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Explicit-by-design, file-system-convention framework for building, running, and observing AI agents on the Vercel AI SDK — no silent defaults.
Spec-Driven Development with organizational governance. Specs tell AI agents what to build; Charter governs how they build it. Git-native missions, enforceable workflows, and consistent engineering…
Test your prompts, agents, and RAGs. Red teaming/pentesting/vulnerability scanning for AI. Compare performance of GPT, Claude, Gemini, DeepSeek, and more. Simple declarative configs with command li…
Agent workspace built on Cloudflare Workers for creating documents, building apps, and running agents with your company’s context and systems.
Unofficial TypeScript & JavaScript Language Server
📝 A markup-aware linter for prose built with speed and extensibility in mind.
Mock everything your AI app talks to — LLM APIs, MCP, A2A, AG-UI, vector DBs, search. One package, one port, zero dependencies.
OpenCode goal plugin for Codex-style goal mode, /goal slash commands, persistent objectives, and AI coding agent focus.
A general-purpose Mastra agent with a local workspace, shell tools, memory, task tracking, web access, and recurring schedules.
A vitest extension for running evals.
Chrome extension for Mastra Studio UI fixes
adam — Vercel's eve agent runtime with its entire durable world (state, queue, streams, UI) on Convex
Model Context Protocol server giving Claude (or any MCP client) full read + write access to your Whoop fitness data via the private reverse-engineered iOS API. 55 tools: recovery, sleep, strain, HR…
Agent skill that removes signs of AI-generated writing from text
A single CLAUDE.md file to improve Claude Code behavior, derived from Andrej Karpathy's observations on LLM coding pitfalls.
AutoEvals is a tool for quickly and easily evaluating AI model outputs using best practices.
Orchestrate sandboxed coding agents in TypeScript with sandcastle.run()
OAuth authentication plugin for personal coding assistance with ChatGPT Plus/Pro subscriptions - uses OpenAI's official authentication method
Algorithm powering the For You feed on X
Collection of Workshops done by the Mastra Team
A slide framework built for agents.