Code Editor MCP Server

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

No annotations are provided, so the description carries the full burden of behavioral disclosure. It mentions parameters like 'error_handling' and 'mismatch_policy' which hint at behavior, but doesn't explain what these mean in practice (e.g., what 'warn-skip' does, whether files are modified in-place, or if backups are created). For a mutation tool with zero annotation coverage, this leaves significant gaps in understanding its effects.

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 appropriately sized and front-loaded: the first sentence states the purpose, followed by a structured 'Args' section. Each sentence earns its place by introducing parameters, though some could be more informative. It avoids redundancy and is efficiently organized.

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 5 parameters with 0% schema coverage and an output schema (which reduces the need to explain return values), the description is moderately complete. It covers all parameters briefly but lacks details on behavioral traits (e.g., mutation effects, error handling specifics). For a file conversion tool with no annotations, it should do more to explain operational context and risks.

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 lists all 5 parameters with brief explanations (e.g., 'List of absolute file paths'), adding meaning beyond the schema's titles. However, it doesn't provide detailed semantics (e.g., format of encodings, what 'mismatch' refers to), leaving some ambiguity. The description adds value but doesn't fully compensate for the coverage gap.

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's purpose: converting files between specific encodings (utf-8, gbk, gb2312). It uses a specific verb ('convert') and identifies the resource ('files'), but doesn't explicitly differentiate from sibling tools like 'edit_block' or 'file_ops' which might also manipulate files. The purpose is clear but lacks sibling differentiation.

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 provides no guidance on when to use this tool versus alternatives. It doesn't mention sibling tools like 'edit_block' or 'file_ops', nor does it specify prerequisites (e.g., file existence, permissions) or contextual triggers (e.g., when encoding issues arise). Usage is implied by the purpose but not explicitly stated.

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