Feature

Filtering & Querying

Server-side filters, sorting, and field selection.

45 providers 149 APIs 41 declared variants

Queries can be narrowed with filters, sort orders, date ranges, and sparse fieldsets. Cuts payload size and the amount of client-side post-processing an integrator has to write.

45 API providers on the APIs.io network offer filtering & querying. The highest-rated are Commerce Layer, IPinfo, Buildkite, Amazon EventBridge Pipes, Adafruit IO.

Providers

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

Exemplar 1 Complete, well-documented, and agent-ready
Commerce Layer Commerce Layer is the headless, multi-market commerce API used by global brands to sell everywhere — web, m... 3 APIs 70.3
Strong 10 Solid coverage with minor gaps
IPinfo IPinfo is an IP address data and intelligence platform that provides geolocation (country, region, city, co... 1 API 67.9 Buildkite Buildkite is a hybrid CI/CD platform that combines a hosted control plane (pipelines.buildkite.com) with se... 5 APIs 67.8 Amazon EventBridge Pipes Amazon EventBridge Pipes helps you create point-to-point integrations between event producers and consumers... 1 API 66.3 Adafruit IO Adafruit IO is a cloud Internet of Things platform from Adafruit Industries built for makers, hobbyists, st... 3 APIs 64.7 AWS Redshift Amazon Redshift is a fast, fully managed, petabyte-scale data warehouse service that makes it simple and co... 3 APIs 63.2 Sportmonks Sportmonks is a Dutch sports data provider (Deventer, Netherlands) delivering developer-friendly REST APIs ... 4 APIs 63.2 Amazon X-Ray AWS X-Ray is a distributed tracing service that helps developers analyze and debug production applications,... 1 API 62.5 Amazon Redshift Amazon Redshift is a fast, fully managed cloud data warehouse that makes it simple and cost-effective to an... 3 APIs 62.0 Apache Nutch Apache Nutch is a highly extensible and scalable open-source web crawler software project built on Apache H... 1 API 62.0 Ariba Guided Buying SAP Ariba Guided Buying provides a consumer-like shopping experience for enterprise procurement, enabling e... 2 APIs 60.8
Developing 20 Usable, with meaningful gaps to close
Barndoor Barndoor AI is the control plane for agentic AI, providing secure access and governance for AI agents and M... 8 APIs 59.8 StackOne StackOne is an AI-powered embedded integration platform as a service (iPaaS) designed to simplify and accel... 12 APIs 59.4 Chroma Chroma (Chroma DB) is an open-source AI-native embedding database designed to make it easy to build LLM app... 4 APIs 59.3 Calendarific Worldwide public holidays REST API covering 230+ countries. Calendarific provides national, local, religiou... 1 API 58.5 Adapt Adapt (adapt.io) is a B2B lead intelligence and sales acceleration platform that provides a database of 250... 1 API 58.4 Typesense Typesense is a fast, typo-tolerant, open-source search engine designed for developer productivity. It provi... 5 APIs 57.3 Mediastack Mediastack is a free and paid REST API by apilayer for live, historical, and blog news articles aggregated ... 1 API 56.8 Amazon CloudSearch Amazon CloudSearch is a managed search service that makes it easy to set up, manage, and scale a search sol... 1 API 55.4 Phonely Phonely is an AI voice agent platform that answers business phone calls in real time with large-language-mo... 2 APIs 55.0 Trino Trino is an open-source, distributed SQL query engine built for lightning-fast analytics over large, hetero... 1 API 54.6 Blockdaemon Blockdaemon is an institutional blockchain infrastructure company founded in 2017 by Konstantin Richter. It... 11 APIs 53.9 Amazon SNS Amazon Simple Notification Service (SNS) is a fully managed messaging service for both application-to-appli... 1 API 52.7 U.S. Treasury Fiscal Data The U.S. Treasury Bureau of the Fiscal Service manages the government's finances including collecting reven... 1 API 52.0 arXiv arXiv is the open-access e-print repository operated by Cornell Tech, hosting more than two million preprin... 4 APIs 50.8 Close Close is an inside-sales CRM with calling, email, SMS, and WhatsApp built in. The Close API exposes leads, ... 28 APIs 49.3 Gutendex Gutendex is a simple, self-hosted JSON-based web API for serving book catalog information from Project Gute... 1 API 49.1 Knit Knit is a unified API platform for B2B products, AI agents, and MCP clients, providing integrations infrast... 1 API 48.5 Apache RocketMQ Apache RocketMQ is a distributed messaging and streaming platform with low latency, high performance, and r... 1 API 47.4 Youki youki is an open source container runtime written in Rust that implements the OCI runtime specification as ... 2 APIs 45.7 Meilisearch Meilisearch is an open source, lightning-fast search engine API that brings AI-powered hybrid search to sit... 1 API 45.2
Thin 11 Limited public surface area
Revel Systems Revel Systems is a cloud iPad-based POS for restaurants and retailers. The Revel Open API exposes products,... 2 APIs 44.3 Punk API Punk API is a free, no-auth REST API exposing BrewDog's "DIY Dog" open-source beer recipe collection — 325 ... 1 API 43.7 Humaans Humaans is a London-headquartered modern HRIS (Human Resources Information System) for fast-growing, distri... 1 API 43.6 JSONPlaceholder JSONPlaceholder is a free, no-auth fake REST API for prototyping, tutorials, and testing. It exposes six re... 1 API 41.6 Nominatim Nominatim is an open-source (BSD-2-Clause) search engine for OpenStreetMap data, supporting forward geocodi... 1 API 41.3 bugsnag Bugsnag is an application stability monitoring platform that helps software teams detect, diagnose, and fix... 5 APIs 40.0 Bored API The Bored API is a free, open-source, no-authentication public API that serves suggestions for things to do... 2 APIs 37.9 Apache Solr Apache Solr is an open-source enterprise search platform built on Apache Lucene. It provides distributed in... 5 APIs 33.4 Lex Machina Lex Machina is a legal analytics platform owned by LexisNexis that transforms raw court documents and docke... 1 API 32.8 IEEE Xplore IEEE Xplore is the authoritative technical library operated by the Institute of Electrical and Electronics ... 4 APIs 32.3 Microsoft Entity Framework Microsoft Entity Framework is an object-relational mapping (ORM) framework for .NET developers enabling dat... 2 APIs 32.3
Emerging 3 Early or largely undocumented
Bloomberg Query Language (BQL) Bloomberg Query Language (BQL) is a proprietary query language for accessing, filtering, aggregating, and c... 2 APIs 28.5 Apache Mahout Apache Mahout is an open-source framework for building scalable machine learning applications. The project ... 2 APIs 25.0 Descartes Labs Descartes Labs was a Santa Fe, New Mexico geospatial intelligence company founded in 2014 as a spin-out fro... 6 APIs 17.7

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.

Account activities log with type filteringBatch retry API for failed jobs with optional state filteringCase Query API with filtering by participants, dates, events, resolutions, findings, remedies, and damagesCategory FilteringCollaborative FilteringConfigurable URL FilteringContent FilteringContext FilteringCountry And Layer FilteringDate-Range FilteringDynamic filteringEvent FilteringFaceted SearchFaceted search and filteringFederated QueryField FilteringField-Lookup FilteringFilters, Includes, Field SelectionFlexible Field SelectionGeosearch and faceted searchGlobal Query FiltersHoliday Type FilteringIncremental sync with updated_after filteringMessage FilteringMetadata FilteringMulti-dimensional filteringQuery FilteringRecipe-Oriented Query FiltersRich FilteringRich filtering operators ($in, $nin, $gt, $gte, $lt, $lte, $or) on most collectionsSeccomp FilteringSecurity Universe FilteringSensitive data filteringSpam filtering on inbound callsTagging across resources; sparse fieldsets; filtering, sorting, pagination, and include parameters per JSON:APITechnographic filtering (technology stack) and exact-title matchingToken Pricing & Metadata API (Beta) with tag-based filteringTool FilteringTrace Filtering and GroupsVector service for tabular and geospatial feature tables with property filtering, `ilike` wildcards, and ipyleaflet visualisation

Showing 40 of 41 declared variants