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Jambozx

OnlineCyberTools MCP (280+ filterable tools)

encoding_decoding_hex_ascii

Read-onlyIdempotent

Convert hex strings to ASCII text or encode text to hex. Support spaced, continuous, or custom separators, uppercase/lowercase, and ASCII/Latin1/UTF8 encoding.

Instructions

Hex to ASCII Converter (Bidirectional). Convert hexadecimal strings to ASCII/text and text back to hex, with selectable byte delimiter (spaced, continuous, or custom separator), upper/lowercase hex, and character encoding (ascii, latin1, utf8). Use conversion_number_base for multi-radix ASCII/binary/hex/octal/decimal byte conversion, encoding_decoding_binary_text for the binary representation of text, or encoding_decoding_base64 for MIME-safe binary transport. Runs locally on the input you provide: read-only, non-destructive, contacts no external service, and is rate-limited (60 requests/minute for anonymous callers). Returns the converted string plus hex pairs, byte values, and a statistics block (length, byte count, entropy, printable ratio, character range).

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault
operationYesDirection of conversion. "hex_to_ascii" decodes hex into text; "ascii_to_hex" encodes text into hex.hex_to_ascii
inputYesData to convert: a hex string when operation is "hex_to_ascii", or plaintext when "ascii_to_hex". Must not be empty.
formatNoHex byte layout. "spaced" separates pairs with a single space; "continuous" emits unbroken hex; "custom_separator" uses the separator field.spaced
separatorNoDelimiter between hex pairs. Only used when format is "custom_separator" (for example "0x" or backslash-x).
caseNoLetter case of emitted hex digits. Applies only to "ascii_to_hex".lowercase
encodingNoCharacter encoding used to map bytes to characters. "ascii" rejects bytes above 127; "latin1" allows 0-255; "utf8" decodes multi-byte sequences.ascii

Output Schema

TableJSON Schema
NameRequiredDescriptionDefault
successNoWhether the conversion succeeded.
operationNoThe operation performed ("hex_to_ascii" or "ascii_to_hex").
inputNoThe submitted input, echoed back.
outputNoThe converted result: ASCII/text when decoding, a hex string when encoding.
formatNoThe hex layout that was applied.
encodingNoThe character encoding that was applied.
hex_pairsNoThe individual two-character hex bytes produced or parsed.
byte_valuesNoDecimal byte values (present only for "hex_to_ascii").
analysisNoStatistics about the converted data.
Behavior5/5

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

Annotations already declare readOnlyHint, destructiveHint, idempotentHint. Description adds context: 'Runs locally on the input you provide: read-only, non-destructive, contacts no external service, and is rate-limited.' No contradiction.

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

Conciseness4/5

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

Description is front-loaded and concise, with four sentences covering function, features, alternatives, and safety. Each sentence adds value, though slightly more structure could improve readability.

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 tool complexity (6 params, output schema exists), the description adequately covers input, options, safety, and usage guidance. No gaps identified.

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% for 6 parameters. Description summarizes parameter choices (delimiter formats, case, encoding) but does not add significant meaning beyond schema descriptions. Baseline 3 is appropriate.

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 'Hex to ASCII Converter (Bidirectional)' and details the conversion between hex and text with options. It distinguishes itself from siblings like conversion_number_base, encoding_decoding_binary_text, and encoding_decoding_base64.

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?

Description explicitly names alternative tools for different use cases: conversion_number_base for multi-radix, encoding_decoding_binary_text for binary representation, encoding_decoding_base64 for MIME-safe transport. It also notes local execution and rate limits.

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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