Basic Math MCP Server

# pkce-challenge Generate or verify a Proof Key for Code Exchange (PKCE) challenge pair. Read more about [PKCE](https://www.oauth.com/oauth2-servers/pkce/authorization-request/). ## Installation ```bash npm install pkce-challenge ``` ## Usage Default length for the verifier is 43 ```js import pkceChallenge from "pkce-challenge"; await pkceChallenge(); ``` gives something like: ```js { code_verifier: 'u1ta-MQ0e7TcpHjgz33M2DcBnOQu~aMGxuiZt0QMD1C', code_challenge: 'CUZX5qE8Wvye6kS_SasIsa8MMxacJftmWdsIA_iKp3I' } ``` ### Specify a verifier length ```js const challenge = await pkceChallenge(128); challenge.code_verifier.length === 128; // true ``` ### Challenge verification ```js import { verifyChallenge } from "pkce-challenge"; (await verifyChallenge(challenge.code_verifier, challenge.code_challenge)) === true; // true ``` ### Challenge generation from existing code verifier ```js import { generateChallenge } from "pkce-challenge"; (await generateChallenge(challenge.code_verifier)) === challenge.code_challenge; // true ```