Arco

MIT-licensed Codex plugin (local MCP server plus panel UI) for browsing and editing GitHub and Linear issues and pulling issue context into your conversation.

Open Source Coding & Development
Visit Website ↗ by Arco

What is Arco?

Arco is a Codex plugin that keeps issues beside the conversation: read and compare GitHub and Linear issue cards inline, open full details in a side panel, and attach issue context to your message.

It runs as a local MCP server, so issue work stays on your machine, and it is MIT licensed.

Key features

  • Issue cards inline in the conversation, with full details in a side panel
  • Edit an issue's Markdown body, labels, and Linear workflow state and priority
  • Grouped context attachments from several issues at once
  • Local MCP server — no cloud service in the loop
  • MIT licensed, with a prebuilt package installable from its marketplace

Pros

  • Issues beside the chat, with no tab-switching to the tracker
  • Local-first through MCP, so issue data stays on your machine
  • MIT licensed and open source

Cons

  • Requires a Codex desktop environment plus the codex CLI (and the gh CLI for GitHub) — not a standalone tool
  • Prebuilt package targets macOS on Apple Silicon only

Arco at a glance

PricingOpen Source
CategoryCoding & Development
Platformsmac
CompanyArco
Best forCodex users who triage GitHub and Linear issues without leaving the conversation
Official websitegithub.com
codex plugingithub issueslinearmcpissue tracking

How to choose the right Coding & Development tool

The right coding tool depends on where you write code and how much of your codebase it can understand. IDE integration is the first filter — a tool that lives in your editor, sees your project files and respects your stack will help far more than a general chatbot you paste snippets into. Look for accurate completions, clear explanations of suggested changes, and strong refactoring and debugging support for your main languages. Privacy deserves real attention: check whether your code is used for training, and whether a self-hosted or enterprise option exists for sensitive projects. Price against the hours it actually saves — most developers feel the difference within the first week of real use.

Compare all Coding & Development tools →

Arco FAQs

What is Arco?

Arco is a Codex plugin that keeps issues beside the conversation: read and compare GitHub and Linear issue cards inline, open full details in a side panel, and attach issue context to your message.

What are the main features of Arco?

Arco offers Issue cards inline in the conversation, with full details in a side panel, Edit an issue's Markdown body, labels, and Linear workflow state and priority, Grouped context attachments from several issues at once, Local MCP server — no cloud service in the loop and MIT licensed, with a prebuilt package installable from its marketplace.

How much does Arco cost?

Arco is open source, so the software itself is free to download, use and self-host. Your only costs are the infrastructure you run it on and any paid services you connect to it.

What are the pros and cons of Arco?

Strengths of Arco include Issues beside the chat, with no tab-switching to the tracker; Local-first through MCP, so issue data stays on your machine; MIT licensed and open source. On the downside, Requires a Codex desktop environment plus the codex CLI (and the gh CLI for GitHub) — not a standalone tool; Prebuilt package targets macOS on Apple Silicon only.