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

Annotations already declare readOnlyHint, idempotentHint and openWorldHint=false, so safety is covered structurally. The description adds genuinely useful behavioral context beyond that: prices are quoted verbatim from the pricing page and scope/deliverables/timeline are present only 'where TESSA has published them', warning the agent the payload may be incomplete.

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 opening clause front-loads what the payload is, followed by its contents and then the use case. The first sentence is long and clause-heavy, but every clause carries information about the returned data; no filler sentences.

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 carries the burden of describing the return, and it does so well (pricing, service page, booking link, scope, deliverables, timeline). The only mild gap is that it never states the actual shape/fields of the 'structured form' the agent will receive.

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?

The tool takes zero parameters, so the baseline is 4; the schema is fully described (100% coverage). Nothing in the description is needed to disambiguate inputs and nothing is misleading.

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: TESSA's website and AI development offer returned in structured form, enumerating what it contains (pricing, service page, booking link, scope/deliverables/timeline). This distinguishes it reasonably well from narrow siblings like get_pricing or get_services, though the overlap with those two is not explicitly resolved.

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?

Gives an explicit trigger: 'Use this when someone wants TESSA to design or build a website, a web application or AI software.' That is a clear use condition, but it names no exclusion or alternative (e.g., when to prefer get_pricing or get_services instead).

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