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

Annotations already establish readOnlyHint, idempotentHint, destructiveHint=false and a closed world, so the safety profile is covered. The description adds real behavioral context beyond that: exclusivity constraints (one partner per add-on), package prerequisites, and that pricing rules are returned alongside the list. It stops short of describing return format or how many add-ons come back.

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 content is useful but delivered as one dense block that opens with a noun phrase rather than a verb, so the tool's action is never front-loaded. Several clauses (Luminary exclusivity, dinner/afterparty inclusion, discount percentages) are relevant but make the paragraph heavier than it needs to be for a listing tool.

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?

With no output schema, the description does carry the burden of conveying what comes back, and it does so by naming the add-ons and the pricing rules returned. What is missing is any sense of the shape of the response (e.g. that it lists all available add-ons) or how it relates to the package tools an agent would call next.

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?

There is a single optional 'context' parameter with 100% schema description coverage, so the schema fully documents it and the description adds nothing further. Per the baseline rule for well-covered schemas, this is a 4.

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 identifies the resource (add-ons for an ELC Conference 2027 partnership) and enumerates them: category exclusivity, a leadership roundtable, a partner workshop. The verb is only implied by the tool name and 'Also returns the pricing rules', but an agent can tell this surfaces partnership add-on options. Differentiation from siblings is partial — 'needs a package' hints at a relationship to list_packages, but no sibling is named.

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?

Usage is implied rather than stated: the note that each add-on 'goes to one partner only and needs a package' signals a prerequisite, and 'the speakers' dinner and the afterparty are included in Luminary, not sold separately' implicitly warns against seeking those as add-ons. However, there is no explicit when-to-use vs list_packages/compare_packages/quote_partnership routing, and no stated ordering in the buyer journey.

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