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Communication API Directory

Communication APIs with agent-ready surfaces — email, SMS, chat, voice.

5686
Sites Indexed
39
Avg Score
175 entries in this directory
MailVeri - Free Bulk Email Verifier & List Cleaning Service
mailveri.com
Verify your mailing lists before sending. 99% deliverability rate, fast turnaround, competitive pricing. Verify up to 1,000,000 emails per list.
llms.txt API AI bots Schema.org communication
50
+25 llms.txt +15 structured API missing +20 ai-plugin
Plain — The AI Support Stack Built for B2B
plain.com
Plain is the AI support stack built for B2B teams. Composable infrastructure that gives you complete flexibility to build a support motion that grows with your business — no-code or all-code.
llms.txt API AI bots Schema.org communication
50
+25 llms.txt +15 structured API missing +20 ai-plugin
Toplu SMS Göndermeye Bugün Başlayın - iletiMerkezi
iletimerkezi.com
llms.txt API AI bots Schema.org communication
50
+25 llms.txt +15 structured API missing +20 ai-plugin
MemPalace Cloud — The Digital Memory Palace for AI Tools
mempalace.cloud
MemPalace Cloud is a digital memory palace for AI tools. Claude Code, ChatGPT, Cursor, and more get persistent memory across sessions. Install in two minutes. EU-hosted, open-source engine.
llms.txt API AI bots Schema.org communication
50
+25 llms.txt +15 structured API missing +20 ai-plugin
Gigora — Find Concerts & Tours Anywhere in the World
gigora.live
Find concerts anywhere in the world — search by city, artist or vibe across every stage. Track tours, get show alerts, and browse upcoming concerts on Gigora.
llms.txt API AI bots Schema.org communication
50
+25 llms.txt +15 structured API missing +20 ai-plugin
Macuse — AI Superpowers for Every Mac App
macuse.app
Give your AI direct control of Calendar, Mail, Notes, Reminders, and any Mac app via MCP. Includes Computer Use, on-device. Works with Claude, Cursor, and Raycast.
llms.txt API AI bots Schema.org communication
50
+25 llms.txt +15 structured API missing +20 ai-plugin
AI Intelligence Layer for Business Data | CorpusIQ
corpusiq.io
AI intelligence layer for business data. Ask questions in ChatGPT, Claude, or Perplexity, get source-cited answers from 40+ systems. Zero data stored.
llms.txt API AI bots Schema.org communication
50
+25 llms.txt +15 structured API missing +20 ai-plugin
Cosmik — Live Satellite Tracker & Rocket Launch Alerts
gocosmik.com
Track the ISS, Starlink and 20,000+ satellites live in 3D, follow every rocket launch, and get free alerts when to look up. No login.
llms.txt API AI bots Schema.org communication
50
+25 llms.txt +15 structured API missing +20 ai-plugin
Loops | Email Marketing Software for SaaS Teams
loops.so
Loops is email marketing software for SaaS teams to send marketing, lifecycle, and transactional email from one product. Free to start.
llms.txt API AI bots Schema.org communication
50
+25 llms.txt +15 structured API missing +20 ai-plugin
Postmark: Fast, Reliable Email Delivery Service | SMTP | API
postmark.com
Send transactional and marketing emails and get them to the inbox on time, every time. Postmark is a fast and reliable email delivery service for developers.
llms.txt API AI bots Schema.org communication
50
+25 llms.txt +15 structured API missing +20 ai-plugin
Zynt | Buying Signal Monitoring for B2B Sales Teams
getzynt.com
Zynt monitors public sources for buying triggers in your target accounts. Alerts with context and recommended next steps. Done-for-you setup, live in days. From $800/mo.
llms.txt API AI bots Schema.org communication
50
+25 llms.txt +15 structured API missing +20 ai-plugin
NotFair MCP — AI Ads Agent for Google Ads, Meta Ads & More
adsagent.org
Connect Claude or ChatGPT to Google Ads, Meta Ads, Search Console, and Analytics with NotFair MCP. Diagnose issues, draft fixes, and approve every write.
llms.txt API AI bots Schema.org communication
50
+25 llms.txt +15 structured API missing +20 ai-plugin
Muddy Terrain Games | AI plugins for Unreal Engine. Integrate ChatGPT, Qwen, Meshy, Claude, Gemini, Llama, Mistral, Tripo, DeepSeek, and 30+ LLMs into your game with GenAI for Unreal.
muddyterrain.com
AI plugins for Unreal Engine. Integrate ChatGPT, Qwen, Meshy, Claude, Gemini, Llama, Mistral, Tripo, DeepSeek, and 30+ LLMs into your game with GenAI for Unreal.
llms.txt API AI bots Schema.org communication
50
+25 llms.txt +15 structured API missing +20 ai-plugin
beehiiv — The newsletter platform built for growth
beehiiv.com
Create, grow, and monetize your newsletter with easy-to-use newsletter tools. Build email newsletters and websites without any coding.
llms.txt API AI bots Schema.org communication
50
+25 llms.txt +15 structured API missing +20 ai-plugin
Infraestructura de Email para Agentes IA
uncorreotemporal.com
Buzones de email aislados vía API y servidor MCP. Diseñado para testing CI/CD, flujos de agentes IA y QA automatizado. Autenticado por API key. Gratis para empezar.
llms.txt API AI bots Schema.org communication
50
+25 llms.txt +15 structured API missing +20 ai-plugin
DNS Lookup, Email Deliverability Test & Network Tools - SPF, DKIM, DMARC Checker - mailX
themailx.com
Free email deliverability test, DNS lookup & IP lookup. Check MX records, SPF, DKIM, DMARC, blacklist status, SMTP servers & more. Analyze your domain instantly
llms.txt API MCP communication
50
+25 llms.txt +15 structured API missing +20 ai-plugin
brag.fast | Keep building, we'll market
brag.fast
Turn shipped wins into branded visuals and post copy in seconds. Install the GitHub App, surface merges in your feed, brag when you're ready. Web app, MCP, or API. You approve every post.
llms.txt API AI bots Schema.org communication
50
+25 llms.txt +15 structured API missing +20 ai-plugin
AI Analytics for Shopify: Ask Questions, Get Real Answers | Ask AI
ask-ai-data-connector.co.uk
Your store's AI data analyst. Ask why sales dropped, which products are slipping, and what to fix in plain English, and get real answers from your live Shopify, Klaviyo, GA4 and ad data. Chat right inside Ask AI, or connect your own ChatGPT or Claude.
llms.txt OpenAPI Schema.org communication
50
+25 llms.txt +20 OpenAPI missing +20 ai-plugin
FlowRunner | Run Salesforce Screen Flows in Outlook & Gmail
flow-runner.com
Run your Salesforce Screen Flows inside Outlook and Gmail. Records surface the moment an email opens, with context pre-filled. 14-day free trial.
llms.txt API AI bots Schema.org communication
50
+25 llms.txt +15 structured API missing +20 ai-plugin
Bending Spoons
meetup.com
Find Meetup events, join groups, or start your own. Make new friends and connect with like-minded people. Meet people near you who share your interests.
llms.txt API AI bots Schema.org communication
50
+25 llms.txt +15 structured API missing +20 ai-plugin
Postmark: Fast, Reliable Email Delivery Service | SMTP | API
postmarkapp.com
Send transactional and marketing emails and get them to the inbox on time, every time. Postmark is a fast and reliable email delivery service for developers.
llms.txt API AI bots Schema.org communication
50
+25 llms.txt +15 structured API missing +20 ai-plugin
Alertoscan — Automated Website Forensics & Threat Intelligence
alertoscan.io
Run deep, anti-detection live scans on arbitrary domains. Extract forensic signals, map Neo4j threat correlations, compute a deterministic 14-chain trust score.
llms.txt API AI bots Schema.org communication
50
+25 llms.txt +15 structured API missing +20 ai-plugin
LLMS Central - AI Bot Tracking, Citation Tracking & llms.txt Repository | LLMS Central
llmscentral.com
Track AI bots visiting your site + monitor when ChatGPT, Perplexity & Claude cite your domain. Free AI bot tracker with citation tracking, real-time analytics & llms.txt repository.
llms.txt API AI bots Schema.org communication
50
+25 llms.txt +15 structured API missing +20 ai-plugin
CarScout - Your Car Search, On Autopilot
usecarscout.com
Set your criteria once. We scan thousands of dealers nationwide. Matches find you with daily alerts.
llms.txt API AI bots Schema.org communication
50
+25 llms.txt +15 structured API missing +20 ai-plugin
Trilo — The AI Workspace for Teams | Chat, Tasks, Docs & Calendar
trilo.chat
Trilo is the AI workspace with autonomous coworkers that work 24/7. One app for meetings, tasks, docs, and calendar — no more tool sprawl.
llms.txt API AI bots Schema.org communication
50
+25 llms.txt +15 structured API missing +20 ai-plugin
Duckie - AI Support Agents
duckie.ai
AI support agents that resolve tickets end to end. Duckie handles your customer support autonomously, learning from your knowledge base to deliver instant, accurate responses 24/7.
llms.txt API AI bots Schema.org communication
50
+25 llms.txt +15 structured API missing +20 ai-plugin
AI Marketing Employees That Bring You Customers | Votrix AI
votrixai.com
Votrix AI marketing agents run your marketing for you: they build your website, run your SEO, post to social media and find new customers. Free to start.
llms.txt API Schema.org communication
45
+25 llms.txt +15 structured API missing +20 ai-plugin
Assistly: AI website chat that turns visitors into customers
assistlychat.com
Assistly is an AI chat assistant for your website. It answers visitors' questions from your own business information 24/7 and captures leads for you.
llms.txt API Schema.org communication
45
+25 llms.txt +15 structured API missing +20 ai-plugin
AIData.Broker: find a buyer for your company's data among AI labs
aidata.broker
We find buyers for the data a company makes as it works: tickets, email, chat, code, documents. Value it free against what AI labs pay, then we take it to every buyer that fits at once. Paid from the sale, or not at all.
llms.txt AI bots Schema.org MCP communication
45
+25 llms.txt +10 MCP missing +20 ai-plugin
Dexio: one wiki for all your agents
dexio.wiki
One wiki for all your agents. Claude, ChatGPT, Claude Code, Codex, Cursor, Hermes and OpenClaw read and write it through MCP; Dexio draws the link graph and finds broken links. Free for one person.
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"
Agent Docs
llms.txt OpenAPI spec ai-plugin.json

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