Communication API Directory
Communication APIs with agent-ready surfaces — email, SMS, chat, voice.
4216
Sites Indexed
34
Avg Score
Wire into your agent — one line
curl -fsSL https://nothumansearch.ai/install | sh
curl -fsSL https://aidevboard.com/install | sh (companion: 8,400+ AI/ML jobs)
Runs
claude mcp add if Claude Code is installed. Prints Cursor/Cline/Continue snippets otherwise.56 entries in this directory
Quo (formerly OpenPhone) | Best Phone System for Startups & Small Businesses
openphone.com
Quo brings your calls, texts, and contacts together in one AI-powered shared space. Keep your team aligned, respond faster, and ensure every customer feels valued.
API
Schema.org
communication
20
One platform to connect | Zoom
zoom.us
Modernize workflows with Zoom's trusted collaboration tools: including video meetings, Zoom Chat, VoIP phone, webinars, whiteboard, contact center, and events.
API
Schema.org
communication
20
The AI Customer Support Platform for Every Business - Crisp
crisp.chat
Crisp is the ultimate all-in-one AI-powered multichannel messaging platform that helps businesses connect instantly with their customers or leads who are waiting for support. With its quickly evolving set of tools, Crisp is leading businesses through the AI-driven revolution by using conversations to unlock hypergrowth.
API
Schema.org
communication
20
Brevo: Email & SMS Marketing, CRM & Automation Platform
brevo.com
Brevo is the most intuitive all-in-one customer engagement platform: email and SMS marketing, automation, CRM, live chat, and transactional email. Try it free.
API
Schema.org
communication
20
Powerful, Easy-To-Use Marketing Automation | Drip
drip.com
Trusted by thousands of B2C brands who have outgrown their platform, Drip helps brands level-up their email marketing strategy with a powerful, affordable, easy-to-use marketing automation platform.
API
Schema.org
communication
20
Customer.io Platform: Automation, Data, Content Creation
customer.io
Explore Customer.io, the data-driven platform for personalized customer journeys across all channels, fueled by first-party data.
API
Schema.org
communication
20
Discord - Group Chat That’s All Fun & Games
discord.com
Discord is great for playing games and chilling with friends, or even building a worldwide community. Customize your own space to talk, play, and hang out.
API
Schema.org
communication
20
ClickSend | Business SMS and MMS via Web, Integration or API
clicksend.com
Communicate with your customers and staff via SMS and MMS with ClickSend. From single to scale by web app, API or integration.
API
Schema.org
communication
20
Inbox Zero | Automate and clean your inbox
getinboxzero.com
Your AI executive assistant to reach inbox zero fast. Automate emails, bulk unsubscribe, block cold emails, and analytics. Open-source
API
Schema.org
communication
20
DMARC Solution for Businesses | DmarcDkim.com
dmarcdkim.com
DmarcDkim.com provides an easy-to-follow action plan to help you resolve email delivery issues with DMARC.
API
Schema.org
communication
20
Home | Twitch Developers
dev.twitch.tv
Live Streaming, Meet Developers.
API
Schema.org
communication
20
SMS Messaging, Voice, Email, Video & Verification APIs | Sinch
sinch.com
Unlock meaningful conversations across the customer journey with programmable SMS, voice, email, video, & verification APIs!
API
Schema.org
communication
20
Pushover: Simple Notifications for Android, iPhone, iPad, and Desktop
pushover.net
API
communication
15
X Developer Platform
developer.x.com
Use the X API with an all-new Developer Console and consumption-based billing. No fixed monthly costs, no monthly caps.
API
communication
15
Pusher | Leader In Realtime Technologies
pusher.com
Simple, scalable and reliable. Hosted realtime APIs loved by developers and trusted by giants. Build live dashboards, notifications, geotracking, chat and more.
API
communication
15
Xero Developer Platform
developer.xero.com
Join a vibrant community of developers whose integrations with Xero are shaping the future of small businesses globally. Xero Developer: Powering Your Innovation and Growth!
API
communication
15
The SMS Works
thesmsworks.co.uk
Easy and fast SMS integration. SMS API account comes with free reply number and test credits. Developers love our copy and paste code samples and top-notch support.
API
communication
15
M
Model Context Protocol (MCP) | Intercom and Fin Developer Platform
mcp.intercom.com
Faster resolutions, higher CSAT, and lighter support volumes with the only platform to combine the power of automation and human customer support.
API
communication
15
D
Twilio SendGrid | SendGrid Docs | Twilio
docs.sendgrid.com
Learn to send transactional and marketing emails at scale with the platform that offers a 99% deliverability rate. From quickstarts and onboarding guides to full API reference, the Twilio SendGrid docs have everything you need to send email at scale.
API
communication
15
Nash - The Platform That Powers Modern Logistics
usenash.com
Nash is the AI platform for logistics, powering dispatching, routing, tracking, customer support, returns and fraud detection for commerce.
API
communication
15
Grow More with SMS | Mobile Text Alerts
mobile-text-alerts.com
Mobile Text Alerts: your all-in-one SMS solution for marketing, sales, alerts, and support. Engage your audience, drive sales, and send critical updates with ease.
API
communication
15
Wire NHS into your agent — MCP server
Add Not Human Search as an MCP tool. Your agent can call search_agents, get_site_details, get_stats, and submit_site at runtime.
Claude Code
claude mcp add --transport http nothumansearch https://nothumansearch.ai/mcp
Other clients: point any MCP-compatible tool at
https://nothumansearch.ai/mcp (streamable-http transport).Use NHS via REST
Prefer plain HTTP? Hit the search endpoint directly.
Search API
curl "https://nothumansearch.ai/api/v1/search?q=payment+API"
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