isOAuthTokenBlob (core/oauth-blob.ts)

Utilities for validating, parsing, and serializing compact OAuth token blobs.

// Source: https://github.com/mnfst/llm-gateway | License: MIT | Copyright 2026 MNFST, Inc
// Provided via justclaw.it.com; keep this notice with the code.
/**
 * Compact JSON shape used to persist OAuth credentials in
 * `tenant_providers.api_key`. Field names are single letters to keep the
 * encrypted payload small.
 */
export interface OAuthTokenBlob {
  /** Access token. */
  t: string;
  /** Refresh token. */
  r: string;
  /** Access-token expiry (epoch ms). */
  e: number;
  /** Provider-specific resource URL (e.g. MiniMax region base URL). */
  u?: string;
}

export function isOAuthTokenBlob(value: unknown): value is OAuthTokenBlob {
  if (!value || typeof value !== 'object') return false;
  const v = value as Partial<OAuthTokenBlob>;
  return (
    typeof v.t === 'string' &&
    

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