Mock sample for your project: OPTIMADE API

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.
CWA Rest Services provides multiple service endpoints, each with specific capabilities, to search and retrieve data on facilities regulated under the Clean Water Act (CWA) and managed under the National Pollutant Discharge Elimination System (NPDES) program. The returned results reflect data drawn from EPA's ICIS-NPDES 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

Wikipedia for Web APIs. Repository of API specs in OpenAPI 3.0 format.
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Client sample: [Demo] [Repo]

Biju Patnaik University Of Technology, Odisha (http://www.bput.ac.in/) is issuing Degree certificates through DigiLocker. These can be pulled by students into their DigiLocker accounts. Currently data for 2005-2019 is available.

Department of Sainik Welfare Society (www.sainikwelfare.puducherry.gov.in) is issuing digital "Dependency Certificate" . These certificates are being made available through DigiLocker. These Certificates can be pulled by citizens into their DigiLocker accounts.

REFUGE is a web application that seeks to provide safe restroom access for transgender, intersex, and gender nonconforming individuals.

Definition of ISBNdb.com API

AMBIT REST web services [eNanoMapper profile] with free text & faceted search

Returns doctors near a client given a lat/lon and autocomplete text.

Our atmosphere protects us from a hostile space radiation environment comprising high energy particles of solar and intergalactic origin. Solar radiation is significant during unpredictable and short lived solar flares and coronal mass ejections (CMEs); however, galactic cosmic radiation (GCR) is omnipresent. The GCR intensity varies with latitude, longitude, and time due to effects of solar activity on the interplanetary magnetic field, as well as the Earth's magnetic field. Space radiation collides with gases in the atmosphere, leading to a complex shower of high energy radiation, the intensity and composition of which varies spatially and temporally. Excessive exposure to radiation can damage DNA and lead to long-term health effects such as an increased risk of cancer. Resulting radiation levels at commercial aircraft altitudes are greater than at sea level due. Aircrew are classified as radiation workers in some countries; however, planning to limit their exposure, and monitoring, is generally lacking. Both real-time measurements and predictive models of radiation in the atmosphere are important to mitigate the radiation risk crew.
We host a RESTful API to models of cosmic ray induced ionising radiation in the atmosphere. The PARMA or CARI7 endpoints can be used to calculate Effective Dose or Ambient Dose Equivalent at a point.
The Route Dose API calculates the same quantities along a great circle route between two airports using CARI7.
API requests must contain a key "API-Key" in the header (see code samples). Obtain a key from here.
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Amentum Pty Ltd is not responsible nor liable for any loss or damage of any sort incurred as a result of using the API.
Copyright Amentum Pty Ltd 2021.

All about Numbers. REST access with json/xml/jsonp result support. Below is the documentation for the Numbers API. You can try them out right here. Find more information and subscribe at math.tools

Marksheets and Degree Certificates of academic year 2017-18 issued by AKTU can be pulled by students into their DigiLocker accounts

Jaypee University Of Information Technology, Waknaghat (H. P.) (http://www.juit.ac.in/) is issuing Degree certificates through DigiLocker. These can be pulled by students into their DigiLocker accounts. Currently, data for the year 2019 is made available by Jaypee University Of Information Technology.