Server provides 4 tools with reasonable descriptions and schemas. Tool naming follows verb_noun convention (list_, generate_, post_, generate_and_post_). All tools have JSON Schema input definitions with typed properties. However, several definition quality issues reduce the score: (1) 'generate_and_post_worklog' violates single-responsibility principle by combining two distinct operations; (2) parameter descriptions lack validation constraints (e.g., date format details, hour ranges); (3) no output schemas are documented anywhere; (4) error handling and recovery guidance is absent; (5) descriptions include trigger examples which are helpful but not standard practice and risk being treated as literal values by LLMs. The schema quality is adequate (all tools have typed properties with descriptions), but lacks detail around validation rules, ranges, and edge cases. Descriptions are moderate length (194-388 chars), falling within the 10-1024 baseline but on the longer side due to example listings.

• Split 'generate_and_post_worklog' into two independent tools: 'generate_worklog' (already exists) and 'post_worklog' (already exists). Remove the combined variant to enforce single responsibility.
• Document output schemas for all 4 tools. E.g., 'list_povio_projects' should document: returns array of {project_id: number, project_name: string}. Add these to the tool registration in ListToolsRequestSchema handler.
• Add enum constraints to parameters. Change 'timeframe' from free-form string to enum: ['today', 'yesterday', 'YYYY-MM-dd', 'MM/dd/YYYY', 'dd.MM.YYYY']. Add min/max for 'hours' (e.g., 0.25-24).
• Replace trigger examples in descriptions with formal constraints. Move 'wl list', 'wl today' to a separate README section. Keep descriptions focused on WHAT the tool does and WHEN to call it.
• For mutually exclusive parameters (projectId vs projectName), add explicit rules: 'Specify either projectId or projectName, not both. If neither provided, uses DEFAULT_PROJECT_ID from environment. Will fail if DEFAULT_PROJECT_ID is not set.'
• Add error guidance to descriptions. E.g., 'If project not found, call list_povio_projects() to see available projects. If date format is invalid, use YYYY-MM-dd format.'
• Document the idempotency of each tool. E.g., 'Calling post_worklog twice with same parameters on same date will... (create duplicate? update existing?)'. This helps agents decide whether it's safe to retry.
• Add a 'dry_run' parameter to post_worklog so agents can preview what will be posted before actually posting (confirmation request pattern).