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 disclose real behavioral traits: it creates an enterprise session, returns an X-SAP-LogonToken, and silently falls back to .env credentials. It stops short of covering failure behavior (invalid credentials), session lifetime, or whether repeated calls create multiple sessions.

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 short sentences, front-loaded with the purpose before the session/token detail and the credential default. Every sentence contributes information an agent needs; nothing is redundant.

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?

For a two-parameter, no-annotation login tool with an output schema (so return values need no prose), the description covers purpose, session/token effect, and credential fallback. The remaining gap is the auth/permission and failure context that a login tool would ideally state.

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% and the schema only marks both params as nullable strings defaulting to null, so the description's explanation that omitting them triggers .env fallback adds genuine semantics for both parameters. It does not, however, clarify expected formats or error cases for bad credentials.

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 ('Log in to the SAP BusinessObjects BI Platform') and adds the concrete outcome: an active enterprise session plus an X-SAP-LogonToken. This clearly separates it from siblings like logout and terminate_session, which are the inverse operations.

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 only usage guidance is the conditional 'If username/password are omitted, values from .env are used automatically,' which is really parameter behavior rather than when-to-use-this-tool guidance. There is no explicit statement about when login is required (e.g., before authenticated calls) or how it relates to logout/terminate_session.

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