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Badge API

The Badge API is built with express, node and typescript. It allows clients to make, accept and delete assertions in the context of Open Badges (https://www.imsglobal.org/sites/default/files/Badges/OBv2p0Final/index.html). It also allows the client to get data from badgeclasses, assertions and the issuer (in this API, the issuer is WiseBadges), as well as get all assertions from a certain badge class. The API also makes it possible to get a download link for a verifiable Open Badge from an assertion.

Contributing: For bugs or problems: please open an issue. Want to help more? Check out the whole project!

The whole project: https://github.com/Wise-Badges/documentation/wiki

Documentation

API url: https://api.wisebadges.osoc.be/

front-end url: https://wisebadges.osoc.be/

GET REQUESTS: LISTS OF BADGECLASSES & ASSERTIONS

Get all badgeclasses

This will show a list of all possible badgeclasses, paginated and sorted on name (alphabetically).

  • URL: /badgeclasses

  • Method: GET

  • URL Params:

Optional

  • "fields": choose which fields you want to be shown in the results

    possibilities: type, "@context", name, description, criteria, image, issuer, tag, figure, id

    default: all fields will be shown

    example: assertions/?fields=description,id,criteria

  • "page": show which page you want to see

    default: 1

    example: badgeclasses/?page=5

  • "limit": how many badgeclasses you want to get on one page

    default: 20

    max: 50

    example: badgeclasses/?limit=30

    Example combined

    https://api.wisebadges.osoc.be/badgeclasses/?fields=id,name&limit=40&page=6

  • Data Params: None

  • Success Response:

    • Code: 200 / 304
      Content: 
      {
    "current": "https://api.wisebadges.osoc.be/badgeclasses/?page=1&limit=20",
    "totalPageCount": 1,
    "totalItemCount": 1,
    "limit": 20,
    "data": [
    {
    "criteria": {
    "narrative": "Explanation of why you should give this badge."
    },
    "@context": "https://w3id.org/openbadges/v2",
    "type": "BadgeClass",
    "name": "Example Badge",
    "description": "Short description of the badge.",
    "image": "https://api.wisebadges.osoc.be/images/example.png",
    "issuer": "https://api.wisebadges.osoc.be/issuer",
    "tag": "ExampleBadge",
    "figure": "hexagon",
    "id": "https://api.wisebadges.osoc.be/badgeclass/5f1ea43b77630a8b91a295c8"
    }
   ]
      • note: if their are more pages: next and previous page links are also listed in the result (see example content in "get all assertions")

  • Error Response:

    • Code: 500 INTERNAL ERROR

Get all assertions

This will show a list of all issued assertions, there are many ways to modify this request: for example only seeing the assertions that have been accepted. The results are sorted on "issuedOn", so the date of issuing (newest first).

  • URL: /assertions

  • Method: GET

  • URL Params:

Optional

  • "fields": choose which fields you want to be shown in the results

    possibilities: recipient, "@context", type, badge, issuedOn, evidence, verification, accepted, id

    default: all fields will be shown

    example: assertions/?fields=recipient,id,badge

  • "accepted": filter out assertions that are accepted or those that are still unaccepted

    possibilities: true, false

    default: all assertions

    example: assertions/?accepted=true

  • "page": show which page you want to see

    default: 1

    example: assertions/?page=5

  • "limit": how many assertions you want to get on one page

    default: 20

    max: 50

    example: assertions/?limit=30

    Example combined

    https://api.wisebadges.osoc.be/assertions/?fields=id,badge&limit=25&page=3&accepted=true

  • Data Params: None

  • Success Response:

    • Code: 200 / 304
      Content: 
       {
  "current": "https://api.wisebadges.osoc.be/assertions/?page=3&limit=20",
  "totalPageCount": 11,
  "totalItemCount": 219,
  "limit": 20,
  "previous": "https://api.wisebadges.osoc.be/assertions/?page=2&limit=20",
  "next": "https://api.wisebadges.osoc.be/assertions/?page=4&limit=20",
  "data": [
  {
    "recipient": {
    "type": "url",
    "hashed": false,
    "identity": "https://twitter.com/WardBeyens",
    "name": "Ward Beyens"
    },
    "evidence": {
    "id": "https://twitter.com/WardExtra/status/1287720988390690817",
    "narrative": "Issued with twitterby WardBeyensExtra (https://twitter.com/WardExtra)."
    },
    "accepted": false,
    "@context": "https://w3id.org/openbadges/v2",
    "type": "Assertion",
    "badge": "https://api.wisebadges.osoc.be/badgeclass/5f1ea43b77630a8b91a295c8",
    "issuedOn": "Mon Jul 27 2020 12:06:23 GMT+0000 (Coordinated Universal Time)",
    "verification": {
    "type": "hosted"
    },
    "id": "https://api.wisebadges.osoc.be/assertion/5f1ec33f90c8d21738df464a",
    "answer" : "https://twitter.com/WiseBadges/status/1288390856592982016"
  }
 ]
      • note: default of "answer" is an empty string ("")

  • Error Response:

    • Code: 500 INTERNAL ERROR

Get all assertions from a badgeclass

This will show a list of all issued assertions from a given badgeclass.The results are sorted on "issuedOn", so the date of issuing (newest first).

  • URL: /badgeclass/:id/assertions

  • Method: GET

  • URL Params:

Optional

  • "fields": choose which fields you want to be shown in the results

    possibilities: recipient, "@context", type, badge, issuedOn, evidence, verification, accepted, id

    default: all fields will be shown

    example: assertions/?fields=recipient,id,badge

  • "accepted": filter out assertions that are accepted or those that are still unaccepted

    possibilities: true, false

    default: all assertions

    example: assertions/?accepted=true

  • "page": show which page you want to see

    default: 1

    example: assertions/?page=5

  • "limit": how many assertions you want to get on one page

    default: 20

    max: 50

    example: assertions/?limit=30

    Example combined

    https://api.wisebadges.osoc.be/badgeclass/5f1ea43b77630a8b91a295c8/assertions/?fields=id,badge&limit=25&page=3&accepted=true

  • Data Params: None

  • Success Response:

    • Code: 200 / 304
      Content: Same as "Get all assertions"

  • Error Response:

    • Code: 500 INTERNAL ERROR

GET REQUESTS: DETAILS OF ISSUER, BADGECLASS & ASSERTION

Get the issuer

This will show the json/details of the issuer.

  • URL: /issuer

  • Method: GET

  • URL Params: None

  • Data Params None

  • Success Response:

    • Code: 200 / 304
      Content: 
      {
"@context": "https://w3id.org/openbadges/v2",
"type": "Issuer",
"id": "https://api.wisebadges.osoc.be/issuer",
"name": "WISE Badges",
"url": "https://wisebadges.osoc.be/",
"email": "wise@osoc.be",
"image": "https://api.wisebadges.osoc.be/images/wisebadges.png"
}

  • Error Response:

    • Code: 500 INTERNAL ERROR

Get a badgeclass

This will show the details of a certain badgeclass (given an id)

  • URL: /badgeclass/:id

  • Method: GET

  • URL Params:

id: id of the badgeclass

  • Data Params None

  • Success Response:

    • Code: 200 / 304
      Content: 
      {
  "criteria": {
  "narrative": "Explanation of why you should give this badge."
  },
  "@context": "https://w3id.org/openbadges/v2",
  "type": "BadgeClass",
  "name": "Example Badge",
  "description": "Short description of the badge.",
  "image": "https://api.wisebadges.osoc.be/images/example.png",
  "issuer": "https://api.wisebadges.osoc.be/issuer",
  "tag": "ExampleBadge",
  "figure": "hexagon",
  "id": "https://api.wisebadges.osoc.be/badgeclass/5f1ea43b77630a8b91a295c8"
}
      • note: "figure" is for front-end purposes (what shape the image has), this should eventually be moved to frond-end

  • Error Response:

    • Code: 404 NOT FOUND

    OR

    • Code: 500 INTERNAL ERROR

Get an assertion

This will show the details of an assertion (given an id)

  • URL: /assertion/:id

  • Method: GET

  • URL Params:

id: id of the assertion

  • Data Params None

  • Success Response:

    • Code: 200 / 304
      Content: 
      {
"recipient": {
"type": "url",
"hashed": false,
"identity": "https://twitter.com/WardBeyens",
"name": "Ward Beyens"
},
"evidence": {
"id": "https://twitter.com/WardExtra/status/1287720988390690817",
"narrative": "Issued using twitter by WardBeyensExtra (https://twitter.com/WardExtra)."
},
"accepted": false,
"@context": "https://w3id.org/openbadges/v2",
"type": "Assertion",
"badge": "https://api.wisebadges.osoc.be/badgeclass/5f1ea43b77630a8b91a295c8",
"issuedOn": "Mon Jul 27 2020 12:06:23 GMT+0000 (Coordinated Universal Time)",
"verification": {
"type": "hosted"
},
"id": "https://api.wisebadges.osoc.be/assertion/5f1ec33f90c8d21738df464a",
 "answer" : "https://twitter.com/WiseBadges/status/1288390856592982016"
}
      • note: default of "answer" is an empty string ("")

  • Error Response:

    • Code: 404 NOT FOUND

    OR

    • Code: 500 INTERNAL ERROR

GET REQUESTS: OTHER

Get a download link of verifiable Open Badge

When sending GET request on this URL, the client will download an Open Badge based on a certain assertion.

  • URL: /assertion/:id/badge

  • Method: GET

  • URL Params:

id: id of the assertion

  • Data Params None

  • Success Response:

    • Code: 200 / 304
      Content: file download

  • Error Response:

    • Code: 404 NOT FOUND
      Content: 
      {"Error": "No assertion/badgeclass/image found."}

    OR

    • Code: 500 INTERNAL ERROR

POST/PATCH/DELETE REQUESTS: CREATE, ACCEPT, DELETE AND ADD TO ASSERTION

Create an assertion

Given some parameters, this method will create an Assertion (https://www.imsglobal.org/sites/default/files/Badges/OBv2p0Final/index.html#Assertion) and return the json formatted assertion and the front-end html version.

  • URL: /assertion

  • Method: POST

  • URL Params: None

  • Data Params

    Required

    "receiver": url of the person who's receiving the badge

    "receiverName": name / username of the receiver

    "sender": url of the person who's sending the badge

    "senderName": name / username of the sender

    "platform": which platform is being used to send the badge (e.g. Twitter, Facebook, ..)

    "reason": url to the post that references someone sending a badge

    "badgeclass": url of the badgeclass (this can be ANY badgeclass, also ones not belonging to this API!)

    Example body

    {
 "receiver": "https://twitter.com/bobD",
 "receiverName": "Bob D.",
 "sender": "https://twitter.com/susanna",
 "senderName": "Susanna",
 "platform": "twitter",
 "reason": "https://twitter.com/sometweet123",
 "badgeclass": "https://api.wisebadges.osoc.be/badgeclass/5f1ea43b77630a8b91a295c8"
}

  • Success Response:

    • Code: 200 / 304
      Content: 
      {
 "json": "https://api.wisebadges.osoc.be/assertion/5f15ab65a546d6ce7861b12e",
 "html": "https://wisebadges.osoc.be/detail/5f15ab65a546d6ce7861b12e"
}
      • note: "html" is the link to the front end webpage, showing the download button etc., "json" links to the json of the assertion itself

  • Error Response:

    • Code: 400 BAD REQUEST
      Content:

      [{ "value": "https://twitter/sender/sometweet123",
  "msg": "Reason should be a (valid) URL linking to a Twitter/Facebook/... post.",
  "param": "reason",
  "location": "body"}
  ]
      • note: "valid" here means it should have valid URL syntax, there is no checking if the webpage actually exists OR

    • Code: 500 INTERNAL ERROR

Add answer to assertion

Given some parameters, this method will create an Assertion (https://www.imsglobal.org/sites/default/files/Badges/OBv2p0Final/index.html#Assertion) and return the json formatted assertion and the front-end html version.

  • URL: /assertion/:id/answer

  • Method: PATCH

  • URL Params: None

  • Data Params

    Required

    "answer": After posting on a WiseBadge platform, the link of this post could be given here. (This could also be any URL/content you might need in the future)

    Example body

    {
 "answer": "https://twitter.com/WiseBadges/status/1288390856592982016",
}

  • Success Response:

    • Code: 200

  • Error Response:

    • Code: 400 BAD REQUEST
      Content:

       { "error": "No answer field specified." }
      • note: Here we give you the freedom to add any string, even an empty one OR

    • Code: 500 INTERNAL ERROR

Delete an assertion

When wanting to remove an open badge, we need to remove the assertion. So the given assertion will be removed. Only the recipient/sender should be able to do this.

  • URL: /assertion/:id

  • Method: DELETE

  • URL Params:

id: id of the assertion to be deleted

  • Data Params None

  • Success Response:

  • Success Response:

    • Code: 200 / 304

  • Error Response:

    • Code: 500 INTERNAL ERROR

Accept a badge / assertion

Before the recipient will be shown on any data visualisation / listed as a recipient of the badge, the recipient has to accept the badge. This will change a badge from unaccepted to accepted. Make sure only the recipient can do this.

  • URL: /assertion/:id

  • Method: PATCH

  • URL Params:

id: id of the assertion to be deleted

  • Data Params None

  • Success Response:

    • Code: 200 / 304

  • Error Response:

    • Code: 500 INTERNAL ERROR

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