Explore APIs
16,805 OpenAPI descriptions. Read the docs, compare revisions or generate a client.
Collections
New this month
7,382 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
16,805- ME0 operations49 revisionsMedusa Storefront API@medusajs/medusa-storefront-api
- GI18 operations18 revisionsgit-pkgs proxy API@git-pkgs/git-pkgs-proxy-api
Package proxy: cache, push and scan dependencies, look up vulnerabilities, browse archive files
- GR14 operations11 revisionsGrants Config Broker API@defra/grants-config-broker-api-2
Grant configuration: manage versions, releases, archiving and feature control flags
- DU113 operations8 revisionsDuplicati API Documentation@duplicati/duplicati-api-documentation
Backup: manage backup jobs, connection strings, command-line runs and log data
- AY356 operations180 revisionsAyunis Core API@ayunis-core/ayunis-core-api
Chat platform: manage users, teams, threads, knowledge bases, skills, invites and SSO for organizations
- ME0 operations77 revisionsMedusa Admin API@medusajs/medusa-admin-api
- AC68 operations90 revisionsAcontext API@memodb-io/acontext-api
Agent infrastructure: manage sessions, sandboxes, disks, artifacts, agent skills, users and projects
- MA36 operations148 revisionsMarketing Marketing Events@hubspot/marketing-marketing-events
Marketing events: create and track events, record attendance, and link contact lists
- LI14 operations266 revisionsLine Items@hubspot/crm-line-items
CRM: create, read, update, search and archive products attached to deals and quotes
- VO98 operations88 revisionsvoltcode@martian-engineering/voltcode
Coding agent sessions: manage sessions, tools, MCP servers, projects, files, and config
- CA14 operations286 revisionsCarts@hubspot/crm-carts
CRM: create, search, update and archive shopping cart records in HubSpot
- US14 operations295 revisionsUsers@hubspot/crm-users
CRM: manage user records with batch create, read, update, archive and search, plus associations
- CO10 operations234 revisionsCommunication Preferences Subscriptions@hubspot/communication-preferences-subscriptions
Marketing: read and update contact subscription statuses, unsubscribe contacts, generate opt-out links
- OP83 operations91 revisionsOpen Tree Hole@opentreehole/open-tree-hole
Anonymous BBS: browse divisions and holes, post floors, manage tags, reports, subscriptions and bans
- CO17 operations294 revisionsCompanies@hubspot/crm-companies
CRM: manage company records, search them, merge duplicates and link them to other objects
- HO436 operations188 revisionsHostinger API@hostinger/hostinger-api
Hosting, domains, VPS, email and billing: manage websites, DNS records, databases, mailboxes and subscriptions
- BO88 operations90 revisionsBodhi App - Management API@bodhisearch/bodhi-app-management-api
AI models: manage local model files, aliases, remote API models, MCP servers, tokens and settings
- LE64 operations122 revisionsLedger v3 API@formancehq/ledger-api
Ledgers: record transactions, manage accounts, balances, numscripts and audit logs
- CR11 operations217 revisionsCRM Objects@hubspot/crm-objects
CRM records: create, read, search, update and archive companies, contacts, deals and tickets
- AP17 operations320 revisionsAppointments@hubspot/crm-appointments
CRM: manage appointment records, their associations, batch operations and search
- AG187 operations50 revisionsAgentZ HTTP API@accuknox/agentz-http-api
AI agent platform: manage agents, workflows, dashboards, secrets, sandboxes and inference providers
- GL9 operations9 revisionsGlama MCP API@glama/glama-mcp-api
Developer tools: browse MCP server directory, remote connectors, hosted instances and usage telemetry
- FO88 operations60 revisionsFormbricks API v3@formbricks/formbricks-api-v3
Surveys, responses and dashboards: build surveys with AI, collect responses, chart results and manage contacts
- VI3 operations131 revisionsVideo Conferencing Extension@hubspot/crm-video-conferencing-extension
Video conferencing: read, create, update and delete per-app settings for HubSpot CRM integrations
Showing 1 to 24 of 16,805
Load more