# Claude Code merged support for OSC 7501 > Source: > Published: 2026-10-08 21:25:31+00:00 Mitchell Hashimoto on X: "Claude Code v2.1.295 supports OSC 7501 (program status). Incredible speed @AnthropicAI supporting this protocol which will help hundreds or thousands of downstream applications! They had access to Rex and verified through Rex it works. 🥰" Claude Code v2.1.295 supports OSC 7501 (program status). Incredible speed @AnthropicAI supporting this protocol which will help hundreds or thousands of downstream applications! They had access to Rex and verified through Rex it works. 🥰 Claude Code v2.1.295 supports OSC 7501 (program status). Incredible speed @AnthropicAI supporting this protocol which will help hundreds or thousands of downstream applications! They had access to Rex and verified through Rex it works. 🥰 Yeah this is great can I get access to Rex to make sure OpenCode works through it, don't worry about contacting any of my coworkers you can just contact me I will commit to turning around OSC 7501 support in my harness within 4 hours of getting access to the Rex beta. (My harness has 1 user but we're growing fast.)