Free • Updated automatically from official OpenAPI specs

API Changelog Directory

Auto-generated changelogs for popular APIs, rebuilt every day from each vendor's official OpenAPI specification. See what changed, which changes are breaking — and get an email before a silent change breaks your integration.

Top APIs

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50 tracked

1Forge Finance APIs

1forge.com

Financial

Stock and Forex Data and Realtime Quotes

Last change today
0 changes tracked

1Password Connect

1password.local

Security

REST API interface for 1Password Connect.

Last change today
0 changes tracked

AGCO API

agco-ats.com

Ecommerce

Last change today
0 changes tracked

AIception Interactive

aiception.com

Machine Learning

Here you can play & test & prototype all the endpoints using just your browser! Go ahead!

Last change today
0 changes tracked

Account API

adyen.com

Payment

This API is used for the classic integration. If you are just starting your implementation, refer to our [new integration guide](https://docs.adyen.com/marketplaces-and-platforms) instead. The Account API provides endpoints for managing account-related entities on your platform.

Last change today
0 changes tracked

Adafruit IO REST API

adafruit.com

IoT

### The Internet of Things for Everyone The Adafruit IO HTTP API provides access to your Adafruit IO data from any programming language or hardware environment that can speak HTTP. The easiest way to get started is with [an Adafruit IO learn guide](https://learn.adafruit.com/seri

Last change today
0 changes tracked

Adobe Experience Manager (AEM) API

adobe.com

Marketing

Swagger AEM is an OpenAPI specification for Adobe Experience Manager (AEM) API

Last change today
0 changes tracked

Adyen Balance Control API

adyen.com

Payment

The Balance Control API lets you transfer funds between merchant accounts that belong to the same legal entity and are under the same company account. ## Authentication To connect to the Balance Control API, you must authenticate your requests with an [API key or basic auth usern

Last change today
0 changes tracked

Adyen BinLookup API

adyen.com

Payment

The BIN Lookup API provides endpoints for retrieving information, such as cost estimates, and 3D Secure supported version based on a given BIN. ## Authentication You need an [API credential](https://docs.adyen.com/development-resources/api-credentials) to authenticate to the API.

Last change today
0 changes tracked

Adyen Checkout API

adyen.com

Payment

Adyen Checkout API provides a simple and flexible way to initiate and authorise online payments. You can use the same integration for payments made with cards (including 3D Secure), mobile wallets, and local payment methods (for example, iDEAL and Sofort). This API reference prov

Last change today
0 changes tracked

Adyen Checkout Utility Service

adyen.com

Payment

A web service containing utility functions available for merchants integrating with Checkout APIs. ## Authentication Each request to the Checkout Utility API must be signed with an API key. For this, obtain an API Key from your Customer Area, as described in [How to get the Check

Last change today
0 changes tracked

Adyen Data Protection API

adyen.com

Payment

Adyen Data Protection API provides a way for you to process [Subject Erasure Requests](https://gdpr-info.eu/art-17-gdpr/) as mandated in GDPR. Use our API to submit a request to delete shopper's data, including payment details and other related information (for example, delivery

Last change today
0 changes tracked

Adyen Payment API

adyen.com

Payment

A set of API endpoints that allow you to initiate, settle, and modify payments on the Adyen payments platform. You can use the API to accept card payments (including One-Click and 3D Secure), bank transfers, ewallets, and many other payment methods. To learn more about the API, v

Last change today
0 changes tracked

Adyen Payout API

adyen.com

Payment

A set of API endpoints that allow you to store payout details, confirm, or decline a payout. For more information, refer to [Online payouts](https://docs.adyen.com/online-payments/online-payouts). ## Authentication To use the Payout API, you need to have [two API credentials](htt

Last change today
0 changes tracked

Adyen Recurring API

adyen.com

Payment

The Recurring APIs allow you to manage and remove your tokens or saved payment details. Tokens should be created with validation during a payment request. For more information, refer to our [Tokenization documentation](https://docs.adyen.com/online-payments/tokenization). ## Auth

Last change today
0 changes tracked

Adyen Stored Value API

adyen.com

Payment

A set of API endpoints to manage stored value products.

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0 changes tracked

Adyen Test Cards API

adyen.com

Payment

The Test Cards API provides endpoints for generating custom test card numbers. For more information, refer to [Custom test cards](https://docs.adyen.com/development-resources/testing/create-test-cards) documentation.

Last change today
0 changes tracked

Afterbanks API

afterbanks.com

Financial

La estandarización de la conexión con cualquier banco en tiempo real.

Last change today
0 changes tracked

Airbyte Configuration API

airbyte.local

Developer Tools

Airbyte Configuration API [https://airbyte.io](https://airbyte.io). This API is a collection of HTTP RPC-style methods. While it is not a REST API, those familiar with REST should find the conventions of this API recognizable. Here are some conventions that this API follows: * Al

Last change today
0 changes tracked

Airline Code Lookup API

amadeus.com

Other

Before using this API, we recommend you read our **[Authorization Guide](https://developers.amadeus.com/self-service/apis-docs/guides/authorization-262)** for more information on how to generate an access token. Please also be aware that our test environment is based on a subset

Last change today
0 changes tracked

Airport & City Search

amadeus.com

Other

Before using this API, we recommend you read our **[Authorization Guide](https://developers.amadeus.com/self-service/apis-docs/guides/authorization-262)** for more information on how to generate an access token. Please also be aware that our test environment is based on a subset

Last change today
0 changes tracked

Airport Nearest Relevant

amadeus.com

Other

Before using this API, we recommend you read our **[Authorization Guide](https://developers.amadeus.com/self-service/apis-docs/guides/authorization-262)** for more information on how to generate an access token. Please also be aware that our test environment is based on a subset

Last change today
0 changes tracked

Airport On-Time Performance

amadeus.com

Other

Before using this API, we recommend you read our **[Authorization Guide](https://developers.amadeus.com/self-service/apis-docs/guides/authorization-262)** for more information on how to generate an access token.

Last change today
0 changes tracked

Akeneo PIM REST API

akeneo.com

Enterprise

Last change today
0 changes tracked

Alerter System API

alertersystem.com

Other

<p>This is the <a href="/">Alerter System</a> API playground. More documentation is available at the <a href="/help/developers/">API Help Center</a>.</p><p>The "Available Authorizations" in the Authorize popup only applies to this playground web interface. Other <a href="/help/de

Last change today
0 changes tracked

Authentiq API

6-dot-authentiqio.appspot.com

Security

Strong authentication, without the passwords.

Last change today
0 changes tracked

Branded Fares Upsell

amadeus.com

Other

Before using this API, we recommend you read our **[Authorization Guide](https://developers.amadeus.com/self-service/apis-docs/guides/authorization-262)** for more information on how to generate an access token. Please also be aware that our test environment is based on a subset

Last change today
0 changes tracked

Classic Platforms - Notifications

adyen.com

Payment

This API is used for the classic integration. If you are just starting your implementation, refer to our [new integration guide](https://docs.adyen.com/marketplaces-and-platforms) instead. The Notification API sends notifications to the endpoints specified in a given subscription

Last change today
0 changes tracked

Configuration API

adyen.com

Payment

The Configuration API enables you to create a platform where you can onboard your users as account holders and create balance accounts, cards, and business accounts. ## Authentication Your Adyen contact will provide your API credential and an API key. To connect to the API, add a

Last change today
0 changes tracked

Configuration webhooks

adyen.com

Payment

Adyen sends notifications through webhooks to inform your system about events that occur in your platform. These events include, for example, when an account holder's capabilities are updated, or when a sweep configuration is created or updated. When an event occurs, Adyen makes

Last change today
0 changes tracked

Control API v1

ably.net

Cloud

Use the Control API to manage your applications, namespaces, keys, queues, rules, and more. Detailed information on using this API can be found in the Ably <a href="https://ably.com/documentation/control-api">developer documentation</a>. Control API is currently in Beta.

Last change today
0 changes tracked

Events API

1password.com

Security

1Password Events API Specification.

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0 changes tracked

Flight Availibilities Search

amadeus.com

Other

Before using this API, we recommend you read our **[Authorization Guide](https://developers.amadeus.com/self-service/apis-docs/guides/authorization-262)** for more information on how to generate an access token. Please also be aware that our test environment is based on a subset

Last change today
0 changes tracked

Flight Busiest Traveling Period

amadeus.com

Other

Before using this API, we recommend you read our **[Authorization Guide](https://developers.amadeus.com/self-service/apis-docs/guides/authorization-262)** for more information on how to generate an access token. Please also be aware that our test environment is based on a subset

Last change today
0 changes tracked

Flight Cheapest Date Search

amadeus.com

Other

Before using this API, we recommend you read our **[Authorization Guide](https://developers.amadeus.com/self-service/apis-docs/guides/authorization-262)** for more information on how to generate an access token. Please also be aware that our test environment is based on a subset

Last change today
0 changes tracked

Flight Offers Search

amadeus.com

Location

Before using this API, we recommend you read our **[Authorization Guide](https://developers.amadeus.com/self-service/apis-docs/guides/authorization)** for more information on how to generate an access token. Please also be aware that our test environment is based on a subset of t

Last change today
0 changes tracked

Fund API

adyen.com

Payment

This API is used for the classic integration. If you are just starting your implementation, refer to our [new integration guide](https://docs.adyen.com/marketplaces-and-platforms) instead. The Fund API provides endpoints for managing the funds in the accounts on your platform. Th

Last change today
0 changes tracked

Hosted onboarding API

adyen.com

Payment

This API is used for the classic integration. If you are just starting your implementation, refer to our [new integration guide](https://docs.adyen.com/marketplaces-and-platforms) instead. The Hosted onboarding API provides endpoints that you can use to generate links to Adyen-ho

Last change today
0 changes tracked

IP geolocation API

abstractapi.com

Location

Abstract IP geolocation API allows developers to retrieve the region, country and city behind any IP worldwide. The API covers the geolocation of IPv4 and IPv6 addresses in 180+ countries worldwide. Extra information can be retrieved like the currency, flag or language associated

Last change today
0 changes tracked

Legal Entity Management API

adyen.com

Payment

The Legal Entity Management API enables you to manage legal entities that contain information required for verification. ## Authentication To connect to the Legal Entity Management API, you must use the basic authentication credentials of your web service user. If you don't have

Last change today
0 changes tracked

Management API

adyen.com

Payment

Configure and manage your Adyen company and merchant accounts, stores, and payment terminals. ## Authentication Each request to the Management API must be signed with an API key. [Generate your API key](https://docs.adyen.com/development-resources/api-credentials#generate-api-key

Last change today
0 changes tracked

Management Webhooks

adyen.com

Payment

Adyen uses webhooks to inform your system about events that happen with your Adyen company and merchant accounts, stores, payment terminals, and payment methods when using [Management API](https://docs.adyen.com/api-explorer/#/ManagementService/latest/overview). When an event occ

Last change today
0 changes tracked

Notification Configuration API

adyen.com

Payment

This API is used for the classic integration. If you are just starting your implementation, refer to our [new integration guide](https://docs.adyen.com/marketplaces-and-platforms) instead. The Notification Configuration API provides endpoints for setting up and testing notificati

Last change today
0 changes tracked

POS Terminal Management API

adyen.com

Payment

This API provides endpoints for managing your point-of-sale (POS) payment terminals. You can use the API to obtain information about a specific terminal, retrieve overviews of your terminals and stores, and assign terminals to a merchant account or store. For more information, re

Last change today
0 changes tracked

Payment webhooks (deprecated)

adyen.com

Payment

The payment webhooks are deprecated. Use the [accounting webhooks](https://docs.adyen.com/api-explorer/transfer-webhooks/latest/overview) instead. Adyen sends notifications through webhooks to inform your system about the creation of payment resources and money movements in your

Last change today
0 changes tracked

Platform API

ably.io

Cloud

The [REST API specification](https://www.ably.io/documentation/rest-api) for Ably.

Last change today
0 changes tracked

Report webhooks

adyen.com

Payment

Adyen sends notifications through webhooks to inform your system that reports were generated and are ready to be downloaded. You can download reports programmatically by making an HTTP GET request, or manually from your [Balance Platform Customer Area](https://balanceplatform-tes

Last change today
0 changes tracked

Transfer webhooks

adyen.com

Payment

Adyen sends notifications through webhooks to inform your system about incoming and outgoing transfers in your platform. You can use these webhooks to build your implementation. For example, you can use this information to update balances in your own dashboards or to keep track o

Last change today
0 changes tracked

Transfers API

adyen.com

Payment

The Transfers API provides endpoints that you can use to get information about all your transactions, move funds within your balance platform or send funds from your balance platform to a [transfer instrument](https://docs.adyen.com/api-explorer/#/legalentity/latest/post/transfer

Last change today
0 changes tracked

airportsapi

airport-web.appspot.com

Transport

Get name and website-URL for airports by ICAO code. Covered airports are mostly in Germany.

Last change today
0 changes tracked
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Frequently asked questions

Where do these changelogs come from?

Each vendor publishes an official OpenAPI (or Swagger) specification at a public URL. We fetch it on a schedule, diff it against the previous snapshot, and record every meaningful change. Nothing is hand-written — if it's in the changelog, it changed in the spec.

What counts as a breaking change?

Removed endpoints, removed or newly-required parameters, narrowed response schemas, changed types — anything that can make an existing client fail. Changes that only add functionality are classified as non-breaking.

Can I get notified when one of these APIs changes?

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If your OpenAPI spec is at a public URL you can watch it yourself for free — and with the GitHub Action you can validate and diff it on every pull request. Want your API listed in this directory? Request it here — it takes a few seconds.