TinkerTasker defines 4 tools with reasonable naming and basic schemas. Two tools (view, insert) have full JSON Schema definitions with proper type declarations and parameter descriptions. One tool (str_replace) lacks a visible input schema entirely. One tool (fetch) has a complete schema but minimal description. Naming follows verb_noun patterns (view, insert, str_replace, fetch) which is good. However, descriptions vary in quality, some tools like 'view' and 'insert' have clear, actionable descriptions (80+ chars), while 'fetch' is more generic. No error handling guidance is visible in the provided code. No tool annotations (readOnlyHint, destructiveHint) are declared. Parameter descriptions are present for most params but could be more explicit about constraints (e.g., the 'view' tool accepts integers for line numbers but does not specify valid ranges). Output schemas are not documented, we cannot see what these tools return. The server does not implement pagination support for list-like operations (relevant for 'view' directory listing and 'fetch' link results). Overall, this is a functional but basic toolkit that prioritizes filesystem and web operations without polish for agent planning.

• Define the missing input schema for str_replace. Specify all required/optional parameters, their types, and constraints (e.g., old_str, new_str, line ranges, or both?).
• Document output schemas for all 4 tools. Define what 'view' returns for files vs. directories, what fields 'insert'/'str_replace' return (success flag? modified line count?), and what 'fetch' returns (structured link array? raw text with links embedded?).
• Add tool annotations: readOnlyHint for 'view' and 'fetch'; destructiveHint for 'insert' and 'str_replace'.
• Expand str_replace description to 120+ chars with explicit parameter guidance: 'Replaces old_str with new_str in the specified file. Provide old_str and new_str (or line range). Returns success and line count of modified lines.'
• Add error recovery hints to all tool descriptions. Examples: 'If file not found, check the path with view() first.' or 'Fetch may fail on network timeout; consider retrying with a simpler URL.' or 'insert/str_replace fail if the path is outside the working directory sandbox.'
• Add constraints to 'view' parameters: start_line >= 1 (default 1), end_line >= start_line or -1 to end. Document maximum file size or result truncation limits.
• Add constraints to 'insert' and 'str_replace': clarify if insert_line > file length is valid (append to end?) or an error. Specify line indexing (0-indexed or 1-indexed?) consistently.
• Add limit parameter to 'fetch' or document truncation behavior explicitly: 'Results limited to 10,000 chars and 50 links; if truncated, consider fetching a more specific page.'

Inferred effective spec: <=2025-11-25.

• Relies on Logging (deprecated) - log to stderr or use OpenTelemetry