Single tool with minimal schema and description. Tool description is 104 chars (within 10-1024 range) but generic. No output schema documented. No error handling guidance. No parameter constraints or validation hints. Tool name 'run_python_code' is verb-based but vague about isolation guarantees and safety model. Missing all composition patterns (no chaining IDs, no pagination, no structured output guidance).

• Add description to 'code' parameter: 'Python code to execute (single expression or multi-line statements). Limited to safe builtins; file I/O and imports restricted. Max 10000 chars.'
• Document output schema in tool description: 'Returns {status: SUCCESS|ERROR, stdout: string, stderr: string, eval_result: any, error: string|null, elapsed_sec: float, active_variables: {name: string}}'
• Add error guidance: 'If SyntaxError, check code syntax. If NameError, variable not defined in namespace. If timeout, code took >30s, simplify or break into steps.'
• Clarify isolation model: 'Namespace persists across calls (stateful). Restricted to safe builtins (no file I/O, imports, or network). Stdout/stderr captured. Execution timeout: 30s.'
• Add parameter constraints: 'code must be valid Python; max 10000 chars. Expressions evaluated first; multi-line code executed as statements. Variables persist in stateful mode.'