The Engineering OS that shows its work.

ZylCode is being built to turn software-development instructions into verifiable engineering work. It brings together repository intelligence, approval-gated execution, and an evidence ledger designed to make engineering actions and results easier to inspect.

Built in public by Zylvex Technologies Limited, ZylCode maintains a capability registry that distinguishes implemented functionality, partial implementations, planned work, and capabilities awaiting independent acceptance.

Join the Developer Preview waitlist

The initial Developer Preview is planned as a free, invite-only release. Join the waitlist to receive an email when preview access becomes available. Signing up does not guarantee immediate access or require a purchase.

What works today

WORKING Agent workflow: prompt processing, repository-context retrieval, planning, approval-gated tool execution, and recording of execution evidence.
WORKING Repository intelligence: symbol and dependency navigation, typed query methods, and index-freshness reporting through supported interfaces.
WORKING Factory and agent workflows: durable task graphs, human-approval gates, and persisted claims, with blocked gates remaining blocked.
WORKING Provider routing: configured provider routing and failover, with users supplying provider credentials where supported.
LIMITED Platform installers: local installer builds are configured for supported platforms. Installers are not yet signed, and operating-system security warnings may appear.

These descriptions reflect the documented development state. Consult the capability registry for the current status and supporting evidence of individual capabilities.

What is not ready yet

NOT IMPLEMENTED Computer-use automation: computer-use functionality is currently simulated. The application does not actually control your screen.
AWAITING REVIEW Independent acceptance: some previously reported intelligence capabilities still require independent re-acceptance. The capability registry identifies claims awaiting that review.
NOT YET AVAILABLE Commercial release: pricing and paid plans have not been announced. The initial Developer Preview is intended to be free and invite-only.

Evidence, verification and transparency

ZylCode publishes a capability registry documenting the status of its capabilities and linking to supporting evidence where available.

Implementation, automated test coverage, and independent acceptance are different stages of verification. A passing test does not, by itself, establish independent acceptance.

The evidence ledger uses hash chaining to help detect changes to recorded evidence. A corrupted chain is treated as an error, not as an empty ledger.

Explore the public capability registry →

ZylCode is pre-release software. Capability descriptions reflect the documented development state and are not guarantees of production readiness, security certification, or suitability for every environment.