Embase Search/Retrieval API

This represents the search and retrieval interfaces associated with Embase.

Summary

Resource Method Description
https://api.elsevier.com/content/embase/article GET
Embase Search API: This represents a search against the EMBASE content.
https://api.elsevier.com/content/embase/article/lui/{lui} GET
Embase Retrieval API (LUI): This represents an article retrieval using a LUI (internal identifier).
https://api.elsevier.com/content/embase/article/pii/{pii} GET
Embase Retrieval API (PII): This represents an article retrieval using a PII (Publication Item Identifier).
https://api.elsevier.com/content/embase/article/doi/{doi} GET
Embase Retrieval API (DOI): This represents an article retrieval using a DOI (Document Object Identifier).
https://api.elsevier.com/content/embase/article/embase/{id} GET
Embase Retrieval API (EMBASE): This represents an article retrieval using Embase Accession Number.
https://api.elsevier.com/content/embase/article/pubmed_id/{id} GET
Embase Retrieval API (PUBMED_ID): This represents an article retrieval using a MEDLINE PubMed Identifier.
https://api.elsevier.com/content/embase/article/medline/{id} GET
Embase Retrieval API (MEDLINE): This represents an article retrieval using a MEDLINE PubMed Identifier.

Resources


https://api.elsevier.com/content/embase/article

Embase Search API: This represents a search against the EMBASE content.

Methods
GET simple()

request
header params
Accept xsd:string
(required)
default: application/json
options: application/json, application/xml
This represents the acceptable mime types in which the response can be generated. This can also be submitted as the query string parameter "httpaccept". This returns the response in JSON, ATOM, or XML mark-up.
Authorization xsd:string This header field contains the OAuth bearer access token in which the format of the field is "Bearer <token>" (where the token represents the end-user session key). The presence of a bearer token implies the request will be executed against user-based entitlements. The Authorization field overrides X-ELS-Authtoken.
X-ELS-APIKey xsd:string
(required)
This represents a unique application developer key providing access to API resources. This key can also be submitted as the query string parameter "apiKey"
X-ELS-Authtoken xsd:string This represents a end-user session. If provided, this token is used to validate the credentials needed to access content in this resource. This token can also be submitted through the HTTP header "Authorization" or the query string parameter "access_token".
X-ELS-Insttoken xsd:string This represents a institution token. If provided, this key (in combination with its associated APIKey) is used to establish the credentials needed to access content in this resource. This token can also be provided through the query string parameter "insttoken".
X-ELS-ReqId xsd:string This is a client-defined request identifier, which will be logged in all trace messages of the service. This identifier can be used to track a specific transaction in the service's message logs. It will also be returned as an HTTP header in the corresponding response. Note that this should be a unique identifier for the client, and used to track a single transaction.

query params
httpaccept xsd:string
options: application/json, application/xml
Override for HTTP header Accept, this represents the acceptable mime types in which the response can be generated.
access_token xsd:string Override for HTTP header Authorization, this contains the OAuth bearer access token, where the format of the field is "token>" (where the token represents the end-user session key). The presence of a bearer token implies the request will be executed against user-based entitlements.
insttoken xsd:string Override for HTTP header X-ELS-Insttoken, this represents a institution token. If provided, this key (in combination with its associated APIKey) is used to establish the credentials needed to access content in this resource.
apiKey xsd:string Override for HTTP header X-ELS-APIKey, this represents a unique application developer key providing access to resource.
reqId xsd:string Override for HTTP header X-ELS-ReqId, this is a client-defined request identifier, which will be logged in all trace messages of the service. This identifier can be used to track a specific transaction in the service's message logs. Note that this should be a unique identifier for the client, and used to track a single transaction.
query xsd:string
(required)


This represents the boolean search to be executed against the EMBASE content. The query should be provided in CommandLanguage syntax. One of parameters query or alertid is required



ex. query=heart+attack%20AND%20mati
alertid xsd:string
(required)


The encoded alert Id. Query is taken from the corresponding alert. Represents base64 string, which can be found e.g. in email alert. Should be url encoded. One of parameters query or alertid is required.
start xsd:string
default: 1


Numeric value representing the results position (i.e. starting position for the search results). The maximum for this value is a system-level default (varies with search cluster) minus the number of results requested. If not specified the offset will be set to 1 (i.e. first search result)



ex. start=5
count xsd:string
default: 25


Numeric value representing the maximum number of results to be returned for the search. If not provided this will be set to a system default based on service level.

In addition the number cannot exceed the maximum system default - if it does an error will be returned.



ex. count=10
sort xsd:string
default: relevance
options: entrydate, publicationyear, relevance


The sorting option for the results returned.



ex. sort=entrydate

responses
status:
200
representations
application/json Embase Search JSON Response: This is XML representing the requested resource. JSON Example
status:
200
representations
application/xml Embase Search XML Response: This is XML representing the requested resource. XML Example
status:
400
representations
text/xml Invalid Request: This is an error that occurs when invalid information is submitted. Invalid Request Example
status:
401
representations
text/xml Authentication Error: This is an error that occurs when a user cannot be authenticated due to missing/invalid credentials (authtoken or APIKey). Authentication Error Example
status:
403
representations
text/xml Authorization/Entitlements Error: This is an error that occurs when a user cannot be authenticated or entitlements cannot be validated. Authorization Error Example
status:
404
representations
text/xml Resource Not Found: This is an error that occurs when the request resource cannot be found. Resource Not Found Example
status:
405
representations
text/xml Invalid HTTP Method: This is an error that occurs when the requested HTTP Method is invalid. Invalid Method Example
status:
406
representations
text/xml Invalid Mime Type: This is an error that occurs when the requested mime type is invalid. Invalid Mime Type Example
status:
429
representations
text/xml Quota Exceeded: This is an error that occurs when a requester has exceeded the quota limits associated with their API Key. Quota Exceeded Example
status:
500
representations
text/xml Generic Error: This is a general purpose error condition, typically due to back-end processing errors. Generic Error Example

https://api.elsevier.com/content/embase/article/lui/{lui}

Embase Retrieval API (LUI): This represents an article retrieval using a LUI (internal identifier).

Methods
GET simple()

request
header params
Accept xsd:string
(required)
default: application/json
options: application/json, application/xml
This represents the acceptable mime types in which the response can be generated. This can also be submitted as the query string parameter "httpAccept". This returns the response in JSON, ATOM, or XML mark-up.
Authorization xsd:string This header field contains the OAuth bearer access token in which the format of the field is "Bearer <token>" (where the token represents the end-user session key). The presence of a bearer token implies the request will be executed against user-based entitlements. The Authorization field overrides X-ELS-Authtoken.
X-ELS-APIKey xsd:string
(required)
This represents a unique application developer key providing access to API resources. This key can also be submitted as the query string parameter "apiKey"
X-ELS-Authtoken xsd:string This represents a end-user session. If provided, this token is used to validate the credentials needed to access content in this resource. This token can also be submitted through the HTTP header "Authorization" or the query string parameter "access_token".
X-ELS-Insttoken xsd:string This represents a institution token. If provided, this key (in combination with its associated APIKey) is used to establish the credentials needed to access content in this resource. This token can also be provided through the query string parameter "insttoken".
X-ELS-ReqId xsd:string This is a client-defined request identifier, which will be logged in all trace messages of the service. This identifier can be used to track a specific transaction in the service's message logs. It will also be returned as an HTTP header in the corresponding response. Note that this should be a unique identifier for the client, and used to track a single transaction.

query params
httpaccept xsd:string
options: application/json, application/xml
Override for HTTP header Accept, this represents the acceptable mime types in which the response can be generated.
access_token xsd:string Override for HTTP header Authorization, this contains the OAuth bearer access token, where the format of the field is "<token>" (where the token represents the end-user session key). The presence of a bearer token implies the request will be executed against user-based entitlements.
insttoken xsd:string Override for HTTP header X-ELS-Insttoken, this represents a institution token. If provided, this key (in combination with its associated APIKey) is used to establish the credentials needed to access content in this resource.
apiKey xsd:string Override for HTTP header X-ELS-APIKey, this represents a unique application developer key providing access to resource.
reqId xsd:string Override for HTTP header X-ELS-ReqId, this is a client-defined request identifier, which will be logged in all trace messages of the service. This identifier can be used to track a specific transaction in the service's message logs. Note that this should be a unique identifier for the client, and used to track a single transaction.

responses
status:
200
representations
application/json Embase Article JSON Response: This is XML representing the requested document. JSON Example
status:
200
representations
application/xml Embase Article XML Response: This is XML representing the requested document. XML Example
status:
400
representations
text/xml Invalid Request: This is an error that occurs when invalid information is submitted. Invalid Request Example
status:
401
representations
text/xml Authentication Error: This is an error that occurs when a user cannot be authenticated due to missing/invalid credentials (authtoken or APIKey). Authentication Error Example
status:
403
representations
text/xml Authorization/Entitlements Error: This is an error that occurs when a user cannot be authenticated or entitlements cannot be validated. Authorization Error Example
status:
404
representations
text/xml Resource Not Found: This is an error that occurs when the request resource cannot be found. Resource Not Found Example
status:
405
representations
text/xml Invalid HTTP Method: This is an error that occurs when the requested HTTP Method is invalid. Invalid Method Example
status:
406
representations
text/xml Invalid Mime Type: This is an error that occurs when the requested mime type is invalid. Invalid Mime Type Example
status:
429
representations
text/xml Quota Exceeded: This is an error that occurs when a requester has exceeded the quota limits associated with their API Key. Quota Exceeded Example
status:
500
representations
text/xml Generic Error: This is a general purpose error condition, typically due to back-end processing errors. Generic Error Example

https://api.elsevier.com/content/embase/article/pii/{pii}

Embase Retrieval API (PII): This represents an article retrieval using a PII (Publication Item Identifier).

Methods
GET simple()

request
header params
Accept xsd:string
(required)
default: application/json
options: application/json, application/xml
This represents the acceptable mime types in which the response can be generated. This can also be submitted as the query string parameter "httpAccept". This returns the response in JSON, ATOM, or XML mark-up.
Authorization xsd:string This header field contains the OAuth bearer access token in which the format of the field is "Bearer <token>" (where the token represents the end-user session key). The presence of a bearer token implies the request will be executed against user-based entitlements. The Authorization field overrides X-ELS-Authtoken.
X-ELS-APIKey xsd:string
(required)
This represents a unique application developer key providing access to API resources. This key can also be submitted as the query string parameter "apiKey"
X-ELS-Authtoken xsd:string This represents a end-user session. If provided, this token is used to validate the credentials needed to access content in this resource. This token can also be submitted through the HTTP header "Authorization" or the query string parameter "access_token".
X-ELS-Insttoken xsd:string This represents a institution token. If provided, this key (in combination with its associated APIKey) is used to establish the credentials needed to access content in this resource. This token can also be provided through the query string parameter "insttoken".
X-ELS-ReqId xsd:string This is a client-defined request identifier, which will be logged in all trace messages of the service. This identifier can be used to track a specific transaction in the service's message logs. It will also be returned as an HTTP header in the corresponding response. Note that this should be a unique identifier for the client, and used to track a single transaction.

query params
httpaccept xsd:string
options: application/json, application/xml
Override for HTTP header Accept, this represents the acceptable mime types in which the response can be generated.
access_token xsd:string Override for HTTP header Authorization, this contains the OAuth bearer access token, where the format of the field is "<token>" (where the token represents the end-user session key). The presence of a bearer token implies the request will be executed against user-based entitlements.
insttoken xsd:string Override for HTTP header X-ELS-Insttoken, this represents a institution token. If provided, this key (in combination with its associated APIKey) is used to establish the credentials needed to access content in this resource.
apiKey xsd:string Override for HTTP header X-ELS-APIKey, this represents a unique application developer key providing access to resource.
reqId xsd:string Override for HTTP header X-ELS-ReqId, this is a client-defined request identifier, which will be logged in all trace messages of the service. This identifier can be used to track a specific transaction in the service's message logs. Note that this should be a unique identifier for the client, and used to track a single transaction.

responses
status:
200
representations
application/json Embase Article JSON Response: This is XML representing the requested document. JSON Example
status:
200
representations
application/xml Embase Article XML Response: This is XML representing the requested document. XML Example
status:
400
representations
text/xml Invalid Request: This is an error that occurs when invalid information is submitted. Invalid Request Example
status:
401
representations
text/xml Authentication Error: This is an error that occurs when a user cannot be authenticated due to missing/invalid credentials (authtoken or APIKey). Authentication Error Example
status:
403
representations
text/xml Authorization/Entitlements Error: This is an error that occurs when a user cannot be authenticated or entitlements cannot be validated. Authorization Error Example
status:
404
representations
text/xml Resource Not Found: This is an error that occurs when the request resource cannot be found. Resource Not Found Example
status:
405
representations
text/xml Invalid HTTP Method: This is an error that occurs when the requested HTTP Method is invalid. Invalid Method Example
status:
406
representations
text/xml Invalid Mime Type: This is an error that occurs when the requested mime type is invalid. Invalid Mime Type Example
status:
429
representations
text/xml Quota Exceeded: This is an error that occurs when a requester has exceeded the quota limits associated with their API Key. Quota Exceeded Example
status:
500
representations
text/xml Generic Error: This is a general purpose error condition, typically due to back-end processing errors. Generic Error Example

https://api.elsevier.com/content/embase/article/doi/{doi}

Embase Retrieval API (DOI): This represents an article retrieval using a DOI (Document Object Identifier).

Methods
GET simple()

request
header params
Accept xsd:string
(required)
default: application/json
options: application/json, application/xml
This represents the acceptable mime types in which the response can be generated. This can also be submitted as the query string parameter "httpAccept". This returns the response in JSON, ATOM, or XML mark-up.
Authorization xsd:string This header field contains the OAuth bearer access token in which the format of the field is "Bearer <token>" (where the token represents the end-user session key). The presence of a bearer token implies the request will be executed against user-based entitlements. The Authorization field overrides X-ELS-Authtoken.
X-ELS-APIKey xsd:string
(required)
This represents a unique application developer key providing access to API resources. This key can also be submitted as the query string parameter "apiKey"
X-ELS-Authtoken xsd:string This represents a end-user session. If provided, this token is used to validate the credentials needed to access content in this resource. This token can also be submitted through the HTTP header "Authorization" or the query string parameter "access_token".
X-ELS-Insttoken xsd:string This represents a institution token. If provided, this key (in combination with its associated APIKey) is used to establish the credentials needed to access content in this resource. This token can also be provided through the query string parameter "insttoken".
X-ELS-ReqId xsd:string This is a client-defined request identifier, which will be logged in all trace messages of the service. This identifier can be used to track a specific transaction in the service's message logs. It will also be returned as an HTTP header in the corresponding response. Note that this should be a unique identifier for the client, and used to track a single transaction.

query params
httpaccept xsd:string
options: application/json, application/xml
Override for HTTP header Accept, this represents the acceptable mime types in which the response can be generated.
access_token xsd:string Override for HTTP header Authorization, this contains the OAuth bearer access token, where the format of the field is "<token>" (where the token represents the end-user session key). The presence of a bearer token implies the request will be executed against user-based entitlements.
insttoken xsd:string Override for HTTP header X-ELS-Insttoken, this represents a institution token. If provided, this key (in combination with its associated APIKey) is used to establish the credentials needed to access content in this resource.
apiKey xsd:string Override for HTTP header X-ELS-APIKey, this represents a unique application developer key providing access to resource.
reqId xsd:string Override for HTTP header X-ELS-ReqId, this is a client-defined request identifier, which will be logged in all trace messages of the service. This identifier can be used to track a specific transaction in the service's message logs. Note that this should be a unique identifier for the client, and used to track a single transaction.

responses
status:
200
representations
application/json Embase Article JSON Response: This is XML representing the requested document. JSON Example
status:
200
representations
application/xml Embase Article XML Response: This is XML representing the requested document. XML Example
status:
400
representations
text/xml Invalid Request: This is an error that occurs when invalid information is submitted. Invalid Request Example
status:
401
representations
text/xml Authentication Error: This is an error that occurs when a user cannot be authenticated due to missing/invalid credentials (authtoken or APIKey). Authentication Error Example
status:
403
representations
text/xml Authorization/Entitlements Error: This is an error that occurs when a user cannot be authenticated or entitlements cannot be validated. Authorization Error Example
status:
404
representations
text/xml Resource Not Found: This is an error that occurs when the request resource cannot be found. Resource Not Found Example
status:
405
representations
text/xml Invalid HTTP Method: This is an error that occurs when the requested HTTP Method is invalid. Invalid Method Example
status:
406
representations
text/xml Invalid Mime Type: This is an error that occurs when the requested mime type is invalid. Invalid Mime Type Example
status:
429
representations
text/xml Quota Exceeded: This is an error that occurs when a requester has exceeded the quota limits associated with their API Key. Quota Exceeded Example
status:
500
representations
text/xml Generic Error: This is a general purpose error condition, typically due to back-end processing errors. Generic Error Example

https://api.elsevier.com/content/embase/article/embase/{id}

Embase Retrieval API (EMBASE): This represents an article retrieval using Embase Accession Number.

Methods
GET simple()

request
header params
Accept xsd:string
(required)
default: application/json
options: application/json, application/xml
This represents the acceptable mime types in which the response can be generated. This can also be submitted as the query string parameter "httpAccept". This returns the response in JSON, ATOM, or XML mark-up.
Authorization xsd:string This header field contains the OAuth bearer access token in which the format of the field is "Bearer <token>" (where the token represents the end-user session key). The presence of a bearer token implies the request will be executed against user-based entitlements. The Authorization field overrides X-ELS-Authtoken.
X-ELS-APIKey xsd:string
(required)
This represents a unique application developer key providing access to API resources. This key can also be submitted as the query string parameter "apiKey"
X-ELS-Authtoken xsd:string This represents a end-user session. If provided, this token is used to validate the credentials needed to access content in this resource. This token can also be submitted through the HTTP header "Authorization" or the query string parameter "access_token".
X-ELS-Insttoken xsd:string This represents a institution token. If provided, this key (in combination with its associated APIKey) is used to establish the credentials needed to access content in this resource. This token can also be provided through the query string parameter "insttoken".
X-ELS-ReqId xsd:string This is a client-defined request identifier, which will be logged in all trace messages of the service. This identifier can be used to track a specific transaction in the service's message logs. It will also be returned as an HTTP header in the corresponding response. Note that this should be a unique identifier for the client, and used to track a single transaction.

query params
httpaccept xsd:string
options: application/json, application/xml
Override for HTTP header Accept, this represents the acceptable mime types in which the response can be generated.
access_token xsd:string Override for HTTP header Authorization, this contains the OAuth bearer access token, where the format of the field is "<token>" (where the token represents the end-user session key). The presence of a bearer token implies the request will be executed against user-based entitlements.
insttoken xsd:string Override for HTTP header X-ELS-Insttoken, this represents a institution token. If provided, this key (in combination with its associated APIKey) is used to establish the credentials needed to access content in this resource.
apiKey xsd:string Override for HTTP header X-ELS-APIKey, this represents a unique application developer key providing access to resource.
reqId xsd:string Override for HTTP header X-ELS-ReqId, this is a client-defined request identifier, which will be logged in all trace messages of the service. This identifier can be used to track a specific transaction in the service's message logs. Note that this should be a unique identifier for the client, and used to track a single transaction.

responses
status:
200
representations
application/json Embase Article JSON Response: This is XML representing the requested document. JSON Example
status:
200
representations
application/xml Embase Article XML Response: This is XML representing the requested document. XML Example
status:
400
representations
text/xml Invalid Request: This is an error that occurs when invalid information is submitted. Invalid Request Example
status:
401
representations
text/xml Authentication Error: This is an error that occurs when a user cannot be authenticated due to missing/invalid credentials (authtoken or APIKey). Authentication Error Example
status:
403
representations
text/xml Authorization/Entitlements Error: This is an error that occurs when a user cannot be authenticated or entitlements cannot be validated. Authorization Error Example
status:
404
representations
text/xml Resource Not Found: This is an error that occurs when the request resource cannot be found. Resource Not Found Example
status:
405
representations
text/xml Invalid HTTP Method: This is an error that occurs when the requested HTTP Method is invalid. Invalid Method Example
status:
406
representations
text/xml Invalid Mime Type: This is an error that occurs when the requested mime type is invalid. Invalid Mime Type Example
status:
429
representations
text/xml Quota Exceeded: This is an error that occurs when a requester has exceeded the quota limits associated with their API Key. Quota Exceeded Example
status:
500
representations
text/xml Generic Error: This is a general purpose error condition, typically due to back-end processing errors. Generic Error Example

https://api.elsevier.com/content/embase/article/pubmed_id/{id}

Embase Retrieval API (PUBMED_ID): This represents an article retrieval using a MEDLINE PubMed Identifier.

Methods
GET simple()

request
header params
Accept xsd:string
(required)
default: application/json
options: application/json, application/xml
This represents the acceptable mime types in which the response can be generated. This can also be submitted as the query string parameter "httpAccept". This returns the response in JSON, ATOM, or XML mark-up.
Authorization xsd:string This header field contains the OAuth bearer access token in which the format of the field is "Bearer <token>" (where the token represents the end-user session key). The presence of a bearer token implies the request will be executed against user-based entitlements. The Authorization field overrides X-ELS-Authtoken.
X-ELS-APIKey xsd:string
(required)
This represents a unique application developer key providing access to API resources. This key can also be submitted as the query string parameter "apiKey"
X-ELS-Authtoken xsd:string This represents a end-user session. If provided, this token is used to validate the credentials needed to access content in this resource. This token can also be submitted through the HTTP header "Authorization" or the query string parameter "access_token".
X-ELS-Insttoken xsd:string This represents a institution token. If provided, this key (in combination with its associated APIKey) is used to establish the credentials needed to access content in this resource. This token can also be provided through the query string parameter "insttoken".
X-ELS-ReqId xsd:string This is a client-defined request identifier, which will be logged in all trace messages of the service. This identifier can be used to track a specific transaction in the service's message logs. It will also be returned as an HTTP header in the corresponding response. Note that this should be a unique identifier for the client, and used to track a single transaction.

query params
httpaccept xsd:string
options: application/json, application/xml
Override for HTTP header Accept, this represents the acceptable mime types in which the response can be generated.
access_token xsd:string Override for HTTP header Authorization, this contains the OAuth bearer access token, where the format of the field is "<token>" (where the token represents the end-user session key). The presence of a bearer token implies the request will be executed against user-based entitlements.
insttoken xsd:string Override for HTTP header X-ELS-Insttoken, this represents a institution token. If provided, this key (in combination with its associated APIKey) is used to establish the credentials needed to access content in this resource.
apiKey xsd:string Override for HTTP header X-ELS-APIKey, this represents a unique application developer key providing access to resource.
reqId xsd:string Override for HTTP header X-ELS-ReqId, this is a client-defined request identifier, which will be logged in all trace messages of the service. This identifier can be used to track a specific transaction in the service's message logs. Note that this should be a unique identifier for the client, and used to track a single transaction.

responses
status:
200
representations
application/json Embase Article JSON Response: This is XML representing the requested document. JSON Example
status:
200
representations
application/xml Embase Article XML Response: This is XML representing the requested document. XML Example
status:
400
representations
text/xml Invalid Request: This is an error that occurs when invalid information is submitted. Invalid Request Example
status:
401
representations
text/xml Authentication Error: This is an error that occurs when a user cannot be authenticated due to missing/invalid credentials (authtoken or APIKey). Authentication Error Example
status:
403
representations
text/xml Authorization/Entitlements Error: This is an error that occurs when a user cannot be authenticated or entitlements cannot be validated. Authorization Error Example
status:
404
representations
text/xml Resource Not Found: This is an error that occurs when the request resource cannot be found. Resource Not Found Example
status:
405
representations
text/xml Invalid HTTP Method: This is an error that occurs when the requested HTTP Method is invalid. Invalid Method Example
status:
406
representations
text/xml Invalid Mime Type: This is an error that occurs when the requested mime type is invalid. Invalid Mime Type Example
status:
429
representations
text/xml Quota Exceeded: This is an error that occurs when a requester has exceeded the quota limits associated with their API Key. Quota Exceeded Example
status:
500
representations
text/xml Generic Error: This is a general purpose error condition, typically due to back-end processing errors. Generic Error Example

https://api.elsevier.com/content/embase/article/medline/{id}

Embase Retrieval API (MEDLINE): This represents an article retrieval using a MEDLINE PubMed Identifier.

Methods
GET simple()

request
header params
Accept xsd:string
(required)
default: application/json
options: application/json, application/xml
This represents the acceptable mime types in which the response can be generated. This can also be submitted as the query string parameter "httpAccept". This returns the response in JSON, ATOM, or XML mark-up.
Authorization xsd:string This header field contains the OAuth bearer access token in which the format of the field is "Bearer <token>" (where the token represents the end-user session key). The presence of a bearer token implies the request will be executed against user-based entitlements. The Authorization field overrides X-ELS-Authtoken.
X-ELS-APIKey xsd:string
(required)
This represents a unique application developer key providing access to API resources. This key can also be submitted as the query string parameter "apiKey"
X-ELS-Authtoken xsd:string This represents a end-user session. If provided, this token is used to validate the credentials needed to access content in this resource. This token can also be submitted through the HTTP header "Authorization" or the query string parameter "access_token".
X-ELS-Insttoken xsd:string This represents a institution token. If provided, this key (in combination with its associated APIKey) is used to establish the credentials needed to access content in this resource. This token can also be provided through the query string parameter "insttoken".
X-ELS-ReqId xsd:string This is a client-defined request identifier, which will be logged in all trace messages of the service. This identifier can be used to track a specific transaction in the service's message logs. It will also be returned as an HTTP header in the corresponding response. Note that this should be a unique identifier for the client, and used to track a single transaction.

query params
httpaccept xsd:string
options: application/json, application/xml
Override for HTTP header Accept, this represents the acceptable mime types in which the response can be generated.
access_token xsd:string Override for HTTP header Authorization, this contains the OAuth bearer access token, where the format of the field is "<token>" (where the token represents the end-user session key). The presence of a bearer token implies the request will be executed against user-based entitlements.
insttoken xsd:string Override for HTTP header X-ELS-Insttoken, this represents a institution token. If provided, this key (in combination with its associated APIKey) is used to establish the credentials needed to access content in this resource.
apiKey xsd:string Override for HTTP header X-ELS-APIKey, this represents a unique application developer key providing access to resource.
reqId xsd:string Override for HTTP header X-ELS-ReqId, this is a client-defined request identifier, which will be logged in all trace messages of the service. This identifier can be used to track a specific transaction in the service's message logs. Note that this should be a unique identifier for the client, and used to track a single transaction.

responses
status:
200
representations
application/json Embase Article JSON Response: This is XML representing the requested document. JSON Example
status:
200
representations
application/xml Embase Article XML Response: This is XML representing the requested document. XML Example
status:
400
representations
text/xml Invalid Request: This is an error that occurs when invalid information is submitted. Invalid Request Example
status:
401
representations
text/xml Authentication Error: This is an error that occurs when a user cannot be authenticated due to missing/invalid credentials (authtoken or APIKey). Authentication Error Example
status:
403
representations
text/xml Authorization/Entitlements Error: This is an error that occurs when a user cannot be authenticated or entitlements cannot be validated. Authorization Error Example
status:
404
representations
text/xml Resource Not Found: This is an error that occurs when the request resource cannot be found. Resource Not Found Example
status:
405
representations
text/xml Invalid HTTP Method: This is an error that occurs when the requested HTTP Method is invalid. Invalid Method Example
status:
406
representations
text/xml Invalid Mime Type: This is an error that occurs when the requested mime type is invalid. Invalid Mime Type Example
status:
429
representations
text/xml Quota Exceeded: This is an error that occurs when a requester has exceeded the quota limits associated with their API Key. Quota Exceeded Example
status:
500
representations
text/xml Generic Error: This is a general purpose error condition, typically due to back-end processing errors. Generic Error Example