Communications & messaging
697 APIs for SMS, voice, video calls, chat, notifications, or social communication.
Collections
New this month
320 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
697- BI529 operations94 revisionsBird API@messagebird/bird-api
Email, SMS, WhatsApp and realtime messaging: send messages, manage contacts, templates and sending domains
- PH333 operations486 revisionsPhoenix API by Phone.com@phone/phoenix-api-by-phone-com
Telephony: manage calls, numbers, SMS, voicemail, faxes, devices and call logs
- PR24 operations29 revisionsProsper Voice@getprosperapp/prosper-voice
Outbound calling: run campaigns, manage call targets, blacklists, call logs and live calls
- AP191 operations40 revisionsAPI Reference@agentmail-to/agentmail-to
Email: create inboxes, send and read messages, threads, drafts, webhooks and domains for agents
- LI78 operations14 revisionsLinq Partner API@linqapp/linq-partner-api
iMessage: send and receive messages, manage chats, attachments, payments and calls
- XQ218 operations405 revisionsXquik API@xquik-dev/xquik-api
Read, search and automate X data: posts, users, communities, Spaces, and monitors with webhooks
- VO44 operations51 revisionsVoice Logica API@voicelogica/voice-logica-api
Voice AI: place outbound AI calls, run campaigns, query calls, SMS and SIP trunks
- X259 operations25 revisionsX API v2@x/x-api-v2
Social posts, DMs, live broadcasts, calls, communities and community notes, plus account activity streams
- DO218 operations3 revisionsDograh API@dograh/dograh-api
Voice AI: build phone call workflows, initiate calls and handle telephony webhooks
- SK38 operations8 revisionsSkipCalls Public API@skipcalls/skipcalls-public-api
Voice agents: configure agents, schedule and inspect calls, manage inbound calls, contacts and appointments
- ZO41 operations1 revisionZoho CPaaS@zoho/zoho-cpaas
Messaging: send email, voice calls, SMS and WhatsApp, and retrieve their logs
- PU7 operations1 revisionPublic Demio API@demio/public-demio-api
Webinars: list events, register attendees and pull per-date participant reports
- CL11 operations1 revisionclix/external/v1/clix.proto@clix/clix-external-v1-clix-proto
Push notifications: send messages, manage users and devices, log events, trigger campaigns
- IN16 operations1 revisionInfobip OpenAPI Specification@infobip/infobip-openapi-specification-2
Messaging: send SMS and binary texts, schedule messages, and fetch delivery reports and inbound SMS
- IN999 operations1 revisionInfobip OpenAPI Specification@infobip/infobip-openapi-specification
Customer engagement: send SMS, manage person profiles and contact data, 2FA and AI assistants
- PR174 operations76 revisionsPrimitive API@primitive/primitive-api-2
Email: manage domains, inbound and sent mail, webhooks, filters and search via API
- TW1 operation206 revisionsTwilio - Chat@twilio/twilio-chat
Messaging: manage chat channels, including updating channel details within a service
- GO55 operations10 revisionsGoogle Chat API@google/chat
Chat apps: manage spaces, members, messages, custom emojis, media uploads and user availability
- RE111 operations59 revisionsRetell SDK@retellai/retell-sdk
Voice AI agents: build and test call agents, phone numbers, chat, and knowledge bases
- VO452 operations203 revisionsVoIPBin API@voipbin/voipbin-api
Telephony: place calls, record and transcribe them, manage numbers, agents, campaigns and conversations
- SP172 operations114 revisionsspreed@nextcloud/spreed
Conversations: create rooms, chat, calls, polls, recording and live transcription
- DI136 operations2 revisionsDIP - Send Messages & Receive Publications@elexon/mhhs-dip
Smart meter data exchange: send and validate MHHS messages, manage channel publications and delivery status
- SO10 operations7 revisionsSocialToAI API@socialtoai/socialtoai-api
Social media: read public posts, comments, profiles and trends across 18 platforms
- TE14 operations6 revisionstextbee API@textbee/textbee-api
SMS: send texts and webhook events through your own Android phones
Showing 1 to 24 of 697
Load more