus-4-8',
    messages: [{ role: 'user', content: buildPrompt(claim, policy) }],
  });

  if (claim.amount > 10_000) {
    because.addMessage(
      'High-value claim',
      `Claim of ${claim.amount.toLocaleString()} exceeds the $10,000 threshold - flagged for manual review before payout.`,
      { level: 'warn' },
    );
  }

  const items = parseAssessment(assessment, policy);
  because.addSpan('table', 'Damage breakdown', {
    output: because.table('Items assessed')
      .fromRecords(items)
      .highlightRows(r => r.excluded ? 'danger' : null)
      .appendRow([because.spanCell('Approved: $14,300', 3)], 'success')
      .build(),
  });

  return { approved: items.approved, rejected: items.rejected };
}