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

Annotations already declare readOnlyHint, idempotentHint, destructiveHint=false and openWorldHint=false, so the safety profile is covered. The description adds only that the returned details are 'public' and that the id must originate from a prior search; it says nothing about missing-id behavior, auth, or rate limits.

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?

One front-loaded sentence that states verb, resource and the id's provenance with no filler. It is appropriately sized for a one-parameter lookup, though it spends its only clause on provenance rather than sibling disambiguation.

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?

An output schema exists, so return values need not be explained, and the single-parameter contract is fully covered by schema plus description. The remaining gap is disambiguation from the sibling 'get_offer', which the description leaves unresolved.

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 required parameter with 100% schema description coverage ('Offer id from search'), so the schema already carries the semantics. The description restates the same provenance constraint without adding format or edge-case detail.

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?

States a specific verb ('Fetch') and resource ('full public details of one akay.ie offer') scoped to a single record by id. However, it does not distinguish itself from the sibling tool 'get_offer', which sounds like it performs the same task, so an agent cannot tell the two apart from the description alone.

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 by requiring 'the id returned from search', which tells the agent this is a follow-up call after a search. It never says when to prefer this over get_offer, nor which sibling ('search' vs 'search_offers') supplies the id.

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