Contacts API

API calls are made per channel. Tokens can be generated by using the key icon, next to the desired channel in Settings. There is a 200 API calls per minute rate limit.
Requests
The Contacts API is composed of several requests:
​Get Contact by Custom Field​
​Get Contact by ID​
​Update Contact by ID​
​Add Tag by ID​
​Remove Tag by ID​
​Create Contact​
Get Contact by Custom Field
This request returns a list of Contact objects with pagination.
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/v1/contact/by_custom_field
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Sample GET Request
If you wish to retrieve a list of contacts by custom field of type boolean, please be sure to use true or false as a value. 
If you wish to retrieve a list of contacts by phone number, please be sure to replace the '+' with '%2B'
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curl -X GET \
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      'https://app.respond.io/api/v1/contact/by_custom_field?name=firstName&value=Muhammad%20Mahin' \
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      -H 'Authorization: Bearer {channel_token}' \
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      -H 'Content-Type: application/json'
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Response - Success (HTTP status → 200)
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{
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      "data": [
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        {
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          "id": "1776025372480910",
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          "custom_fields": {
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            "firstName": "Mahin",
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            "lastName": "Dar",
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            "locale": "en_GB",
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            "timezone": "5",
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            "gender": "male",
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            "phone": "123123",
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            "email": "[email protected]",
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            "customerid": "1",
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            "isLead" : true
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          },
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          "tags": [
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            "Blog Updates",
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            "Platform Updates"
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          ],
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          "created_at": 1575618542
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        }
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      ],
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      "links": {
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        "first": "http://app.respond.io/api/v1/contact/by_custom_field?page=1",
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        "last": "http://app.respond.io/api/v1/contact/by_custom_field?page=1",
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        "prev": null,
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        "next": null
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      },
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      "meta": {
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        "current_page": 1,
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        "from": 1,
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        "last_page": 1,
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        "path": "http://app.respond.io/api/v1/contact/by_custom_field",
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        "per_page": 10,
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        "to": 1,
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        "total": 1
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      }
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    }
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Get Contact by ID
This request returns a single Contact object.
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/v1/contact/{contact_id}
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Sample GET Request
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curl -X GET \
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      https://app.respond.io/api/v1/contact/1776025372480910 \
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      -H 'Authorization: Bearer {channel_token}' \
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      -H 'Content-Type: application/json' \
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Response - Success (HTTP status → 200)
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{
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        "data": {
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            "id": "1776025372480910",
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            "custom_fields": {
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                "firstName": "Mahin",
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                "lastName": "Dar",
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                "locale": "en_GB",
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                "timezone": "5",
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                "gender": "male",
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                "phone": "123123",
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                "email": "[email protected]",
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                "customerid": "1"
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            },
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            "tags": [
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                "Blog Updates",
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                "Platform Updates"
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            ],
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            "created_at": 1575618542
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        }
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    }
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Update Contact by ID
This request updates a contact custom field value.
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/v1/contact/{contact_id}
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Sample PUT Request
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curl -X PUT \
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      https://app.respond.io/api/v1/contact/1776025372480910 \
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      -H 'Authorization: Bearer {channel_token}' \
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      -H 'Content-Type: application/json' \
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      -d '{
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        "custom_fields": [
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            {
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                "name": "firstName",
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                "value": "Muhammad Mahin"
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            },
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            {
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                "name": "lastName",
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                "value": "Dar"
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            }
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        ]
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    }'
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Response - Success (HTTP status → 200)
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{
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      "data": {
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        "id": "cus_112233344555"
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      }
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    }
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Limitations
Maximum 30 Fields updated per Request.
Please note that in case of Viber Channel - due to a certain limitation - the Contact ID needs to be provided in a Base64 encoded format.
Add Tag by ID
This request adds tags for a Contact.
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/v1/contact/{contact_id}/tags
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Sample POST Request
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curl -X POST \
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      https://app.respond.io/api/v1/contact/1776025372480910/tags \
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      -H 'Authorization: Bearer {channel_token}' \
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      -H 'Content-Type: application/json' \
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      -d '{
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        "tags": [
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            "Blog Updates",
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            "Platform Updates"
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        ]
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    }'
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Response - Success (HTTP status → 200)
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{
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        "status": "success",
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        "message": "Contact Tags have been added successfully.",
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        "data": []
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    }
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Limitations
Maximum 10 Tags added per Request.
Remove Tag by ID
This request deletes tags for a Contact.
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/v1/contact/{contact_id}/tags
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Sample DELETE Request
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curl -X DELETE \
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      https://app.respond.io/api/v1/contact/1776025372480910/tags \
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      -H 'Authorization: Bearer {channel_token}' \
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      -H 'Content-Type: application/json' \
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      -d '{
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        "tags": [
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            "Blog Updates",
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            "Platform Updates"
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        ]
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    }'
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Response - Success (HTTP status → 200)
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{
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        "status": "success",
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        "message": "Contact Tags deleted successfully.",
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        "data": []
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    }
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Limitations
Maximum 10 Tags deleted per Request.
Please note that in case of Viber Channel - due to a certain limitation - the Contact ID needs to be provided in a Base64 encoded format.
Create Contact
This request creates a Contact and sets values for its Custom Fields.
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/v1/contact
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Sample POST Request
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curl -X POST \
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      https://app.respond.io/api/v1/contact/ \
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      -H 'Authorization: Bearer {channel_api_token}' \
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      -H 'Content-Type: application/json' \
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      -d '{
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        "custom_fields": [
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            {
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                "name": "phone",
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                "value": "03244077087"
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            },
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            {
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                "name": "firstName",
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                "value": "Muhammad Mahin"
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            },
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            {
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                "name": "lastName",
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                "value": "Dar"
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            }
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        ]
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    }'
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Response - Success (HTTP status → 200)
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{
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        "data": {
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            "id": "cus_112233344555"
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        }
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    }
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Error Codes
Unauthorized (HTTP Status → 401)
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{
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        "status": "error",
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        "message": "API Token is invalid.",
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        "data": []
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    }
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Too Many Requests (HTTP Status → 429)
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  {
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      "status": "error",
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      "message": "Too many requests",
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      "data": []
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  }
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Method Not Allowed (HTTP Status → 405)
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  {
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      "status": "error",
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      "message": "405 Method Not Allowed.",
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      "data": []
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  }
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General (HTTP Status → 403)
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  {
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      "status": "error",
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      "message": "Message String",
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      "data": []
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  }
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Limitations
Maximum 30 Fields created per Request.