Coding Agents

Agents and models that write, review and ship software.

16 posts

Oct 6, 2026Blog

Announcing Agent Controller GA

Build long-running, interactive agents with independent sessions and persistent threads.

Aug 17, 2026Blog

Introducing Coding Agent Helper for Mastra

A preconfigured coding agent with sandbox, task list, error retries, and a goal-judge built-in.

Aug 13, 2026Article

6 Best AI Code Review Tools for Pull Requests in 2026

An AI code review tool examines source changes and reports possible defects, security problems, policy violations or missed requirements. This piece ranks six of them by how well they understand code beyond the diff and how much control a team keeps over the review.

Jul 24, 2026Article

Best LLM for coding: a developer’s guide to top models in 2026

Compare the best LLMs for coding in 2026 across performance, context, cost, privacy, and production fit, with practical model-selection guidance.

Jun 30, 2026Blog

Build Claude Code for X with Agent Controller

Build and control long-running agent experiences with sessions, modes, permissions, subagents.

Jun 22, 2026Blog

Introducing Mastra CLI Actions for Claude Code, Cursor, and Codex

Run, debug, and improve your Mastra agents from the terminal.

Jun 18, 2026Blog

Announcing Agent Controller

Build interactive AI agents with multiple modes, persistent threads, tool approval, and model switching.

Jun 15, 2026Blog

Introducing Claude Code, Cursor, and Codex agents in Mastra

Build your own coding agents using Claude, Cursor, or OpenAI's agent SDKs.

Jun 5, 2026Blog

Anatomy of a harness: building a coding agent that can run for hours

How Mastra Code's harness wraps the agent loop: conversation-as-channel, event-to-display-state translation, human-in-the-loop tools, observational memory, subagents, modes, and an ordered tool-approval chain.

Apr 27, 2026Blog

LSP Inspection for Mastra Workspaces

Give agents semantic understanding of your codebase.

Feb 24, 2026Blog

Announcing Mastra Code: A coding agent that never compacts

An open-source TUI coding agent with observational memory that compresses context without losing it.

Jan 1, 2026Blog

Automating multi-language PR descriptions in GitHub Actions

Build a GitHub Action that uses Mastra to read pull request diffs and generate multi-language PR descriptions.

Jan 1, 2026Blog

Building a code review bot

Build an automated code review bot that uses workspace skills to apply coding standards and provide PR feedback.

Jan 1, 2026Blog

Building a coding agent

Build and run an interactive coding agent with tool approvals, persistent sessions, and a terminal UI.

Jan 1, 2026Blog

Building a dev assistant

Build a development assistant that uses workspace filesystems, sandboxes, skills, and search to write and test code.

Mar 5, 2025Blog

Building a Code Assistant with Large Context Windows

How we used Mastra and Gemini Flash 2.0 to build a natural language interface for code repositories

Ship better agents

Create a new Mastra project. Mastra is a framework for AI applications and agents on a modern TypeScript stack. Before running the command, ask these questions one at a time and wait for each answer unless it was already provided:

Project name? (default: "my-mastra-app")
Provider? (required; options: "openai", "anthropic", "google", "xai")
If the provider isn't supported, ask again and list the supported values.

Run: `npm create mastra@latest <project-name> -- --llm <provider>`

The command creates a default Mastra project, installs Mastra skills for detected coding assistants, and initializes Git when appropriate.

After creation, enter the project directory and start the dev server: `npx bgproc start -n <project-name> -w -- npm run dev`

Open Mastra Studio at `http://localhost:4111`. Studio is the interface for building, testing, and managing agents, workflows, and tools.

Also mention that the Mastra model router provides access to thousands of models: https://mastra.ai/models

Quickstart