Communications & messaging
723 APIs for SMS, voice, video calls, chat, notifications, or social communication.
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348 APIs added in the last 30 days.
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723- CO18 operations122 revisionsConversations Inbox & Messages@hubspot/conversations-conversations
Inboxes: read and update threads, messages, assignees and channel accounts across chat channels
- PH333 operations547 revisionsPhoenix API by Phone.com@phone/phoenix-api-by-phone-com
Telephony: manage calls, numbers, SMS, voicemail, faxes, devices and call logs
- XQ223 operations473 revisionsXquik API@xquik-dev/xquik-api
Read and write X (Twitter) data: search posts, look up users, manage monitors and webhooks
- CO13 operations195 revisionsConversations Custom Channels@hubspot/conversations-custom-channels
Custom channels: create and manage messaging channels, their accounts, and published messages
- TE1,556 operations501 revisionsTelnyx API@team-telnyx/telnyx-api-2
Telephony: place calls, send SMS and MMS, manage phone numbers, SIP trunks and conferences
- SM5 operations400 revisionsSMS API@apideck-libraries/sms-api
SMS: send, list, update and delete text messages and their delivery status
- SP7 operations3 revisionsSpeechmatics ASR REST API@speechmatics/speechmatics-asr-rest-api
Speech-to-text: submit audio files for transcription and fetch transcripts, job logs and usage
- PO19 operations4 revisionsPostedly Send API@postedly/postedly-send-api
Documents and checks: send files and checks to recipients via quoted, paid mail with tracking
- CL309 operations17 revisionsClawdChat@clawdchat/clawdchat
Social network for AI agents: register agents, publish posts and comments, join circles, follow and search
- IN426 operations46 revisionsInkbox API@inkbox/inkbox-api
Agent communications: email, phone, iMessage and WhatsApp for identities, contacts and webhooks
- HU681 operations22 revisionsHUDL API@meet-align/hudl-api
Video meetings: manage rooms, recordings, transcripts, polls, recaps and team billing
- VO142 operations25 revisionsvolai REST API@volai/volai-rest-api
Voice and SMS: buy numbers, place AI voice agent calls, send SMS and manage campaigns
- TW120 operations8 revisionsTwitterAPIs API@twitterapis/twitterapis-api
Twitter/X data: search tweets and users, read profiles, threads, follower graphs, and post actions
- PR23 operations6 revisionsPremier Letters API@premierletters/premier-letters-api
Mail: send handwritten letters, cards and postcards via USPS, with previews and tracking
- HA82 operations15 revisionsHail@hail/hail
AI agents: place calls, send email and SMS, rent phone numbers, manage contacts
- PR306 operations41 revisionsPrimitive API@primitive/primitive-api
Email infrastructure: manage domains, inbound and sent emails, webhooks, filters and threads
- DI250 operations264 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
- IN103 operations7 revisionsInvite Tracker API@invite-tracker/invite-tracker-api
Discord bot dashboard: manage guild modules, audit logs, giveaways, analytics, and ticket transcripts
- VO44 operations57 revisionsVoice Logica API@voicelogica/voice-logica-api
Voice AI: place outbound AI calls, run campaigns, query calls, SMS and SIP trunks
- SE101 operations3 revisionsSendRaven@sendraven/sendraven
Email for AI agents: send, receive and thread conversations, with approval holds
- TR6 operations210 revisionsTransactional Single Send@hubspot/marketing-transactional-single-send
Email: send single transactional emails and manage SMTP API tokens and passwords
- AD78 operations23 revisionsAdaptlyPost Public API@adaptlypost/adaptlypost-public-api
Social media: schedule posts across 14 platforms, read comments and DMs, and pull analytics
- PI121 operations6 revisionspingwa@pingwa/pingwa
Messaging: send notifications and ask questions, read inboxes, media and replies, plus accounts, keys and billing
- SM3 operations2 revisionsSMS Gateway REST APIv2@optus/sms-gateway-rest-apiv2
SMS messaging: send texts to a single handset and retrieve message status with link shortening
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