hash_sha512

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

No annotations are present, so the description must carry full burden for behavioral disclosure. It fails entirely: no mention that SHA-512 is a cryptographic, one-way, deterministic hash with fixed 512-bit output. No details about security, speed, or side effects. The description contradicts no annotations but is extremely deficient.

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?

Extremely concise at only three words, but this is under-specification, not effective conciseness. Important information is missing. A tool description should earn its sentences, but here the single sentence fails to provide minimum utility.

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 is part of a large family of 22 hash functions, the description provides no context to differentiate SHA-512 from siblings. No mention of output format, return value (though output schema exists), or any distinguishing characteristics. Incomplete for an AI agent to select 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 0%, and the description adds no information about the two parameters ('data' and 'usedforsecurity'). The agent must infer meaning from parameter names alone. A helpful description would explain the role of each parameter, especially 'usedforsecurity' which has a default and is non-obvious.

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 states 'Compute SHA512 hash', which identifies the specific algorithm and action. However, it's minimal and doesn't reinforce the purpose beyond the name. It distinguishes from siblings like hash_md5 or hash_sha256 by naming SHA512, but could be clearer by specifying it computes a cryptographic hash of input data.

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 provided on when to use SHA-512 versus other hash functions in the sibling list. The description lacks any context about appropriate use cases, prerequisites, or alternatives. This is critical given the large family of similar tools.

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