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

Annotations already cover the safety profile (readOnlyHint=true), so the bar is lower; the description adds the concrete return field list, the underlying endpoint mapping, and the team scoping constraint. It stops short of noting error behavior (e.g. what happens for an unknown counterId or cross-team id).

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 front-loaded sentence with the verb, key, and payload shape, followed by a compact endpoint parenthetical. No filler and nothing redundant.

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 enumerates the returned fields (service, org, openIncidentsCountForService, incidents, badgeURL) and notes team scoping. It is essentially complete for a simple single-resource read, minor gaps only around failure modes.

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%, so both counterId and teamId are already fully documented in the schema (including the default-team fallback and the spike_list_teams hint). The description's mention of counterId adds nothing beyond the schema, so the baseline 3 applies.

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 and resource ('Get one service') plus the identifying key (counterId), which cleanly separates it from the sibling spike_list_services. The included response field list further pins down the scope of the resource.

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 description implies lookup-by-identifier usage and mentions the request is team-scoped, but it never explicitly tells the agent to call spike_list_services first to obtain a counterId — that guidance lives only in the schema. No when-not or alternative is stated in the description text.

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