Multilead Open API 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 states this is a retrieval operation but doesn't disclose behavioral traits like whether it requires specific permissions, rate limits, pagination behavior, error conditions, or what happens when threads don't exist. The description is minimal beyond stating the basic operation.

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 appropriately sized with a clear purpose statement followed by parameter documentation and return information. It's front-loaded with the core functionality. The structure is logical, though the 'Args' and 'Returns' sections could be more integrated with the narrative flow.

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 there's an output schema (which handles return values), no annotations, and 4 parameters with 0% schema coverage, the description does provide parameter documentation and states the return purpose. However, for a tool with multiple required parameters and no annotation coverage, it should ideally include more about authentication needs, error handling, or example usage to be fully complete.

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 schema provides no parameter documentation. The description includes an 'Args' section that documents all 4 parameters with brief explanations, adding meaningful semantics beyond the bare schema. However, it doesn't provide format details (e.g., what constitutes valid thread IDs) or examples, leaving some ambiguity.

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 tool's purpose: 'Retrieve messages from specific conversation threads' with optional filtering by timestamp. It specifies the verb ('retrieve') and resource ('messages from specific conversation threads'), but doesn't explicitly differentiate from sibling tools like 'get_lead_messages' or 'get_messages_for_leads' which might retrieve messages from different contexts.

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?

The description implies usage context through 'retrieve messages from one or more specific threads' and mentions optional filtering for recent updates. However, it doesn't provide explicit guidance on when to use this tool versus alternatives like 'get_all_conversations' or 'get_conversations_by_identifiers', nor does it mention any prerequisites or exclusions.

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