read_file

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

The readOnlyHint annotation already conveys that this is a safe, non-destructive read, and the description adds useful context about the file location and bounded/UTF-8 constraints. However, it does not disclose what happens when max_bytes is exceeded, whether the file must exist, or how errors are reported. The description adds some behavioral context but leaves important edge-case behavior undocumented.

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 entire description is one sentence with no filler, and it front-loads the key action and object. Every word contributes meaning, and the qualifiers are relevant to correct invocation. This is a model of concise, efficient tool description.

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?

For a simple two-parameter read operation, the description is mostly adequate, but it omits return-value behavior and edge cases such as oversized files, missing files, or path conventions. With no output schema and 0% parameter-schema coverage, the description should have provided a bit more operational detail to be fully 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 carry the burden of explaining parameters. 'Bounded' loosely hints at max_bytes, but the description never explicitly explains that name identifies the file path or how max_bytes caps the read. An agent can guess from the parameter names, but the description adds little beyond the schema's own labels.

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 specifies the action (read), the resource (a file), and the location (NXT user flash), making it easy to distinguish from sibling tools like delete_file, list_files, and write_file. The qualifiers 'bounded' and 'UTF-8-compatible' add precise scope. This is a strong, unambiguous purpose statement.

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?

No guidance is given about when to use this tool versus alternatives, such as list_files for enumerating files or write_file for creating files. The description implies reading, but it never states exclusions or directs the agent to a sibling when appropriate. An agent must infer usage entirely from sibling names.

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