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add api key info to intro

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Rhonda Glennon 9 years ago
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      add-search-to-a-map.md

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add-search-to-a-map.md

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Through a process known as [geocoding](https://en.wikipedia.org/wiki/Geocoding), Mapzen Search allows you to enter an address or the name of a landmark or business, and the service translates the result into geographic coordinates for mapping. Mapzen Search is built on [Pelias](https://github.com/pelias), an open-source geocoding project.
In this walkthrough, you will learn how to make a map with a search box that allows you to enter addresses and place names and locate them on a map. To complete the tutorial, you should have some familiarity with HTML and JavaScript, although all the source code is provided.
In this walkthrough, you will learn how to make a map with a search box that allows you to enter addresses and place names and locate them on a map. To complete the tutorial, you should have some familiarity with HTML and JavaScript, although all the source code is provided. You also need a Mapzen Search [API key](https://mapzen.com/developers), which requires a [GitHub account](https://help.github.com/articles/signing-up-for-a-new-github-account/) for authorization. You can use any text editor and operating system, but must maintain an Internet connection while you are working.
## Sign up for a Mapzen Search API key
To use the geocoding service, you must first obtain a Mapzen Search [API key](https://en.wikipedia.org/wiki/Application_programming_interface_key). Because the search service is shared among many users, an API key is a way to make sure that the performance is acceptable for everyone. Sign in at https://mapzen.com/developers to create and manage your API keys.
1. Go to https://mapzen.com/developers.
2. Sign in with your GitHub account. If you have not done this before, you need to agree to the terms first.
2. Sign in with your [GitHub account](https://help.github.com/articles/signing-up-for-a-new-github-account/). If you have not done this before, you need to agree to the terms first.
3. Create a new key for Search, and optionally, give it a project name so you can remember the purpose of the key.
4. Keep the web page open so you can copy the key into the source code later.

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