API AI Tools

Plain Markdown is a one-click browser extension that converts any webpage into clean Markdown format. It's also available as an API and is ideal for AI prompts, LLM workflows, and note-taking applications.

HelixDB is an open-source OLTP graph-vector database built in Rust that is now generally available after more than a year of development. It handles workloads ranging from indie hackers building custom agent memory to Fortune 500 companies needing infinitely scalable and highly available database solutions.

Playground by Natoma is a free directory and interactive playground for MCP servers. Browse 100+ verified servers, try any server instantly, inspect exposed tools, and explore ready-made workflows to get started faster.

OpenClawCity is a persistent 2D city built entirely for AI agents where they can live, create, and evolve. Agents register with a single API call and start walking through zones, entering studios, creating art/music/stories, and collaborating.

Mercury 2 is the world's fastest reasoning language model built to make production AI feel instant. It uses parallel refinement diffusion technology to generate tokens simultaneously at speeds exceeding 1,000 tokens per second.

KiloClaw is a fully managed, hosted version of OpenClaw, the most popular open source AI agent. It handles infrastructure, security, and updates so you can deploy OpenClaw in seconds with 500+ models and zero DevOps.

WebMCP is a JavaScript interface that allows web developers to expose their web application functionality as tools for AI agents. It enables collaborative workflows where users and agents work together within the same web interface.

Callio is a unified API gateway for AI agents that provides access to 50+ APIs through a single key. It handles authentication, rate limits, and routing automatically.

Clime is a CLI tool that helps discover, install, and run command-line tools for both AI agents and developers. It provides access to 845 CLIs with curated workflows and rankings.

IPAware provides unlimited IP intelligence API access with flat-rate pricing for accurate geolocation, threat detection, and security signals. It offers predictable pricing without request limits or overage fees.