devutils-mcp-server

generate_random_hex

Generate a random hexadecimal string from a specified number of bytes, outputting twice the byte length in hex characters.

Instructions

Generate a random hexadecimal string of the specified byte length.

Tool call template

This tool declares no required parameters. Add optional parameters from the input schema as needed.

{
  "id": 1,
  "jsonrpc": "2.0",
  "method": "tools/call",
  "params": {
    "arguments": {},
    "name": "generate_random_hex"
  }
}

Input Schema

Name	Required	Description	Default
`bytes`	No	Number of random bytes (output will be 2x this length in hex)

Schema Changelog

Changes observed during successful MCP inspections.

First observedv0.1.0Mar 24, 2026

TDQS

A3.6/5.0

Behavior2/5

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

No annotations are provided, and the description does not disclose important behavioral traits like cryptographic randomness, potential side effects, or performance characteristics. The description is minimal and relies on the name.

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, concise sentence with no unnecessary words. It front-loads the action and resource.

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

Completeness4/5

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

For a simple one-parameter tool, the description sufficiently explains the action and the key parameter. It could mention randomness quality or typical use cases, but overall is acceptable.

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?

The schema covers the bytes parameter with 100% coverage, including the relationship to output length. The description adds no additional semantic value beyond what the schema already provides.

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 clearly states the tool generates a random hexadecimal string with specified byte length, using a specific verb and resource. It is distinct from siblings like generate_uuid or generate_password.

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

Usage Guidelines3/5

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

No explicit guidance is given on when to use this tool versus alternatives such as generate_uuid or generate_nanoid. The purpose is clear but no exclusions or recommendations are provided.

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