Explore APIs
17,350 OpenAPI descriptions. Read the docs, compare revisions or generate a client.
Collections
New this month
7,927 APIs added in the last 30 days.
The biggest APIs
The APIs with the most operations.
Most active
Most new revisions in the last 90 days.
All APIs
17,350- {{79 operations192 revisions{{ title }}@athenian/title
Engineering analytics: measure pull requests, code checks, deployments, JIRA issues, teams and contributors
- CE1,298 operations58 revisionsCernion Energy Tools API@cernion/cernion-energy-tools-api
Energy market APIs: query grid operators, MaStR monitoring, ENTSO-E prices, datasets, forecasts and job polling
- TA17 operations521 revisionsTasks@hubspot/crm-tasks
CRM: create, search and batch-manage to-do items and their links to contacts and deals
- ST23 operations302 revisionsStedi Healthcare@stedi/stedi-healthcare
Healthcare claims: check eligibility and claim status, submit claims, and retrieve remittance advice
- IS15 operations360 revisionsIssue Tracking API@apideck-libraries/issue-tracking-api
Issue tracking: manage tickets, comments, collections, users and tags
- LI14 operations523 revisionsListings@hubspot/crm-listings
CRM: create, search, update and archive listing records in batches or one at a time
- BO89 operations537 revisionsBoomi Data Integration API@rivery/boomi-data-integration-api
Data integration: manage data flows, connections, dataframes, environments and users via REST
- US14 operations532 revisionsUsers@hubspot/crm-users
CRM: manage user records with batch create, read, update, archive and search, plus associations
- MA122 operations602 revisionsManagem API@managem/managem-api
Marketplace: search listings, manage baskets, orders, reviews, disputes and seller listings
- ND109 operations3 revisionsNDI Platform API@nace/ndi-platform-api
Document intelligence: parse, classify and extract data from files, plus searchable workspaces
- KR136 operations577 revisionsKrea API@krea/krea-api
AI media generation: create images, video, 3D models, audio and speech, and enhance or upscale assets
- AC13 operations606 revisionsAccounts@rdstationmentoria/accounts
Account management: members, invitations, roles, workspaces and subscriptions
- DI17 operations558 revisionsDiscounts@hubspot/crm-discounts
CRM: manage discount records, search, batch updates, merges and associations with deals
- TA11 operations512 revisionsTaxes@hubspot/crm-taxes
CRM: manage tax records with create, read, update, archive, batch and search operations
- AS82 operations276 revisionsAssistedInstall@openshift/assistedinstall
OpenShift cluster install: register clusters and hosts, manage manifests, operators and versions
- PL77 operations11 revisionsPloti API@ploti/ploti-api
Geospatial data: find, read and export layers, manage map sessions and data requests
- ER128 operations286 revisionsErgo Node API@ergoplatform/ergo-node-api
Node: query blocks and UTXOs, submit transactions, run a wallet and mining
- CA17 operations541 revisionsCalls@hubspot/crm-calls
CRM: log, search, update and merge call records, with batch and GDPR deletion
- TR71 operations19 revisionsTracePass API@tracepass/tracepass-api
Digital Product Passports: manage passports, products, EPCIS events and EU DPP scope checks
- MA434 operations39 revisionsMaritime API@maritime/maritime-api
Hosted AI agents and sandboxes: deploy, run and wire agents to messaging, email and billing
- TW120 operations8 revisionsTwitterAPIs API@twitterapis/twitterapis-api
Twitter/X data: search tweets and users, read profiles, threads, follower graphs, and post actions
- UN1,117 operations67 revisionsUnified.to API@unified/unified-to-api
Unified API across 30+ SaaS categories: HRIS, CRM, accounting, ticketing, payments and more
- DE24 operations16 revisionsDepict API@depict/depict-api
Product listings: search, recommendations, event tracking and listing lookups across markets and locales
- TR4 operations129 revisionsTranscriptions@hubspot/crm-transcriptions
CRM calling: create, retrieve and delete call transcripts, and handle inbound calls
Showing 1 to 24 of 17,350
Load more