Services — the AI agent directory

Services in the directory
Service	Tags	Interfaces	Payments	Auth	Score
LiveKit Open-source realtime media infrastructure with the Agents framework, SIP, and phone numbers MCPOpenAPIllms.txt	realtime+4	MCP+2	—	api-key, Messaging	5/5
Resend Email API for developers with React Email, batch sending, and an official MCP server MCPOpenAPIllms.txt	email+3	MCP+2	—	api-key, Messaging	5/5
Vapi Voice agent platform handling telephony, turn-taking, interruptions, and warm transfers MCPOpenAPIllms.txt	voice-agents+3	MCP+2	—	api-key, Messaging	5/5
Knock Notification infrastructure API — workflows, preferences, and multi-channel delivery for agent output MCPOpenAPIllms.txt	notifications+2	MCP+2	—	api-key, Messaging	4/5
Twilio SMS, voice, WhatsApp, and verification APIs, with an official MCP server over the platform MCPOpenAPIllms.txt	sms+4	MCP+2	—	api-key, Messaging	4/5