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@vepler/sdk

v2.33.0

Published

Developer-friendly & type-safe Typescript SDK specifically catered to leverage *@vepler/sdk* API.

Downloads

1,428

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Readme

@vepler/sdk

Developer-friendly & type-safe Typescript SDK specifically catered to leverage @vepler/sdk API.

Summary

Vepler Public API: The definitive public API for UK property technology. Access comprehensive property data, listings, planning applications, schools, connectivity scores, and more. Private endpoints (webhooks, admin) are not included in this specification.

Table of Contents

SDK Installation

[!TIP] To finish publishing your SDK to npm and others you must run your first generation action.

The SDK can be installed with either npm, pnpm, bun or yarn package managers.

NPM

npm add <UNSET>

PNPM

pnpm add <UNSET>

Bun

bun add <UNSET>

Yarn

yarn add <UNSET>

[!NOTE] This package is published with CommonJS and ES Modules (ESM) support.

Authentication

To use the Vepler SDK, you need an API key. You can obtain one by contacting [email protected].

Once you have your API key, you can initialize the SDK:

import { SDK } from "@vepler/sdk";

const sdk = new SDK({
  apiKey: "your-api-key-here",
  // Optional: specify a different server URL
  serverURL: "https://api.vepler.com",
});

For security, we recommend storing your API key in environment variables:

export VEPLER_API_KEY=your-api-key-here
const sdk = new SDK({
  apiKey: process.env.VEPLER_API_KEY,
});

Requirements

For supported JavaScript runtimes, please consult RUNTIMES.md.

SDK Example Usage

Example

import { SDK } from "@vepler/sdk";

const sdk = new SDK({
  apiKeyAuth: "vepler_api_YOUR_KEY_HERE",
});

async function run() {
  const result = await sdk.address.resolveAddress();

  console.log(result);
}

run();

Authentication

Per-Client Security Schemes

This SDK supports the following security scheme globally:

| Name | Type | Scheme | | ------------ | ------ | ------- | | apiKeyAuth | apiKey | API key |

To authenticate with the API the apiKeyAuth parameter must be set when initializing the SDK client instance. For example:

import { SDK } from "@vepler/sdk";

const sdk = new SDK({
  apiKeyAuth: "vepler_api_YOUR_KEY_HERE",
});

async function run() {
  const result = await sdk.address.resolveAddress();

  console.log(result);
}

run();

Available Resources and Operations

Address

Areas

Avm

Connectivity

Councils

  • get - Get council by provider ID
  • list - List councils

Epc

Listings

Metrics

Planning

Poi

Property

Safety

Schools

Search

  • searchSuggest - Autocomplete search for UK addresses and locations

Streets

System

Standalone functions

All the methods listed above are available as standalone functions. These functions are ideal for use in applications running in the browser, serverless runtimes or other environments where application bundle size is a primary concern. When using a bundler to build your application, all unused functionality will be either excluded from the final bundle or tree-shaken away.

To read more about standalone functions, check FUNCTIONS.md.

Retries

Some of the endpoints in this SDK support retries. If you use the SDK without any configuration, it will fall back to the default retry strategy provided by the API. However, the default retry strategy can be overridden on a per-operation basis, or across the entire SDK.

To change the default retry strategy for a single API call, simply provide a retryConfig object to the call:

import { SDK } from "@vepler/sdk";

const sdk = new SDK({
  apiKeyAuth: "vepler_api_YOUR_KEY_HERE",
});

async function run() {
  const result = await sdk.address.resolveAddress({
    retries: {
      strategy: "backoff",
      backoff: {
        initialInterval: 1,
        maxInterval: 50,
        exponent: 1.1,
        maxElapsedTime: 100,
      },
      retryConnectionErrors: false,
    },
  });

  console.log(result);
}

run();

If you'd like to override the default retry strategy for all operations that support retries, you can provide a retryConfig at SDK initialization:

import { SDK } from "@vepler/sdk";

const sdk = new SDK({
  retryConfig: {
    strategy: "backoff",
    backoff: {
      initialInterval: 1,
      maxInterval: 50,
      exponent: 1.1,
      maxElapsedTime: 100,
    },
    retryConnectionErrors: false,
  },
  apiKeyAuth: "vepler_api_YOUR_KEY_HERE",
});

async function run() {
  const result = await sdk.address.resolveAddress();

  console.log(result);
}

run();

Error Handling

SDKBaseError is the base class for all HTTP error responses. It has the following properties:

| Property | Type | Description | | ------------------- | ---------- | --------------------------------------------------------------------------------------- | | error.message | string | Error message | | error.statusCode | number | HTTP response status code eg 404 | | error.headers | Headers | HTTP response headers | | error.body | string | HTTP body. Can be empty string if no body is returned. | | error.rawResponse | Response | Raw HTTP response | | error.data$ | | Optional. Some errors may contain structured data. See Error Classes. |

Example

import { SDK } from "@vepler/sdk";
import * as errors from "@vepler/sdk/sdk/models/errors";

const sdk = new SDK({
  apiKeyAuth: "vepler_api_YOUR_KEY_HERE",
});

async function run() {
  try {
    const result = await sdk.address.resolveAddress();

    console.log(result);
  } catch (error) {
    // The base class for HTTP error responses
    if (error instanceof errors.SDKBaseError) {
      console.log(error.message);
      console.log(error.statusCode);
      console.log(error.body);
      console.log(error.headers);

      // Depending on the method different errors may be thrown
      if (error instanceof errors.ResolveAddressResponseBody) {
        console.log(error.data$.error); // string
        console.log(error.data$.statusCode); // number
        console.log(error.data$.success); // boolean
      }
    }
  }
}

run();

Error Classes

Primary error:

Network errors:

Inherit from SDKBaseError:

* Check the method documentation to see if the error is applicable.

Server Selection

Override Server URL Per-Client

The default server can be overridden globally by passing a URL to the serverURL: string optional parameter when initializing the SDK client instance. For example:

import { SDK } from "@vepler/sdk";

const sdk = new SDK({
  serverURL: "https://api.vepler.com",
  apiKeyAuth: "vepler_api_YOUR_KEY_HERE",
});

async function run() {
  const result = await sdk.address.resolveAddress();

  console.log(result);
}

run();

Custom HTTP Client

The TypeScript SDK makes API calls using an HTTPClient that wraps the native Fetch API. This client is a thin wrapper around fetch and provides the ability to attach hooks around the request lifecycle that can be used to modify the request or handle errors and response.

The HTTPClient constructor takes an optional fetcher argument that can be used to integrate a third-party HTTP client or when writing tests to mock out the HTTP client and feed in fixtures.

The following example shows how to use the "beforeRequest" hook to to add a custom header and a timeout to requests and how to use the "requestError" hook to log errors:

import { SDK } from "@vepler/sdk";
import { HTTPClient } from "@vepler/sdk/lib/http";

const httpClient = new HTTPClient({
  // fetcher takes a function that has the same signature as native `fetch`.
  fetcher: (request) => {
    return fetch(request);
  }
});

httpClient.addHook("beforeRequest", (request) => {
  const nextRequest = new Request(request, {
    signal: request.signal || AbortSignal.timeout(5000)
  });

  nextRequest.headers.set("x-custom-header", "custom value");

  return nextRequest;
});

httpClient.addHook("requestError", (error, request) => {
  console.group("Request Error");
  console.log("Reason:", `${error}`);
  console.log("Endpoint:", `${request.method} ${request.url}`);
  console.groupEnd();
});

const sdk = new SDK({ httpClient: httpClient });

Debugging

You can setup your SDK to emit debug logs for SDK requests and responses.

You can pass a logger that matches console's interface as an SDK option.

[!WARNING] Beware that debug logging will reveal secrets, like API tokens in headers, in log messages printed to a console or files. It's recommended to use this feature only during local development and not in production.

import { SDK } from "@vepler/sdk";

const sdk = new SDK({ debugLogger: console });

Testing

For local testing, use the provided test script:

# Set your API key
export VEPLER_API_KEY=your-api-key-here

# Run the test script
bun run test-local.ts

The test script will verify:

  • API connectivity
  • Authentication
  • Basic CRUD operations
  • Error handling

Development

Maturity

This SDK is in beta, and there may be breaking changes between versions without a major version update. Therefore, we recommend pinning usage to a specific package version. This way, you can install the same version each time without breaking changes unless you are intentionally looking for the latest version.

Contributions

While we value open-source contributions to this SDK, this library is generated programmatically. Any manual changes added to internal files will be overwritten on the next generation. We look forward to hearing your feedback. Feel free to open a PR or an issue with a proof of concept and we'll do our best to include it in a future release.

SDK Created by Speakeasy