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

Annotations already cover the safety profile (readOnly, idempotent, non-destructive), but the description adds real behavior beyond them: pagination via next_cursor and an alternative return shape ('setup_required with eligible workspaces'). It doesn't discuss rate limits or result ordering, keeping 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?

Front-loaded with the purpose and kept to four short sentences, each carrying useful information (scope, when-to-use, return shape, pagination). Slightly more prose than strictly needed, but nothing is redundant filler.

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?

With no output schema, the description correctly takes on the burden of describing returns ('paginated projects or setup_required with eligible workspaces') and tells the agent how to page. The remaining gap is the undocumented 'limit' parameter.

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 carry parameter meaning. It covers workspaceId ('within one workspace') and cursor ('Follow next_cursor when more results are needed'), but the 'limit' parameter is undocumented in both schema and description and no format guidance is given, so it only partially compensates.

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 ('List accessible Replo projects') plus scope ('optionally within one workspace'). The line 'Listing does not create a project' actively distinguishes it from the sibling create_project, so the agent doesn't confuse the two without opening either 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?

'Use to resolve the project for the user's Replo request' gives a clear context for invocation, and 'Listing does not create a project' implicitly signals when not to use it. However, no alternative sibling (e.g. get_project when the ID is already known) is named, so it stops short of explicit routing.

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