Reverse Text
reverse_textRead-onlyIdempotent
Reverse text character-by-character or word-by-word, with palindrome detection. Use this tool to transform text order for analysis or creative purposes.
Instructions
Reverse text character-by-character or word-by-word.
Also detects if the text is a palindrome.
Args:
text (string): The text to reverse
reverse_words_only (boolean): Reverse word order only, not characters (default: false)
Returns: Reversed text, palindrome detection.
Example: reverse_text("hello") → "olleh"; reverse_text("racecar") → "racecar" (palindrome!)
Input Schema
TableJSON Schema
| Name | Required | Description | Default |
|---|---|---|---|
| text | Yes | The text to reverse | |
| reverse_words_only | No | Reverse word order only |
Implementation Reference
- src/tools/spelling.ts:215-242 (handler)The core handler function implementing the reverse_text tool logic: reverses text character-by-character or word-by-word, detects palindromes, and provides descriptive output.
export function reverseText(input: ReverseTextInput): ReverseTextOutput { const { text, reverse_words_only } = input; let reversed: string; if (reverse_words_only) { // Reverse order of words but keep each word's characters in order reversed = text.split(/(\s+)/).reverse().join(''); } else { // Reverse all characters reversed = [...text].reverse().join(''); } const normalizedOriginal = text.toLowerCase().replace(/[^a-z0-9]/g, ''); const normalizedReversed = [...normalizedOriginal].reverse().join(''); const is_palindrome = normalizedOriginal === normalizedReversed && normalizedOriginal.length > 0; const description = reverse_words_only ? `Words reversed: "${text}" → "${reversed}"` : `Characters reversed: "${text}" → "${reversed}"${is_palindrome ? ' (This is a palindrome!)' : ''}`; return { original: text, reversed, reverse_words_only, is_palindrome, description, }; } - src/tools/spelling.ts:202-213 (schema)TypeScript interfaces defining the input (text and reverse_words_only option) and output (reversed text, palindrome check, description) types for the reverseText handler.
export interface ReverseTextInput { text: string; reverse_words_only: boolean; } export interface ReverseTextOutput { original: string; reversed: string; reverse_words_only: boolean; is_palindrome: boolean; description: string; } - src/index.ts:341-371 (registration)MCP server registration of the 'reverse_text' tool, including Zod input schema validation, description, annotations, and wrapper calling the reverseText handler.
server.registerTool( "reverse_text", { title: "Reverse Text", description: `Reverse text character-by-character or word-by-word. Also detects if the text is a palindrome. Args: - text (string): The text to reverse - reverse_words_only (boolean): Reverse word order only, not characters (default: false) Returns: Reversed text, palindrome detection. Example: reverse_text("hello") → "olleh"; reverse_text("racecar") → "racecar" (palindrome!)`, inputSchema: z.object({ text: z.string().min(1).describe("The text to reverse"), reverse_words_only: z.boolean().default(false).describe("Reverse word order only"), }).strict(), annotations: { readOnlyHint: true, destructiveHint: false, idempotentHint: true, openWorldHint: false }, }, async (params) => { const result = reverseText({ text: params.text, reverse_words_only: params.reverse_words_only, }); return { content: [{ type: "text" as const, text: result.description }], }; } ); - src/index.ts:356-359 (schema)Zod runtime input schema for the reverse_text tool registration, validating text (non-empty string) and reverse_words_only (boolean, default false).
inputSchema: z.object({ text: z.string().min(1).describe("The text to reverse"), reverse_words_only: z.boolean().default(false).describe("Reverse word order only"), }).strict(),