Quickstart

pip install qwed-finance==3.0.1

npm install @qwed-ai/[email protected]
pip install qwed-finance==3.0.1

from qwed_finance import FinanceVerifier

verifier = FinanceVerifier()

# Cash flows: invest 1,000, then receive 300, 400, 500, 600. Discount rate 10%.
result = verifier.verify_npv(
    cashflows=[-1000, 300, 400, 500, 600],
    rate=0.10,
    llm_output="$388.77",  # the LLM's claim
)

if result.verified:
    print(f"Verified: {result.computed_value}")
else:
    print(f"Rejected: LLM said {result.llm_value}, QWED computed {result.computed_value}")
# Verified: $388.77

// Save as an .mjs file, or set "type": "module" in package.json,
// so Node.js accepts the import syntax and top-level await.
import { FinanceVerifier } from '@qwed-ai/finance';

const verifier = new FinanceVerifier();

try {
  const result = await verifier.verifyNPV([-1000, 300, 400, 500, 600], 0.1, '$388.77');

  if (result.verified) {
    console.log('Verified:', result.computed_value);
  } else {
    console.log('Rejected: QWED computed', result.computed_value);
  }
  // Verified: $388.77
} catch (err) {
  // Malformed inputs and bridge failures throw: treat them as "not verified".
  console.error('Verification failed closed:', err instanceof Error ? err.message : String(err));
}