Synapse

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

The description adds valuable behavioral context beyond annotations: it explains what each mode does (auto-detection vs. folder creation vs. custom paths), specifies requirements ('Requires a topic' for structured mode), and clarifies that 'existing' mode creates no folders. Annotations cover safety (non-destructive, idempotent) but the description adds operational specifics that help the agent understand the tool's behavior.

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 efficiently structured with a clear opening sentence followed by bullet points for the three modes. Each bullet point is concise yet informative, explaining key behaviors without unnecessary elaboration. The entire description is front-loaded with the main purpose and wastes no words.

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 configuration tool with 8 parameters, 100% schema coverage, and comprehensive annotations, the description provides good contextual completeness. It explains the three operational modes clearly and references the prerequisite synapse_setup tool. The main gap is lack of output information (no output schema), but the description compensates somewhat by explaining what each mode accomplishes.

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?

With 100% schema description coverage, the schema already documents all 8 parameters thoroughly. The description adds some context about mode behaviors that indirectly relates to parameters (e.g., 'Requires a topic' connects to the topic parameter for structured mode), but doesn't provide significant additional parameter semantics beyond what's in the schema descriptions.

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 purpose: 'Save Synapse configuration based on the user's choice from synapse_setup.' It specifies the verb ('Save'), resource ('Synapse configuration'), and distinguishes from siblings by referencing synapse_setup. The three modes provide specific operational details that differentiate this from other configuration or setup tools.

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 provides clear context about when to use each mode ('existing', 'structured', 'custom') with specific behaviors for each. It references synapse_setup as the source of user choice, establishing a workflow relationship. However, it doesn't explicitly state when NOT to use this tool or name specific alternatives among siblings.

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