Start Saxo OAuth Login

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

Annotations indicate destructiveHint=true and readOnlyHint=false, which the description supports by stating it begins a login (a state-changing operation). The description adds context about environment variable requirements, return values, and optional browser opening, providing value beyond the annotations.

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?

Three concise sentences, with the first stating the core purpose, the second listing prerequisites, and the third explaining output and next step. No extraneous content.

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?

The description adequately covers the tool's role as the first step in OAuth login, including required environment variables, returned data (ticketId, authorizeUrl), and the subsequent step (saxo_oauth_complete). No output schema is needed for this level of detail.

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 0%, meaning parameter descriptions are absent from the schema. The description only indirectly references the 'openBrowser' parameter ('optionally opening it in the browser') and does not explain the 'environment' parameter (sim vs live). It fails to add sufficient meaning for both parameters.

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 it begins a Saxo OAuth2 + PKCE login, with specific verb 'Begin' and resource 'Saxo OAuth Login'. It differentiates from sibling tools by mentioning the returned ticketId and the next step to call saxo_oauth_complete.

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 specifies prerequisites (SAXO_APP_KEY and SAXO_APP_SECRET in environment) and instructs to follow with saxo_oauth_complete. It does not explicitly state when not to use it, but provides clear context for its intended use.

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