splithub_login

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

With no annotations, the description carries the full burden and does well: it discloses that the tool returns a link plus a code, that a human must approve in a browser, that a project may be created there, and that an API key gets persisted for the folder. This is meaningful side-effect disclosure well beyond the name. It omits failure modes such as code expiry or behavior when already logged in.

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?

Four short sentences, front-loaded with the action and its output before the follow-up instruction. Every sentence conveys information the agent needs — nothing is padding.

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?

Since no output schema exists, the description usefully covers what is returned and what the caller must do with it, plus the mandatory next call to splithub_whoami. A brief note on failure/expiry behavior would make it fully complete for an auth handshake tool.

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?

There are zero parameters, so there is nothing for the description to disambiguate; baseline for a no-param tool is 4. The description adds no misleading parameter language.

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 ('Connect this folder to SplitHub Cloud') and explicitly enumerates the return artifacts (sign-in link and code). It is clearly distinguishable from siblings like splithub_whoami, splithub_status, or splithub_init, which the description implicitly positions as follow-ups rather than substitutes.

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?

Gives a clear triggering condition ('Connect this folder') and an explicit follow-up step ('Call splithub_whoami afterwards'), which is genuinely useful sequencing guidance. It stops short of stating when NOT to use it (e.g., already authenticated, or already have an API key), so it falls just short of the top mark.

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