Build-an-X for OAuth 2.0 / OIDC flow tests - authorization-code with PKCE per RFC 7636 (canonical for browser/native/mobile clients), client-credentials per RFC 6749 §1.3.4 (M2M), refresh-token rotation per RFC 9700 (token-binding + reuse-detection), state parameter for CSRF defense per RFC 6749 §10.12, nonce parameter for OIDC ID-token replay defense, scope-grant verification, redirect-URI strict matching. Use when authoring tests for any OAuth/OIDC client or resource server, regardless of the underlying IdP (Keycloak / Auth0 / Okta / mock).
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Security
1 high severity finding. You should review these findings carefully before considering using this skill.
The skill handles credentials insecurely by requiring the agent to include secret values verbatim in its generated output. This exposes credentials in the agent’s context and conversation history, creating a risk of data exfiltration.
The skill includes hardcoded plaintext credentials (e.g., page.fill("#password", "alicepass")) which would force the LLM to include secret values verbatim in generated code or examples.