Add several products to a board (guaranteed real images)

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

With no annotations provided, the description carries the full burden of behavioral disclosure. It thoroughly explains the fallback strategy (product photo, web-searched photo, link block), guarantees that no item is skipped, and describes the return value (how each item got its image: og/arena/search/link). This is robust disclosure for a mutation tool.

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 three sentences long and front-loaded with the key differentiator ('Batch version of arena_add_product'). Every sentence provides useful information: item structure, guarantee of image handling, never skipping, and return format. No filler or redundancy.

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 the moderate complexity (2 params, nested array, no output schema, no annotations), the description covers all essential aspects: what it does, the item format, the image-resolution behavior, the guarantee of never skipping, and the return value. The only omitted detail is the channel_slug parameter, which is trivial. It is sufficiently complete for an agent to invoke correctly.

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?

Although schema description coverage is 0%, the description compensates by detailing the item structure: each item contains url (required), and optional title, note, and fallback_urls. It does not explain channel_slug, but that parameter is self-explanatory. The description adds significant meaning beyond the raw schema for the complex nested items array.

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 this as the batch version of arena_add_product, with the explicit purpose of adding multiple products to a board. It names the sibling tool for differentiation and describes the core behavior: every item is added, with a guaranteed image via a fallback chain.

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 references arena_add_product, making it clear that this is the batch counterpart and thus should be used for multiple products. While it does not spell out 'use arena_add_product for a single product,' the batch distinction provides a clear context for selection. It does not mention other alternatives like arena_add_block, but the product-specific nature is evident.

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