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

Annotations already declare readOnly, idempotent and closed-world, so the safety profile is covered. The description adds real value with its similarity criteria and the deduplication rule about the same role at other locations, but says nothing about behavior when the id is unknown or how the match threshold is applied.

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 sentence that front-loads the output ('Roles similar to a given job') and packs the similarity criteria and exclusion rule into one clause. No filler.

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?

An output schema exists, so return values need not be explained, and the annotations cover the safety profile. However, for a two-parameter tool with zero schema descriptions, the unspecified id format and completely undocumented limit leave gaps an agent would need to guess at.

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%, so the description carries the full burden and largely fails: 'a given job' implies the required id but never states whether it is a job ID, slug, or URL. The limit parameter — with a default of 10 and a cap of 25 — is not mentioned at all.

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 names the resource ('roles similar to a given job') and defines similarity concretely (title, stack, description overlap), plus a negative rule (excludes the same role at other locations). It does not reference the sibling tools (get_job, search_jobs) to help an agent distinguish when this is preferable, but the retrieval itself is unambiguous.

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 only implied: it is clear you need a seed job in hand, and the exclusion clause hints at 'more like this' exploration, but the description never states when to choose this over get_job or search_jobs, nor any prerequisite that the id must exist.

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