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

Annotations already declare the operation safe and idempotent (readOnlyHint, destructiveHint false, idempotentHint true), so the safety burden is lifted. The description still adds real context: the catalog is curated/reviewed, each result carries its official source and last-checked date, and listings are explicitly not a claim of eligibility. Return-shape and pagination are not detailed, keeping this below a 5.

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?

Three sentences, front-loaded with the core action and scope, then provenance details and finally a caveat. No filler or redundancy. Slightly more preamble than strictly necessary compared to a one-line scope statement, so not a full 5.

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 no-required-param search tool with a fully documented schema and no output schema, the definition covers scope, provenance of results, and the implications of a listing. The only gap is behavioral detail around result ordering or pagination, which is minor given the limit parameter is already documented.

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 100%, so the schema already documents kind, limit, query and provider including defaults and bounds. The description only repeats the provider examples (AWS, Google Cloud, Stripe), adding no syntax or semantics beyond the schema. Baseline 3 applies.

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 and resource ("Searches the reviewed catalog of startup credits, programs, support and product discounts") and enumerates the provider scope, so the agent knows exactly what domain is covered. It does not, however, distinguish itself from siblings like get_program, compare_programs or whats_changed, which also operate on this catalog.

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 kind/query/provider parameters signal that this is a browse/filter entry point. There is no explicit guidance on when to use it instead of get_program or compare_programs, and no prerequisites or exclusions are given. The closing caveat about qualification is a useful qualifier but not routing guidance.

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