Method

Agents propose · Chrysalis verifies · You ship

One bounded legacy system at a time — closed loop, no vibes in the gate.

The differentiator

A loop that respects production. Not autocomplete. Not autopilot.

01

Agents propose

Discover, document, draft. Refactors, tests, runbooks, migration patches. Always reviewable, always reversible.

02

Chrysalis verifies

Oracle corpus from running PHP estates + deterministic replay against candidates. Nothing ships unless behavior on the new path matches what legacy actually did.

03

You ship

Chimera cutover: parallel-run, traffic-shifted, diff-alarmed, rollback-ready. Zero silent wrong output.

Five stages

One verified path to production — per system.

Every pilot runs these five stages on a single scoped target (today: usually a PHP-heavy slice). Finish the loop, earn cutover, then pick the next system.

  1. 01 · Observe

    Capture real behavior

    Instrument the legacy. Traces, IO, side effects, timing. The truth becomes the oracle.

  2. 02 · Ingest

    Model the legacy

    Agents map call graphs, schemas, data shapes, hot paths. We learn the system before we touch it.

  3. 03 · Emit

    Generate the new

    Translate or rewrite the target slice. Honest partial translation — “holes” are surfaced, not hidden.

  4. 04 · Verify

    Replay the oracle

    The recorded corpus runs through the new code. CI gate. No green, no merge. Period.

  5. 05 · Deploy / Chimera

    Parallel-run cutover

    Traffic mirroring, behavioral diff alarms, instant rollback. Old and new run side-by-side until trust is earned.

See public vs private proof →