Test Simple Echo

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

Annotations already declare readOnlyHint, idempotentHint, destructiveHint=false and openWorldHint=false, so the safety profile is fully covered elsewhere. The description adds only that the input is echoed back, and stays silent on what use_test_db does or whether any side effects touch a database.

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?

A single front-loaded sentence with no wasted clauses; the only minor filler is the adjective 'simple'. Nothing is buried.

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?

An output schema exists, so return values need not be described, and the tool is low-complexity. However, with two undocumented parameters and no stated behavior of the boolean flag, the definition is not quite complete enough to invoke confidently.

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% for both parameters, so the description carries the full burden and fails: it never explains 'message' or, more importantly, 'use_test_db', whose name suggests it could redirect the echo to a test database. An agent cannot infer its semantics from the schema.

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 ('echo') and resource ('tool'), plus the diagnostic purpose ('testing connection and basic parameter parsing'). It is clear what it does, but it never differentiates itself from the sibling diagnostic tool test_error_handling.

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?

'For testing connection and basic parameter parsing' implies a diagnostic/smoke-test context, but there is no explicit when-to-use statement and no mention of when to prefer test_error_handling or any other sibling.

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