[BUG] /schedule skill doesn't surface custom MCP connectors for routine attachment

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?

▎ The /schedule skill in Claude Code consistently reports "No connected MCP connectors found" even when custom connectors are connected and
▎ active on claude.ai's connectors directory.
▎
▎ Reproduction:
▎ 1. On claude.ai, add a custom connector (e.g., Vercel via https://mcp.vercel.com) and complete the OAuth flow.
▎ 2. Verify it appears under Settings → Connectors with status "Connected" and tools listed.
▎ 3. In Claude Code (CLI), invoke /schedule to create a routine.
▎ 4. The skill's "Available MCP Connectors" section lists none.
▎
▎ Expected: Custom connectors connected to the same Claude account should be available to attach to a routine via mcp_connections in the
▎ routine config.
▎
▎ Actual: Skill reports no connectors. There's no connector_uuid exposed to the user, so the routine config can't reference it. This blocks
▎ any routine that needs to use a custom connector (e.g., a scheduled "check Vercel deployment health" agent).
▎
▎ Environment:
▎ - Claude Code CLI (latest)
▎ - macOS
▎ - Tested with Vercel MCP custom connector (https://mcp.vercel.com)
▎ - Account confirmed via screenshot showing connector is active in Claude app
▎
▎ Workaround: None. Forced to schedule routines without the connector and lose the read-access the connector would have provided.

What Should Happen?

Workaround: None. Forced to schedule routines without the connector and lose the read-access the connector would have provided.

Error Messages/Logs

Steps to Reproduce

Reproduction:
▎ 1. On claude.ai, add a custom connector (e.g., Vercel via https://mcp.vercel.com) and complete the OAuth flow.
▎ 2. Verify it appears under Settings → Connectors with status "Connected" and tools listed.
▎ 3. In Claude Code (CLI), invoke /schedule to create a routine.
▎ 4. The skill's "Available MCP Connectors" section lists none.

Claude Model

None

Is this a regression?

I don't know

Last Working Version

_No response_

Claude Code Version

2.1.121

Platform

Anthropic API

Operating System

macOS

Terminal/Shell

Terminal.app (macOS)

Additional Information

_No response_