pacs_echo

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

With no annotations provided, the description carries the full burden and succeeds in disclosing the mechanism (C-ECHO/HTTP ping) and return values (success/failure, response time, connection details). Could be improved by mentioning timeout behavior or whether this requires specific network permissions.

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?

Perfectly structured: premium tag, one-sentence purpose, mechanism explanation, and return value disclosure. No wasted words; every clause adds necessary context beyond the structured fields.

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 zero-parameter tool without an output schema, the description adequately compensates by detailing the return values in text. Would benefit from mentioning error conditions or timeout handling, but sufficient for the tool's complexity.

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?

Input schema has zero parameters, establishing a baseline of 4. The description appropriately focuses on behavior and outputs rather than inventing parameter documentation where none exists.

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?

Excellent specificity: 'Verify PACS connectivity' uses a clear verb + resource, and the mention of 'C-ECHO (DIMSE) or HTTP ping' technically distinguishes this from siblings like pacs_query and pacs_retrieve which perform data operations rather than connectivity checks.

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 implied usage context ('confirm the PACS server is reachable'), suggesting when to use it (before data operations), but lacks explicit guidance like 'Use this before pacs_query' or warnings about when not to use it vs. alternatives.

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