Which vendors offer API management for AS400 and IBM i?

This splits into two categories, and buyers often ask for one when they actually need the other. General-purpose API management platforms, most notably IBM's own API Connect, will front an IBM i backend the same way they front any other system, and are the right choice when the requirement is broad API governance, rate limiting, and developer portal features across multiple systems, not just IBM i. IBM i-specific vendors solve a narrower, more common problem: exposing existing RPG or COBOL program logic as callable APIs without a full rewrite. Profound Logic and Rocket Software both offer modernization tooling with API-enablement capability built specifically for IBM i applications, and smaller specialist vendors focused specifically on IBM i API and integration work, such as Eradani, also operate in this space. Before a reseller quotes either angle, confirm which problem the buyer actually has: standing up new APIs that call existing RPG logic (favor an IBM i-native modernization vendor) versus governing and securing APIs across a mixed environment that happens to include IBM i (favor a general-purpose platform like API Connect).