Mock sample for your project: Co-WIN Certificate API

Transfer Certificate issued by Andaman Law College can be downloaded in citizen's DigiLocker account.

API v3 targets v2 functionality with a few minor additions. The API is accessible via https://api.thetvdb.com and provides the following REST endpoints in JSON format.
How to use this API documentation
You may browse the API routes without authentication, but if you wish to send requests to the API and see response data, then you must authenticate.
Obtain a JWT token by POSTing to the /login route in the Authentication section with your API key and credentials.
Paste the JWT token from the response into the "JWT Token" field at the top of the page and click the 'Add Token' button.
You will now be able to use the remaining routes to send requests to the API and get a response.
Language Selection
Language selection is done via the Accept-Language header. At the moment, you may only pass one language abbreviation in the header at a time. Valid language abbreviations can be found at the /languages route..
Authentication
Authentication to use the API is similar to the How-to section above. Users must POST to the /login route with their API key and credentials in the following format in order to obtain a JWT token.
{"apikey":"APIKEY","username":"USERNAME","userkey":"USERKEY"}
Note that the username and key are ONLY required for the /user routes. The user's key is labled Account Identifier in the account section of the main site.
The token is then used in all subsequent requests by providing it in the Authorization header. The header will look like: Authorization: Bearer . Currently, the token expires after 24 hours. You can GET the /refresh_token route to extend that expiration date.
Versioning
You may request a different version of the API by including an Accept header in your request with the following format: Accept:application/vnd.thetvdb.v$VERSION. This documentation automatically uses the version seen at the top and bottom of the page.

Enforcement and Compliance History Online (ECHO) is a tool developed and maintained by EPA's Office of Enforcement and Compliance Assurance for public use. ECHO provides integrated compliance and enforcement information for over 1 million regulated facilities nationwide.
RCRA Rest Services provides multiple service endpoints, each with specific capabilities, to search and retrieve data on hazardous waste handlers/facilities regulated under the Resource Conservation and Recovery Act (RCRA). The returned results reflect data drawn from EPA's RCRAInfo database.
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The getfacilities, getmap, getqid, and getdownload end points are meant to be used together, while the enhanced getfacilityinfo end point is self contained.
The getfacilityinfo end point returns either an array of state, county or zip clusters with summary statistics per cluster or an array of facilities.
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The recommended use scenario for getfacilities, getqid, getmap, and getdownoad is:
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1) Use getfacilities to validate passed query parameters, obtain summary statistics and to obtain a queryid (QID). QIDs are time sensitive and will be valid for approximately 30 minutes.
2) Use get_qid, with the returned QID, to paginate through arrays of facility results.
3) Use get_map, with the returned QID, to zoom in/out and pan on the clustered and individual facility coordinates that meet the QID query criteria.
4) Use get_download, with the returned QID, to generate a Comma Separated Value (CSV) file of facility information that meets the QID query criteria.
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Use the qcolumns parameter to customize your search results. Use the Metadata service endpoint for a list of available output objects, their Column Ids, and their definitions to help you build your customized output.
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Additional ECHO Resources: Web Services, About ECHO's Data, Data Downloads

This is an API for accessing all sorts of college football data. Please note that API keys should be supplied with "Bearer " prepended (e.g. "Bearer your_key"). API keys can be acquired from the CollegeFootballData.com website.

Enforcement and Compliance History Online (ECHO) is a tool developed and maintained by EPA's Office of Enforcement and Compliance Assurance for public use. ECHO provides integrated compliance and enforcement information for over 1 million regulated facilities nationwide.
CASE Rest Services provide multiple service endpoints, each with specific capabilities, to search and retrieve data on civil cases entered into the
Integrated Compliance Information System (ICIS) and criminal cases entered into the Summary of Criminal Prosecutions database.
See Enforcement Case Search Help (https://echo.epa.gov/help/enforcement-case-search-help) for additional information on searching civil and criminal cases.
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The getcases, getmap, getqid, and getdownload end points are meant to be used together, while the enhanced getcaseinfo end point is self contained..
The recommended use scenario for getcases, getqid, getmap, and getdownoad is:
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1) Use getcases to validate passed query parameters, obtain summary statistics and to obtain a queryid (QID). QIDs are time sensitive and will be valid for approximately 30 minutes.
2) Use get_qid, with the returned QID, to paginate through arrays of case results.
3) Use get_map, with the returned QID, to zoom in/out and pan on the clustered and individual facility coordinates, related to the returned cases, that meet the QID query criteria.
4) Use get_download, with the returned QID, to generate a Comma Separated Value (CSV) file of facility information that meets the QID query criteria.
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In addition to the service endpoints listed above there are two detailed case report services, one for civil cases (getcasereport) and one for criminal cases (getcrcasereport).
See the Civil Enforcement Case Report Help (https://echo.epa.gov/help/reports/enforcement-case-report-help) and the Criminal Case Report Help (https://echo.epa.gov/help/reports/criminal-case-report-help) for additional information
on then data returned from these two services.
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Additional ECHO Resources: Web Services, About ECHO's Data, Data Downloads

Figshare apiv2. Using Swagger 2.0

APIs provided by UCO Bank.

A real-time RESTish web API for worldwide carbon dioxide levels.

Driving License (DL) and Vehicle Registration Certificate (RC) of the State, as available on Parivahan Sewa (http://parivahan.co.in/) of Ministry of Road Transport and Highways, are available on DigiLocker. Citizens can pull these documents into their DigiLocker accounts.

This API that lists all 28 public holidays for all 13 provinces and territories in Canada, including federal holidays.

Free API documentation to get Real time corona virus stats

This is an API for accessing information about bicycling related incidents. You can find the source code on GitHub.