Communication API Directory
Communication APIs with agent-ready surfaces — email, SMS, chat, voice.
4313
Sites Indexed
37
Avg Score
123 entries in this directory
Intercom | The only helpdesk designed for the AI Agent era
intercom.com
The only helpdesk with a natively integrated AI Agent. Deliver perfect customer experiences with the highest-performing platform. Start your free trial today.
llms.txt
API
Schema.org
communication
45
+25 llms.txt
+15 structured API
missing +20 ai-plugin
Email & SMS Marketing Platform | Mailchimp
mailchimp.com
Utilize real-time user behavior data and artificial intelligence to convert more customers. Easy to use, get started for free!
llms.txt
API
Schema.org
communication
45
+25 llms.txt
+15 structured API
missing +20 ai-plugin
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.
llms.txt
API
Schema.org
communication
45
+25 llms.txt
+15 structured API
missing +20 ai-plugin
Conversational AI and APIs for SMS, Email, Voice | Twilio
twilio.com
Build amazing customer experiences on the Twilio platform with APIs for SMS, RCS, voice, and email, plus conversational AI for smarter engagement, and identity verification for trust.
llms.txt
API
Schema.org
communication
45
+25 llms.txt
+15 structured API
missing +20 ai-plugin
LiveDune – All-in-One Social Media Analytics & Management Platform
livedune.com
Join over 10,000 daily users leveraging LiveDune to monitor, analyze, and optimize social media accounts across multiple platforms. Schedule posts, track KPIs, detect influencer fraud, and generate detailed reports effortlessly
llms.txt
API
Schema.org
communication
45
+25 llms.txt
+15 structured API
missing +20 ai-plugin
Promptmonitor - Best AI Visibility Optimization / GEO Tool
promptmonitor.io
Promptmonitor helps you track and optimize your company's visibility across ChatGPT, Perplexity, and other AI/LLMs. Get mentioned in AI with Promptmonitor.
llms.txt
API
Schema.org
communication
45
+25 llms.txt
+15 structured API
missing +20 ai-plugin
AI Email Marketing Software - Automate & Optimize Campaigns
mailmodo.com
Try this AI email marketing tool to create emails, automate journeys, and add interactivity to drive better conversions.
llms.txt
API
Schema.org
communication
45
+25 llms.txt
+15 structured API
missing +20 ai-plugin
Next-Gen AI Customer Service Software for Smarter Support | BoldDesk
bolddesk.com
Boost your support with BoldDesk AI customer service software. Get an enterprise-grade help desk, live chat & knowledge base all at an unbeatable price.
llms.txt
API
Schema.org
communication
45
+25 llms.txt
+15 structured API
missing +20 ai-plugin
Beekeeper Is Now Part of LumApps | Frontline Platform
beekeeper.io
Beekeeper's mobile-first frontline experience is now part of the LumApps AI Employee Hub. Same tools, same login, bigger possibilities for your workforce.
llms.txt
API
Schema.org
communication
45
+25 llms.txt
+15 structured API
missing +20 ai-plugin
ably.io
ably.io
Ably is the realtime platform built for scale and reliability. Power live chat, messaging, collaborative apps, and AI experiences that never drop.
llms.txt
API
Schema.org
communication
45
+25 llms.txt
+15 structured API
missing +20 ai-plugin
Reckon App | Verify Emails - Improve Deliverability
reckonapp.io
Reckon offers simple, reliable email verification API to reduce bounces and improve deliverability. Easy integration with various workflows. Try it today.
llms.txt
API
Schema.org
communication
45
+25 llms.txt
+15 structured API
missing +20 ai-plugin
Your agents forget. Neotoma makes them remember.
neotoma.io
Stop being the human sync layer. Deterministic, versioned state for multi-agent builders and operators running Claude, Cursor, ChatGPT, and MCP-connected tools. Replay changes, trace provenance, and prove your agents aren’t operating on bad state.
llms.txt
API
Schema.org
communication
45
+25 llms.txt
+15 structured API
missing +20 ai-plugin
Buttondown — Newsletter software for people like you
buttondown.email
Buttondown is the last email platform you'll migrate to. We're focused on your success, not on bleeding you dry.
llms.txt
API
Schema.org
communication
45
+25 llms.txt
+15 structured API
missing +20 ai-plugin
Fancy Text Decorator - ℭ𝔬𝔬𝔩 𝕋𝕖𝕩𝕥 𝓖𝓮𝓷𝓮𝓻𝓪𝓽𝓸𝓻 😜
fancytextdecorator.com
Generate cute, beatiful and cool text what can be used on Instagram, Twitter, Youtube, Discord and all social media accounts! Generate (っ◔◡◔)っ ♥ ℭ𝔬𝔬𝔩 ♥ & ⓢⓣⓨⓛⓘⓢⓗ text fonts with symbols ✅
llms.txt
API
Schema.org
communication
45
+25 llms.txt
+15 structured API
missing +20 ai-plugin
The Free Social Media Aggregator - Curator
curator.io
Curator is a free social media aggregator that helps you collect and display content. Set up your feed in under 5 minutes.
llms.txt
API
Schema.org
communication
45
+25 llms.txt
+15 structured API
missing +20 ai-plugin
Text Analytics & Sentiment Analysis API
text2data.com
Analyze in-house or social media unstructured content with our cloud-based text analytics API. Generate real-time customer satisfaction reports in PowerBI or Tableau.
llms.txt
API
Schema.org
communication
45
+25 llms.txt
+15 structured API
missing +20 ai-plugin
ColdSend
coldsend.pro
The all-in-one cold email platform. Pre-warmed Azure IPs, automated inbox setup, and a built-in sequencer. Start at 100K/mo, scale to 1M+. From $79/mo.
llms.txt
API
Schema.org
communication
45
+25 llms.txt
+15 structured API
missing +20 ai-plugin
ably.com
ably.com
Ably is the realtime platform built for scale and reliability. Power live chat, messaging, collaborative apps, and AI experiences that never drop.
llms.txt
API
Schema.org
communication
45
+25 llms.txt
+15 structured API
missing +20 ai-plugin
V
VictorOps Acquisition | Splunk
victorops.com
VictorOps is now Splunk On-Call — new name, updated product. Learn more about the VictorOps acquisition.
llms.txt
API
Schema.org
communication
45
+25 llms.txt
+15 structured API
missing +20 ai-plugin
ably.net
ably.net
Ably is the realtime platform built for scale and reliability. Power live chat, messaging, collaborative apps, and AI experiences that never drop.
llms.txt
API
Schema.org
communication
45
+25 llms.txt
+15 structured API
missing +20 ai-plugin
D
45
+25 llms.txt
+15 structured API
missing +20 ai-plugin
45
+25 llms.txt
+15 structured API
missing +20 ai-plugin
Schedule Social Media Posts Across All Platforms | PostFast
postfa.st
Save 10+ hours weekly with PostFast. Schedule and automate your social media posts across Facebook, Instagram, Threads, X, LinkedIn, TikTok, YouTube, Telegram & more from one dashboard.
llms.txt
API
Schema.org
communication
45
+25 llms.txt
+15 structured API
missing +20 ai-plugin
Lettermint – Your European partner for transactional emails
lettermint.co
Based in Europe, we ensure your transactional emails are secure, reliable, and always reach your customers. Never worry about email delivery again!
llms.txt
API
Schema.org
communication
45
+25 llms.txt
+15 structured API
missing +20 ai-plugin
Struct | Automate your on-call runbook
edgedive.com
Automatically root cause on-call issues. Struct cross-references logs, metrics, traces, and your codebase to accurately root-cause eng alerts and bugs.
llms.txt
API
AI bots
communication
45
+25 llms.txt
+15 structured API
missing +20 ai-plugin
Chatbase: The Leading AI Customer Service Platform
chatbase.co
Automate customer support with AI customer service agents trusted by over 10,000 businesses. Reduce ticket volume, resolve issues faster, and scale without adding headcount.
llms.txt
API
Schema.org
communication
45
+25 llms.txt
+15 structured API
missing +20 ai-plugin
Repomix | Pack your codebase into AI-friendly formats
repomix.com
Pack local or remote repositories into AI-friendly XML, Markdown, JSON, or plain text for Claude, ChatGPT, Gemini, MCP, and code review workflows.
llms.txt
API
Schema.org
communication
45
+25 llms.txt
+15 structured API
missing +20 ai-plugin
Your video editing API for video automation - JSON2Video
json2video.com
JSON2Video automates video production with templates and variables — for video ads, social media stories and product videos at scale
llms.txt
API
Schema.org
communication
45
+25 llms.txt
+15 structured API
missing +20 ai-plugin
Knowatoa - Show up in the conversation
knowatoa.com
Your buyers are asking AI about your competitors. Knowatoa shows you where the gaps are and exactly what to publish to close them — across ChatGPT, Claude, Perplexity, Gemini, and AI Overviews.
llms.txt
API
Schema.org
communication
45
+25 llms.txt
+15 structured API
missing +20 ai-plugin
Brivvy | How modern teams write to convert.
brivvy.io
Brivvy turns every blog, email, and post into a message that converts. Voice, templates, and audience connected to every AI tool your team uses.
llms.txt
API
Schema.org
communication
45
+25 llms.txt
+15 structured API
missing +20 ai-plugin
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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