Following

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

With annotations present, the description adds real value beyond them: it discloses that the call consumes paid API credits, requires confirm=true, and explains the otherwise-confusing readOnlyHint=false by stating that read-like POST requests do not publish to social platforms. It also notes cursor pagination. It does not cover rate limits or failure behavior, keeping it short of a 5.

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-loaded with the purpose, then return fields, accepted inputs, pagination, and the cost/confirm constraint in four tight sentences with no filler. Every sentence carries distinct information.

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?

There is no output schema, but the description compensates by enumerating the returned fields (login, avatar, profile URL, type, GitHub IDs) and covers pagination, credit cost, and the confirm requirement. An agent has everything needed to call this correctly.

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 the schema already documents all five parameters, making 3 the baseline. The description adds only marginal meaning by listing acceptable identifier forms (username/handle/full profile url) and noting cursor pagination, and it mentions a 'username' form that does not map cleanly onto any named schema property.

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: 'Retrieves public accounts followed by a GitHub user', and even enumerates the returned fields. The wording inherently separates it from the sibling github_followers (following vs. followers), though it never names that sibling explicitly, so the distinction depends on careful reading rather than an explicit contrast.

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 context is implied by the purpose ('accounts followed by'), but there is no when-to-use guidance and no mention of the obvious alternative, github_followers. It does supply invocation prerequisites (confirm=true, paid credits), which is helpful but is not routing guidance.

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