Explore APIs
17,359 OpenAPI descriptions. Read the docs, compare revisions or generate a client.
Collections
New this month
6,287 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
17,359- GL72 operations519 revisionsGlean Client API@gleanwork/glean-client-api
Enterprise search: query the index, chat with AI, manage collections, pins, answers and agents
- PH85 operations83 revisionsPhase Two Admin REST API@p2-inc/phase-two-admin-rest-api
Organizations: manage members, roles, invitations, identity providers, domains and SCIM provisioning
- UR4 operations150 revisionsUrl Mappings@hubspot/cms-url-mappings
CMS: create, list, fetch and delete URL redirect mappings for HubSpot pages
- KO0 operations202 revisionsKoha REST API@koha-community/koha-rest-api
- CH112 operations101 revisionsCheckmate API@bluewave-labs/checkmate-api
Uptime monitoring: configure HTTP, port and ping checks, track incidents, alert channels and status pages
- GL91 operations508 revisionsGlean API@gleanwork/glean-api
Enterprise search: index custom content, query documents and people, manage chats, agents and collections
- FR125 operations43 revisionsFrikanalen Django API@frikanalen/frikanalen-django-api
Broadcasting: manage videos, schedule items, live sources, news bulletins and TV channel slots
- WI953 operations1,203 revisionsWindmill API@windmill/windmill-api
Workflow automation: run scripts and flows, schedule jobs, and wire up triggers for HTTP, Kafka, SQS and more
- XQ224 operations526 revisionsXquik API@xquik-dev/xquik-api
X data: search posts, read users and communities, monitor accounts, and post tweets via API
- WA2 operations4 revisionsWarehouse Management API@pypi/warehouse-management-api
- PA66 operations706 revisionsPages@hubspot/cms-pages
- MA36 operations791 revisionsMarketing Marketing Events@hubspot/marketing-marketing-events
Marketing events: create and track events, record attendance, and link contact lists
- CO11 operations1,217 revisionsCommunications@hubspot/crm-communications
CRM: log and manage messages and call records, with search, batch and CRUD operations
- DA235 operations667 revisionsDatadog API V1 Collection@datadog/datadog-api-v1-collection
Monitoring: manage dashboards, monitors, SLOs, events, hosts, downtimes and cloud integrations
- SQ291 operations697 revisionsSqle API Docs@actiontech/sqle-api-docs
SQL auditing: create audit tasks and scan plans, manage rules, whitelists and workflows
- CA17 operations1,298 revisionsCalls@hubspot/crm-calls
CRM: log, search, update and merge call records, with batch and GDPR deletion
- ST612 operations664 revisionsStripe API@stripe/spec3
Payments and billing: charge cards, manage customers, invoices, subscriptions and payouts
- OR12 operations1,231 revisionsOrders@hubspot/crm-orders
CRM: create, search, update, merge and archive sales order records in bulk
- PR13 operations513 revisionsProperties@hubspot/crm-properties
CRM: define custom fields and field groups for contacts, companies and deals
- SO368 operations266 revisionsSORMAS REST API@sormas-foundation/sormas-rest-api
Outbreak surveillance: sync cases, contacts, events, samples, visits and facilities
- PO30 operations778 revisionsPosts@hubspot/cms-posts
- IN22 operations132 revisionsInference Gateway API@inference-gateway/inference-gateway-api
AI gateway: route chat, image, audio, and video requests to many LLM providers
- FE14 operations1,356 revisionsFees@hubspot/crm-fees
CRM: create, read, update, search and archive fee records, plus batch operations and associations
- LI14 operations1,261 revisionsLine Items@hubspot/crm-line-items
CRM: create, read, update, search and archive products attached to deals and quotes
Showing 1 to 24 of 17,359
Load more