Execute Environment Change

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

Beyond the destructiveHint annotation, the description explicitly discloses concrete side effects: applying safety locks to control.json, switching the active connection port in config.json, and automatic reconnection on the next tool call. This gives the agent a strong mental model of what executing this tool will do.

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 sentences, front-loaded purpose, and no filler. Every sentence adds essential information about prerequisites, side effects, or postconditions.

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?

The description covers prerequisites, exact file changes, and reconnection behavior, and an output schema exists so return values do not need explanation. The main gap is the unexplained target_env parameter, which is required and could prevent correct invocation without additional 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?

The description gives meaningful semantics for approval_id by telling the agent to source it from ibkr_request_environment_change. However, target_env is completely undocumented in both the schema and the description; with 0% schema description coverage, the description should have clarified what target_env values look like or where they come from.

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 a specific action ('Apply an approved environment change') and names the exact resources affected (control.json and config.json). This distinguishes it from the sibling request_environment_change tool, which is about requesting rather than executing.

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?

It gives clear context by requiring an approval_id from ibkr_request_environment_change, implying this should be used only after approval. It does not explicitly list when-not-to-use cases or name alternatives, but the approved-change framing is enough for correct routing.

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