Where can I get Google developer key

I am working on Google API like chat, contacts and so on... I am stuck on developer_key as mentioned in gdata doc.

You can get this at https://code.google.com/apis/console:

'developer_key' => ''

I have already:

// OAuth2 Settings, you can get these keys at https://code.google.com/apis/console
'oauth2_client_id' => '',
'oauth2_client_secret' => '',
'oauth2_redirect_uri' => ''

Where can I find developer key?

I found some thing like this

http://code.google.com/apis/youtube/dashboard/gwt/index.html

But I understand this to be only for youtube.

Solution 1:

It's the API key as listed under 'API Access', the 'Simple API Access' box.

Solution 2:

First activate Google+ API, then you will get "Simple API access" box, from there you can get developer key as API key https://code.google.com/apis/console/?api=plus or read this: http://code.google.com/p/google-api-php-client/wiki/OAuth2

Solution 3:

Update Nov 2015:

Sometime in late 2015, the Google Developers Console interface was overhauled again. For the new interface:

1. Select your project from the toolbar.

2. Open the "Gallery" using hamburger menu icon on the left side of the toolbar and select 'API Manager'.

3. Click 'Credentials' in the left-hand navigation.

Alternatively, you can click 'Switch to old console' under the the three-dot menu (right side of the toolbar), then follow the instructions below.

For the NEW (edit: OLD) Google Developers Console:

You get your 'Developer key' (a.k.a. API key) on the same screen where you get your client ID/secret. (This is the 'Credentials' screen, which can be found under 'APIs & auth' in the left nav.)

Below your client ID keys, there is a section titled 'Public API access'. If there are no keys in this this section, click 'Create new Key'. Your developer key is the 'API key' specified here.

Solution 4:

Update no 3:

You can get a Developer_Key from here Get your Google Developer Key

Check this tutorial

{select as answered, if it answered.}

Update no 2:

"API key" is the DEVELOPER_KEY

if you check this code reference, it states

Set DEVELOPER_KEY to the "API key" value from the "Access" tab of the Google APIs Console http://code.google.com/apis/console#access`

Wiki on step by step to get API Key & secret

Update:

Developer API Key! probably this is what you might be looking for

http://code.garyjones.co.uk/google-developer-api-key

OR

If say, for instance, you have a web app which would require a API key then check this:

1. Go to Google API Console Select you project OR Create your project.
2. Select APIs & Auths
3. API Project from the Dropdown on the left navigation panel
4. API Access
5. Click on Create another Client ID
6. Select Service application refer it here

The Service application that you have created can be used by your Web apps such as PHP, Python, ..., etc.