Communications & messaging
778 APIs for SMS, voice, video calls, chat, notifications, or social communication.
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296 APIs added in the last 30 days.
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778- SM5 operations493 revisionsSMS API@apideck-libraries/sms-api
SMS: send, list, update and delete text messages and their delivery status
- SU46 operations71 revisionsSurge@surgeapi/surge
Messaging: send SMS blasts and messages, manage contacts, phone numbers and campaigns
- MA166 operations12 revisionsMatrix Client-Server API@matrix/matrix-client-server-api
Chat: rooms, messages, media, devices, spaces and threads on Matrix homeservers
- SR60 operations11 revisionsSRIFT API@srift/srift-api
Local and public file-sharing daemon: create sessions, send files, relay chat and agent messages
- XQ223 operations513 revisionsXquik API@xquik-dev/xquik-api
Read, search and automate X (Twitter) data: posts, users, communities, Spaces and monitors
- AP68 operations6 revisionsapi.onesignal.com@onesignal/api-onesignal-com
Messaging: send push, email and SMS, manage templates, segments, users and subscriptions
- PR329 operations55 revisionsPrimitive API@primitive/primitive-api
Email infrastructure for AI agents: manage domains, send and receive emails, webhooks, and filters
- PH333 operations617 revisionsPhoenix API by Phone.com@phone/phoenix-api-by-phone-com
Telephony: manage calls, numbers, SMS, voicemail, faxes, devices and call logs
- IZ77 operations17 revisionsiZap API@izap/izap-api
WhatsApp Business: manage chats, send messages and templates, contacts, menus and webhooks
- SK259 operations22 revisionsSkysay API@skysay/skysay-api
Telephony: place policy-gated calls, buy and manage phone numbers, send SMS and run voice agents
- TE1,552 operations126 revisionsTelnyx API@team-telnyx/telnyx-api
Telephony: place calls, send SMS and MMS, manage phone numbers, SIP trunks and porting
- TE1,552 operations834 revisionsTelnyx API@team-telnyx/telnyx-api-2
Telephony: place calls, send SMS and MMS, manage phone numbers, SIP trunks and conferences
- CO13 operations317 revisionsConversations Custom Channels@hubspot/conversations-custom-channels
Custom channels: create and manage messaging channels, their accounts, and published messages
- TR6 operations240 revisionsTransactional Single Send@hubspot/marketing-transactional-single-send
Email: send single transactional emails and manage SMTP API tokens and passwords
- HA85 operations18 revisionsHail@hail/hail
Voice calls, phone numbers, SMS, email and webhooks for AI agents, with contacts and uploads
- PR25 operations32 revisionsProsper Voice@getprosperapp/prosper-voice
Outbound voice campaigns: manage call targets, blacklists, call logs and live calls
- TR322 operations75 revisionsTrytrata API@trytrata/trytrata-api
Voice agents, rooms and calls, plus recordings, notifications and webhooks for managing them
- VO112 operations90 revisionsVoiceBlender API@voiceblender/voiceblender-api
Voice calls: bridge SIP and WebRTC legs into rooms, manage trunks and registrations, stream events
- KA242 operations22 revisionsKaiCalls Public API@kaicalls/kaicalls-public-api
AI voice agents: manage phone numbers, leads, campaigns, SMS, meetings and call analytics
- CA494 operations14 revisionsCarbon Voice API@carbonvoice/carbon-voice-api
Voice messaging: send and manage messages, conversations, contacts, folders and workspaces
- BI531 operations124 revisionsBird API@messagebird/bird-api
Messaging: send email, SMS and WhatsApp, manage templates, contacts and audiences
- AU23 operations4 revisionsautoMessage REST API@automessage/automessage-rest-api
Messaging: send and read iMessages, manage contacts, drafts and webhooks
- SE86 operations108 revisionsSent API - v3@sentdm/sent-dm-api-v3
Messaging: send SMS, WhatsApp and voice, manage contacts, templates and webhooks
- VO21 operations26 revisionsVoygr POI API@voygr/voygr-calls-api
Place validation and enrichment, plus AI voice agents that make outbound business phone calls and return transcripts
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