Xcode MCP Server

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

With no annotations provided, the description carries full burden for behavioral disclosure. It states the tool reads and parses a file, implying a read-only operation, but doesn't clarify permissions needed, error handling (e.g., for invalid paths), performance characteristics, or format of the returned structure. While it mentions the return content, it lacks details on depth, pagination, or data format, 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 highly concise and well-structured in two sentences: the first states the action and resource, the second specifies the return value. Every word earns its place with no redundancy or fluff, making it easy to parse quickly.

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 the tool has one parameter with full schema coverage and no output schema, the description is minimally adequate. It covers the basic purpose and return content, but for a tool with no annotations, it should provide more behavioral context (e.g., error cases, permissions). The lack of usage guidelines and limited transparency reduces completeness, though the simple parameter schema mitigates this somewhat.

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 the single parameter 'projectPath' well-described in the schema as 'Path to the .xcodeproj directory'. The description adds no additional parameter semantics beyond implying the tool operates on Xcode project files, which is already clear from the tool name and schema. Baseline 3 is appropriate as the schema does the heavy lifting.

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 with specific verbs ('read and parse') and resource ('.xcodeproj file'), and identifies the returned information (project structure including targets, build configurations, source files). It distinguishes from siblings like 'list-projects' (which likely lists multiple projects) by focusing on reading/parsing a single project file. However, it doesn't explicitly contrast with 'list-targets' or 'list-schemes' which might retrieve subsets of the same information.

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 when to choose 'read-project' over 'list-targets' or 'list-schemes' for getting target/scheme information, nor does it specify prerequisites or context for usage. The agent must infer usage from the purpose alone.

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