Add a project reference to a solution project

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

With no annotations, the description carries the burden, and it discloses the key behavioral traits: it modifies a local .cdsproj file only, must be run from the solution project folder, and shells out to pac solution add-reference. It does not detail error behavior or exact file changes, but the safety scope and execution model are clear.

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?

Four short sentences, each supplying useful information: purpose, required working directory, side-effect scope, and underlying command. No redundant restatement of the title or schema.

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 output schema and no annotations, the description covers the main behavioral contract (local file change, folder requirement, command used) and the schema covers all parameters. It could add the shape of the command's result or failure modes, but nothing essential for invoking the tool is missing.

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 baseline applies: the schema already documents cwd, path, profile, background, and timeoutSeconds. The description adds little beyond noting the cwd requirement and active profile, so no extra parameter credit is warranted.

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 names a specific verb and resource: reference another project (plug-in, PCF, ...) from a .cdsproj so it is packed into the solution. This is clear and aligns with the title, but it does not explicitly differentiate from closely related siblings such as cs_add_solution_component, so it stops short of 5.

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?

It gives actionable context: run it in the solution project folder (cwd), it is a local file change only, and it invokes the pac add-reference command with the active pac auth profile. It doesn't name alternatives or exclusions, but the context is concrete enough for an agent to know the intended invocation.

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