Thenvoi MCP Server

Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?

No annotations are provided, so the description carries the full burden. It mentions the action ('Add') but lacks behavioral details such as permission requirements, whether the operation is idempotent, error handling, or what happens if the participant already exists. This is a significant gap for a mutation tool with zero annotation coverage.

Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.

Is the description appropriately sized, front-loaded, and free of redundancy?

The description is front-loaded with the core purpose in the first sentence, followed by a structured 'Args' section that efficiently documents parameters without redundancy. Every sentence earns its place, making it appropriately sized and easy to parse.

Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.

Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?

Given the tool's moderate complexity (3 parameters, mutation operation) and the presence of an output schema (which handles return values), the description is mostly complete. It covers parameter semantics well but lacks behavioral context like permissions or side effects, which is a minor gap since annotations are absent.

Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.

Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?

Schema description coverage is 0%, so the description must compensate fully. It provides clear semantics for all three parameters: 'chat_id' (chat room ID, required), 'participant_id' (ID of user or agent to add, required), and 'role' (with allowed values 'owner', 'admin', or 'member', optional with default). This adds essential meaning beyond the bare schema.

Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.

Does the description clearly state what the tool does and how it differs from similar tools?

The description clearly states the specific action ('Add a participant') and resource ('to a chat room'), distinguishing it from sibling tools like 'remove_user_chat_participant' (removal) and 'list_user_chat_participants' (listing). It precisely defines what the tool does without being vague or tautological.

Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.

Does the description explain when to use this tool, when not to, or what alternatives exist?

Usage is implied by the tool's name and purpose, but there's no explicit guidance on when to use this tool versus alternatives like 'add_agent_chat_participant' (for agents) or prerequisites (e.g., chat room existence). The description assumes context without stating exclusions or comparisons.

Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.