Text-Toolkit

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 states 'Generate SHA-256 hash' but doesn't explain what this entails—e.g., whether it's a one-way cryptographic hash, if it's deterministic, what the output format is (hexadecimal string?), or any performance considerations. For a cryptographic tool with zero annotation coverage, this is a significant gap in transparency.

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 extremely concise at three words, front-loading the core functionality with zero wasted text. Every word ('Generate', 'SHA-256', 'hash') earns its place by directly contributing to understanding the tool's purpose, making it efficient and well-structured.

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 complexity of a cryptographic hash function, no annotations, no output schema, and low schema coverage, the description is incomplete. It doesn't explain the output (e.g., a hex string), behavioral traits (e.g., deterministic, one-way), or usage context. For a tool that could have security implications, this minimal description is inadequate and leaves too much undefined.

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 1 parameter ('text') with 0% description coverage, so the schema provides no semantic information. The description doesn't mention parameters at all, failing to compensate for the low schema coverage. However, since there's only one parameter and the tool name implies it hashes text, the baseline is 3—adequate but with clear gaps, as it doesn't specify input constraints (e.g., text length, encoding).

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 'Generate SHA-256 hash' clearly states the verb 'Generate' and the resource 'SHA-256 hash', making the purpose immediately understandable. It distinguishes from siblings like generate_md5 or generate_sha1 by specifying the exact hash algorithm. However, it doesn't explicitly mention that it operates on text input, which would make it fully specific.

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 SHA-256 is preferred over other hash functions (e.g., MD5 for speed, SHA-512 for security) or how it differs from sibling tools like generate_hmac. There's no context about use cases such as data integrity checks, password hashing, or cryptographic applications.

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