Environment

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

The description adds behavioral context beyond the annotations. It notes that passwords are never returned for 'get' operations, that the 'delete' action is destructive and requires confirmation, and that 'projectUuid' auto-resolves from the git repo for 'list' when omitted. These details are not present in the annotations (which only mark destructiveHint and readOnlyHint). However, some behaviors (e.g., rate limits, auth requirements) are not mentioned, so a 4 is appropriate.

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 well-structured with bullet points for each action, making it easy to scan. It is moderately long but every sentence provides useful information. It could be slightly more concise by removing redundant phrasing (e.g., repeating 'environment' in each bullet), but overall it is efficient and front-loaded with the main action dispatch.

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?

Given the tool's complexity (14 parameters, multiple actions, no output schema), the description covers the key aspects: action behavior, parameter roles, return types (e.g., paginated list, environment with credentials), and special behaviors (e.g., password never returned, auto-resolve). It lacks some details like error states or exact output format for 'get' and 'list', but the information provided is sufficient for an agent to use the tool correctly in most scenarios.

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 baseline is 3, but the description goes far beyond by explaining each action's parameter patterns and expected outcomes. For example, it specifies that 'get' returns environments with credentials inline (but passwords never returned) and that 'list' auto-resolves projectUuid from git. These details are not in the schema and add significant semantic value, enabling the agent to construct valid invocations.

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 that the tool manages environments and login credentials under a project, and it enumerates five specific actions (get, list, create, update, delete) with distinct purposes. This verb+resource combination is specific and differentiates the tool from its siblings (e.g., project, test_suite, executions), which operate on different entities.

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 lists the available actions and their parameters, implying that the agent should use the appropriate action based on the desired operation. However, it does not explicitly state when to use this tool versus alternatives (e.g., for environment management vs. project management), nor does it provide when-not-to-use conditions or exclusions. The guidelines are functional but not comprehensive.

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