Noleemits Vision Builder MCP

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

With no annotations provided, the description carries the full burden of behavioral disclosure. It states the tool performs an insertion (a write operation) but doesn't mention permissions required, whether the operation is idempotent, error handling (e.g., invalid parent_id), or what happens on success (e.g., returns new element ID). For a mutation tool with zero annotation coverage, this leaves significant gaps in understanding its behavior.

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 a single, efficient sentence that front-loads the core action ('Insert a widget element') followed by the key context ('at a specific position within an existing column or section'). There is no wasted verbiage, and every word contributes to understanding the tool's purpose.

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?

For a mutation tool with 5 parameters, no annotations, and no output schema, the description is incomplete. It lacks behavioral details (e.g., side effects, error cases), usage prerequisites, and differentiation from siblings. While concise, it doesn't compensate for the missing structured data, leaving the agent under-informed about critical aspects of tool invocation.

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 100%, so the schema already documents all 5 parameters thoroughly. The description adds minimal value beyond the schema—it implies 'position' and 'widget_type' usage but doesn't provide additional context like format examples or constraints. Baseline 3 is appropriate when the schema does the heavy lifting.

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 action ('Insert'), the resource ('a widget element'), and the location context ('at a specific position within an existing column or section'). It distinguishes from sibling tools like 'update_element' or 'delete_element' by specifying insertion rather than modification or removal. However, it doesn't explicitly differentiate from 'add_*' tools which might serve similar purposes in 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 provides no guidance on when to use this tool versus alternatives like 'update_element', 'add_*' tools (e.g., 'add_hero'), or 'create_page'. It mentions the context ('within an existing column or section') but doesn't specify prerequisites (e.g., needing an existing page structure) or exclusions (e.g., not for creating new pages).

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