Heirapi builds custom API layers that connect contemporary corporate systems to the mainframe architectures they still depend on. We handle protocol translation, session management, and security so your teams can stop wrestling with proprietary interfaces and start moving data where it needs to go.
Integration milestones
Each phase of a Heirapi engagement is mapped to a concrete outcome. We start with protocol discovery and finish with a monitored bridge your operations team can run without us on call.
Phase 01 — Discovery & protocol audit
Phase 02 — Bridge architecture design
Phase 03 — Custom API layer build
Phase 04 — Hardening & load testing
Phase 05 — Production cutover
Most bridge projects land between six and fourteen weeks. The range depends on how many mainframe subsystems you expose, the state of your existing documentation, and whether we need to build protocol translators from scratch or can reuse a library we already maintain. We start with a two-week discovery sprint that produces a concrete timeline before any code is written.
No, because the bridge sits outside the mainframe and manages its own connection pool. We cap concurrent sessions and queue requests during peak batch windows, so your nightly jobs keep their priority. In practice, clients see response times between 80 and 250 milliseconds for typical record lookups, with no measurable impact on existing workloads.
Every bridge runs mutual TLS between the API layer and your corporate network, plus OAuth2 client credentials for service-to-service calls. Mainframe credentials are stored in a vault and rotated on a schedule you define. We also add field-level encryption for sensitive payloads and a full audit log that records every request on both sides of the connection.
Yes. We coordinate directly with your mainframe team or their vendor during the discovery phase. Our adapters support common protocols like CICS, IMS, and VSAM, and we document every assumption we make about your environment so nothing is left implicit. If your vendor has specific change windows, we plan deployments around them.
We stay for a two-week hypercare period where our engineers monitor traffic, tune connection pools, and fix anything that surfaces under real load. After that you get the support desk with defined response times and a quarterly review of bridge health. Most clients extend the arrangement once they see the usage patterns.
Straight answers about timelines, security, and what happens after the bridge is live. If your question is not here, reach out through the contact page and we will respond within one business day.
Ready to open a secure channel between your corporate network and the mainframe systems that still run your core operations?
We map your existing architecture, identify the legacy endpoints worth exposing, and outline the API layer that fits your security posture. No generic proposals, just a concrete integration path for your environment.
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