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

No annotations exist, so the description must carry the behavioral load. It does disclose that results include status and last sync, and 'Lists' implies a read-only, non-destructive operation, but it says nothing about permissions, pagination, ordering, or what an empty result means.

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 front-loaded sentence that names the resource and the returned fields with no filler. Every clause earns its place.

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 one optional, fully documented parameter and no output schema, the description is close to sufficient; the return fields are briefly characterized. It falls short only on pagination/ordering behavior and on how 'connected' spaces relate to other org-scoped listing tools.

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 100% and the schema's own description of 'organisation' is unusually thorough, explaining OAuth/API-key scoping and when the parameter can be omitted. The description adds nothing beyond that, so the baseline 3 applies.

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 uses a specific verb and resource ('Lists the AWS DevOps Agent Agent Spaces connected to the organisation') and names the returned fields (status, last sync). It is clearly distinct from siblings like list_organisations or list_mcp_servers, though it never explicitly routes the agent away from them.

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?

There is no when-to-use or when-not-to-use guidance in the description; it does not say whether this is the right call for checking connectivity versus, say, list_organisations. The only usage framing appears in the parameter schema, not the description itself.

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