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

The annotations already cover mutation (readOnlyHint=false), idempotency, openness, and non-destructiveness. The description adds meaningful context beyond that: it discloses the status side effect ('Changes its status to what the test proved'), the return content including the remote server's error text, and the scope limitation ('Pulls no data'). It could still say more about auth requirements or failure semantics, but it is well above the annotation baseline.

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 core action, and every sentence contributes distinct information (return content, side effect, scope). There is no repetition or filler.

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 low-complexity tool with a single documented parameter and rich annotations, the description covers the return value including error text, the status mutation, and the no-data-pull scope. It is nearly complete; only a note on failure handling or permissions would push it to a 5.

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?

There is only one parameter and the schema description coverage is 100% – the schema itself explains the integration_id format (int_...) and points to list_integrations as the source. The description adds no parameter detail beyond what the schema already provides, so the baseline 3 applies.

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 states a specific verb and resource: 'Test one connected system now' clearly identifies a single-integration connectivity test. It implicitly distinguishes itself from list_integrations by operating on one integration and by testing rather than listing, but it never names the sibling, so it stops short of a 5.

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 word 'now' signals immediate execution and 'Pulls no data' hints that this is a verification step rather than a data fetch. However, there is no explicit guidance on when to prefer this over list_integrations or other connector tools, nor any stated exclusions or prerequisites.

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