authenticate

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

With no annotations provided, the description carries the full burden of behavioral disclosure. It reveals the token exchange mechanism, env var requirements, and the one-time prerequisite nature. However, it does not describe what happens on success or failure, or whether it establishes a persistent session, which would add further transparency.

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?

The description is remarkably concise—two sentences that front-load the purpose and follow with the necessary requirements. Every word contributes meaning, with no redundancy or fluff.

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?

Given the tool's simplicity (zero params, no output schema), the description covers the essential context: what it does, when to call it, and what it needs. A minor gap is that it doesn't explicitly state that the obtained access token is stored for subsequent calls, but the 'must be called once' phrase strongly implies this.

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?

The input schema has zero parameters, so the description is the only source of semantic detail. It compensates by specifying the required environment variables (FILEVINE_CLIENT_ID, FILEVINE_CLIENT_SECRET, FILEVINE_PAT), which are effectively the tool's inputs. This exceeds the baseline for zero-parameter tools.

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 clearly states the tool's function: exchanging a Personal Access Token for an access token. It also specifies a prerequisite role, distinguishing it from sibling authentication tools like auth-status and logout.

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?

Explicitly states when to use: 'Must be called once before using other Filevine tools.' This provides clear timing and prerequisite context, leaving no ambiguity about the tool's placement in the workflow.

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