[FEATURE] A configuration is required to block access to specific mcp on the subagent.

Preflight Checklist

• [x] I have searched existing requests and this feature hasn't been requested yet
• [x] This is a single feature request (not multiple features)

Problem Statement

When mcp is loaded, token usage increases by default, currently you can load all mcps by default or select only specific mcps, but it would be nice to add a setting to block access.

1. Allow all MCP tools (default)

---
name: github-expert
description: GitHub Task Expert

Omit the tools field → All MCP tools + default tools are available

---

1. Allow only specific MCP tools

---
name: github-expert
description: GitHub Task Expert
tools: Read, Write, mcp__github__search_repositories, mcp__github__get_repo
---

Proposed Solution

Disallow use of specific MCP tools

---
name: github-expert
description: GitHub expert
tools: Read
tools-deny: Write
---

Alternative Solutions

_No response_

Priority

Medium - Would be very helpful

Feature Category

Configuration and settings

Use Case Example

_No response_

Additional Context

_No response_