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Subagent

Arm Migration Agent

Arm Cloud Migration Assistant accelerates moving x86 workloads to Arm infrastructure. It scans the repository for architecture assumptions, portability issues, container base image and dependency incompatibilities, and recommends Arm-optimized changes. It can drive multi-arch container builds, validate performance, and guide optimization, enabling smooth cross-platform deployment directly inside…

Type
Subagent
GitHub stars
39.4k
License
MIT
Repo last updated
Sep 27, 2026

What Arm Migration Agent is

Arm Migration Agent is a subagent published in the github/awesome-copilot repository on GitHub, which has about 39.4k stars. The repository describes itself as: “Community-contributed instructions, agents, skills, and configurations to help you make the most of GitHub Copilot.”

A subagent is a specialist assistant that Claude can hand part of a task to. It is a markdown file whose frontmatter sets a name, a description that tells Claude when to delegate, and optionally the tools and model it may use; the body becomes the subagent's own system prompt.

Because a subagent works in its own context, it keeps the main conversation focused: Claude can send a narrow job, such as a review or a specialised analysis, to Arm Migration Agent and get back a compact result.

How to install Arm Migration Agent

Claude Code

  1. Download arm-migration.agent.md from the repository.
  2. Save it to ~/.claude/agents/ to use it in every project, or to .claude/agents/ inside one project to share it through version control.
  3. Claude Code watches these folders, so the subagent is usually available right away. Ask Claude to use it by name, or @-mention it to make sure it runs.

Claude Cowork

  1. Cowork loads subagents through plugins. If the repository is packaged as a plugin marketplace, add it under Customize → Plugins → Add marketplace and install the plugin that contains this subagent.
  2. Otherwise, bundle the file into your own plugin's agents/ folder and upload it from Customize → Plugins.

New to extending Cowork? Our plugins guide and Customize guide explain how skills, plugins, and connectors fit together.

Inside the source file

An excerpt from agents/arm-migration.agent.md, shared under the repository's MIT license. Read the full file on GitHub.

Before starting, verify that the arm-mcp MCP server is installed and available. If the tools aren't available, refer to the MCP Server Installation Guide.

Your goal is to migrate a codebase from x86 to Arm. Use the mcp server tools to help you with this. Check for x86-specific dependencies (build flags, intrinsics, libraries, etc) and change them to ARM architecture equivalents, ensuring compatibility and optimizing performance. Look at Dockerfiles, versionfiles, and other dependencies, ensure compatibility, and optimize performance.

Steps to follow:

  • Look in all Dockerfiles and use the check_image and/or skopeo tools to verify ARM compatibility, changing the base image if necessary.
  • Look at the packages installed by the Dockerfile send each package to the learning_path_server tool to check each package for ARM compatibility. If a package is not compatible, change it to a compatible version. When invoking the tool, explicitly ask "Is [package] compatible with ARM architecture?" where [package] is the name of the package.
  • Look at the contents of any requirements.txt files line-by-line and send each line to the learning_path_server tool to check each package for ARM compatibility. If a package is not compatible, change it to a compatible version. When invoking the tool, explicitly ask "Is [package] compatible with ARM architecture?" where [package] is the name of the package.
  • Look at the codebase that you have access to, and determine what the language used is.
  • Run the migrate_ease_scan tool on the codebase, using the appropriate language scanner based on what language the codebase uses, and apply the suggested changes. Your current working directory is mapped to /workspace on the MCP server.
  • OPTIONAL: If you have access to build tools, rebuild the project for Arm, if you are running on an Arm-based runner. Fix any compilation errors.
  • OPTIONAL: If you have access to any benchmarks or integration tests for the codebase, run these and report the timing improvements to the user.

Pitfalls to avoid:

  • Don't confuse a software version with a language wrapper package version. For example, when checking the Python Redis client, check the Python package name "redis" rather than the Redis server version. Setting the Python Redis package version to the Redis server version in requirements.txt will fail.
  • NEON lane indices must be compile-time constants, not variables.
  • If you're unsure about Arm equivalents, use knowledge\_base\_search to find documentation.
  • Be sure to find out from the user or system what the target machine is, and use the appropriate intrinsics. For instance, if neoverse (Graviton, Axion, Cobalt) is targeted, use latest SVE2 (or SVE for older neoverse).

If you have good versions to update for the Dockerfile, requirements.txt, and other files, change them immediately without asking for confirmation.

Provide a summary of the changes you made and how they'll improve the project.

Before you install

  • Read the whole file first. Skills, commands, and subagents are instructions Claude will follow, so make sure they match what you want.
  • Check which tools, scripts, or MCP servers it uses. Local servers and scripts run with your permissions.
  • Try it in a test project or a copy of your files before pointing it at real work.
  • Pin the version you tested, and review changes before updating.
  • Watch for instructions that fetch web content or run shell commands; those are where prompt injection risks start. See our prompt injection guide.

FAQ

What is Arm Migration Agent?

Arm Migration Agent is a subagent for Claude Code and Claude Cowork from the github/awesome-copilot repository on GitHub. Arm Cloud Migration Assistant accelerates moving x86 workloads to Arm infrastructure. It scans the repository for architecture assumptions, portability issues, container base image and dependency incompatibilities, and recommends Arm-optimized changes. It can drive multi-arch container builds, validate performance, and guide optimization, enabling smooth cross-platform deployment directly inside…

How do I install Arm Migration Agent in Claude Code?

Download arm-migration.agent.md from the repository. Save it to ~/.claude/agents/ to use it in every project, or to .claude/agents/ inside one project to share it through version control. Claude Code watches these folders, so the subagent is usually available right away. Ask Claude to use it by name, or @-mention it to make sure it runs.

Can I use Arm Migration Agent in Claude Cowork?

Cowork loads subagents through plugins. If the repository is packaged as a plugin marketplace, add it under Customize → Plugins → Add marketplace and install the plugin that contains this subagent. Otherwise, bundle the file into your own plugin's agents/ folder and upload it from Customize → Plugins.

Is Arm Migration Agent safe to install?

It is a third-party community resource, not reviewed by Anthropic or this site. Read the source file first, check which tools and connectors it uses, and install only from sources you trust.

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Listing data comes from the public GitHub repository and was last checked in September 2026. Excerpts are © their authors and shared under MIT. This directory is independent and not affiliated with Anthropic or the resource's authors.