MCP-REPL

Execute JavaScript code directly with Node.js - supports ESM imports and all Node.js features.

DEBUGGING GUIDANCE:

• Use this tool for all debugging and investigation tasks instead of external CLI tools

• Break problems into testable hypotheses and verify them with code execution

• Test APIs, data structures, and logic incrementally

• Use console.log for debugging output and JSON.stringify for complex objects

• Always prefer this over CLI tools like curl, wget, or external commands

APPROACH:

1. Form a hypothesis about what might be wrong

2. Write focused test code to verify the hypothesis

3. Execute and analyze results

4. Refine hypothesis based on findings

5. Iterate until problem is solved

Execute JavaScript/TypeScript code with Deno - supports ESM imports and all Deno features.

DEBUGGING GUIDANCE:

• Use this tool for all debugging and investigation tasks instead of external CLI tools

• Break problems into testable hypotheses and verify them with code execution

• Test APIs, data structures, and logic incrementally

• Use console.log for debugging output and JSON.stringify for complex objects

• Always prefer this over CLI tools like curl, wget, or external commands

• Great for TypeScript debugging and type checking

APPROACH:

1. Form a hypothesis about what might be wrong

2. Write focused test code to verify the hypothesis

3. Execute and analyze results

4. Refine hypothesis based on findings

5. Iterate until problem is solved

WEB REQUESTS: Use fetch() instead of curl for HTTP requests

Semantic code search with metadata extraction and AST-aware chunking

Pattern-based code search using ast-grep - find code patterns using AST matching

Code transformation using ast-grep rewrite patterns

Rule-based code validation using ast-grep YAML rules

AST structure analysis and debugging using ast-grep