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

Annotations already declare readOnlyHint=true, destructiveHint=false and openWorldHint=false, so the safety profile is covered. The description adds useful provenance — leads arrive from site, catalog and public pages — but says nothing about ordering, result size, pagination, or whether all leads or only recent ones are returned.

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?

Two short fragments with no filler, and the resource definition is front-loaded ahead of the filtering note. The clipped phrasing ('People interested in training...') costs a little clarity but wastes nothing.

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 simple zero-required-parameter read tool with annotations and no output schema, the essentials are present. Gaps remain on result ordering/limits and on how this list relates to the per-lead tools, which an agent would need when deciding between them.

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 50%: 'search' is documented in-schema while 'status' relies on its enum. The description only restates that these two filters exist and adds no matching behaviour, default status, or combinability detail, so it does not compensate for the uncovered half.

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?

The description identifies the resource concretely — people interested in training with the trainer, sourced from site, catalog and public page — which goes beyond restating the name. It does not explicitly contrast itself with get_lead/update_lead, but the plural-listing vs single-record distinction is clear from the name.

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?

There is no statement of when to use this tool versus get_lead (fetch one), list_join_requests, or read_lead_chat. 'Filter by status or search' describes how to filter, not when the tool is the right choice, so usage must be inferred from the name alone.

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