[BUG] Project agents not available on Claude Code Web

Preflight Checklist

• [x] I have searched existing issues and this hasn't been reported yet
• [x] This is a single bug report (please file separate reports for different bugs)
• [x] I am using the latest version of Claude Code

What's Wrong?

Project agents (configured under .claude/agents) are not available to the Task tool, and as a result they are ignored during cloud sessions. Local sessions do not have this problem.

When asked Claude, it replies

The Task tool only supports these system-defined subagent_type values:

general-purpose
Explore
Plan
claude-code-guide
statusline-setup

What Should Happen?

Agents defined under .claude/agent directory should be available to Claude during cloud sessions.

Error Messages/Logs

Steps to Reproduce

• project with .claude/agents
• start a session on Claude Code Web
• tends to default to general-purpose agent for most tasks (can utilize Plan and Explore agents for subtasks)
• never picks projects agents (unlike in local sessions)

Claude Model

None

Is this a regression?

No, this never worked

Last Working Version

_No response_

Claude Code Version

2.0.67 (my local version)

Platform

Anthropic API

Operating System

macOS

Terminal/Shell

Terminal.app (macOS)

Additional Information

_No response_