Feature

Filtering & Querying

Server-side filters, sorting, and field selection.

47 providers 706 APIs 43 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.

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

Providers

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

Exemplar 6 Complete, well-documented, and agent-ready
IPinfo IPinfo is an IP address data and intelligence platform that provides geolocation (country, region, city, co... 17 APIs 75.3 Buildkite Buildkite is a hybrid CI/CD platform that combines a hosted control plane (pipelines.buildkite.com) with se... 23 APIs 71.8 Commerce Layer Commerce Layer is the headless, multi-market commerce API used by global brands to sell everywhere — web, m... 148 APIs 69.5 Amazon EventBridge Pipes Amazon EventBridge Pipes helps you create point-to-point integrations between event producers and consumers... 2 APIs 68.6 Adafruit IO Adafruit IO is a cloud Internet of Things platform from Adafruit Industries built for makers, hobbyists, st... 12 APIs 67.6 Amazon X-Ray AWS X-Ray is a distributed tracing service that helps developers analyze and debug production applications,... 32 APIs 66.6
Strong 13 Solid coverage with minor gaps
AWS Redshift Amazon Redshift is a fast, fully managed, petabyte-scale data warehouse service that makes it simple and co... 130 APIs 63.5 Amazon Redshift Amazon Redshift is a fast, fully managed cloud data warehouse that makes it simple and cost-effective to an... 5 APIs 62.2 Barndoor Barndoor AI is the control plane for agentic AI, providing secure access and governance for AI agents and M... 13 APIs 62.1 Adapt Adapt (adapt.io) is a B2B lead intelligence and sales acceleration platform that provides a database of 250... 4 APIs 61.9 Sportmonks Sportmonks is a Dutch sports data provider (Deventer, Netherlands) delivering developer-friendly REST APIs ... 13 APIs 61.9 Calendarific Worldwide public holidays REST API covering 230+ countries. Calendarific provides national, local, religiou... 3 APIs 61.4 StackOne StackOne is an AI-powered embedded integration platform as a service (iPaaS) designed to simplify and accel... 33 APIs 60.4 Chroma Chroma (Chroma DB) is an open-source AI-native embedding database designed to make it easy to build LLM app... 8 APIs 60.3 Mediastack Mediastack is a free and paid REST API by apilayer for live, historical, and blog news articles aggregated ... 2 APIs 59.0 Apache Nutch Apache Nutch is a highly extensible and scalable open-source web crawler software project built on Apache H... 7 APIs 58.9 Amazon SNS Amazon Simple Notification Service (SNS) is a fully managed messaging service for both application-to-appli... 8 APIs 57.7 Typesense Typesense is a fast, typo-tolerant, open-source search engine designed for developer productivity. It provi... 25 APIs 56.7 Amazon CloudSearch Amazon CloudSearch is a managed search service that makes it easy to set up, manage, and scale a search sol... 2 APIs 56.0
Developing 15 Usable, with meaningful gaps to close
arXiv arXiv is the open-access e-print repository operated by Cornell Tech, hosting more than two million preprin... 4 APIs 52.9 Phonely Phonely is an AI voice agent platform that answers business phone calls in real time with large-language-mo... 2 APIs 52.6 Trino Trino is an open-source, distributed SQL query engine built for lightning-fast analytics over large, hetero... 2 APIs 51.5 Meilisearch Meilisearch is an open source, lightning-fast search engine API that brings AI-powered hybrid search to sit... 8 APIs 50.9 Gutendex Gutendex is a simple, self-hosted JSON-based web API for serving book catalog information from Project Gute... 1 API 50.8 Ariba Guided Buying SAP Ariba Guided Buying provides a consumer-like shopping experience for enterprise procurement, enabling e... 2 APIs 49.6 Knit Knit is a unified API platform for B2B products, AI agents, and MCP clients, providing integrations infrast... 7 APIs 49.5 Close Close is an inside-sales CRM with calling, email, SMS, and WhatsApp built in. The Close API exposes leads, ... 62 APIs 49.3 Blockdaemon Blockdaemon is an institutional blockchain infrastructure company founded in 2017 by Konstantin Richter. It... 11 APIs 48.9 Humaans Humaans is a London-headquartered modern HRIS (Human Resources Information System) for fast-growing, distri... 15 APIs 46.5 Punk API Punk API is a free, no-auth REST API exposing BrewDog's "DIY Dog" open-source beer recipe collection — 325 ... 1 API 46.2 Apache Solr Apache Solr is an open-source enterprise search platform built on Apache Lucene. It provides distributed in... 10 APIs 45.9 IEEE Xplore IEEE Xplore is the authoritative technical library operated by the Institute of Electrical and Electronics ... 5 APIs 45.6 Nominatim Nominatim is an open-source (BSD-2-Clause) search engine for OpenStreetMap data, supporting forward geocodi... 7 APIs 43.4 bugsnag Bugsnag is an application stability monitoring platform that helps software teams detect, diagnose, and fix... 16 APIs 43.1
Thin 8 Limited public surface area
Apache RocketMQ Apache RocketMQ is a distributed messaging and streaming platform with low latency, high performance, and r... 4 APIs 41.0 Lex Machina Lex Machina is a legal analytics platform owned by LexisNexis that transforms raw court documents and docke... 21 APIs 40.8 Youki youki is an open source container runtime written in Rust that implements the OCI runtime specification as ... 2 APIs 40.0 Bored API The Bored API is a free, open-source, no-authentication public API that serves suggestions for things to do... 5 APIs 39.7 JSONPlaceholder JSONPlaceholder is a free, no-auth fake REST API for prototyping, tutorials, and testing. It exposes six re... 6 APIs 39.6 U.S. Treasury Fiscal Data The U.S. Treasury Bureau of the Fiscal Service manages the government's finances including collecting reven... 4 APIs 37.4 Revel Systems Revel Systems is a cloud iPad-based POS for restaurants and retailers. The Revel Open API exposes products,... 6 APIs 35.2 Microsoft Entity Framework Microsoft Entity Framework is an object-relational mapping (ORM) framework for .NET developers enabling dat... 2 APIs 29.3
Emerging 5 Early or largely undocumented
Amazon Application Discovery Service Amazon Application Discovery Service helps enterprise customers plan application migration projects by auto... 6 APIs 27.2 Bloomberg Query Language (BQL) Bloomberg Query Language (BQL) is a proprietary query language for accessing, filtering, aggregating, and c... 2 APIs 26.5 Apache Mahout Apache Mahout is an open-source framework for building scalable machine learning applications. The project ... 2 APIs 22.9 Descartes Labs Descartes Labs was a Santa Fe, New Mexico geospatial intelligence company founded in 2014 as a spin-out fro... 6 APIs 14.4 AlternativeTo AlternativeTo is a crowdsourced software discovery platform that helps users find alternatives to software ... 13.2

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 filteringPlatform 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 callsTag-based filtering and organization of discovered assetsTagging 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 Filtering

Showing 40 of 43 declared variants