Rift MCP server demonstrates solid tool design with complete input schemas, clear descriptions, and proper verb-noun naming. All 7 tools have documented parameters with types and descriptions. Descriptions average ~120 chars, within the 10-1024 char baseline. However, output schemas are not documented in the provided source, parameter constraints lack depth (e.g., no min/max for 'limit', no format specs for IDs), and error handling guidance is absent. The bulk_create tool shows good composition with atomic semantics and per-row error reporting, but most tools lack recovery hints. No tool annotations (readOnlyHint/destructiveHint) despite clear risk classifications in metadata.

• Document output schemas for all tools. Example: links.create should return {link_id: string, custom_id?: string, ios_deep_link: string, android_deep_link: string, web_url: string, created_at: ISO8601}. This enables tool chaining.
• Add tool annotations to tool definitions. Mark links.get, links.list as readOnlyHint=true; links.delete as destructiveHint=true; links.create, links.update as idempotentHint=true (if idempotent via custom_id). Agents will reason about safety.
• Constrain numeric parameters: limit in links.list should be 1-100 (baseline). Add minLength/maxLength to string IDs. Add regex pattern for custom_id if it has format rules (e.g., alphanumeric + hyphens).
• Add recovery hints to descriptions. E.g., links.get: 'If link not found, call links.list() to discover available links.' links.bulk_create: 'Returns per-row errors; fix invalid rows and retry.'
• Clarify pagination in links.list: 'cursor is an opaque string; omit on first call. If response includes next_cursor, more results exist; pass it to fetch the next page. Omit cursor when done.'