FieldRook – a local-first Windows troubleshooting workstation
ROOKWELD has released FieldRook 0.6.0-rc.1, a native Windows application that helps technicians investigate system issues using evidence rather than guesswork.
FieldRook is a native Windows workstation for technicians who need to diagnose and resolve problems with concrete evidence. The new version, 0.6.0-rc.1, shifts the focus from general troubleshooting to a structured, evidence-driven investigation workflow.
The application is built as a single Windows window using WPF and WebView2, embedding a React interface and a local FastAPI server. This design ensures a cohesive desktop experience rather than managing separate browser tabs and backend processes.
A key feature of the new release is the Field Kit, a modular, context-aware toolbox on the right side of the interface. This dock includes the Evidence Lens and Network Lab, which are now available in the published pre-release.
Evidence Lens and Network Lab
The Evidence Lens tool allows technicians to perform deterministic before-and-after comparisons of persisted evidence. It can cite contradictions and export linked data, providing a clear record of changes over time.
The Network Lab is a read-only instrument that inspects network adapters, addresses, DNS configuration, and runs resolution tests. It includes a remote-target guard to ensure that re-checks are performed on the intended machine.
Both tools are designed with bounded diagnostics and clear local-versus-remote behavior. They require consent for re-checks and are not included in the earlier v0.5.0 binaries.
Safety and local-first processing
FieldRook is built on a philosophy of safety, making certain operations harder to perform by accident. The application defaults to read-only operations and uses registered capabilities rather than arbitrary model-authored commands.
The portable Collector is a separate Windows executable that gathers selected read-only diagnostics with consent. It creates a package that FieldRook can validate and import, but it does not give FieldRook remote command execution capabilities.
Target-aware evidence ensures that Collector imports are tied to the affected computer. Mismatched identities are not silently mixed, and a remote reading cannot be rechecked against the operator's own PC.
The packaged service binds to loopback and uses application-owned local storage. Cloud-provider use requires deliberate configuration and consent, and diagnostic data is not automatically transmitted elsewhere.
Human control over AI suggestions
The AI in FieldRook is an assistant to the technician, not an unrestricted shell or a source of invented facts. Corrective actions require explicit approval and a registered execution path.
An intervention being attempted or reported does not mean the problem was resolved. The workstation helps technicians document outcomes and export a case report, ensuring that a resolution is actually verified.
Model explanations and confidence language never replace measured evidence. The interface is designed to help technicians observe, confirm, or supply new evidence at each step of the investigation.
Development and validation
FieldRook was developed as part of the Meta Global AI Developer Hackathon 2026. The project is independent, and participation is not an endorsement by Meta.
The current release candidate, v0.6.0-rc.1, is a pre-release build and not a stable or independently certified version. It includes the Field Kit dock, Evidence Lens, and Network Lab, but does not include a new, separately packaged Collector download.
Validation is ongoing, with known limits including unsigned-binary reputation and antivirus behavior across vendors, Windows machines without WebView2, and multi-machine field trials. The records show local release-candidate validation results, not a claim that every user environment has been certified.
Getting started
Users can download the portable Windows desktop app from the repository. The binaries are unsigned, and the published checksums should be verified before running.
On first launch, users must configure the desired inference mode. Windows 10/11 x64 and WebView2 Runtime are required, and no model is bundled by default.
The earlier v0.5.0 release is retained for reference and includes the FieldRook-0.5.0.zip and FieldRook-Collector-0.5.0.zip packages. Cross-version Collector compatibility has not been certified, so users should not assume the older Collector is validated with v0.6.0-rc.1.
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