Add support for MCP `notifications/prompts/list_changed` notifications

[Helmi]

Description

Claude Code currently doesn't respond to notifications/prompts/list_changed notifications sent by MCP servers. This prevents dynamic prompt updates from appearing in the UI without restarting Claude Code.

Current Behavior

When an MCP server:

1. Advertises prompts.listChanged: true capability
2. Detects changes to prompt files
3. Sends notifications/prompts/list_changed notification

Claude Code does not:

• Refresh the prompt list
• Update prompt descriptions
• Show newly added prompts
• Remove deleted prompts

Expected Behavior

When receiving a notifications/prompts/list_changed notification, Claude Code should:

1. Re-fetch the prompt list from the server
2. Update the UI to reflect changes
3. Show new prompts without requiring a restart

Technical Details

MCP servers can advertise support for dynamic prompt updates:

const server = new Server(
  { name: 'my-server', version: '1.0.0' },
  {
    capabilities: {
      prompts: {
        listChanged: true,  // Indicates support for notifications
      },
    },
  },
);

// When prompts change, server sends:
await server.notification({
  method: 'notifications/prompts/list_changed',
  params: {},
});

Use Case

This feature enables:

• Hot-reloading of prompt templates during development
• Dynamic prompt loading based on context
• Better developer experience when creating/modifying prompts
• Plugin systems where prompts can be added at runtime

Additional Context

• The MCP specification includes this capability
• Other MCP clients (e.g., GitHub Copilot) support these notifications
• Similar notifications exist for tools (notifications/tools/list_changed) and resources

Related

• MCP Specification - Prompts
• Similar feature exists for resources and tools in the spec

[AchintyaAshok]

Agreed this is a big gap in dynamic registration. Adding support to this request. Relatedly, it also doesn't seem to respond to notifications/tools/list_changed notifications either and similarly I would expect claude to refresh the tool list and when I navigate to /mcp I would expect to see the tools changed.

Related issue: #4118

[github-actions]

Found 2 possible duplicate issues:

1. Claude Code doesn't respond to MCP notifications/prompts/list_changed for dynamic command updates #2722
2. Capture MCP Tools Changed notifications - notifications/prompts/list_changed notifications #4118

This issue will be automatically closed as a duplicate in 3 days.

• If your issue is a duplicate, please close it and 👍 the existing issue instead
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🤖 Generated with Claude Code

[github-actions]

This issue has been automatically closed as a duplicate of #2722.

If this is incorrect, please re-open this issue or create a new one.

🤖 Generated with Claude Code

[grippstick]

2722 and 4094 reference each other as the reasons why each is closed as a duplicate.

I'm either reading this wrong and I apologize; or the bot made a mistake.

[github-actions]

This issue has been automatically locked since it was closed and has not had any activity for 7 days. If you're experiencing a similar issue, please file a new issue and reference this one if it's relevant.