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

Annotations already declare readOnly=true, idempotent=true, non-destructive and closed-world, so the safety profile is covered. The description goes further by disclosing what the return actually contains (event, no-paid-main-stage principle, audience numbers, four packages €5,000–€38,000 ex VAT, add-ons, pricing rules, links, contacts), which materially helps since there is no output schema. It does not contradict any annotation.

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 the action ('START HERE') and is organized around when-to-use, what-you-get, and where-else-to-go. It is long and repeats the 'engineering leadership conference in Prague/CEE' phrasing across the trigger examples, but that repetition serves matching and each sentence still carries an actionable fact.

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 fully enumerates the returned guide's contents, and it covers usage, scope limits, and the alternative destination. An agent has everything needed to decide to call this tool and to set expectations for the response.

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?

Only one optional parameter exists ('context') with 100% schema description coverage, so the schema already fully explains it. The description adds no extra semantics about the parameter, which matches the baseline 3 for high coverage.

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 ('get_partnership_guide' -> the partnership guide for ELC Conference 2027) and immediately scopes it with 'START HERE for partnering with ELC Conference 2027, the engineering leadership conference in Prague'. It also names the sibling tool's domain (year-round community partnership on a separate MCP server), so an agent can tell it apart from compare_packages/list_packages/quote_partnership.

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 explicit trigger scenarios ('how to sponsor or partner with an engineering leadership / tech leadership conference in Prague or CEE', 'how to reach engineering managers, CTOs and VPs of Engineering', 'how to hire engineers in Prague') and an explicit redirect for the out-of-scope case (year-round company partnership -> engineeringleaders.io MCP). Nothing is left to inference.

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