Communications & messaging
784 APIs for SMS, voice, video calls, chat, notifications, or social communication.
Collections
New this month
301 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
785- TE1,552 operations955 revisionsTelnyx API@team-telnyx/telnyx-api-2
Telephony: place calls, send SMS and MMS, manage phone numbers, SIP trunks and conferences
- CO13 operations355 revisionsConversations Custom Channels@hubspot/conversations-custom-channels
Custom channels: create and manage messaging channels, their accounts, and published messages
- BI534 operations128 revisionsBird API@messagebird/bird-api
Email, SMS, WhatsApp and voice messaging: send messages, manage contacts, templates and analytics
- MI335 operations23 revisionsMinds Public API@getminds/minds-public-api
Minds: manage Audiences, Studies, Minds, chats, folders, billing and API keys via REST
- DI1,249 operations207 revisionsDialogBrain v2 API Gateway@dialogbrain/dialogbrain-v2-api-gateway
Inbox, channels, AI agents and workspace integrations: list threads, agents, files and knowledge data
- XQ223 operations524 revisionsXquik API@xquik-dev/xquik-api
Read and automate X: search posts, look up users, manage monitors, webhooks and AI analysis
- SE923 operations35 revisionsSendSeven@sendseven/sendseven
Messaging: send WhatsApp, SMS and Telegram messages, manage conversations, campaigns and contacts
- SH238 operations40 revisionsshipmail API@shipmail/shipmail-api
Email, calendar and booking: send messages, manage mailboxes, domains, newsletters and scheduling pages
- SP211 operations248 revisionsspreed-full@nextcloud/spreed-full
Video calls, chat rooms, polls, recordings and live transcription for WebRTC conferencing
- PH333 operations635 revisionsPhoenix API by Phone.com@phone/phoenix-api-by-phone-com
Telephony: manage calls, numbers, SMS, voicemail, faxes, devices and call logs
- PR336 operations60 revisionsPrimitive API@primitive/primitive-api
Email infrastructure: send and receive email, manage domains, webhooks, filters and threads
- SP171 operations243 revisionsspreed@nextcloud/spreed
Chat, calls, rooms, polls, recordings and live transcription for team conversations
- SP7 operations90 revisionsspreed-backend-sipbridge@nextcloud/spreed-backend-sipbridge
Spreed conferencing: look up rooms, verify SIP dial-in and dial-out numbers, create guests
- SP9 operations98 revisionsspreed-federation@nextcloud/spreed-federation
Chat and video rooms: list, accept or decline federation invites, join or leave rooms, fetch user avatars
- ST210 operations620 revisionsStream API@getstream/stream-api
Chat: manage channels, send messages, moderate users and run campaigns, with block lists
- WH28 operations12 revisionsWhatsMCP API@whatsmcp/whatsmcp-api
WhatsApp messaging: send, edit and delete messages, manage chats, contacts and templates
- SA423 operations10 revisionsSalt Agent API@saltapp/salt-agent-api
Salt: end-to-end encrypted chats, payments, folders, jobs and agent identity for AI agents and people
- SM5 operations495 revisionsSMS API@apideck-libraries/sms-api
SMS: send, list, update and delete text messages and their delivery status
- SE86 operations109 revisionsSent API - v3@sentdm/sent-dm-api-v3
Messaging: send SMS, WhatsApp and voice, manage contacts, templates and webhooks
- VO44 operations60 revisionsVoice Logica API@voicelogica/voice-logica-api
Voice AI: place outbound AI calls, run campaigns, query calls, SMS and SIP trunks
- X260 operations44 revisionsX API v2@x/x-api-v2
Posts, DMs, lists, communities and live broadcasts: read and publish X content, manage bots and notes
- CO867 operations41 revisionsConnexCS Control Panel API@connexcs/connexcs-control-panel-api
VoIP switching and routing: manage carriers, customers, DIDs, invoices and call-center queues
- TE56 operations2 revisionsTextla API@textla/textla-api
Messaging: manage contacts, send SMS campaigns, track analytics and webhooks
- A/63 operations2 revisionsA/SIDE API@shopseen/a-side-api
Social network: mutual follows, groups, stories, posts, and encrypted direct messages
Showing 1 to 24 of 785
Load more