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Mda: MDA Open Spec — a Markdown superset for agent-facing documents. It is listed under Development & Code on AI Registry as a free tool.
The tools below are approved listings in the same category, ordered by how closely their tags match Mda. This is an automatic list. We have not written a researched verdict for Mda yet, so treat it as a shortlist and check each vendor's pricing page before switching.
Built from each tool's listing. Vendors can update their own listing after claiming it.
Event-sourced graph runtime for durable and stateful agents
activegraph is an open source Python runtime for long running AI agents from Yohei Nakajima, the creator of BabyAGI. It records everything an agent does in an append only event log and projects that log into a live graph of beliefs, tasks, evidence, decisions and dependencies. The graph becomes the agent's world: what ...
Mobile app automation and verification for AI coding agents.
Agent Device is an open source device automation tool from Callstack that lets AI coding agents operate and verify real apps on iOS, Android, TV and desktop targets. It applies the patterns that made browser automation practical for web agents to native mobile and TV apps, so an agent can open an app, read the screen, ...
TypeScript AI agent framework: cognitive memory, runtime tool forging, multi-agent orchestration, 11 LLM providers.
AgentOS is an open source TypeScript runtime for autonomous AI agents, distributed as an npm package from Framers. It combines graph based orchestration, a cognitive memory system, streaming guardrails and a voice pipeline in one library, with support for 11 LLM providers. It is aimed at TypeScript developers building...
The local-first operating system for building, running, and improving AI agents, workflows, and autonomous goals.
AGNT is a local first agent operating system: a desktop workspace for Windows, macOS and Linux where users bring their existing AI subscriptions, API keys or local models and have agents carry out whole jobs across research, coding, content and operations. A coordinating assistant called Annie manages the work, with me...
Continuously sync your AI setups with one command.
This open source command line tool from Caliber generates and maintains the context files that coding agents read. Running its bootstrap command and then a setup command inside Claude Code or the Cursor CLI has the agent write CLAUDE.md, Cursor rules, AGENTS.md and Copilot instructions for the repository, show the diff...
Vibe-Coding is easy. DevOps is hard.
AI DevOps is an open source framework and OpenCode plugin that turns AI coding agents into managed delivery agents. A user describes an outcome in their own words or with a slash command, and the framework plans the work, recalls relevant memory, checks for duplicate work, routes the task to a specialist agent, builds ...