# Kelley Blue Book API

> Kelley Blue Book returns car values and reviews as a workflow and API.

Kelley Blue Book (KBB) Get car value estimates trade-in and private-party values using a car, mileage, and ZIP code. Get car review returns ratings, pricing, fuel economy, pros, and cons using a year, make, and model.

- Page: https://fous.com/workflows/kelley-blue-book
- Handle: `@kelley-blue-book`
- Category: [Commerce](https://fous.com/workflows/category/commerce)
- Source website: https://kbb.com
- Last verified: Sep 28, 2026
- Fous is not affiliated with Kelley Blue Book.

## Methods

### Get car review

Operation `get_car_review`, version 1. 1 credit per call.

Get KBB ratings, pricing, fuel economy, pros, cons, and expert review for a car model. Some details are unavailable for certain model years.

**Input**

| Field | Type | Required | Example | Description |
|---|---|---|---|---|
| `car` | string | yes | `"2024 Toyota Camry"` | The year, make and model, for example 2024 Honda CR-V. |

**Input schema**

```json
{
  "type": "object",
  "required": [
    "car"
  ],
  "properties": {
    "car": {
      "type": "string",
      "description": "The year, make and model, for example 2024 Honda CR-V.",
      "examples": [
        "2024 Toyota Camry",
        "2024 Honda CR-V",
        "2025 Toyota Camry"
      ]
    }
  },
  "additionalProperties": false,
  "examples": [
    {
      "car": "2024 Toyota Camry"
    },
    {
      "car": "2024 Honda CR-V"
    },
    {
      "car": "2025 Toyota Camry"
    }
  ]
}
```

**Output**

| Field | Type | Example | Description |
|---|---|---|---|
| `cons` | array |  |  |
| `pros` | array |  |  |
| `trims` | array |  |  |
| `trims[].name` | string | `"LE Sedan 4D"` |  |
| `trims[].starting_price_usd` | number | `27515` |  |
| `car_name` | string | `"2024 Toyota Camry"` |  |
| `currency` | string | `"USD"` |  |
| `page_url` | string | `"https://www.kbb.com/toyota/camry/2024/"` |  |
| `fuel_economy` | string or null | `"28 city / 39 highway MPG"` |  |
| `expert_rating` | number or null | `4.6` | KBB expert rating out of 5. |
| `consumer_rating` | number or null | `3.9` | Consumer rating out of 5. |
| `starting_price_usd` | number or null | `27515` | Starting MSRP in USD, original MSRP for used cars. |
| `consumer_review_count` | integer or null | `350` |  |
| `expert_verdict_summary` | string or null | `"We might as well come straight out with it — we really, really like the Honda CR-V. It does virtually everything right.` |  |
| `fair_purchase_price_usd` | number or null | `23900` | KBB Fair Purchase Price in USD for the base trim. |
| `five_year_cost_to_own_usd` | number or null | `50170` |  |

**Example input**

```json
{
  "car": "2024 Toyota Camry"
}
```

**Example output**

```json
{
  "cons": [
    "Due for a revamp"
  ],
  "pros": [
    "Dependable and roomy",
    "Strong resale values",
    "Available all-wheel drive"
  ],
  "trims": [
    {
      "name": "LE Sedan 4D",
      "starting_price_usd": 27515
    },
    {
      "name": "SE Sedan 4D",
      "starting_price_usd": 29055
    },
    {
      "name": "SE Nightshade Edition Sedan 4D",
      "starting_price_usd": 30055
    }
  ],
  "car_name": "2024 Toyota Camry",
  "currency": "USD",
  "page_url": "https://www.kbb.com/toyota/camry/2024/",
  "fuel_economy": "28 city / 39 highway MPG",
  "expert_rating": 4.6,
  "consumer_rating": 3.9,
  "starting_price_usd": 27515,
  "consumer_review_count": 350,
  "expert_verdict_summary": "It might seem odd to recommend the Toyota Camry as an antidote to boredom, but that’s where we are. Midsize sedans were once seen as rather vanilla, but as an alternative to the ubiquitous SUV, cars l…",
  "fair_purchase_price_usd": 23900,
  "five_year_cost_to_own_usd": null
}
```

### Get car value

Operation `get_car_value`, version 1. 1 credit per call.

Estimate a used car’s trade-in and private-party values and ranges for its mileage, ZIP code, trim, and condition. Dealer retail and fair purchase prices are included only when available.

**Input**

| Field | Type | Required | Example | Description |
|---|---|---|---|---|
| `car` | string | yes | `"2020 Honda Civic"` | Year, make and model, for example 2019 Toyota Camry. |
| `trim` | string | no | `"EX"` | Trim name, for example SE; defaults to KBB’s selected trim. |
| `mileage` | integer | yes | `60000` | Odometer mileage in miles, for example 45000. |
| `zip_code` | string | yes | `"90210"` | Five-digit US ZIP code, for example 30301. |
| `condition` | string | no | `"excellent"` | Car condition, for example good; defaults to good. |

**Input schema**

```json
{
  "type": "object",
  "required": [
    "car",
    "mileage",
    "zip_code"
  ],
  "properties": {
    "car": {
      "type": "string",
      "description": "Year, make and model, for example 2019 Toyota Camry.",
      "examples": [
        "2020 Honda Civic",
        "2019 Toyota Camry"
      ]
    },
    "trim": {
      "type": "string",
      "default": "",
      "description": "Trim name, for example SE; defaults to KBB’s selected trim.",
      "examples": [
        "EX"
      ]
    },
    "mileage": {
      "type": "integer",
      "minimum": 0,
      "description": "Odometer mileage in miles, for example 45000.",
      "examples": [
        60000,
        45000
      ]
    },
    "zip_code": {
      "type": "string",
      "description": "Five-digit US ZIP code, for example 30301.",
      "examples": [
        "90210",
        "30301"
      ]
    },
    "condition": {
      "enum": [
        "excellent",
        "very_good",
        "good",
        "fair"
      ],
      "type": "string",
      "default": "good",
      "description": "Car condition, for example good; defaults to good.",
      "examples": [
        "excellent"
      ]
    }
  },
  "additionalProperties": false,
  "examples": [
    {
      "car": "2020 Honda Civic",
      "trim": "EX",
      "mileage": 60000,
      "zip_code": "90210",
      "condition": "excellent"
    },
    {
      "car": "2019 Toyota Camry",
      "mileage": 45000,
      "zip_code": "30301"
    }
  ]
}
```

**Output**

| Field | Type | Example | Description |
|---|---|---|---|
| `car` | string | `"2020 Honda Civic"` |  |
| `trim` | string | `"EX Sedan 4D"` |  |
| `mileage` | integer | `60000` |  |
| `currency` | string | `"USD"` |  |
| `condition` | string | `"excellent"` |  |
| `page_link` | string | `"https://www.kbb.com/honda/civic/2020/ex-sedan-4d/?vehicleid=445358&mileage=60000&zipcode=90210&intent=trade-in-sell&pri` |  |
| `trade_in_value` | number or null | `16020` | USD amount. |
| `valuation_date` | string or null | `"2026-09-28"` |  |
| `trade_in_range_low` | number or null | `14770` | USD amount. |
| `dealer_retail_value` | number or null |  | USD amount. |
| `fair_purchase_price` | number or null |  | USD amount. |
| `private_party_value` | number or null | `19480` | USD amount. |
| `trade_in_range_high` | number or null | `17270` | USD amount. |
| `private_party_range_low` | number or null | `18330` | USD amount. |
| `private_party_range_high` | number or null | `20680` | USD amount. |

**Example input**

```json
{
  "car": "2020 Honda Civic",
  "trim": "EX",
  "mileage": 60000,
  "zip_code": "90210",
  "condition": "excellent"
}
```

**Example output**

```json
{
  "car": "2020 Honda Civic",
  "trim": "EX Sedan 4D",
  "mileage": 60000,
  "currency": "USD",
  "condition": "excellent",
  "page_link": "https://www.kbb.com/honda/civic/2020/ex-sedan-4d/?vehicleid=445358&mileage=60000&zipcode=90210&intent=trade-in-sell&pricetype=trade-in&condition=excellent",
  "trade_in_value": 16020,
  "valuation_date": "2026-09-28",
  "trade_in_range_low": 14770,
  "dealer_retail_value": null,
  "fair_purchase_price": null,
  "private_party_value": 19480,
  "trade_in_range_high": 17270,
  "private_party_range_low": 18330,
  "private_party_range_high": 20680
}
```

## Quick start

Call the API with a Fous API key (`FOUS_API_KEY`). To create one, turn on Developer mode in Fous Studio, then open Keys & connections → API keys (https://app.fous.com/keys).

```bash
# First set your key: export FOUS_API_KEY='YOUR_FOUS_API_KEY'
: "${FOUS_API_KEY:?Set FOUS_API_KEY before running this example}"

curl 'https://api.fous.com/v1/query' \
  --fail-with-body --silent --show-error --max-time 120 \
  -H "Authorization: Bearer $FOUS_API_KEY" \
  -H 'Content-Type: application/json' \
  --data-raw '{
  "api": "@kelley-blue-book",
  "visibility": "public",
  "operation": "get_car_review",
  "version": 1,
  "input": {
    "car": "2024 Toyota Camry"
  },
  "response": {
    "format": "json"
  }
}'
```

```python
# Save as fous.py and run with python3 fous.py. No packages needed.
# First set your key: export FOUS_API_KEY='YOUR_FOUS_API_KEY'
import json
import os
import urllib.error
import urllib.request

api_key = os.environ.get("FOUS_API_KEY")
if not api_key:
    raise RuntimeError("Set FOUS_API_KEY before running this example")

body = json.loads("{\n  \"api\": \"@kelley-blue-book\",\n  \"visibility\": \"public\",\n  \"operation\": \"get_car_review\",\n  \"version\": 1,\n  \"input\": {\n    \"car\": \"2024 Toyota Camry\"\n  },\n  \"response\": {\n    \"format\": \"json\"\n  }\n}")
request = urllib.request.Request(
    "https://api.fous.com/v1/query",
    data=json.dumps(body).encode("utf-8"),
    headers={
        "Authorization": f"Bearer {api_key}",
        "Content-Type": "application/json",
    },
    method="POST",
)
try:
    with urllib.request.urlopen(request, timeout=120) as response:
        result = json.load(response)
except urllib.error.HTTPError as error:
    raise RuntimeError(f"HTTP {error.code}: {error.read().decode('utf-8', errors='replace')}") from error
if result.get("success") is False:
    raise RuntimeError(result.get("error", {}).get("message", "Request failed"))
print(json.dumps(result["data"]["output"], indent=2))
```

```typescript
// Save as fous.mts and run with npx tsx fous.mts.
// First set your key: export FOUS_API_KEY='YOUR_FOUS_API_KEY'
const apiKey = process.env.FOUS_API_KEY;
if (!apiKey) throw new Error("Set FOUS_API_KEY before running this example");

const response = await fetch("https://api.fous.com/v1/query", {
  method: "POST",
  headers: {
    "Authorization": `Bearer ${apiKey}`,
    "Content-Type": "application/json",
  },
  signal: AbortSignal.timeout(120_000),
  body: JSON.stringify({
  "api": "@kelley-blue-book",
  "visibility": "public",
  "operation": "get_car_review",
  "version": 1,
  "input": {
    "car": "2024 Toyota Camry"
  },
  "response": {
    "format": "json"
  }
}),
});
type ApiResult = { success: boolean; data?: { output: unknown }; error?: { message: string } };
const result: ApiResult = await response.json();
if (!response.ok || result.success === false) {
  throw new Error(result.error?.message ?? `HTTP ${response.status}`);
}
if (!result.data) throw new Error("Missing API response data");
console.log(result.data.output);
```

Or describe the data in plain language: send `{"api":"@kelley-blue-book","prompt":"Describe the data you need, with every detail"}` to the same URL. Fous fills in the input, runs the method that fits and returns only the fields you asked for; `data.route.calls[].request` is the exact call it made. Routing is free; the run costs the same.

## Use cases

- Compare trade-in and private-party values by mileage and ZIP code
- Estimate a car’s value for a chosen condition
- Review ratings, fuel economy, pros, and cons by car model
- Compare starting prices across available trims
- Assess a model’s fair purchase price and five-year ownership cost

## FAQ

### Is Fous affiliated with Kelley Blue Book?

No. Fous is not affiliated with Kelley Blue Book. This workflow reads the public kbb.com website and returns its data.

### How much does it cost?

Each run costs 1 credit. With pay-as-you-go, a credit costs 1¢; monthly plans cost less per credit.

### Do I need a Kelley Blue Book account?

No. You only need a Fous account.

### How current is the data?

Fous gets the data from kbb.com when you run it; repeating the same request within a day may return the saved result. Fous checks this workflow automatically; it last passed a check on Sep 28, 2026.

### What is a car’s estimated trade-in value?

Get car value estimates a trade-in value and range using the car, mileage, and ZIP code.

### What is a car’s private-party value?

Get car value estimates a private-party value and low-to-high range using the car, mileage, and ZIP code.

### What are a car model’s ratings and fuel economy?

Get car review returns available ratings and fuel economy, along with pricing, pros, cons, and expert review.

## Related

- [CarGurus API](https://fous.com/workflows/cargurus.md): CarGurus helps shoppers browse dealer-listed new and used cars with deal ratings, and view average used prices, price ranges and 12-month price history by model year.
- [Cars.com API](https://fous.com/workflows/cars-com.md): Cars.com finds car listings by make, model, and U.S. ZIP code, and provides dealerships’ latest customer reviews when available.
- [Autotrader API](https://fous.com/workflows/autotrader.md): Search new, used and certified cars for sale across the United States.
- [Carvana API](https://fous.com/workflows/carvana.md): Search used vehicles for sale on Carvana.
- [CarMax API](https://fous.com/workflows/carmax.md): Search public CarMax used-car listings.
- [Carfax API](https://fous.com/workflows/carfax.md): Carfax provides used-car listings near a US ZIP code with free history highlights, plus open safety recalls reported by CARFAX for a VIN or US plate.
- [FuelEconomy.gov API](https://fous.com/workflows/fueleconomy-gov.md): FuelEconomy.gov provides official vehicle fuel economy ratings, driving range, emissions, five-year savings, and annual fuel costs based on current fuel prices and EPA’s 15,000-mile annual driving assumption.
- [NHTSA API](https://fous.com/workflows/nhtsa.md): NHTSA provides vehicle details, model-level recalls, 5-Star Safety Ratings, owner complaints, and listed car, SUV, and truck models; data may be missing, and recalls do not confirm repairs.
- [All Commerce workflows](https://fous.com/workflows/category/commerce)