freshbooks_auth_url

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

Annotations already declare readOnlyHint=true and openWorldHint=false, but the description adds non-obvious behavioral facts beyond them: the state parameter binds approval to this server, the URL is valid 15 minutes, and it is single-use. It also clarifies 'contacts nothing', which corroborates the openWorldHint=false annotation rather than contradicting it.

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, front-loaded with the purpose and then the exact follow-up action, with no filler. Every clause (validity window, single-use, state binding, read-only) carries actionable 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?

With no output schema, the description still tells the agent what it receives (a consent URL) and precisely what to do with it, closing the OAuth loop to the sibling tool. Nothing needed to invoke or continue the flow is 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?

The tool takes zero parameters, so the schema baseline is 4 and there is no parameter syntax the description needs to carry. The description correctly spends no words on inputs.

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 the FreshBooks consent URL') plus the intent ('to authorize this connection'), and explicitly names the sibling it hands off to (freshbooks_auth_exchange). An agent can distinguish this from the exchange step without opening either schema.

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?

Provides an explicit procedure (open, approve, land on redirect URL) and an exact handoff rule ('pass that whole URL to freshbooks_auth_exchange'), naming the alternative tool and the sequencing. This is a textbook when-to-use and what-next instruction.

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