PingFederate Custom ID-JAG Implementation Validated Across 27 Live HTTP Checks

A custom ID-JAG plugin for PingFederate version 12.3.3.1 was tested across four distinct layers, including 26 Java offline checks, 24 Node client tests, four Terraform configuration tests, and 27 live HTTP checks against running token and JWKS endpoints. The live runner was the only layer to confirm that the installed plugin, configured policies, client authentication, request mappings, and managed signing keys all worked together on an actual server. Positive exchange checks verified that responses used the correct ID-JAG token-type URI, a valid JWS signature, expected algorithm, issuer, audience, scope, and a lifetime capped at 300 seconds. The test setup relies on a locally generated subject-signing key and client secrets stored in an ignored directory, deliberately isolated from any real identity provider or downstream domain. The article, the fourth in a series, emphasizes that a successful token response alone is insufficient proof and that independent signature verification and Terraform configuration consistency are equally essential.