Mock sample for your project: COVID-19 data 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.
ECHO Rest Services provide multiple service endpoints, each with specific capabilities, to search and retrieve data on facilities regulated as Clean Air Act (CAA) stationary sources, Clean Water Act (CWA) dischargers, Resource Conservation and Recovery Act (RCRA) hazardous waste generators/handlers, and Safe Drinking Water Act (SDWA) public water systems. Data of interest from other EPA sources, such as the Toxics Release Inventory, is also supplied for context.
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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

An API exposing details of the various types of Statutory Instruments laid before Parliament.

A free & open API for FIGI discovery.

OPA provides policy-based control for cloud native environments. The following endpoints (such as PUT /v1/policies) provide reference documentation for the OPA REST API.
API specification viewing options
View the specification in Redoc (default)
View the specification in Swagger UI

The Geographic API extends the Semantic API, using a linked data approach to enhance location concepts used in The New York Times' controlled vocabulary and data resources which combine them with the GeoNames database, an authoritative and free to use database of global geographical places, names and features.

API to get and search for information regarding Bills, their stages, associated amendments and publications.

This is technical documentation for the Auckland Museum API

The Top Stories API provides lists of articles and associated images by section.

An API collection for Covid 19 by Crediwatch

The Unified Taxonomic Information Service (UTIS) is the taxonomic backbone for the EU-BON project

This data set contains the list of polling places. It can be organized by ward/division, accessibility rating, or type of building.
This list is used to assign poll workers, send the machines and necessary accessibility materials, etc.
Endpoint: http://api.phila.gov/polling-places/v1