Communications & messaging
680 APIs for SMS, voice, video calls, chat, notifications, or social communication.
Collections
New this month
304 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
680- CO1 operation109 revisionsConversations Visitor Identification@hubspot/conversations-visitor-identification
Conversations: generate visitor identification tokens for chat widget users
- SY195 operations282 revisionsSyllableSDK@asksyllable/syllablesdk
AI agents: build phone and chat agents, manage channels, conversations, data sources and outbound campaigns
- ST209 operations579 revisionsStream API@getstream/stream-api
Chat: channels, messages, members, moderation blocklists and campaigns
- VO14 operations5 revisionsVoice API | Sinch@sinch/voice-api-sinch
Voice calling: place outgoing calls, control live calls and conferences, and manage numbers and callbacks
- SP209 operations100 revisionsspreed-full@nextcloud/spreed-full
Chat, video calls and breakout rooms: manage rooms, messages, polls, bots and recordings
- SP172 operations94 revisionsspreed@nextcloud/spreed
Conversations: create rooms, chat, calls, polls, recording and live transcription
- TW9 operations66 revisionsTwilio - Content@twilio/twilio-content
Messaging: create, fetch, update and delete message content templates and WhatsApp approval requests
- AP199 operations70 revisionsApache Answer@apache/apache-answer
Q&A community: manage questions, answers, tags, badges, follows, reports and AI conversations
- SI296 operations219 revisionsSignalWire REST API@signalwire/signalwire-rest-api
Telecom: manage phone numbers, calls, messaging, SIP endpoints, video rooms and AI agents
- AN52 operations50 revisionsAndo Public API@ando/ando-public-api
Messaging workspace: manage conversations, messages, agents, calls, files, webhooks and history imports
- VO44 operations45 revisionsVoice Logica API@voicelogica/voice-logica-api
Voice AI: place outbound AI calls, run campaigns, query calls, SMS and SIP trunks
- TI91 operations6 revisionstinysend API@tinysend/tinysend-api
Newsletters and transactional email: send mail, manage subscribers, posts, mailboxes and webhooks
- SU45 operations68 revisionsSurge@surgeapi/surge
SMS: send messages and blasts, manage contacts, campaigns, phone numbers and verifications
- PH333 operations448 revisionsPhoenix API by Phone.com@phone/phoenix-api-by-phone-com
Telephony: manage calls, numbers, SMS, voicemail, faxes, devices and call logs
- CO62 operations5 revisionsComms API@osis/comms-api
Messaging and calls: send texts, place calls, manage lines and create payment requests
- TW103 operations71 revisionsTwilio - Conversations@twilio/conversations-v1
Messaging: create conversations, manage participants, send messages and read delivery receipts
- TA28 operations70 revisionsTamTam Bot API@tamtam/tamtam-bot-api
Messaging: send, edit and pin messages, manage chats, members and bot subscriptions
- PR24 operations25 revisionsProsper Voice@getprosperapp/prosper-voice
Automated voice calling: run outbound call campaigns, manage targets, blacklists, call logs and live calls
- X257 operations20 revisionsX API v2@x/x-api-v2
Social posts, messaging, communities and live audio: read and publish posts, chat, lists, Spaces, trends and news
- XQ213 operations375 revisionsXquik API@xquik-dev/xquik-api
Read and automate X: search posts, look up users and communities, manage monitors and webhooks, and publish tweets
- CA483 operations8 revisionsCarbon Voice API@carbonvoice/carbon-voice-api
Voice messaging API: send and fetch conversations, messages, contacts, and workspace data
- VO135 operations13 revisionsvolai REST API@volai/volai-rest-api
Telephony for voice calls, SMS and AI voice agents: buy numbers, place calls, send texts, read messages
- BI528 operations77 revisionsBird API@messagebird/bird-api
Email, SMS, WhatsApp and realtime messaging: send messages, manage contacts and templates, and track delivery stats
- TE1,509 operations318 revisionsTelnyx API@team-telnyx/telnyx-api-2
Telephony: place calls, send SMS and MMS, manage phone numbers, SIP trunks and conferences
Showing 1 to 24 of 680
Load more