Second

Second: AI Developer Bots for Code Migration & Upgrades

Second deploys AI developer bots that automate complex code migrations and full-stack feature generation, delivering finished work as ready-to-review pull requests.

AI Developer Tools Open Source AI Models AI Code Generator AI Agent Large Language Models (LLMs)

Overview Capabilities Features Use Cases Pricing Pros & Cons How to Use FAQs

Overview

Second is an AI-powered developer platform that puts autonomous coding agents to work on the tedious, high-risk tasks engineering teams dread: framework migrations, dependency upgrades, and full-stack feature builds. Rather than relying on generic prompting, Second's agents run on purpose-built modules engineered for specific migration paths, which means they stay laser-focused on the task at hand instead of drifting off course like typical LLM-driven tools. Under the hood, Second taps into a mix of OpenAI, Azure OpenAI, AWS Bedrock, and open-source models, giving it deep familiarity with the newest versions of popular frameworks and libraries. Its agents don't just rewrite code—they handle the full scope of a migration, including resolving dependencies, updating build systems, and refreshing test suites. Once the work is done, Second delivers it the way developers already collaborate: as pull requests on GitHub, Bitbucket, or GitLab, ready for human review and merge. Whether a team needs to move off AngularJS, jump from Create React App to Next.js, or convert a JavaScript codebase to TypeScript, Second is built to handle the heavy lifting so engineers can focus on building new features instead of babysitting legacy code.

Capabilities & Features

A.I. developer tools
Code migration
Code upgrade
Automated code migration
Web application development
Full-stack development
OpenAI
Azure OpenAI
AWS Bedrock
GitHub
Bitbucket
Gitlab

Core Features

Purpose-built migration modules to prevent prompt drift
AI agents trained on the latest framework and library versions
Native integration with GitHub, Bitbucket, and GitLab via pull requests
Automated dependency resolution
Build system configuration updates
Automated test suite updates
Support for running agents on-premise or within your own VPC

Use Cases

Migrating legacy AngularJS applications to React
Converting Create React App (CRA) projects to Next.js
Upgrading existing Next.js applications to the latest version
Converting JavaScript codebases to TypeScript
Migrating CSS stylesheets to SCSS

Best For

Software developers
Web developers
Full-stack developers
Engineering teams
CTOs and engineering leadership

Pros

•Purpose-built modules reduce the risk of AI 'prompt drift' seen in generic coding assistants
•Handles the entire migration lifecycle, not just code rewrites—including tests and build configs
•Fits directly into existing developer workflows via pull requests
•Flexible model backend (OpenAI, Azure, AWS Bedrock, open-source) adds resilience and choice
•Option to run agents on-premise or in a private VPC for security-conscious teams

Cons

•Limited to the specific migration paths covered by existing purpose-built modules
•Requires human review of every pull request, so it's not fully hands-off
•No transparent pricing information publicly available
•Best suited to teams already using GitHub, Bitbucket, or GitLab for version control

How to Use

1. Identify the migration or upgrade you need (e.g., AngularJS to React, JS to TypeScript). 2. Select the corresponding purpose-built module from Second's available offerings. 3. Deploy the Second agent against your repository, connected via GitHub, Bitbucket, or GitLab. 4. The agent analyzes your codebase and performs the migration, including dependency resolution, build system updates, and test updates. 5. Review the automatically generated pull request. 6. Merge the changes once you're satisfied with the results.