Communications & messaging
783 APIs for SMS, voice, video calls, chat, notifications, or social communication.
Collections
New this month
300 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
785- VA145 operations171 revisionsVapi API@vapiai/vapi-api
Voice AI agents: build assistants, place calls, run chats, and manage phone numbers
- VO463 operations244 revisionsVoIPBin API@voipbin/voipbin-api
Cloud telephony: place and manage calls, conferences, SMS, AI agents and contact center queues
- PR329 operations57 revisionsPrimitive API@primitive/primitive-api
Email infrastructure for AI agents: manage domains, send and receive emails, webhooks, and filters
- ME114 operations16 revisionsMemchats API@memchats/memchats-api
Conversation memory and AI counsel: ask Alma about contacts, manage chats, contacts and imports
- TE83 operations3 revisionsTextForAgents API@textforagents/textforagents-api
SMS for AI agents: send texts, manage 10DLC brand and campaign registration, and track messages
- PH333 operations625 revisionsPhoenix API by Phone.com@phone/phoenix-api-by-phone-com
Telephony: manage calls, numbers, SMS, voicemail, faxes, devices and call logs
- CO52 operations13 revisionsComms API@osis/comms-api
Messaging and calls: send texts and polls, place calls, and manage dedicated phone lines
- XQ223 operations515 revisionsXquik API@xquik-dev/xquik-api
X data: search and read posts, users, communities and trends, plus post writes, monitors and webhooks
- CO15 operations19 revisionsConvai API@convai/convai-api
Group chat sessions: connect, disconnect, upload and describe images, plus character features and health checks
- DI95 operations51 revisionsDiscourse API Documentation@discourse/discourse-api-documentation
Forums: manage topics, posts, users, categories, groups, badges and backups
- PO163 operations5 revisionsPostproxy Social Media API@postproxy/postproxy-social-media-api
Social media: publish posts, manage comments and DMs across major platforms
- TW117 operations7 revisionsTwittrAPI API@twittrapi/twittrapi-api
Public X/Twitter data: users, tweets, search, communities, lists, jobs and trends, plus posting from your account
- CO42 operations6 revisionsCoral API@urchin/coral-api
Hypixel player and guild stats, Urchin cheater blacklist tags, and Discord account linking
- TE41 operations4 revisionsTeler API Reference@frejun/teler-api-reference
Voice calls: place outbound calls, control live calls, manage SIP trunks and numbers
- SU49 operations72 revisionsSurge@surgeapi/surge
SMS and voice messaging: send blasts, manage contacts, phone numbers, campaigns and verifications
- IN327 operations8 revisionsIndi Agent API - First Principles@projectindi/indi-agent-api-first-principles
Child care tracking: children, care team invites, todos, calendar events, chat and feed
- TE1,552 operations875 revisionsTelnyx API@team-telnyx/telnyx-api-2
Telephony: place calls, send SMS and MMS, manage phone numbers, SIP trunks and conferences
- CO13 operations325 revisionsConversations Custom Channels@hubspot/conversations-custom-channels
Custom channels: create and manage messaging channels, their accounts, and published messages
- SK259 operations23 revisionsSkysay API@skysay/skysay-api
Telephony: place policy-gated calls, buy and manage phone numbers, send SMS and run voice agents
- PO21 operations20 revisionspost bridge API@post-bridge/post-bridge-api
Social media: publish posts across platforms, manage accounts, media, and analytics
- IN42 operations16 revisionsInboxapp API@inboxapp/inboxapp-api
Team messaging: read and send threads, messages and contacts, with CRM tags and statuses
- CO100 operations25 revisionsCommsHarbor@commsharbor/commsharbor
Domain email: check SPF, DKIM, DMARC and MX records, manage mailboxes and aliases
- BL140 operations15 revisionsBlueticked API@blueticked/blueticked-api
Messaging, contacts, flows, campaigns and commerce across WhatsApp, SMS and email: send, manage and sell
- FL443 operations67 revisionsFluxer API@fluxer/fluxer-api
Chat: messaging in channels and guilds, friend and group accounts, voice calls, invites and webhooks
Showing 1 to 24 of 785
Load more