Mastra is a framework for building AI-powered applications and agents with a modern TypeScript stack.

The **Model Context Protocol (MCP) client** for the [AI SDK](https://ai-sdk.dev/docs) lets you connect to MCP servers and use their tools with AI SDK functions like `generateText` and `streamText`.

Unified LLM API with automatic model discovery and provider configuration

CLI tool to block --no-verify flag in git commands. Prevents AI agents from bypassing git hooks.

Detect agentic coding environments and AI assistant tools

Sanity-flavored HTML to Portable Text conversion (wraps @portabletext/html)

Tool for transforming styles with JS plugins

Code Mode: use LLMs to generate executable code that performs tool calls

Arcjet runtime security SDK for Next.js — bot protection, rate limiting, prompt injection detection, PII blocking, and WAF

Tool-result spill policy for the DeepSeek Harness — replaces oversized plain-text tool results with a retained preview plus a spill-file path (no service surface)

A tiny (118 bytes), secure URL-friendly unique string ID generator

Model-facing background job control tools (job_output, job_list, job_kill) over the ctx.jobs registry

Generic bash tool for AI agents, compatible with AI SDK

AI SDK tools for Parallel Web

Editor.js — open source block-style WYSIWYG editor with JSON output

Detect if code is running in an AI agent or automated development environment

Compile ES2015 block scoping (const and let) to ES5

Framework-neutral LLM tool layer over folio's ai-edits engine: function-calling tools so an agent can read and mutate .docx documents through @stll/folio-core.

Babel plugin to ensure function declarations at the block level are block scoped

CLI companion for the SpeQ architectural specification format