bulk_update_service_envs

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

With no annotations, the description carries full burden. It includes a behavioral note about is_build_time having no effect on services, which adds value. However, it lacks details on whether the update is additive or replaces all, auth requirements, or response 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?

Two concise sentences plus a note. Front-loaded with purpose. Every element earns its place; no fluff.

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 no output schema and simple parameters, the description covers main purpose and a key behavioral note. However, it does not specify whether the operation is additive or replaces all env vars, or what the response contains, leaving some ambiguity for a bulk update tool.

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 100%, so the schema already documents parameters well. The description adds no extra parameter meaning beyond what's in the schema (the note about is_build_time is duplicated). Baseline 3 is appropriate.

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 updates multiple environment variables for a service in a single operation. It distinguishes from singular update tools (update_service_env) and application variants (bulk_update_application_envs). The specific verb 'Update' and resource 'environment variables for a service' are clearly identified.

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 indicates efficiency for updating many variables at once, implying use cases with multiple env vars. However, it does not explicitly state when not to use or directly contrast with alternatives like update_service_env, though the sibling context provides implicit differentiation.

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