Communications & messaging
698 APIs for SMS, voice, video calls, chat, notifications, or social communication.
Collections
New this month
321 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- TW1 operation155 revisionsTwilio - Lookups@twilio/twilio-lookups
Telephony: look up phone number details such as carrier, type and country
- TW24 operations90 revisionsTwilio - Trunking@twilio/trunking-v1
Trunking: create and manage SIP trunks, origination URLs, credential lists, IP access control and phone numbers
- DI250 operations133 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
- TR6 operations182 revisionsTransactional Single Send@hubspot/marketing-transactional-single-send
Email: send single transactional emails and manage SMTP API tokens and passwords
- TW25 operations90 revisionsTwilio - Proxy@twilio/proxy-v1
Proxy: manage services, phone number pools, sessions, participants and message interactions
- CO1 operation146 revisionsConversations Visitor Identification@hubspot/conversations-visitor-identification
Conversations: generate visitor identification tokens for chat widget users
- SK252 operations15 revisionsSkysay API@skysay/skysay-api
Telephony: place policy-gated calls, buy and manage phone numbers, send SMS and run outbound campaigns
- HO193 operations15 revisionsHonkIO API@honkio/honkio-api
SMS messaging for Canada: send texts, provision numbers, and record CASL consent
- WA132 operations74 revisionsWavix APIs@wavix/wavix-apis
Communications: send SMS and MMS, place calls, manage numbers, SIP trunks and CDRs
- VO452 operations224 revisionsVoIPBin API@voipbin/voipbin-api
Telephony: place calls, record and transcribe them, manage numbers, agents, campaigns and conversations
- TW120 operations7 revisionsTwitterAPIs API@twitterapis/twitterapis-api
Twitter/X data: search tweets and users, read profiles, threads, follower graphs, and post actions
- PR174 operations96 revisionsPrimitive API@primitive/primitive-api-2
Email: manage domains, inbound and sent mail, webhooks, filters and search via API
- TW47 operations164 revisionsTwilio - Numbers@twilio/twilio-numbers
Phone numbers: hosting, regulatory bundles, end users and short code applications
- CH31 operations5 revisionsChatway Developer Docs@chatway/chatway-developer-docs
Live chat: REST API and webhooks to manage contacts, agents, conversations, messages and widgets
- SP7 operations88 revisionsspreed-backend-sipbridge@nextcloud/spreed-backend-sipbridge
Spreed conferencing: look up rooms, verify SIP dial-in and dial-out numbers, create guests
- SE275 operations8 revisionsSendly API@sendly/sendly-api
Email delivery: send transactional and campaign emails, manage contacts, lists, domains and webhooks
- CA289 operations16 revisionsCall2Me API@call2me/call2me-api
Voice AI: build agents that place and receive phone calls, with transcripts and recordings
- TR23 operations14 revisionsTransmit Message API@kudosity/transmit-message-api
Messaging: send SMS, MMS, RCS and WhatsApp messages, register senders and manage webhooks
- VA145 operations166 revisionsVapi API@vapiai/vapi-api
Voice AI: build assistants, place calls, run campaigns and manage phone numbers
- TW1 operation226 revisionsTwilio - Chat@twilio/twilio-chat
Messaging: manage chat channels, including updating channel details within a service
- TW54 operations180 revisionsTwilio - Ip_messaging@twilio/twilio-ip-messaging
Messaging: manage chat services, channels, members, messages, users, roles and webhooks
- TR121 operations90 revisionstraQ API@traptitech/traq-api
Chat: manage channels, messages, users, bots, webhooks, files and OAuth2 tokens
- BI529 operations97 revisionsBird API@messagebird/bird-api
Email, SMS and WhatsApp messaging: send messages, manage contacts, audiences, templates and delivery analytics
- SP209 operations140 revisionsspreed-full@nextcloud/spreed-full
Chat, video calls and breakout rooms: manage rooms, messages, polls, bots and recordings
Showing 1 to 24 of 697
Load more