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

No annotations are provided, so the description carries full burden. It discloses that the tool is stateless (generates a netlist string without side effects) and returns a ready-to-simulate string. It does not mention limitations or error conditions, but the lack of destructive hints and the read-only nature are implied.

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?

Three sentences: first states primary action, second lists supported topologies, third describes output and usage. No filler words. Information is front-loaded and efficiently communicated.

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 description covers purpose, templates, output, and integration with spice_simulate. It does not specify error handling or that params keys must match the chosen template, but given the presence of an output schema and the simplicity of the tool, it is sufficiently complete. Could be slightly more detailed about parameter requirements per template.

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 includes descriptions for all parameters. The description adds examples for params ('r_ohms, c_farads, v_source') and names the template categories (low-pass RC filter, etc.), providing mild enrichment beyond schema. This justifies a score above the baseline of 3.

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 clearly states the tool's purpose: 'Generate a complete SPICE netlist from a parameterized template.' It lists supported topologies and explicitly contrasts with spice_simulate by noting the output feeds into it. This distinguishes it from sibling tools that perform calculations or other functions.

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 provides explicit guidance: 'Use this when an agent needs to construct a circuit from high-level parameters without writing raw SPICE syntax. Feeds into spice_simulate for AC/DC/transient analysis.' This tells when to use and how the output is used. It does not explicitly state when not to use or name alternatives, but the context is clear.

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