Communications & messaging
718 APIs for SMS, voice, video calls, chat, notifications, or social communication.
Collections
New this month
342 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
718- DI250 operations155 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
- PH333 operations512 revisionsPhoenix API by Phone.com@phone/phoenix-api-by-phone-com
Telephony: manage calls, numbers, SMS, voicemail, faxes, devices and call logs
- FA31 operations7 revisionsFax API@sinch/fax-api
Fax: send and receive faxes, manage services, cover pages, email domains and templates
- TW25 operations116 revisionsTwilio - Proxy@twilio/proxy-v1
Proxy: manage services, phone number pools, sessions, participants and message interactions
- TR6 operations204 revisionsTransactional Single Send@hubspot/marketing-transactional-single-send
Email: send single transactional emails and manage SMTP API tokens and passwords
- TW47 operations193 revisionsTwilio - Numbers@twilio/twilio-numbers
Phone numbers: hosting, regulatory bundles, end users and short code applications
- TW54 operations232 revisionsTwilio - Ip_messaging@twilio/twilio-ip-messaging
Messaging: manage chat services, channels, members, messages, users, roles and webhooks
- TW1 operation295 revisionsTwilio - Chat@twilio/twilio-chat
Messaging: manage chat channels, including updating channel details within a service
- SP209 operations181 revisionsspreed-full@nextcloud/spreed-full
Chat, video calls and breakout rooms: manage rooms, messages, polls, bots and recordings
- TW103 operations126 revisionsTwilio - Conversations@twilio/conversations-v1
Messaging: create conversations, manage participants, send messages and read delivery receipts
- TR121 operations130 revisionstraQ API@traptitech/traq-api
Chat: manage channels, messages, users, bots, webhooks, files and OAuth2 tokens
- AC1 operation2 revisionsAccount Notifications@citi/account-notifications
Corporate banking: subscribe to push notifications for account updates via webhooks in XML or JSON
- TE1,547 operations365 revisionsTelnyx API@team-telnyx/telnyx-api-2
Telephony: place calls, send SMS and MMS, manage phone numbers, SIP trunks and conferences
- RE111 operations62 revisionsRetell SDK@retellai/retell-sdk
Voice AI agents: build and test call agents, phone numbers, chat, and knowledge bases
- SM5 operations260 revisionsSMS API@apideck-libraries/sms-api
SMS: send, list, update and delete text messages and their delivery status
- FL440 operations62 revisionsFluxer API@fluxer/fluxer-api
Messaging and VoIP: send messages, manage guilds, channels, invites and webhooks
- BI529 operations101 revisionsBird API@messagebird/bird-api
Email, SMS and WhatsApp messaging: send messages, manage contacts, audiences, templates and delivery analytics
- IZ77 operations13 revisionsiZap API@izap/izap-api
WhatsApp Business: manage chats, send messages and templates, contacts, menus and webhooks
- RE75 operations12 revisionsRedditapis API@redditapis/redditapis-api
Reddit data access: read posts and comments, search communities, post comments and send DMs
- TW7 operations226 revisionsTwilio - Pricing@twilio/twilio-pricing
Pricing: look up messaging, voice and phone number rates by country
- AP199 operations129 revisionsApache Answer@apache/apache-answer
Q&A community: manage questions, answers, tags, badges, follows, reports and AI conversations
- GR132 operations25 revisionsGroundmail API@groundmail/groundmail-api
Transactional email: send messages, manage domains, senders, mailboxes and webhooks
- EL64 operations13 revisionsElocuenti API@elocuenti/elocuenti-api
Customer messaging: manage contacts, WhatsApp conversations, templates, funnels and AI calls in Colombia
- X259 operations26 revisionsX API v2@x/x-api-v2
Social posts, DMs, live broadcasts, calls, communities and community notes, plus account activity streams
Showing 1 to 24 of 718
Load more