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crypto_whirlpool

Read-onlyIdempotent

Compute the 512-bit Whirlpool hash of a text string to verify file integrity or generate digital signatures. Returns hex digest and multiple bit-length truncations.

Instructions

Whirlpool Hash Generator. Compute the 512-bit Whirlpool hash of a text string, returning the 128-character hex digest plus uppercase, byte length, and 128/256/384/512-bit truncations. Use crypto_hash instead for MD5/SHA-1/SHA-256/SHA-512, crypto_sha3 for SHA-3/Keccak, or crypto_ripemd for RIPEMD variants; Whirlpool is an ISO/IEC 10118-3 AES-based digest used for file integrity and digital signatures. Runs locally on the input you provide: read-only, non-destructive, deterministic, contacts no external service, and is rate-limited (5 requests/min anonymous).

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault
textYesData to hash. Interpreted according to encoding: as a UTF-8 string when text, or decoded from a hex/base64 string first. The empty string is valid.
encodingNoHow to interpret text before hashing: text (UTF-8, default), hex (decode hex first; rejected if not valid hex), or base64 (decode base64 first; rejected if invalid).text

Output Schema

TableJSON Schema
NameRequiredDescriptionDefault
hashNoLowercase 128-character hex Whirlpool (512-bit) digest.
algorithmNoAlways "whirlpool".
lengthNoDigest length in bytes (64).
encodingNoThe input encoding that was applied (text, hex, or base64).
uppercaseNoThe same digest in uppercase hex.
truncatedNoLeading-bit truncations of the hex digest for use as shorter checksums.
Behavior5/5

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

The description adds behavioral context beyond annotations: local execution, read-only, non-destructive, deterministic, no external service, and rate-limited (5 req/min). No contradiction with annotations.

Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.

Conciseness5/5

Is the description appropriately sized, front-loaded, and free of redundancy?

The description is a single well-structured paragraph with no wasted words: starts with title, outputs, alternatives, properties, and safety features.

Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.

Completeness5/5

Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?

Given the output schema exists, the description adequately covers return values (hex digest, uppercase, byte length, truncations) and explains safety and rate limiting. Complete for a hashing tool.

Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.

Parameters3/5

Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?

Schema coverage is 100%, so baseline is 3. The description mentions 'text string' and 'byte length' but adds little beyond schema's descriptions of 'text' and 'encoding' parameters.

Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.

Purpose5/5

Does the description clearly state what the tool does and how it differs from similar tools?

The description explicitly states it is a Whirlpool hash generator, specifies the output (128-character hex digest, uppercase, byte length, truncations), and distinguishes from siblings like crypto_hash and crypto_sha3.

Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.

Usage Guidelines5/5

Does the description explain when to use this tool, when not to, or what alternatives exist?

The description provides explicit guidance: use crypto_hash for MD5/SHA-1/SHA-256/SHA-512, crypto_sha3 for SHA-3/Keccak, crypto_ripemd for RIPEMD, and notes Whirlpool is for file integrity and digital signatures.

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

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