CircleCI's CLI is now a Go rewrite with an MCP server bolted on

Short summary

CircleCI rebuilt its CLI from scratch in Go, shipping as a 1.0 beta with a first-party MCP server that integrates directly with Claude, Cursor, and VS Code. Every data-returning command emits JSON with a built-in --jq flag, stable exit codes, and a debugging TUI. The design targets coding agents that need predictable, parseable CI output rather than ANSI-laden text they must guess around.

• •CircleCI CLI rewritten in Go as 1.0 beta with first-party MCP server for Claude, Cursor, and VS Code
• •All commands emit JSON with built-in --jq, stable exit codes, and OAuth keyring-based auth
• •Compared against GitHub CLI (gh) as the incumbent agent-friendly CI tool

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