Tool definitions lack visible input schemas and parameter descriptions in the provided source. Registry file shows tool names and brief descriptions (10-60 chars), but no JSON Schema definitions, parameter types, or constraints are evident. Tool names follow verb_noun convention (atm_begin, atm_task_list, atm_task_get, atm_task_patch), which is positive. However, descriptions are minimal (e.g., 'List tasks in the current project with optional filtering' for atm_task_list). No parameter documentation visible. Error handling and output schemas not documented in source. Composition is reasonable (9 focused tools), but lack of schema visibility prevents confident assessment of parameter quality, validation, and output structure.

• Add explicit JSON Schema definitions for all 9 tools with typed parameters (string, number, boolean, enum). Include minLength, maxLength, pattern, and enum constraints.
• Expand tool descriptions to 80-150 characters. Include: (1) what the tool does, (2) when to call it vs similar tools, (3) what it returns. Example: 'Get detailed task info including status, assignee, and progress. Call after atm_task_list to drill into a specific task. Returns task_id, title, status, assignee, progress_percent.'
• Document all parameters with descriptions explaining format, valid values, and constraints. For atm_task_patch, enumerate all 16 operation types (e.g., 'set_status', 'assign_user', 'add_label') as an enum.
• Document output schemas for all tools. Specify field names, types, and whether results are paginated. For atm_task_list, clarify if it returns total_count, next_cursor, and per-item structure.
• Add error handling guidance. For atm_task_get with invalid task_id, return 'Task not found. Call atm_task_list to find valid task IDs.' instead of a bare 404.