Invoker MCP Server

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

Annotations indicate readOnlyHint=false, consistent with the 'Create' action implying a mutation. The description adds that variables are optional, which is useful context beyond annotations. However, it lacks details on permissions, side effects (e.g., if environment names must be unique), or error conditions, leaving behavioral gaps.

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 a single, efficient sentence that front-loads the core purpose ('Create a new environment') and adds a concise qualifier ('with optional initial variables'). Every word earns its place with no redundancy or unnecessary elaboration.

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 creation tool with no output schema and minimal annotations, the description is adequate but incomplete. It covers the basic action and optional parameters, but lacks information on return values, error handling, or dependencies with sibling tools, leaving the agent with gaps in understanding the full context.

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%, with clear descriptions for both parameters in the schema itself. The description mentions 'optional initial variables', aligning with the schema but not adding significant meaning beyond it. No additional syntax, constraints, or examples are provided in the description.

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 action ('Create') and resource ('new environment'), with the optional 'initial variables' providing specific detail about what can be configured. It distinguishes from siblings like 'invoker_list_environments' (list vs create) and 'invoker_set_variable' (set variable vs create environment with variables), though not explicitly named.

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 implies usage for creating environments, but provides no explicit guidance on when to use this versus alternatives like 'invoker_switch_environment' or 'invoker_set_variable', nor any prerequisites or constraints. The optional nature of variables is mentioned, but no broader context is given.

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