CodeDuel

Feel like your coding skills are slipping due to AI tools? Evaluate yourself by competing against AI and then go from there. CodeDuel is built to help Developers keep their coding skills sharp in the AI era by allowing them to compete against AI on various coding problems and see how they fare. Don't feel like competing? CodeDuel offers guided practice along with flashcards and code review to help Developers who need to refresh their problem solving skills, identify the correct appraoch to coding problems and even receive feedback on any code that they've written. Free to start, upgrade for the full experience.

SocialData API

SocialData turns public X (Twitter) data into a plain REST API, without the official API's enterprise tiers. Retrieve tweets, profiles, followers, timelines and search results, plus lists, communities and Spaces. Search supports the full set of Twitter Advanced Search operators. Billing is usage-based at $0.20 per 1,000 tweets or profiles; failed requests cost nothing. It also ships monitoring webhooks, social action verification, and an MCP server for AI assistants.

AllMCPs

AllMCPs is the definitive open directory for discovering and installing Model Context Protocol (MCP) servers. It serves as a central hub, enabling leading AI agents like Claude, Cursor, and Windsurf to connect directly to a vast ecosystem of external resources, including databases, developer tools, local files, and APIs. This platform is designed for developers and AI agents seeking to expand their capabilities by seamlessly integrating with real-world data and services, streamlining complex workflows and enhancing AI functionality. Key Features Browse over 3,161+ verified MCP servers across diverse categories. Direct integration for AI agents with databases, developer tools, local files, and APIs. Comprehensive categorization by technology stack and workflow (e.g., Developer Tools, Finance, Security). Ability to submit and manage your own MCP servers for discovery. Compatibility with popular AI clients including Claude Desktop, Cursor, Windsurf, and Cline. Showcases featured and trending MCP servers for easy discovery. Use Cases AllMCPs empowers AI agents across numerous scenarios. For developers, it facilitates automated documentation and codebase context with tools like Moxie Docs MCP. Financial professionals can leverage AI-native business management for invoices and expenses, or access real-time FX rates via servers like Mcp Server@frihet and Cnb@czagents. Security agents can implement runtime governance for tool calls with Arc Gate Mcp or perform binary analysis using GhidraMCP. Knowledge workers benefit from AI summarization of various content types (Mcp Summarizer) and persistent memory for Claude Code (Claude Engram). Data analysts can connect Claude to Metabase for natural language data analysis (Metabase Mcp). Furthermore, the directory supports specialized functions like job searching and auto-application (Jobgpt Mcp Server), web content extraction (Webclaw0xMassi), and transforming diverse file types into agent-ready data (Unstructured Transform). Pricing Information AllMCPs operates primarily as a free-to-browse directory, allowing users to discover and install MCP servers without direct cost. While specific MCP servers listed may have their own pricing models (e.g., pay-per-call, free tiers), the core service of exploring the directory is accessible to all. User Experience and Support The platform offers a clean, intuitive interface for browsing and discovering MCP servers, categorized for easy navigation. Users can subscribe to a newsletter for updates on new and top submissions. Support resources include a Guides Hub, Blog, and comprehensive API Documentation, ensuring developers have the necessary information to integrate and utilize MCP servers effectively. Technical Details AllMCPs is built around the Model Context Protocol (MCP), a standard designed for AI agent interaction with external systems. Many listed servers leverage JavaScript/Node.js for their implementation, often utilizing command-line tools like npx for easy setup and configuration. The platform provides an API for programmatic access to its catalog, supporting a robust ecosystem for AI-driven automation. Pros and Cons Pros: Extensive and growing directory of verified MCP servers; significantly enhances AI agent capabilities; broad range of categories covering diverse needs; simplifies integration with complex systems; fosters an open ecosystem for AI tools. Cons: Integration complexity can vary per MCP server; reliance on the evolving MCP standard; specific server pricing and support are external to AllMCPs. Conclusion AllMCPs stands as an indispensable resource for anyone looking to unlock the full potential of AI agents. By providing a centralized, searchable directory of MCP servers, it bridges the gap between AI capabilities and real-world applications. Explore AllMCPs today to discover powerful integrations and elevate your AI agent's intelligence and utility.

ChatOtter

ChatOtter is an innovative AI-powered lead agent designed for Small and Medium-sized Enterprises (SMEs) to capture and manage leads across multiple messaging channels 24/7. Configure your intelligent agent once and deploy it instantly to your website, WhatsApp, Zalo, Telegram, LINE, and Messenger, ensuring no lead is ever missed and providing instant, source-cited responses.Targeting SMEs, ChatOtter streamlines customer interactions and lead qualification, freeing up human teams for more complex tasks.Key FeaturesMulti-Channel Deployment: Go live on your website, WhatsApp, Zalo, Telegram, LINE, and Messenger from a single configuration.Source-Cited Accuracy: Answers are grounded in your business's knowledge base, citing sources and preventing AI hallucinations.Mobile-First Experience: Built for how SMEs and their customers communicate, offering a native-feeling chat experience on mobile messaging apps.Quick Setup: Connect your knowledge base and deploy your agent in as little as 30 minutes, without complex prompt engineering.Seamless Integrations: Plug into existing tools like HubSpot, Slack, and Calendly for lead capture, alerts, and booking.Unified Inbox & Analytics: Handle all conversations from one inbox and track performance through a comprehensive dashboard.Use CasesChatOtter is ideal for businesses enhancing customer support and lead generation. It excels in scenarios requiring instant responses for converting inquiries. For example, a real estate agency can deploy ChatOtter to answer property questions, schedule viewings via Calendly, and push lead details to HubSpot, all outside business hours. This ensures immediate attention for potential buyers, significantly increasing conversion rates.SMEs can also reduce repetitive customer inquiries. The AI agent handles FAQs about products, pricing, or services instantly and accurately, allowing human teams to focus on high-value interactions. This leads to happier customers and more efficient operations, with the option to escalate complex issues to a human team member.Pricing InformationChatOtter offers transparent pricing from $49 per month (25% saving annually), including a generous monthly conversation allowance across all channels. No opaque credit buckets or per-seat charges. A free trial is available to connect your knowledge base and test the agent.User Experience and SupportDesigned for ease of use, the platform enables deployment in under 30 minutes. Users configure the agent's tone, escalation rules, and tools through an intuitive interface. All conversations are managed from a single inbox with performance tracking. Contact can be made via contact@chatotter.ai.Technical DetailsChatOtter utilizes AWS US-East infrastructure with 24/7 monitoring. Data is secured with TLS 1.3 in transit and AES-256 at rest, workspace-isolated, and never used to train shared models. The platform is GDPR & CCPA ready, ensuring robust data privacy. Billing is handled securely via Stripe.Pros and ConsPros: 24/7 lead capture & support; instant, source-cited replies; multi-channel deployment; mobile-first design; quick setup; seamless integrations; transparent pricing; strong data security.Cons: Automatic personalized email follow-up is a "Coming H2 2026" feature; specific programming languages are not explicitly mentioned.ConclusionChatOtter provides a powerful, accessible, and secure AI solution for SMEs to revolutionize lead generation and customer support across major messaging platforms. By offering instant, accurate, and personalized interactions, it helps businesses convert more leads and delight customers. Explore ChatOtter today to build and deploy your AI agent in minutes.

DocImprint

DocImprint is MCP-native verifiable document memory for AI agents. One POST /v1/extract turns PDFs and URLs into tamper-evident evidence bundles — SHA-256 manifests, Merkle citations, free offline verify. Pay per call with x402 USDC on Base, or use API keys. Built for legal, finance, and compliance agents that must prove what they read — not just log a chat.