# Data Model: FDC3 Intent Interoperability on C3

> For the complete documentation index, see [llms.txt](https://deploy-preview-472--lucky-concha-f3599f.netlify.app/llms.txt).

## Scope

State `014` introduces frontend interoperability data shapes. No persistent database schema changes are required.

## Entity Changes

### Added (frontend/domain models)

*   `Fdc3InstrumentContext`
    *   Source of truth for outbound/inbound symbol context.
    *   Required fields: `type`, `id.ticker`.
    *   Optional fields: `id.ISIN`, `id.FIGI`, `id.RIC`, `name`.
*   `InteropCapabilityState`
    *   Tracks whether DesktopAgent is available and which intents/features are enabled.
*   `TicketLaunchIntentPayload`
    *   Normalized payload model for custom ticket-launch intents.

### Changed

*   Trade/order/position view models gain mapping to/from `Fdc3InstrumentContext` through shared utility methods.

### Removed

*   None.

## Persistence Impact

*   No SQL/table/entity persistence changes.
*   No migration scripts required.

## Compatibility Notes

*   Existing API payloads remain unchanged.
*   Interop models are additive and local to frontend orchestration.