Vercel 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 'Gets' a deployment, implying a read-only operation, but lacks details on permissions, rate limits, error handling, or response format. This is inadequate for a tool with potential complexity in deployment retrieval.

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 extremely concise—a single sentence with no wasted words. It is front-loaded with the core purpose, making it efficient and easy to parse, though this brevity contributes to gaps in other dimensions.

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 no annotations and no output schema, the description is incomplete. It doesn't explain what a 'deployment' entails, the return format, or behavioral aspects like authentication needs. For a tool with 4 parameters and sibling tools, more context is needed to guide effective use.

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 fully documents all parameters. The description adds minimal value by implying 'deploymentId' can be an ID or URL, but this is already covered in the schema. No additional semantics are provided for other parameters like 'slug' or 'withGitRepoInfo'.

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 ('Gets') and resource ('a deployment'), specifying it retrieves by 'ID or URL'. It distinguishes from siblings like 'getDeployments' (plural) by focusing on a single deployment, though it doesn't explicitly contrast with 'getDeploymentEvents' or 'getDeploymentFileContents'.

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?

No guidance is provided on when to use this tool versus alternatives. It doesn't mention prerequisites (e.g., needing a deployment ID), exclusions, or comparisons to siblings like 'getDeployments' for listing multiple deployments or 'getDeploymentEvents' for event details.

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