read_file_content

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

With no annotations provided, the description carries the full burden of behavioral disclosure. It effectively describes key behaviors: it handles 'various text encodings' and provides 'detailed error messages if the file cannot be read.' However, it doesn't mention potential side effects like memory usage for large files or performance implications, which could be relevant for an agent.

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 two sentences that are front-loaded with the core purpose, followed by behavioral details and usage guidance. Every phrase adds value without redundancy, making it efficient and well-structured for quick comprehension.

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's low complexity (single parameter, no output schema, no annotations), the description is largely complete. It covers purpose, behavior, and usage. However, without an output schema, it doesn't describe the return format (e.g., string content, encoding details), which is a minor gap for a read operation.

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 input schema has 100% description coverage, with the 'path' parameter clearly documented as 'The path of the file to read (relative to the workspace directory).' The description adds no additional parameter semantics beyond what the schema provides, so it meets the baseline of 3 for high schema 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 specific action ('Read the complete contents of a file') and resource ('from the workspace filesystem'), distinguishing it from siblings like 'read_multiple_files_content' (single vs. multiple files) and 'write_file_content' (read vs. write). It precisely defines the tool's scope without ambiguity.

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 explicitly states when to use this tool ('when you need to examine the contents of a single file within the workspace'), providing clear context. It implicitly distinguishes from alternatives like 'read_multiple_files_content' (single vs. multiple) and 'list_directory_contents' (content vs. listing), though it doesn't name them directly.

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