Entity Connections API

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Discover the details of the Entity Connections API.

Overview

Users will be able to access relationships between a known WorldCat Entity and related WorldCat Entities and FAST Concepts based on co-occurance in WorldCat. Users will also be able to access WorldCat Entity Works related to the known WorldCat Entity.

Note: An additional subscription is required to use the Entity Connections API.

To learn about OCLC APIs and get started with the Entity Connections API, see:

If you're ready to start using the Entity Connections API, the OCLC Developer Network can help you learn more. The OCLC Developer Network allows you to learn about OCLC APIs, view OCLC API documentation, and participate in the OCLC APIs community.

Parameters

Parameter	Required	Supported Values	Example
q	TRUE	Query which needs to be searched A fully formed WorldCat Entities ID	q=https://entities.oclc.org/worldcat/entity/E39PBJqbh7kt6hKyc8TVBRfjG3
namespace	FALSE	String value Default namespace value = default	namespace=default
headers	FALSE	application-id is required in higher environments => semi-api is the only supported value at this instance of time registry_id which tracks who made the search (optional)	semi-api 21

Parameter

Required

Supported Values

Example

TRUE

Query which needs to be searched
A fully formed WorldCat Entities ID

q=https://entities.oclc.org/worldcat/entity/E39PBJqbh7kt6hKyc8TVBRfjG3

namespace

FALSE

String value
Default namespace value = default

namespace=default

headers

FALSE

application-id is required in higher environments => semi-api is the only supported value at this instance of time
registry_id which tracks who made the search (optional)

semi-api

Examples

Query sample 1

The following query will search entities data and co-occurance data and return combined results:

GET 'https://entities.api.oclc.org/v2/search/related?q=https://entities.oclc.org/worldcat/entity/E39PBJqqCtcDcw6YhVrpg96tKd''

Entities data - example code

{
  "_index": "transitional-text",
  "_id": "E39PBJqqCtcDcw6YhVrpg96tKd|default",
  "total": 3,
  "results": [
    {
      "id": "https://entities.oclc.org/worldcat/entity/E39Qhp4vBb9MccrbGYWtPMQjDy",
      "type": [
        "Event"
      ],
      "prefLabel.de": "Kosovokrieg",
      "prefLabel.en": "Kosovo War",
      "description.ko": "1998~1999년 코소보 무력충돌"
    },
    {
      "id": "https://entities.oclc.org/worldcat/entity/E39PBJqqCtcDcw6YhVrpg96tKd",
      "type": [
        "AdministrativeArea"
      ],
      "prefLabel.de": "Albanien",
      "prefLabel.en": "Republic of Albania",
      "description.en": "independent political entity in Albania, Europe"
    },
    {
      "id": "https://entities.oclc.org/worldcat/entity/E39PBJvd9g4RTjx6mdyWXrq4v3",
      "type": [
        "Person"
      ],
      "prefLabel.de": "Kara Ahmed Pasha",
      "description.en": "Grand Vizier of the Ottoman Empire"
    }
  ]
}

Query sample 2

https://entities.api.oclc.org/v1/connections?q=https://id.oclc.org/worldcat/entity/E39PBJkMHVW4rfVXPrhVP4VwG3

Example code

Canada
https://id.oclc.org/worldcat/entity/E39PBJkMHVW4rfVXPrhVP4VwG3
EntityType: AdminsitrativeArea
Note: Updated June 25, 2024
 
{
    "entityUri": https://id.oclc.org/worldcat/entity/E39PBJymvHmTFRDGy9C8fFx7HC,
    "type": [
        "Person"
    ],
    "related_concept": [
        http://id.worldcat.org/fast/799727,
        http://id.worldcat.org/fast/1177093,
        http://id.worldcat.org/fast/799498,
        http://id.worldcat.org/fast/799477,
        http://id.worldcat.org/fast/807048,
        http://id.worldcat.org/fast/1086506,
        http://id.worldcat.org/fast/799028,
        http://id.worldcat.org/fast/807113,
        http://id.worldcat.org/fast/807114,
        http://id.worldcat.org/fast/807049
    ],
    "related_event": [
        https://id.oclc.org/worldcat/entity/E39Qhp4vBbhpYvtywMDH9CxYwK,
        https://id.oclc.org/worldcat/entity/E39Qhp4vBbvj7vqMw7VQ8xryTb
    ],
    "related_person": [
        https://id.oclc.org/worldcat/entity/E39PBJcrf9VkGHQ993Q4kpWbh3,
        https://id.oclc.org/worldcat/entity/E39PBJmxRdphdq8YDmmv3G34v3,
        https://id.oclc.org/worldcat/entity/E39PBJpV3qyKgWRvDghKwf4cyd,
        https://id.oclc.org/worldcat/entity/E39PBJrKTV4VB7v6d4rVJ9Btrq,
        https://id.oclc.org/worldcat/entity/E39PBJfrMfbv8gK7G7Rpgm6VG3,
        https://id.oclc.org/worldcat/entity/E39PBJpJcFFffwHcxrgmp94Xh3,
        https://id.oclc.org/worldcat/entity/E39PBJrWB7MHhkkH346TDhGbVC,
        https://id.oclc.org/worldcat/entity/E39PBJyX3GGmXTJkRfxf3wF7pP,
        https://id.oclc.org/worldcat/entity/E39PBJv4mk4rVHDcMt7RVGgh73,
        https://id.oclc.org/worldcat/entity/E39PBJfWVddrMfjPdVVHhjTj4q,
        https://id.oclc.org/worldcat/entity/E39PBJmhMmCDqWP9Dfrg6dxJjC,
        https://id.oclc.org/worldcat/entity/E39PBJB4cMdh8x7CypbP9CJqwC,
        https://id.oclc.org/worldcat/entity/E39PBJdxbrdJ4Bvhdq6c99c773
    ],
    "related_place": [
        https://id.oclc.org/worldcat/entity/E39PBJtxgQXMWqmjMjjwXRHgrq,
        https://id.oclc.org/worldcat/entity/E39PBJkHrMyfHC67yqRTycbrv3,
        https://id.oclc.org/worldcat/entity/E39PBJm4WtgDXCCr4dpk8PgYfq,
        https://id.oclc.org/worldcat/entity/E39PBJpYDdYvBpjXV6WpybK68C,
        https://id.oclc.org/worldcat/entity/E39PBJcWtkkqd3cMmFw9GBdYT3,
        https://id.oclc.org/worldcat/entity/E39PBJvCPHbXvPDHJhhX89Xjmd,
        https://id.oclc.org/worldcat/entity/E39QbtfRB9KGtqfkFTFbfB77QY,
        https://id.oclc.org/worldcat/entity/E39PBJrGyXpMqXwYhd9fm8C4v3,
        https://id.oclc.org/worldcat/entity/E39QbtfRvQh7864Jh4rDGBFDWc,
        https://id.oclc.org/worldcat/entity/E39PBJt8p3GDkhpJkC9y6FY3wC
    ],
    "co_creators": [
        https://id.oclc.org/worldcat/entity/E39PBJqVXvvQmqvGvWC9F3XDbd,
        https://id.oclc.org/worldcat/entity/E39PCjxrptKFrJCkVVKvy44T9C,
        https://id.oclc.org/worldcat/entity/E39PBJv4mk4rVHDcMt7RVGgh73,
        https://id.oclc.org/worldcat/entity/E39PBJrRcdCXxhGM8hjBrkqPcP,
        https://id.oclc.org/worldcat/entity/E39PBJdRyRWbyYmTK7jJGGjQv3,
        https://id.oclc.org/worldcat/entity/E39PBJfmkWDG9BWVq38Ccvhj4q,
        https://id.oclc.org/worldcat/entity/E39PBJmxVFW6dMXrkwcyhXTGpP,
        https://id.oclc.org/worldcat/entity/E39PBJkTcHHpKkXfxBkcRv7CQq,
        https://id.oclc.org/worldcat/entity/E39PCjJ8F6YyfrDvHJ389P3wyd,
        https://id.oclc.org/worldcat/entity/E39PCjKWWDvGJxQQyJGfTcRTh3
    ],
    "related_works": [
        https://id.oclc.org/worldcat/entity/E39PCH6VdGVMgmHxvvFp8CGT73,
        https://id.oclc.org/worldcat/entity/E39PCGv9vPXJRjg3787gDvBKFq,
        https://id.oclc.org/worldcat/entity/E39PCGy7wKxjcYBT69xqmKq333,
        https://id.oclc.org/worldcat/entity/E39PCG9Kg66kypxhH6DqmMbxfy,
        https://id.oclc.org/worldcat/entity/E39PCFCQQGm87DxBCDJ4w8RTjK,
        https://id.oclc.org/worldcat/entity/E39PCFy7PW8XqWJmWjhkk6HxKq,
        https://id.oclc.org/worldcat/entity/E39PCGJp39hPKpFrbkYhYMcC6X,
        https://id.oclc.org/worldcat/entity/E39PCGyyk6Rbft43DQYKkbHP73,
        https://id.oclc.org/worldcat/entity/E39PCGvkPcmMhyKmQPtRJXRWQq,
        https://id.oclc.org/worldcat/entity/E39PCGGt6VkM3VPjRr8c6cF6PP,
        https://id.oclc.org/worldcat/entity/E39PCGFFfyKTc9bFyky9Q7TDVP,
        https://id.oclc.org/worldcat/entity/E39PCFvFk9DmdG4bGXC38fyxtC,
        https://id.oclc.org/worldcat/entity/E39PCGX4RFPdJ73pk8Jkdh3Qhd,
        https://id.oclc.org/worldcat/entity/E39PCGgD7fgwft8fDdwBxbVYKd,
        https://id.oclc.org/worldcat/entity/E39PCFwCMYtc6x6c4fvDJwDyVC,
        https://id.oclc.org/worldcat/entity/E39PCGXh7HHcwFbrcYQf8d8jYP,
        https://id.oclc.org/worldcat/entity/E39PCGWkY9cQFypPcqFb4WcWMq,
        https://id.oclc.org/worldcat/entity/E39PCGB8DMkkthf9DGb8bPmVQ3,
        https://id.oclc.org/worldcat/entity/E39PCGxXgh7gVt8xpXJqGv6GDy,
        https://id.oclc.org/worldcat/entity/E39PCFBFkyFvwFqtPQXpcf4Yrq,
        https://id.oclc.org/worldcat/entity/E39PCFtyy9mQp3MVPP6hT6XRgC,
        https://id.oclc.org/worldcat/entity/E39PCGVYXTPQ9wrPDHHbdWXBKd,
        https://id.oclc.org/worldcat/entity/E39PCFtFmdQjXpdVDGXgTcXt83,
        https://id.oclc.org/worldcat/entity/E39PCH3BdhjpHxbtfCXvWrXQtq,
        https://id.oclc.org/worldcat/entity/E39PCGvTXmkbt93BCrBhtc9ggC,
        https://id.oclc.org/worldcat/entity/E39PCGqHXhRk6pKkvKxXGrH7VC,
        https://id.oclc.org/worldcat/entity/E39PCGqwkKMv4RDqWmCQJkC8yb,
        https://id.oclc.org/worldcat/entity/E39PCGwPFBDk9BWXJpjDkYYvwP,
        https://id.oclc.org/worldcat/entity/E39PCFHvj9fQRrFqQDmhwCk8VK,
        https://id.oclc.org/worldcat/entity/E39PCGM386rvv8P9JFrwpbpvBP,
        https://id.oclc.org/worldcat/entity/E39PCGfdRtmqkxbWMhdBhQmgTd,
        https://id.oclc.org/worldcat/entity/E39PCH6yCcQrtRVBjbRC33Crmb,
        https://id.oclc.org/worldcat/entity/E39PCFRCF8HDBtJDgJH3KXpvwP,
        https://id.oclc.org/worldcat/entity/E39PCGFxfjTP8JqkWcbjfV6TxP,
        https://id.oclc.org/worldcat/entity/E39PCFXB6yGvwxxv3pqPQkCKgq,
        https://id.oclc.org/worldcat/entity/E39PCGrBrKhWPT33ggdxd3C9tC,
        https://id.oclc.org/worldcat/entity/E39PCFJWggV4BxpVkcM33fPM6C,
        https://id.oclc.org/worldcat/entity/E39PCFPBmKtQTDffjkDwhmXqV3,
        https://id.oclc.org/worldcat/entity/E39PCGPvd3Dpy93H8mMDRG78md,
        https://id.oclc.org/worldcat/entity/E39PCGJx3QHqWFVmYd3GQjfhjK,
        https://id.oclc.org/worldcat/entity/E39PCGhJmtVgJbTTvJpx9kTwT3,
        https://id.oclc.org/worldcat/entity/E39PCGRMRXDDhhMVHRbqPhBbQy,
        https://id.oclc.org/worldcat/entity/E39PCFH3RH3PqmXvb3RrTBFfWP,
        https://id.oclc.org/worldcat/entity/E39PCG4j9xKtRrXDQrq9Jpyq8K,
        https://id.oclc.org/worldcat/entity/E39PCH6hbqYwdkyjQQV7gP93Bd,
        https://id.oclc.org/worldcat/entity/E39PCGKYPyHbvmBDqKJGtw9Mj3,
        https://id.oclc.org/worldcat/entity/E39PCGKTVKxx3C6KhXkcCkVVyb,
        https://id.oclc.org/worldcat/entity/E39PCGKfjfxyk8w7TgMGTgWfVP,
        https://id.oclc.org/worldcat/entity/E39PCGqD7vvGkRDBWvxkv44MMX,
        https://id.oclc.org/worldcat/entity/E39PCFKQwwMjWkWqgGxGtmhpKd,
        https://id.oclc.org/worldcat/entity/E39PCFxjxVw7wyD8Vb4JWyGg83,
        https://id.oclc.org/worldcat/entity/E39PCGfxCrtPG6gy784KkKC7tq,
        https://id.oclc.org/worldcat/entity/E39PCFD9GT8fMk7MgmxXF9gWQq,
        https://id.oclc.org/worldcat/entity/E39PCFQCYByDxvF6xjQ8QcjdpK,
        https://id.oclc.org/worldcat/entity/E39PCGfQJfQcKtjxwg3qKFVJrC,
        https://id.oclc.org/worldcat/entity/E39PCFDtBRjC6HDhJRBQB7HYKd,
        https://id.oclc.org/worldcat/entity/E39PCG3vRr7VCRg3GVXc4rHQv3,
        https://id.oclc.org/worldcat/entity/E39PCH74XgyvfkKhrwXhKpc7BK,
        https://id.oclc.org/worldcat/entity/E39PCGtxmyT64qgcGHM8fcWg4y,
        https://id.oclc.org/worldcat/entity/E39PCG3KwQWTWXFqHBGKt3fHFq,
        https://id.oclc.org/worldcat/entity/E39PCG37qDm98H7RYCtqd6ygjy,
        https://id.oclc.org/worldcat/entity/E39PCG9KC6CC68TYJB8KWTGrMd,
        https://id.oclc.org/worldcat/entity/E39PCGwHDQH7TfWKbFYrm8dRcd,
        https://id.oclc.org/worldcat/entity/E39PCG3kYtcVVMDhFdXDjxXvtq,
        https://id.oclc.org/worldcat/entity/E39PCGFRW6c3MMqgKRgkQTg8Q3,
        https://id.oclc.org/worldcat/entity/E39PCGKRgGwFkjqq3YV79TwGMd,
        https://id.oclc.org/worldcat/entity/E39PCGCgjk3bfCkhyQXRCrHtDm,
        https://id.oclc.org/worldcat/entity/E39PCGFB9dVwHMQHWdc9yQYByd,
        https://id.oclc.org/worldcat/entity/E39PCGq3vmVhW6Kpc8FFQTmwyb,
        https://id.oclc.org/worldcat/entity/E39PCGbqhm8frCPmjqKyM9hm3P,
        https://id.oclc.org/worldcat/entity/E39PCGxcrtWQCKPP8WVPG4jdw3,
        https://id.oclc.org/worldcat/entity/E39PCGmrW4yrmyXY9cCRxJxGQC,
        https://id.oclc.org/worldcat/entity/E39PCFVWDgqgHjYT8FmRtGcdcP,
        https://id.oclc.org/worldcat/entity/E39PCFQrwGGCXyByF6RRRymY8C,
        https://id.oclc.org/worldcat/entity/E39PCGBqB6R6xBpYQJYWbt8YKd,
        https://id.oclc.org/worldcat/entity/E39PCFt8GyJDJ6PmbRbDxVdrYP,
        https://id.oclc.org/worldcat/entity/E39PCGyCMgbvGMMp6wRct97ktC,
        https://id.oclc.org/worldcat/entity/E39PCGxG8F7vdqbqd9rbj9rQbd,
        https://id.oclc.org/worldcat/entity/E39PCH8JWhJgtRXbFcrGDjPwyd,
        https://id.oclc.org/worldcat/entity/E39PCFQqBP7r8b8YbjFWtyhKtX,
        https://id.oclc.org/worldcat/entity/E39PCG48V4rfkfqbxDMdFrvhtq,
        https://id.oclc.org/worldcat/entity/E39PCGGqKFqTYRBTXXKcC8hBHd,
        https://id.oclc.org/worldcat/entity/E39PCGBWW6vqG44Gr8y6xgQykC,
        https://id.oclc.org/worldcat/entity/E39PCGY7bvhmqcrrb9PDtyPh9C,
        https://id.oclc.org/worldcat/entity/E39PCGcxHxYcHk9wxtd9xYdb3P,
        https://id.oclc.org/worldcat/entity/E39PCGmFx3hmbJWdTRCwDTKWpd,
        https://id.oclc.org/worldcat/entity/E39PCFGr7kpCHVq4dmvv6PxmtX,
        https://id.oclc.org/worldcat/entity/E39PCFC9Y8ymJXV4cXy6hp47wP,
        https://id.oclc.org/worldcat/entity/E39PCFtqFyJKgm74m7Thvh7d8K,
        https://id.oclc.org/worldcat/entity/E39PCGH3Rdt6RyjRvKCCXtbkym,
        https://id.oclc.org/worldcat/entity/E39PCGDkfM8ppXxkykGCFkt83P,
        https://id.oclc.org/worldcat/entity/E39PCGJTwYwQHhGxqQxp3mCcGd,
        https://id.oclc.org/worldcat/entity/E39PCH78xp94HWJx3CbbdG34v3,
        https://id.oclc.org/worldcat/entity/E39PCFBKxgbdgfQ6hV4TPgwm7d,
        https://id.oclc.org/worldcat/entity/E39PCGyY4cpjcXyRxdtdJdMC6X,
        https://id.oclc.org/worldcat/entity/E39PCGf9bJ88tH7PmcycktdtPP,
        https://id.oclc.org/worldcat/entity/E39PCG4mKcgDDHW79dJcGqKHP3,
        https://id.oclc.org/worldcat/entity/E39PCGT8TjCFy7dgy76W33BgKd,
        https://id.oclc.org/worldcat/entity/E39PCFB3G9fgbykVbVgDTTWKJP,
        https://id.oclc.org/worldcat/entity/E39PCGhYgQFqm9HQtVxtdjXFfC,
        https://id.oclc.org/worldcat/entity/E39PCGDcCXCbGD6bmXHFDdcFJC,
        https://id.oclc.org/worldcat/entity/E39PCFFXQG69GMttCfjMGX6GwP,
        https://id.oclc.org/worldcat/entity/E39PCFXb36fgP4gT47kcvDG6qP,
        https://id.oclc.org/worldcat/entity/E39PCGrqKXMJhXmj6mhtMDJkXd,
        https://id.oclc.org/worldcat/entity/E39PCGdBhWKDCjyGXPcMbV6HqP,
        https://id.oclc.org/worldcat/entity/E39PCFDJTpdBkKct9G3DjCMXVC,
        https://id.oclc.org/worldcat/entity/E39PCFYMCxt3gHRyqqwJwP6Myd,
        https://id.oclc.org/worldcat/entity/E39PCG6gK8bFHw7m93yhM6qk9P,
        https://id.oclc.org/worldcat/entity/E39PCH7fMgr96MpFrvR6QXJHJC,
        https://id.oclc.org/worldcat/entity/E39PCFt3QVXpq4DMT3vkMQRywK,
        https://id.oclc.org/worldcat/entity/E39PCFG86GMCBQWrfRQtD8HqDC,
        https://id.oclc.org/worldcat/entity/E39PCGdMBTX9W99CCCdcVGcpj3,
        https://id.oclc.org/worldcat/entity/E39PCGD9xhdJTBj9mfrxhM8bq3,
        https://id.oclc.org/worldcat/entity/E39PCGkhmmp3Wf3WG6FWT33QpX,
        https://id.oclc.org/worldcat/entity/E39PCGdPh6TT9Hkj8tFgmHygTd,
        https://id.oclc.org/worldcat/entity/E39PCFDk4pgpBPVd6h4DPyqBpq,
        https://id.oclc.org/worldcat/entity/E39PCGkQ4QwxtrdVFFbJJrgc4C,
        https://id.oclc.org/worldcat/entity/E39PCG6t6YBb6jDMWhC979xBCP,
        https://id.oclc.org/worldcat/entity/E39PCFMJWbWRkHKvC9rmTMjkCP,
        https://id.oclc.org/worldcat/entity/E39PCFBdfc7JpHvJPjFfpjrbbd,
        https://id.oclc.org/worldcat/entity/E39PCGHHbkvgk3YccFYjjtcmwK,
        https://id.oclc.org/worldcat/entity/E39PCGywqF6B9XrGR8mfYffFyq,
        https://id.oclc.org/worldcat/entity/E39PCGbm6dHMkD87CHTykW4dHC,
        https://id.oclc.org/worldcat/entity/E39PCGkfmtwkVFhMXtBgp6wHRX,
        https://id.oclc.org/worldcat/entity/E39PCGHWTPfXM6vKFfytJgk79C,
        https://id.oclc.org/worldcat/entity/E39PCGkB7WpVRj4QYbPG7ywjYP,
        https://id.oclc.org/worldcat/entity/E39PCFWbf3D8FFKXHkJpVPcK8d,
        https://id.oclc.org/worldcat/entity/E39PCGtV3CpKgcB8wJrx3DY773,
        https://id.oclc.org/worldcat/entity/E39PCGhMQXgkkTDkX34dDqwTtq,
        https://id.oclc.org/worldcat/entity/E39PCH7tfrPcHr6VjXRG9F6Frq,
        https://id.oclc.org/worldcat/entity/E39PCGRy9gkdvTPC6y8FyqBybd,
        https://id.oclc.org/worldcat/entity/E39PCG6vTfQWFVKFcm3kVB7XQy,
        https://id.oclc.org/worldcat/entity/E39PCG6Y8HKPdT8ypWc7ygKXtX,
        https://id.oclc.org/worldcat/entity/E39PCGGFTr9MqjpkhprGMDDg8C,
        https://id.oclc.org/worldcat/entity/E39PCGFjhTgrt49R4WG8ddmyBP,
        https://id.oclc.org/worldcat/entity/E39PCGVWgyfhgRTmXxVC7mVYGd,
        https://id.oclc.org/worldcat/entity/E39PCFY9JBqcqcgVJ7wYjt9vH3,
        https://id.oclc.org/worldcat/entity/E39PCFTjgD34Vykk666rPkp49C,
        https://id.oclc.org/worldcat/entity/E39PCGr3bVmFBCxgbqkFqqKcRq,
        https://id.oclc.org/worldcat/entity/E39PCGxdtJWvfhVg4VVKyXwGf3,
        https://id.oclc.org/worldcat/entity/E39PCGkD8VMd3kJMr7MqJRhxH3,
        https://id.oclc.org/worldcat/entity/E39PCG7HQyyt7r4JmXVfV6qb3P,
        https://id.oclc.org/worldcat/entity/E39PCGhbGftxvFVP3gmhRRvF4y,
        https://id.oclc.org/worldcat/entity/E39PCGFpmjTTHmVgJTdxbDvpGd,
        https://id.oclc.org/worldcat/entity/E39PCGBwyT3hdHRgVCPbxYJ6mm,
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