launch_in_cx_programmer

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

Annotations include readOnlyHint=false, destructiveHint=true, and openWorldHint=true. The description adds value by explicitly stating it never performs GUI automation, online edit, PLC download, force-set/reset, or mode changes, which clarifies the scope of its actions. It also implies it saves a file (destructive in the sense of writing) and opens an external application. This goes beyond the annotations by specifying what it does not do, which is useful for an agent to avoid misusing it.

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 concise, with two sentences. The first sentence states the primary action, and the second sentence lists exclusions. It's front-loaded with the main purpose. However, it could be slightly more structured by separating the exclusions into a bullet list, but it's still efficient and easy to parse.

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 tool has 4 parameters, 2 required, and an output schema. The description is short and doesn't explain the parameters or the output. Given the complexity (external application launch, file saving), the description should provide more context about prerequisites (e.g., CX-Programmer must be installed), what happens on success/failure, and the meaning of expected_revision. The output schema exists, so return values are covered, but the description lacks operational details. It's adequate but not complete.

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 0%, so the description must compensate. It mentions 'Save a CXT' and 'open it' but doesn't explain the parameters: project_id, output_path, cx_programmer_exe, and expected_revision. The description doesn't clarify what these parameters mean, their relationships, or any constraints. For example, it doesn't say that output_path is where the CXT is saved, or that cx_programmer_exe is optional to override the default executable path. This is a significant gap given the 0% coverage.

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: 'Save a CXT and open it in locally installed CX-Programmer on Windows.' It identifies the resource (CXT file) and the target application (CX-Programmer), and distinguishes it from siblings by specifying the local Windows environment. However, it doesn't explicitly contrast with sibling tools like save_cxt or load_project, so it's clear but not fully differentiated.

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: it's for saving and opening a CXT in CX-Programmer, and it explicitly lists what it never does (GUI automation, online edit, PLC download, force-set/reset, mode changes). This provides some context for when not to use it, but it doesn't mention alternatives or prerequisites like needing CX-Programmer installed or when to use save_cxt instead. The 'never' list is helpful but not a full usage guideline.

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