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

# Fixed Income Examples

> Bond pricing and yield curve examples

# Fixed Income Examples

Price bonds, build yield curves, calculate duration.

## Bond Pricing

```python theme={null}
response = requests.post(
    "https://api.fincept.in/quantlib/instruments/fixed-bond",
    headers={"X-API-Key": API_KEY},
    json={
        "face_value": 1000,
        "coupon_rate": 0.05,
        "maturity_date": "2029-01-15",
        "settlement_date": "2024-01-15",
        "frequency": 2,
        "yield": 0.04
    }
)
```

**Cost:** 2 credits

## Yield Curve Construction

```python theme={null}
response = requests.post(
    "https://api.fincept.in/quantlib/curves/zero-curve",
    headers={"X-API-Key": API_KEY},
    json={
        "dates": ["2024-01-15", "2024-07-15", "2025-01-15", "2026-01-15"],
        "rates": [0.02, 0.025, 0.03, 0.035],
        "interpolation": "linear"
    }
)
```

**Cost:** 2 credits

[More examples →](/quickstart)