Kernel MCP Server

export function isValidJwtFormat(token: string): boolean { return ( token.split(".").length === 3 && token.split(".").every((part) => part.length > 0) ); } /** * Normalizes 127.0.0.1 to localhost in a URI. * This is needed because Vercel's edge network normalizes 127.0.0.1 to localhost * in query parameters. To ensure the redirect_uri matches during token exchange, * we need to apply the same normalization to POST body parameters. */ export function normalizeLocalhostUri(uri: string): string { try { const url = new URL(uri); if (url.hostname === "127.0.0.1") { url.hostname = "localhost"; return url.toString(); } return uri; } catch { return uri; } } /** * Expands localhost URIs to include both localhost and 127.0.0.1 variants. * This is needed because Vercel's edge network normalizes 127.0.0.1 to localhost * in query parameters, so we need to register both variants with Clerk. */ export function expandLocalhostUris(uris: string[]): string[] { const expanded = new Set<string>(); for (const uri of uris) { expanded.add(uri); try { const url = new URL(uri); if (url.hostname === "localhost") { url.hostname = "127.0.0.1"; expanded.add(url.toString()); } else if (url.hostname === "127.0.0.1") { url.hostname = "localhost"; expanded.add(url.toString()); } } catch { // If URL parsing fails, just keep the original } } return Array.from(expanded); }