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

Annotations already declare readOnly, idempotent, openWorld and non-destructive, so safety is covered. The description adds genuinely new context beyond that: it flags that headline and bio are interpreter-written text marked userWritten, which is a content-trust disclosure the annotations cannot convey. It omits any note on behavior for unknown/private ids or error cases.

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 sentences, purpose front-loaded, no filler. The field enumeration partially duplicates the output schema, so some of it is work already done elsewhere, but it remains compact rather than padded.

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 the return shape needs no explanation, and annotations cover the safety profile. Combined with the userWritten provenance note, an agent has enough to call and interpret the result, with only the sibling-routing guidance missing.

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 100% and the single parameter already explains the id-or-URL format thoroughly. The description contributes nothing about the parameter; baseline 3 applies when the schema does all the work.

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: fetching 'one interpreter's public profile' by singular scope, which implicitly contrasts with the plural find_interpreters sibling. It enumerates the resource's contents, so the agent knows exactly what comes back, but never names find_interpreters as the discovery path to obtain the id.

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: an agent infers this is the detail-fetch step after a search, but the description never says 'use after find_interpreters' or 'use get_open_slots for availability'. No exclusions or preconditions are given, though the singular scope plus sibling set makes the role reasonably inferable.

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