The server defines 2 tools with explicit schemas and descriptions. Both tools have clear input schemas with typed parameters and descriptions. However, critical issues limit the score: (1) Tool naming does not consistently follow verb_noun patterns, 'distribute_deal' uses a gerund-like construct that could be clearer as 'create_deal_variants' or 'distribute_variants'; 'terminate_campaign' is acceptable but vague on what 'terminate' means in context. (2) Output schema is not documented, the tools return JSON text strings without a formal structured schema declaration, making it hard for agents to parse results predictably. (3) Error handling is minimal, both tools catch errors and return text, but provide no guidance on recovery, retryability, or what went wrong. (4) No tool annotations (destructiveHint, idempotentHint, readOnlyHint) despite terminate_campaign being clearly destructive. (5) Parameter descriptions reference example values (e.g., 'e.g. Zomato', 'e.g. food') which invites LLMs to reuse those literals. (6) The distribute_deal tool is complex, generating 54 variants internally, but the output schema is not formally specified, making it opaque to agents. Schemas are present and mostly complete, descriptions are adequate (194-char baseline met), but output handling, error guidance, and tool annotations are gaps.

• Declare explicit return type schemas for both tools. Instead of returning JSON as text, define a structured output with typed fields (e.g., 'variants: VariantObject[]', 'channels_deactivated: number', 'status: string'). This allows agents to plan downstream operations and parse results reliably.
• Add tool annotations: 'terminate_campaign' should have destructiveHint=true; 'distribute_deal' should have idempotentHint=true (calling with identical args produces identical results). Use MCP's toolAnnotations feature (readOnlyHint, destructiveHint, idempotentHint).
• Improve error handling by categorizing failures. Return structured error objects with 'code' (INVALID_INPUT, NOT_FOUND, RATE_LIMITED, INTERNAL), 'message', and 'suggestion'. Example: '{"code": "INVALID_DISCOUNT", "message": "discount_value must be > 0", "suggestion": "Provide a positive number"}'.
• Remove example values from parameter descriptions. Replace 'Merchant name (REQUIRED). e.g. Zomato' with 'Merchant name (REQUIRED). Must be alphanumeric, 1-100 chars.' Use enum constraints (e.g., bank_partner: enum of valid banks) instead of examples.
• Rename 'distribute_deal' to 'create_deal_variants' or 'generate_deal_variants' for clarity. This follows verb_noun convention and clarifies that the tool generates variant content, not distributes to channels directly.
• Add a dry-run parameter to 'terminate_campaign' (dry_run: boolean, default false) so agents can preview what would be deactivated before executing. Or implement a separate 'preview_campaign_termination' tool.