You need to ship a C# integration that fetches live fuel prices by ZIP code, with reliable units and predictable authentication. By the end of this guide, you’ll query the Gasoline Prices API on Zyla API Hub from C#, parse the JSON, and be ready to plug the data into your checkout, fleet dashboard, or routing logic.
What the Gasoline Prices API delivers
The Gasoline Prices API returns fuel price information for relevant gas stations in a given ZIP code and supports a station-level data lookup. It’s ideal for applications that need to display or compare local fuel costs, calculate trip expenses, or keep budgets current for logistics and on-the-road services.
Zyla API Hub centralizes authentication (one account, one API key) and billing across more than 10,000 public APIs. The Gasoline Prices API uses an Authorization: Bearer token in every request and provides subscription + quota-based access (not pay-per-call). For first-time use, you get either a 7-day trial or 50 requests to validate your integration. There is no Free Plan; check the API page for current access options and pricing.
Getting started on Zyla API Hub
Here’s the minimal process to get your key and call the endpoints:
- Open the API listing: Gasoline Prices API.
- Click Subscribe (or Start Free Trial when available) and complete the flow to obtain your API key.
- Use the key with an Authorization: Bearer header when calling the endpoints under https://zylalabs.com/api/…
If you don’t have a Zyla account yet, you can quickly create one here: Register. You can also explore other categories on Zyla API Hub at any time.
Endpoints you’ll use
The Gasoline Prices API provides two documented endpoints via Zyla API Hub:
1) Prices (GET)
Request URL:
https://zylalabs.com/api/3927/gasoline-prices-api/4649/prices
Description: Pass the ZIP code of your choice and the type of fuel you want to check. The API returns prices of relevant gas stations in the given ZIP. If no information is available for a station, you can use its ID in the Station Data endpoint.
Required query parameters:
- zip (string): example 90001
- type (string): example regular
Authentication: Authorization: Bearer YOUR_API_KEY
Official cURL example (copy/paste):
curl -s -X GET "https://zylalabs.com/api/3927/gasoline-prices-api/4649/prices?zip=90001&type=regular" \
-H "Authorization: Bearer YOUR_API_KEY"Official JSON response (verbatim):
{"success":true,"result":[{"currency":"usd","name":"Alaska","gasoline":"3.312","midGrade":"3.549","premium":"3.776","diesel":"3.541"},{"currency":"usd","name":"Alabama","gasoline":"2.804","midGrade":"3.242","premium":"3.640","diesel":"3.471"},{"currency":"usd","name":"Arkansas","gasoline":"2.779","midGrade":"3.192","premium":"3.570","diesel":"3.323"},{"currency":"usd","name":"Arizona","gasoline":"3.155","midGrade":"3.485","premium":"3.803","diesel":"3.643"},{"currency":"usd","name":"California","gasoline":"4.449","midGrade":"4.679","premium":"4.852","diesel":"4.996"},{"currency":"usd","name":"Colorado","gasoline":"2.984","midGrade":"3.367","premium":"3.688","diesel":"3.417"},{"currency":"usd","name":"Connecticut","gasoline":"3.097","midGrade":"3.718","premium":"4.063","diesel":"3.845"},{"currency":"usd","name":"District of Columbia","gasoline":"3.279","midGrade":"3.866","premium":"4.254","diesel":"3.918"},{"currency":"usd","name":"Delaware","gasoline":"3.203","midGrade":"3.718","premium":"4.016","diesel":"3.772"},{"currency":"usd","name":"Florida","gasoline":"3.217","midGrade":"3.655","premium":"3.970","diesel":"3.676"},{"currency":"usd","name":"Georgia","gasoline":"2.966","midGrade":"3.404","premium":"3.801","diesel":"3.663"},{"currency":"usd","name":"Hawaii","gasoline":"4.555","midGrade":"4.794","premium":"5.040","diesel":"5.307"},{"currency":"usd","name":"Iowa","gasoline":"2.911","midGrade":"3.230","premium":"3.667","diesel":"3.434"},{"currency":"usd","name":"Idaho","gasoline":"3.046","midGrade":"3.306","premium":"3.552","diesel":"3.435"},{"currency":"usd","name":"Illinois","gasoline":"3.280","midGrade":"3.837","premium":"4.286","diesel":"3.650"},{"currency":"usd","name":"Indiana","gasoline":"3.029","midGrade":"3.562","premium":"4.053","diesel":"3.687"},{"currency":"usd","name":"Kansas","gasoline":"2.811","midGrade":"3.139","premium":"3.440","diesel":"3.316"},{"currency":"usd","name":"Kentucky","gasoline":"2.770","midGrade":"3.273","premium":"3.696","diesel":"3.350"},{"currency":"usd","name":"Louisiana","gasoline":"2.777","midGrade":"3.187","premium":"3.557","diesel":"3.377"},{"currency":"usd","name":"Massachusetts","gasoline":"3.043","midGrade":"3.637","premium":"4.000","diesel":"3.799"},{"currency":"usd","name":"Maryland","gasoline":"3.310","midGrade":"3.857","premium":"4.148","diesel":"3.851"},{"currency":"usd","name":"Maine","gasoline":"3.082","midGrade":"3.620","premium":"4.063","diesel":"3.939"},{"currency":"usd","name":"Michigan","gasoline":"3.10…Field notes you’ll actually use:
- success: boolean indicating the request status.
- result: array of price objects. Key fields:
- name: area name (for example, a state or jurisdiction label in returned data).
- currency: currency code (usd in this sample).
- gasoline, midGrade, premium, diesel: prices as strings. Treat as dollars per gallon unless your usage specifies otherwise.
Units: The data uses USD and, for station-level details, price_unit reports dollars_per_gallon (see the Station Data response below). Handle values as strings in JSON and convert to decimals where needed for calculations.
2) Station Data (GET)
Request URL:
https://zylalabs.com/api/3927/gasoline-prices-api/24541/station-data
Description: Returns details for a specific station. You’ll need a station ID (obtainable from the Get Prices endpoint data). No request parameters are documented here; authenticate with your Bearer token.
Official cURL example (copy/paste):
Official JSON response (verbatim):
Field notes you’ll actually use:
- data.station_id, data.name: identify the station.
- data.address, data.coordinates: useful for maps and turn-by-turn links.
- data.currency: USD.
- data.price_unit: dollars_per_gallon, which clarifies the unit used in price listings.
C# integration with HttpClient
The following C# example shows how to call Prices with the required parameters, set the Authorization: Bearer header, and parse the JSON to extract a few fields. This is a console example you can drop into a .NET project using System.Net.Http and System.Text.Json.
using System;
using System.Linq;
using System.Net.Http;
using System.Net.Http.Headers;
using System.Text.Json;
using System.Threading.Tasks;
class Program
{
private static readonly HttpClient http = new HttpClient();
static async Task Main()
{
// Endpoint and required query params: zip and type
var url = "https://zylalabs.com/api/3927/gasoline-prices-api/4649/prices?zip=90001&type=regular";
// Auth: Bearer YOUR_API_KEY
http.DefaultRequestHeaders.Authorization =
new AuthenticationHeaderValue("Bearer", "YOUR_API_KEY");
using var resp = await http.GetAsync(url);
resp.EnsureSuccessStatusCode();
var json = await resp.Content.ReadAsStringAsync();
// Parse minimally: success + result array with name/currency/gasoline/midGrade/premium/diesel
using var doc = JsonDocument.Parse(json);
var root = doc.RootElement;
bool success = root.GetProperty("success").GetBoolean();
if (!success)
{
Console.WriteLine("Request failed.");
return;
}
var results = root.GetProperty("result").EnumerateArray().ToList();
// Example: find California entry and print regular gasoline and diesel
var california = results.FirstOrDefault(e =>
e.TryGetProperty("name", out var n) && n.GetString() == "California");
if (california.ValueKind != JsonValueKind.Undefined)
{
string currency = california.GetProperty("currency").GetString();
string regular = california.GetProperty("gasoline").GetString();
string diesel = california.GetProperty("diesel").GetString();
Console.WriteLine($"California prices - Regular: {regular} {currency}, Diesel: {diesel} {currency}");
}
else
{
Console.WriteLine("California entry not found in result.");
}
}
}Notes that save time:
- Set the Authorization header once per HttpClient instance. Rotate the key by replacing only the header value.
- Prices in the sample JSON are strings. Convert to decimal for math (e.g., Decimal.Parse with invariant culture) to avoid locale issues.
- Cache by ZIP and fuel type if you show the same tiles repeatedly; the API provides location-based data that doesn’t change every second. Decide your own freshness policy.
- Quotas are subscription-based. Track remaining calls in your app logic if you run high-traffic ZIP scans. See the API page for details.
Quick JavaScript fetch example
For testing or lightweight integrations, here’s a minimal JS snippet calling the same Prices endpoint. Keep the same Authorization header and required query parameters.
async function getPrices() {
const url = "https://zylalabs.com/api/3927/gasoline-prices-api/4649/prices?zip=90001&type=regular";
const resp = await fetch(url, {
method: "GET",
headers: {
"Authorization": "Bearer YOUR_API_KEY"
}
});
if (!resp.ok) {
throw new Error(`HTTP ${resp.status}`);
}
const data = await resp.json();
if (!data.success) {
throw new Error("API reported failure");
}
// Example: list name + gasoline for quick display
data.result.forEach(item => {
console.log(`${item.name}: Regular ${item.gasoline} ${item.currency}`);
});
}
getPrices().catch(console.error);Practical usage patterns
- ZIP-based price lookup for checkout: Estimate fuel surcharges for local delivery by pulling regular or diesel prices by ZIP and applying your per-mile model.
- Route planning UI: Show users a price snapshot near waypoints by ZIP. Store the price unit (dollars_per_gallon) to prevent display mistakes in multi-unit UIs.
- Budget dashboards: Average or min/max per jurisdiction from the result array to build trend cards. Convert price strings to numeric types before aggregations.
- Station details: If a specific station requires extra context (address/coordinates), call Station Data to enrich the card with location and unit info.
How to call via AI agents using MCP
You can invoke the same Hub endpoints from AI coding agents or MCP-compatible clients by pointing them to Zyla’s MCP endpoint:
Supply your Zyla API key with the apikey query parameter when configuring the MCP client: https://mcp.zylalabs.com/mcp?apikey=YOUR_API_KEY. Calls made by the agent use the same Authorization: Bearer model behind the scenes, so the same URLs and required query parameters apply (for example, the Prices endpoint requires zip and type). This works with MCP-enabled tools such as Claude Code, Cursor, and Windsurf.
Error handling, units, and quotas
- HTTP errors: Handle non-2xx with retries only when appropriate. Don’t retry 4xx without changing inputs or authentication.
- API status flags: Check success in Prices and status in Station Data to verify a valid response before dereferencing fields.
- Units and currency: Use the currency field (usd/USD) and price_unit (dollars_per_gallon) for labeling and conversions. Keep all math in numeric types, not strings.
- Caching: If your UX tolerates slight staleness, cache by (zip, type) keys to minimize calls and keep within your subscription quota.
- Access model: Subscription + quota. The first-time experience typically offers a 7-day trial or 50 requests to validate your integration. There’s no Free Plan. For current options, see the API listing page.
Full reference of the two documented endpoints
Prices
- Method: GET
- URL: https://zylalabs.com/api/3927/gasoline-prices-api/4649/prices
- Required query params:
- zip: e.g., 90001
- type: e.g., regular
- Auth: Authorization: Bearer YOUR_API_KEY
Station Data
- Method: GET
- URL: https://zylalabs.com/api/3927/gasoline-prices-api/24541/station-data
- Parameters: None documented here; this endpoint expects a station ID context derived from the Prices data.
- Auth: Authorization: Bearer YOUR_API_KEY
FAQs
Q1: What authentication is required?
A: Include Authorization: Bearer YOUR_API_KEY in every request to the Zyla Hub URLs.
Q2: Which parameters are mandatory for the Prices endpoint?
A: zip and type are required (example: zip=90001 and type=regular).
Q3: How do I get station details?
A: Use the Station Data endpoint after identifying a station ID from the Prices data. The Station Data call itself does not document query parameters; authenticate with your Bearer token.
Q4: What are the units and currency?
A: Prices are reported in USD; station-level metadata specifies price_unit as dollars_per_gallon.
Q5: How is billing handled?
A: Subscription + quota on Zyla API Hub (not pay-per-call). For first use, you typically have either a 7-day trial or 50 requests. There is no Free Plan; check the API page for current options.
Ready to implement? Create your account, get your key, and ship the integration this week. Start here: Register. You can also browse more APIs anytime on Zyla API Hub or jump directly to the Gasoline Prices API listing.
