oauth▌

Identifying and exploiting OAuth 2.0 and OpenID Connect misconfigurations including redirect URI manipulation, token leakage, and authorization code theft during security assessments.

Detects and responds to OAuth token theft and replay attacks in cloud environments, focusing on Microsoft Entra ID (Azure AD) token protection, conditional access policies, and sign-in anomaly detection. Covers access token theft, refresh token replay, Primary Refresh Token (PRT) abuse, and pass-the-cookie attacks. Activates for requests involving OAuth token theft detection, token replay prevention, Azure AD conditional access token protection, or cloud identity attack investigation.

Authenticate a user session against Xero — either via OAuth 2.0 / OIDC (recommended, supported) or as a fallback by scripting the password form at login.xero.com/identity/user/login. Documents the canonical URL, form schema, anti-bot stack (Akamai + browsercheck + AspNetCore antiforgery), and all five branch outcomes (MFA, SSO, passkey, lockout, invalid credentials).

OAuth authentication for MCP servers on Cloudflare Workers with Google Sign-In and Dynamic Client Registration. \n \n Implements dual OAuth role pattern: MCP server acts as both OAuth client (to Google) and OAuth server (to MCP clients like Claude.ai), issuing its own tokens after upstream authentication \n Includes production-ready security: CSRF protection via HttpOnly cookies, one-time-use state tokens with 10-minute TTL, session binding via SHA-256 hashing, and HMAC-signed approval cookies t

Implement industry-standard OAuth 2.0 and OpenID Connect authentication flows with JWT tokens, refresh tokens, and secure session management.

Use this skill when you need to:

OAuth 2.0 authentication for GitHub and Microsoft Entra in edge runtimes without MSAL. \n \n Covers GitHub OAuth quirks: required User-Agent header, private email handling via /user/emails endpoint, and form-encoded token responses \n Microsoft Entra setup for Cloudflare Workers using manual OAuth flow and JWT validation with jose , including tenant configuration and scope requirements \n Token lifetime management: GitHub tokens don't expire, Microsoft access tokens last 60-90 minutes with optio