GraphQL

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GraphQL
Our API primarily speaks GraphQL (GQL, for short). While explaining how GraphQL works is beyond the scope of this guide, there are excellent resources available on the interwebs.
Here we will introduce the basic request-response structure of the Sentiance GraphQL API.
Endpoint and Authorization
Our default GraphQL endpoint lives at POST https://api.sentiance.com/v2/gql and accepts the same bearer token based authorization as our REST endpoints.​
We adhere to the GraphQL specification but do not support multiple operation types.
Since it is possible for a single HTTP request to encompass multiple GraphQL queries with some of them succeeding and some of them failing, the endpoint always returns a 200 OK, unless something severe enough happens on the server-side to guarantee failure of the entire response (such as a 500 status code). After checking for the 200 status code, please also check the body of the response for data and error properties.
For other environments, please ask your sales representative or [email protected] for the custom endpoint linked to your environment. 
post
https://api.sentiance.com
/v2/gql
GQL Request
Introspection
While you can always discover and play around with Graphql in our Data Explorers, you might wish to programatically introspect our Schema for your own tools to parse. You can do so by firing off an Introspection Query.
QUERY
query IntrospectionQuery {
  __schema {
    queryType {
      name
    }
    mutationType {
      name
    }
    subscriptionType {
      name
    }
    types {
      ...FullType
    }
    directives {
      name
      description
      locations
      args {
        ...InputValue
      }
    }
  }
}
​
fragment FullType on __Type {
  kind
  name
  description
  fields(includeDeprecated: true) {
    name
    description
    args {
      ...InputValue
    }
    type {
      ...TypeRef
    }
    isDeprecated
    deprecationReason
  }
  inputFields {
    ...InputValue
  }
  interfaces {
    ...TypeRef
  }
  enumValues(includeDeprecated: true) {
    name
    description
    isDeprecated
    deprecationReason
  }
  possibleTypes {
    ...TypeRef
  }
}
​
fragment InputValue on __InputValue {
  name
  description
  type {
    ...TypeRef
  }
  defaultValue
}
​
fragment TypeRef on __Type {
  kind
  name
  ofType {
    kind
    name
    ofType {
      kind
      name
      ofType {
        kind
        name
        ofType {
          kind
          name
          ofType {
            kind
            name
            ofType {
              kind
              name
              ofType {
                kind
                name
              }
            }
          }
        }
      }
    }
  }
}
​
Examples
Some examples of various GQL queries with example response are presented here. With GraphQL you can fetch as much or as little as you wish. 
Moment Definitions
QUERY
query {
  moment_definitions {
    id
    type
    category
    display_name
  } 
}
​
RESPONSE
{
  "data": {
    "moment_definitions": [
      {
        "id": "working_at_work",
        "type": "MomentDefinition",
        "category": "activity",
        "display_name": "Working at work"
      },
      {...}
    ]
  }
}
Alpha Segments
QUERY
query {
  segment_definitions(status: ALPHA) {
    id
    type
    category
    display_name
  } 
}
​
RESPONSE
{
  "data": {
    "segment_definitions": [
      {
        "id": "mobility.passenger",
        "type": "SegmentDefinition",
        "category": "passenger",
        "display_name": "Passenger"
      },
      {...}
    ]
  }
}
User Timeline Query
QUERY
query($user_id: String!, $from:String, $to: String) {
  user(id: $user_id) {
    event_history(from: $from, to:$to) {
      type
      start
      end
      analysis_type
      ... on Stationary {
        latitude
        longitude
        location {
          significance
        }
      }
      ... on Transport {
        mode
        distance
      }
    }
  }
}
​
VARIABLES
{ 
  "user_id": "583e08a1cd99250700000002",
  "from": "2019-03-22",
  "to": "2019-03-23"
}
​
RESPONSE
{
  "data": {
    "user": {
      "event_history": [
        {
          "type": "Stationary",
          "start": "2019-03-23T19:51:49.000+01:00",
          "end": "2019-03-25T08:30:21.000+01:00",
          "analysis_type": "indepth",
          "latitude": 51.78561,
          "longitude": 42.49694,
          "location": {
            "significance": "home"
          }
        },
        {
          "type": "Transport",
          "start": "2019-03-23T19:49:49.000+01:00",
          "end": "2019-03-23T19:51:49.000+01:00",
          "analysis_type": "indepth",
          "mode": "walking",
          "distance": null
        },
        {...}
      ]
    }
  }
}
User Moment History
QUERY
query($user_id: String!, $from:String, $to: String) {
  user(id: $user_id) {
    id
    moment_history(from: $from, to:$to) {
      start
      end
      analysis_type
      moment_definition_id
    }
  }
}
​
VARIABLES
{ 
  "user_id": "583e08a1cd99250700000002",
  "from": "2019-03-22",
  "to": "2019-03-23"
}
​
RESPONSE
{
  "data": {
    "user": {
      "id": "583e08a1cd99250700000002",
      "moment_history": [
        {
          "start": "2019-03-23T19:51:49.000+01:00",
          "end": "2019-03-25T08:30:21.000+01:00",
          "analysis_type": "processed",
          "moment_definition_id": "home"
        },
        {
          "start": "2019-03-23T19:22:40.000+01:00",
          "end": "2019-03-23T19:49:49.000+01:00",
          "analysis_type": "processed",
          "moment_definition_id": "shopping_routine"
        },
        {...}
      ]
    }
  }
}
​
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Outline
Endpoint and Authorization
post
GQL Request
Introspection
Examples
Moment Definitions
Alpha Segments
User Timeline Query
User Moment History