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

Annotations already declare readOnlyHint, destructiveHint false and openWorldHint, so the safety profile is covered; the description adds genuinely new constraints: only public repos, no API key required, and no resources created. It does not mention rate limits or what the preview payload looks like, which keeps it from a 5.

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?

A single compact sentence pair with the mode ('Dry run') front-loaded and every clause carrying payload: scope, safety, and access prerequisites. Nothing is redundant with the schema or annotations.

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 4-parameter, no-output-schema read-only preview tool, the description covers mode, access requirements, and side-effect freedom. Remaining gaps (private-repo failure behavior, preview output shape) are minor given no output schema exists to explain returns.

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 coverage is 50%, and the description reinforces the two most important parameters (repo_url and branch) by naming 'public repo + branch'. It says nothing about location or server_type, leaving those defaults to the schema, so it adds only marginal meaning at baseline level.

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?

States a specific verb and resource ('check a public repo + branch and show what a deploy would create') and frames it as a 'Dry run', which cleanly separates it from the actual deploy sibling. An agent can tell this is a preview/simulation tool without opening the schema.

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 word 'Dry run' plus 'creates nothing' makes the when-to-use condition (before a real deploy) clear, and 'Public, no key' rules out private repos and auth setup. It does not explicitly name cloudhosting_deploy_project as the follow-up alternative, so it stops short of full routing guidance.

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