Communications & messaging
683 APIs for SMS, voice, video calls, chat, notifications, or social communication.
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305 APIs added in the last 30 days.
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683- PH333 operations469 revisionsPhoenix API by Phone.com@phone/phoenix-api-by-phone-com
Telephony: manage calls, numbers, SMS, voicemail, faxes, devices and call logs
- 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
- CO883 operations29 revisionsConnexCS Control Panel API@connexcs/connexcs-control-panel-api
VoIP switching: manage routing, customers, DIDs, invoices, cards and AI agents
- ST209 operations586 revisionsStream API@getstream/stream-api
Chat: channels, messages, members, moderation blocklists and campaigns
- TW1 operation122 revisionsTwilio - Lookups@twilio/twilio-lookups
Telephony: look up phone number details such as carrier, type and country
- TR6 operations171 revisionsTransactional Single Send@hubspot/marketing-transactional-single-send
Email: send single transactional messages and manage SMTP API tokens and passwords
- IZ76 operations11 revisionsiZap API@izap/izap-api
WhatsApp Business automation: send messages, manage chats, contacts, templates and bulk sends
- BI528 operations87 revisionsBird API@messagebird/bird-api
Email, SMS, WhatsApp and realtime messaging: send messages, manage contacts and templates, and track delivery stats
- SY198 operations305 revisionsSyllableSDK@asksyllable/syllablesdk
AI agents: configure agents, channels, conversations, data sources and outbound campaigns for voice and SMS
- AN112 operations70 revisionsAnarlog API@fastrepl/anarlog-api
Speech-to-text, speaker diarization, LLM chat, calendar, mail, Slack, GitHub tickets and meeting imports
- DI250 operations116 revisionsDiscord HTTP API (Preview)@discord/discord-http-api-preview
Chat, servers, users and bots: manage channels, guilds, webhooks, lobbies and stickers via the Discord v10 API
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