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

Annotations already declare readOnlyHint, destructiveHint=false and openWorldHint=false, so safety is covered. The description adds genuinely non-obvious behavioral context beyond that: the tool is gated to Pro plan and above, which is an entitlement/auth constraint not available in structured fields. It stops short of describing pagination or volume, which is why it is not 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?

A single dense sentence with zero filler, front-loaded on what is returned and ending with the plan constraint. Every clause (content scope, 'in the tender's own words', routing, plan gate) carries information.

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 usefully sketches the return payload (requirement categories, verbatim text, and routing to an owner) plus the entitlement gate, which is sufficient for an agent to call it. It omits any mention of input source for tender_id or behavior when the tender does not exist, keeping it out of 5 territory.

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 0% and the single tender_id parameter carries no description in either place, so the description 'must compensate' and does not — it never explains what tender_id refers to or its expected source (e.g., from search_tenders/get_tender). The name is self-evident enough that this is not fatal, so a baseline-adjacent 3 is fair.

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+resource ('Every requirement of a tender') and enumerates the content categories covered (financial, experience, certifications, registrations, bid security, documents), so an agent knows exactly what it returns. It does not explicitly contrast itself with siblings like get_tender or get_bid_kit, which likely also touch tender detail, so differentiation must be inferred.

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 'Pro plan and above' note is a real eligibility gate the agent must respect before calling. However, there is no statement of when to prefer this over get_tender or get_bid_kit, so usage against alternatives is only implied by the phrase 'Every requirement'.

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