Communications & messaging
698 APIs for SMS, voice, video calls, chat, notifications, or social communication.
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321 APIs added in the last 30 days.
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698- RE111 operations60 revisionsRetell SDK@retellai/retell-sdk
Voice AI agents: build and test call agents, phone numbers, chat, and knowledge bases
- BI528 operations95 revisionsBird API@messagebird/bird-api
Messaging: send email, SMS, WhatsApp and Apple messages, manage contacts and templates
- PH333 operations487 revisionsPhoenix API by Phone.com@phone/phoenix-api-by-phone-com
Telephony: manage calls, numbers, SMS, voicemail, faxes, devices and call logs
- TW15 operations90 revisionsTwilio - Notify@twilio/notify-v1
Messaging: send notifications and manage services, credentials and bindings
- TW3 operations78 revisionsTwilio API definition for public-api voice@twilio/twilio-voice
Voice: create, list and fetch transcriptions of call recordings from a media URL or source ID
- SP356 operations176 revisionsSpacebar Server@spacebarchat/spacebar-server
Chat platform: manage webhooks, user settings, channel attachments and avatar decorations
- SI296 operations221 revisionsSignalWire REST API@signalwire/signalwire-rest-api
Telecom: manage phone numbers, calls, messaging, SIP endpoints, video rooms and AI agents
- NH9 operations93 revisionsNHS Notify API@nhs/nhs-notify-api
Messaging: send single or batch notifications, track message status and read recipient responses
- VO452 operations204 revisionsVoIPBin API@voipbin/voipbin-api
Telephony: place calls, record and transcribe them, manage numbers, agents, campaigns and conversations
- TW7 operations162 revisionsTwilio - Pricing@twilio/twilio-pricing
Pricing: look up messaging, voice and phone number rates by country
- PO135 operations15 revisionsPortproof API@portproof/portproof-api
Proxy traffic: buy and track GB balances, build pool URLs and check usage, plus SMS and eSIM purchases
- TW118 operations6 revisionsTwitterAPIs API@twitterapis/twitterapis-api
Twitter/X data: search tweets and users, read profiles, threads and follower graphs, and run write actions
- BL47 operations20 revisionsBlotato API@blotato/blotato-api
Social media publishing: schedule posts, manage DMs, comments, analytics and videos
- 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
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