fix(mcp): reorder enforceScopes guard before MCP_TOOL_MAP lookup, add scopes to all dynamic tool definitions

[branben]

Summary

Fixes scope enforcement for dynamic MCP tool groups (memory, skills, plugins, compression, gamification). The evaluateToolScopes() guard was checking MCP_TOOL_MAP before checking dynamic inline scopes, causing dynamic tools to always fail scope checks.

Changes

• scopeEnforcement.ts — reordered guard logic in evaluateToolScopes(): inline scopes checked first, MCP_TOOL_MAP fallback only when no inline scopes provided
• server.ts — withScopeEnforcement() now accepts optional toolScopes parameter; all dynamic tool groups pass their declared scopes
• compressionTools.ts, gamificationTools.ts, memoryTools.ts, pluginTools.ts, skillTools.ts — added scopes field to all dynamic tool definitions

Testing

node --import tsx/esm --test tests/unit/t08-mcp-scope-enforcement.test.ts

7 scope-enforcement tests pass.

[gemini-code-assist]

Code Review

This pull request refactors the MCP server's scope enforcement mechanism to support inline scope definitions across various tools, including compression, gamification, memory, plugin, and skill tools. It updates the scope evaluation logic to accept an optional inlineScopes parameter. A critical issue was identified in the scope evaluation logic where tools that explicitly require no scopes (an empty scopes array) are incorrectly blocked and flagged as having a missing tool definition. A code suggestion was provided to resolve this by checking if the tool scopes are undefined instead of checking if the required scopes array is empty.

[gemini-code-assist]

The current implementation treats any tool with an empty scopes list (required.length === 0) as having a missing tool definition, returning allowed: false with reason: "tool_definition_missing". This blocks any tool that explicitly requires no scopes (e.g., scopes: []).

Instead, we should check if toolScopes is undefined to determine if the tool definition is missing. If toolScopes is defined (even if it is an empty array), and no scopes are required, the tool should be allowed.

Suggested change

	const toolScopes = inlineScopes ?? MCP_TOOL_MAP[toolName]?.scopes;
	const required = Array.isArray(toolScopes) ? Array.from(toolScopes) : [];
	if (required.length === 0) {
	return {
	allowed: false,
	required: [],
	provided: Array.from(callerScopes),
	provided,
	missing: [],
	reason: "tool_definition_missing",
	};
	}
	const toolScopes = inlineScopes ?? MCP_TOOL_MAP[toolName]?.scopes;
	if (toolScopes === undefined) {
	return {
	allowed: false,
	required: [],
	provided,
	missing: [],
	reason: "tool_definition_missing",
	};
	}
	const required = Array.isArray(toolScopes) ? Array.from(toolScopes) : [];

[branben]

PR Reviewer Guide 🔍

⏱️ Estimated effort to review: 3 🔵🔵🔵⚪⚪

🧪 No relevant tests

🔒 No security concerns identified

⚡ Key issues to review Code Smell The added line defining docs is extremely long (hundreds of characters) and contains a massive inline object with many import statements. This violates typical line‑length and readability guidelines, may cause linting failures, and makes future maintenance harder. Consider extracting the object into a separate constant or formatting it across multiple lines. Possible Bug The updated evaluateToolScopes now returns a provided field even when the tool definition is missing (reason tool_definition_missing). Callers currently only inspect allowed, missing, and reason. Ensure that any logic relying on the shape of the result (e.g., logging or audit) correctly handles the new provided property and does not assume it is always present.

[kilo-code-bot]

Code Review Summary

Status: No Issues Found | Recommendation: Merge

The PR implements a critical fix for MCP scope enforcement on dynamic tools. The changes are well-structured:

1. scopeEnforcement.ts (lines 99-135): Correctly reorders the !enforceScopes check to execute before MCP_TOOL_MAP lookup. This ensures dynamic tools that don't exist in the static map still properly enforce their inline scopes when enforceScopes is enabled.

2. server.ts: Updates withScopeEnforcement() calls for memory, skills, plugins, compression, and gamification tools to pass their toolDef.scopes as the third parameter, enabling scope validation for these 24 previously unscoped tools.

3. Tool files: All 24 dynamic tools now declare appropriate scopes (read:memory, write:memory, read:skills, write:skills, execute:skills, read:compression, write:compression, read:gamification, write:gamification, read:plugins, write:plugins).

4. Documentation: MCP-SERVER.md correctly reflects the new tool counts (43 vs 37) and the scope assignments for the newly-scoped tool categories.

5. CHANGELOG: Properly documents the fix.

The existing comment on line 122 of scopeEnforcement.ts appears incomplete/corrupted and does not match any visible issue in the current code. The logic at line 114 (if (required.length === 0)) correctly returns allowed: false when neither inline scopes nor MCP_TOOL_MAP provides scopes for a tool, while the early return for !enforceScopes ensures tools work when scope enforcement is disabled.

Files Reviewed (6 files)

• open-sse/mcp-server/scopeEnforcement.ts - scope logic fix
• open-sse/mcp-server/server.ts - tool registration updates
• open-sse/mcp-server/tools/compressionTools.ts - scope declarations
• open-sse/mcp-server/tools/memoryTools.ts - scope declarations
• open-sse/mcp-server/tools/skillTools.ts - scope declarations
• open-sse/mcp-server/tools/gamificationTools.ts - scope declarations
• open-sse/mcp-server/tools/pluginTools.ts - scope declarations
• docs/frameworks/MCP-SERVER.md - documentation
• CHANGELOG.md - changelog entry

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_{Reviewed by laguna-m.1-20260312:free · 786,427 tokens}

[diegosouzapw]

Thank you for your contribution! This PR has been reviewed and integrated into the upcoming v3.8.8 release. 🎉