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

No annotations are provided, so the description carries the full behavioral burden. It usefully discloses determinism, UTF-8 input handling, implementation details (Web Crypto / pure-JS MD5), and an x402 price, but it does not explain the return format (e.g., hex vs base64) or error behavior.

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 front-loaded with the core action, then adds determinism and pricing in compact form. Every element earns its place, and there is no redundant restatement of the tool name or schema.

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 low-complexity two-parameter tool, the description covers algorithms and determinism but omits the output digest format. With no output schema and no annotations, that missing detail leaves a noticeable gap for an agent that needs to consume the result correctly.

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%, but the schema itself only labels the parameters as 'Algorithm' and 'Text'. The description adds meaningful context by specifying UTF-8 text and grouping the algorithm choices into SHA-family and legacy MD5 use cases, which goes beyond the bare enum.

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 gives a specific verb and resource: compute exact hash digests of UTF-8 text. It names the supported algorithm families (SHA via Web Crypto, MD5 for legacy checksums), which distinguishes it clearly from sibling tools like base64_encode or uuid.

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?

It states what the tool does but gives no explicit when-to-use or when-not-to-use guidance. There is no mention of alternatives or scenarios where hashing is preferred over related dev utilities, leaving selection entirely to the agent's inference.

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