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

Annotations already declare readOnlyHint=true and openWorldHint=true, so the safety profile is covered. The description adds genuinely useful behavior beyond that: the price field is a 'best-effort' parse from the title, and the filter IDs must be sourced externally (slickdeals_forums / slickdeals_deal_types). It doesn't cover pagination or result 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?

Front-loads purpose, then return fields, then optional filters, with no filler. It is dense but each clause carries information; the only slight cost is that the return-field list is arguably redundant given an output schema exists.

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 explaining return fields is not strictly required, but the description covers the required keyword param, both optional filters with provenance, and the hand-off to the detail tool, leaving nothing an agent needs to invoke it. Missing only secondary details like pagination or result ordering.

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%, so the baseline is 3, but the description adds real meaning: concrete example values for both filters (Hot Deals/Coupons, Coupon/Free/Freebie/YMMV), the authoritative source of each ID, and the fact that forum_id and deal_type_id compose. That is more than the schema's terse descriptions provide.

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 ('Search') and resource ('Slickdeals deal threads') with the matching key ('free-text keyword'), then enumerates the returned fields (title, price, merchant domain, vote score, username, time). This lets an agent distinguish it from slickdeals_search_advanced and slickdeals_deal without opening a schema.

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 routes the agent to slickdeals_deal for the full detail record and tells it to pair a thread_id/url, which is clear usage context. It also documents the prerequisite ID sources for the two optional filters. It stops short of stating when to prefer the advanced-search sibling, so no explicit exclusion is offered.

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