get_node_pack_details

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

Despite no annotations, the description fully discloses behavior: 'Read-only and network-only (hosted registry over HTTP); does not require a running ComfyUI.' This clearly communicates the safe, stateless nature of the operation without any contradiction.

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?

Everything is front-loaded: the first sentence states the purpose and return fields, the second provides usage guidance. No filler sentences.

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, the description lists return fields explicitly (description, author, license, etc.). Parameter count is low (1), and the description covers behavioral context (read-only, network-only). Minor improvement could be hinting at error cases (e.g., pack not found), but overall sufficient.

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% with a clear description for the single 'id' parameter. The description reinforces its meaning ('Exact registry pack id') and provides an example ('e.g. comfyui-impact-pack'), adding context beyond the 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?

The description specifies the exact verb 'Get full details' and the resource 'one ComfyUI custom node pack from the public ComfyUI Registry'. It lists specific fields (description, author, license, etc.) and distinguishes from sibling 'search_custom_nodes', which provides summary information.

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?

Explicitly instructs the agent to 'Look up the pack id via search_custom_nodes first', setting a clear prerequisite. Also explains that the tool is 'Read-only and network-only' and 'does not require a running ComfyUI', helping the agent decide when to invoke it over similar tools.

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