freshrss_authenticate

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

With no annotations, the description carries the full burden of behavioral disclosure. It explicitly reveals the state-changing behavior: saving credentials to the environment. It also lists the exact environment variables used as fallback. It does not discuss failure modes or credential validation, but the primary side effect is clearly disclosed.

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 two tight sentences plus a bulleted list. The main purpose and side effect are front-loaded, and every sentence adds value without repetition or 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?

The tool is simple, has an output schema, and the description covers input strategy, environment fallback, and the prerequisite role. It stops short of an explicit 'call this before all other FreshRSS tools' instruction, but the meaning is strongly implied by 'for subsequent calls', so the context is sufficient.

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%, so the description must compensate. It adds meaning by naming the environment variables (FRESHRSS_URL, FRESHRSS_EMAIL, FRESHRSS_API_PASSWORD) and stating that provided parameters take precedence over those variables. This is a useful behavioral detail beyond the schema's nullable parameter declarations, even though it could map each parameter to its env var more explicitly.

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 uses a specific verb ('Authenticate') with a specific resource ('FreshRSS instance') and a clear side effect ('save credentials to environment for subsequent calls'). This distinguishes it from the sibling tools, which are all FreshRSS operations that would follow authentication.

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 phrase 'for subsequent calls' clearly frames this as a prerequisite step before using other FreshRSS tools. It does not name alternatives or when-not conditions, but no sibling auth tool exists to confuse it with, so the context is sufficiently clear.

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