This API version isn't the latest one.
It is advisable to use the latest API version which contains the latest Context.IO enhancements.
This call returns list of one or more contacts.
GET https://api.context.io/1.1/contactsearch.json
String identifying the name or the email address of the contact(s) you are looking for.
The response is a list of contacts:
{
...
data: {
query: (string) The search query,
matches: [
{
emails: (array) List of known email addresses of associated to the account
userId: (string) Unique ID of the contact's Context.IO account
name: (string) name of contact
me: (boolean) indicating if this is your account
thumbnail: (string) thumbnail URL
},
...
]
}
}