Pagecast has 16 tools with reasonable naming (verb_noun pattern) and detailed descriptions (100-300 chars typical). However, critical gaps undermine quality: (1) Input schemas are inferred from the provided JSON structure but NOT visible in actual source code (src/index.js excerpt is incomplete). (2) Output schemas are entirely undocumented, no tool specifies what fields it returns. (3) Many parameters lack type constraints (e.g., 'actions' in interact_page is an array of objects with optional properties, but no validation rules or error guidance). (4) Error handling is not visible in the code sample. (5) No tool annotations (readOnlyHint, destructiveHint, idempotentHint) despite 12 tools being destructive (WRITE risk). Per-tool scores average 52 due to these structural gaps.

• Document output schema for every tool. Example: record_page returns {sessionId: string, url: string, startTime: number, width: number, height: number}. Use JSON Schema in tool definition.
• Add tool annotations: mark record_page, interact_page, stop_recording, convert_* as destructiveHint=true; mark list_sessions, list_recordings as readOnlyHint=true. This enables agents to reason about side effects.
• Add pagination to list_sessions and list_recordings: include limit (default 20, max 100), offset, and return {items: [...], total: number, hasMore: boolean}.
• Enhance interact_page 'actions' parameter: replace free-form object array with strict schema. Each action must declare type (enum: wait|scroll|click|hover|type|press|select|navigate|waitForSelector) and required fields per type (e.g., click requires selector, type requires text).
• Implement error handling with recovery guidance. Example: if sessionId not found, return {error: 'Session not found', code: 'SESSION_NOT_FOUND', suggestion: 'Call list_sessions() to see active sessions', retryable: false}.