Communications & messaging
684 APIs for SMS, voice, video calls, chat, notifications, or social communication.
Collections
New this month
306 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
684- X258 operations23 revisionsX API v2@x/x-api-v2
Social posts, DMs, lists, spaces, calls, communities and trends: read and publish content, manage chats
- TW118 operations4 revisionsTwitterAPIs API@twitterapis/twitterapis-api
Twitter/X data: search tweets and users, read profiles, threads and follower graphs, and run write actions
- AP1,595 operations47 revisionsAPI Reference - Developer tools@infomaniak/api-reference-developer-tools
Infomaniak cloud: video hosting, radio streaming, newsletters, mail, drive files and team chat APIs
- VO60 operations4 revisionsVoidMob Public API@voidmob/voidmob-public-api
Telephony and proxies: SMS verifications, number rentals, mobile proxies, eSIM orders and crypto deposits
- AG144 operations2 revisionsAgentboxd API@agentboxd/agentboxd-api
Email inboxes and messages for AI agents: create inboxes, send and search mail, manage drafts and webhooks
- GR129 operations22 revisionsGroundmail API@groundmail/groundmail-api
Transactional email: send mail, manage domains, senders, mailboxes and webhooks
- PH333 operations471 revisionsPhoenix API by Phone.com@phone/phoenix-api-by-phone-com
Telephony: manage calls, numbers, SMS, voicemail, faxes, devices and call logs
- PO21 operations19 revisionspost bridge API@post-bridge/post-bridge-api
Social media: publish posts across platforms, manage accounts, media, and analytics
- BL47 operations19 revisionsBlotato API@blotato/blotato-api
Social media publishing: schedule posts, manage DMs, comments, analytics and videos
- BL140 operations14 revisionsBlueticked API@blueticked/blueticked-api
Messaging, contacts, flows, campaigns and commerce across WhatsApp, SMS and email: send, manage and sell
- VO137 operations18 revisionsvolai REST API@volai/volai-rest-api
Phone numbers, calls and SMS, plus AI voice agents for placing and receiving calls
- IN425 operations42 revisionsInkbox API@inkbox/inkbox-api
Agent communications: email, phone, iMessage and WhatsApp with contacts, identities and webhooks
- VA145 operations165 revisionsVapi API@vapiai/vapi-api
Voice AI: build assistants, place calls, run campaigns and manage phone numbers
- WH110 operations31 revisionsWhatsMiau API@verbeux-ai/whatsmiau-api
WhatsApp messaging: send media and contacts, manage groups, communities, calls and webhooks
- OP58 operations4 revisionsOpenMail API@openmail/openmail-api
Email infrastructure: create inboxes, send and receive mail, manage threads and webhooks
- SU45 operations69 revisionsSurge@surgeapi/surge
SMS: send messages and blasts, manage contacts, campaigns, phone numbers and verifications
- FL435 operations58 revisionsFluxer API@fluxer/fluxer-api
Messaging and VoIP: send messages, manage guilds, channels, invites and webhooks, search and voice
- HO193 operations14 revisionsHonkIO API@honkio/honkio-api
SMS messaging for Canada: send texts, provision numbers, and record CASL consent
- TW197 operations74 revisionsTwilio - Api@twilio/twilio-api
Communications: place and track calls, send messages, and manage phone numbers, SIP domains and recordings
- RE111 operations58 revisionsRetell SDK@retellai/retell-sdk
Voice AI agents: build and test call agents, phone numbers, chat, and knowledge bases
- CU279 operations3 revisionsCurviate API@curviate/curviate-api
Agent-native LinkedIn access: profiles, messaging, invites, feed and company pages via API
- HU681 operations21 revisionsHUDL API@meet-align/hudl-api
Video meetings: manage rooms, recordings, transcripts, polls, recaps and team billing
- CO100 operations22 revisionsCommsHarbor@commsharbor/commsharbor
Domain email: check SPF, DKIM, DMARC and MX records, manage mailboxes and aliases
- PR293 operations34 revisionsPrimitive API@primitive/primitive-api
Email infrastructure: manage domains, send and receive email, and set up webhooks and filters
Showing 1 to 24 of 684
Load more