collector_binder

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

With no annotations provided, the description carries the full burden and is exceptionally transparent: one logical GET, no continuation pages, no card metadata fan-out, no purchases/layout changes, oversized objects refused as a whole, array limits with truncation reporting, and no partial fields on refusal. It also notes preservation of original fields and relative asset paths.

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 main purpose is front-loaded, but the description is padded with redundancy: 'Oversized objects are refused as a whole' and 'Oversized records are refused without partial fields' say nearly the same thing, and 'One GET' appears twice. The 'observed slug selected three pages and 27 card slots' example is unexplained and adds noise, while the filter-forwarding note conflicts with a schema that has additionalProperties=false.

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 with two string parameters and no output schema, the description covers the operational envelope well: request type, continuation behavior, size limits, refusal behavior, and field preservation. It lacks a concrete return-shape description and precise parameter semantics, but the behavioral coverage is strong enough for safe invocation.

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%, so the description must compensate. It only restates 'by player and binder reference,' leaving the meaning, format, and valid values of player and binderRef unspecified. The generic sentence about required inputs and declared filters adds no concrete parameter guidance and does not match the actual two-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?

The description opens with a specific verb and resource: 'Read one public collector binder by player and binder reference.' This clearly identifies the tool's core action and distinguishes it from bulk or fan-out endpoints, though it does not explicitly name sibling tools.

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 implies usage context by stating this is a single GET with no auto-fetching, no fan-out, and no purchases or layout changes. However, it never explicitly states when to prefer this tool over alternatives such as collector_stickers or collector_config, nor when not to use it.

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