setup_fpc

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

No annotations are provided, so the description carries the behavioral disclosure burden. It specifies the exact version (3.2.2), the source (official SourceForge mirror), the installation mode (silent), and the potential need for administrator privileges. These details give the agent a realistic picture of the tool's side effects beyond the one-sentence summary.

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?

The description is compact and front-loaded. It opens with the core action, follows with the usage condition and behavioral specifics, and closes with the parameter explanation. Every sentence contributes needed information with no fluff or repetition.

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?

The tool has one optional parameter, an output schema, and a well-documented installation behavior. The description covers the invocation condition, download source, version, silent-install behavior, privilege requirement, and install directory semantics. Nothing essential for correctly calling 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 0%, but the description thoroughly documents the only parameter: 'Where to install FPC. Defaults to C:\FPC\3.2.2. Avoid paths with spaces.' This meaningfully adds guidance beyond the schema's bare property name and default, including a practical constraint.

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 first sentence states a specific verb and resource: 'Download and install Free Pascal Compiler (FPC).' This clearly identifies the tool's function and distinguishes it from sibling tools like compile_pascal and run_pascal, which operate on source code rather than installing the compiler.

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 description explicitly states when to use the tool: 'Only use this when no Pascal compiler is available on the system.' It provides a clear condition for invocation but does not name alternative tools or explain what to do when a compiler already exists, so it stops short of a full when/when-not/alternatives treatment.

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