Feature

JSON Responses

JSON as the primary request and response format.

12 providers 48 APIs 9 declared variants

Requests and responses are JSON, the format every HTTP client and language runtime handles natively. Baseline expectation for modern integrations.

12 API providers on the APIs.io network offer json responses. The highest-rated are Abstract API, Ally Invest, WeatherAPI, Adobe Launch, Apache CouchDB.

Providers

Ranked by API Evangelist rating — Exemplar and Strong are expanded by default.

Strong 5 Solid coverage with minor gaps
Abstract API Abstract API is a platform that offers a wide range of API services for developers to easily integrate vari... 14 APIs 65.9 Ally Invest Ally Invest is an online brokerage platform offering commission-free self-directed trading of US stocks, ET... 6 APIs 61.6 WeatherAPI WeatherAPI.com provides real-time, forecast, historical, marine, future, astronomy, air quality, pollen, sp... 1 API 61.6 Adobe Launch Adobe Launch, now known as Adobe Experience Platform Tags, is a next-generation tag management system that ... 4 APIs 60.1 Apache CouchDB Apache CouchDB is an open-source distributed document-oriented NoSQL database governed by the Apache Softwa... 1 API 60.1
Developing 4 Usable, with meaningful gaps to close
Australia Post Australia Post is Australia's primary postal operator, offering a developer platform with REST APIs for e-c... 5 APIs 54.9 U.S. Geological Survey The U.S. Geological Survey (USGS) is a scientific agency of the U.S. government that conducts research and ... 7 APIs 52.1 Weather.gov Weather.gov is the official website of the National Weather Service (NWS), operated by NOAA within the US D... 1 API 49.5 agco AGCO is a global leader in the design, manufacture, and distribution of agricultural machinery and precisio... 1 API 47.8
Thin 2 Limited public surface area
Numbers API Numbers API by David Hu and Mack Duan — a free, community-contributed HTTP API for interesting facts about ... 1 API 33.1 IEEE Xplore IEEE Xplore is the authoritative technical library operated by the Institute of Electrical and Electronics ... 4 APIs 32.3
Emerging 1 Early or largely undocumented
Varnish Cache Varnish Cache is a high-performance HTTP accelerator and reverse proxy designed for content-heavy dynamic w... 3 APIs 25.7

What Providers Actually Declared

This feature is a canonical term. These are the free-text strings providers wrote in their own apis.yml that map onto it.

GeoJSON OutputGeoJSON ResponsesJSON API ProfilesJSON API specification-based programmatic managementJSON OutputJSON ResponsesJSON and XML ResponsesRESTful APIs using JSON payloads; GET, POST, PUT, PATCH, and DELETE methods supportedRESTful HTTP/JSON API

Scroll for all 9