Checksso

Checksso is a general term used in software security to describe automated checks that verify the correctness, security, and reliability of Single Sign-On (SSO) configurations and flows. It is not a formal standard or a single product, but a concept adopted in various tooling and CI/CD workflows to ensure SSO integrations remain functional and compliant across identity providers (IdP) and service providers (SP).

The scope of checksso typically covers common SSO protocols and standards such as SAML 2.0, OpenID Connect, and OAuth 2.0. Typical validation areas include metadata exchange, endpoint reachability, certificate validity and rotation, signature and token verification, claims and attribute mappings, audience and issuer validation, and correct handling of nonce, state, and logout flows. Checks may also assess clock synchronization tolerance, certificate trust chains, and revocation status. In addition, checksns often examine configuration drift, permission scopes, and logging/audit traceability to support incident response and governance.

Implementation commonly takes the form of scripts or test suites integrated into development pipelines or security tooling. Outputs are usually structured reports highlighting pass/fail status, root causes, and recommended remediation steps. While useful, checksso cannot replace vendor-specific documentation or operational testing; it complements them by providing repeatable, automated checks that help detect misconfigurations and regressions in SSO deployments.

See also: single sign-on, SAML, OpenID Connect, OAuth 2.0, identity provider, service provider, metadata.