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

Annotations already declare readOnlyHint=true and openWorldHint=false, so the safety profile is covered. The description adds the return field set (uuid, name, schema_namespace, live_url), which is real value given there is no output schema, but it says nothing about ordering, pagination, or what 'can build into' actually filters on.

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 sentence that front-loads the action and scope, with the field list in a compact parenthetical. No filler, nothing to trim.

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 simple read-only listing with one optional parameter and no output schema, the description covers the action and the shape of the result. Minor gap: no mention of whether results are ordered or capped beyond the limit default.

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?

Only one parameter (limit) and schema description coverage is 100%, so the schema already documents the default of 50. The description adds nothing about limit semantics, which is the correct baseline for a fully documented single-parameter schema.

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+resource ('List projects') with a scoping qualifier ('you can build into') and enumerates the returned fields, which distinguishes it from build_list_bound_schemas and build_list_data_sources. It stops short of naming a sibling alternative, but the scope is specific enough to route an agent.

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 'you can build into' phrasing implies this is a discovery step before project-scoped operations, but there is no explicit when-to-use or when-not guidance. With many siblings (build_get_project, build_list_bound_schemas, build_list_capabilities) the description never states why to pick this list over those.

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