Wyvern 0.7.0

OS-native webview CLI for structured JSON dialog results

  • By Rand Lee
  • Open Source
  • Updated Oct 8, 2026
Download for Windows

About Wyvern

Wyvern (*What You View, Engine Renders Natively*) opens OS-native webview windows for user interaction and returns structured JSON results. JSON in, JSON out — MCP-compatible from the ground up.

What's new in 0.7.0

wyvern v0.7.0 — sc-lint boundaries, observability v2, atm-core Send-To picker
Released: October 8, 2026 · Install: cargo install wyvern-cli --version 0.7.0 (Rust), or download native binaries for macOS, Windows, Linux from releases
Changelog · Release notes
Agent Orchestrator (Send-To / atm-core)
As an agent orchestrator wiring atm-core Send-To, I want a documented Wyvern picker contract with CI that catches wire drift, so optional native pickers stay aligned with atm-core releases.
v0.7.0 ships the atm-pick-member wizard example — the canonical HTML/JS page atm-core vendors for optional Wyvern pickers — plus CI that pins atm-core v1.6.1 fixtures, hash-checks contract bytes, runs atm-core Send-To surface tests, and probes a real wyvern build. The CLI surface is unchanged: PickerInput still travels as wizard config, and callers read WizardResult.data as PickerOutput.
Maintainer / release engineer
As a maintainer, I want sc-lint boundary enforcement and kit-managed releases to stay green, so quality gates match the rest of the org.
This minor release lands sc-lint 0.5.0 across Wyvern boundaries and CI (including consumer bootstrap lanes and extended analyzers) and migrates the binary logger to sc-observability v2. No breaking changes to dialog JSON schemas or host IPC for integrators on 0.6.x.
What's Next
Follow kit release flow on main after merge: release-candidate-v0.7.0 → preflight → production dispatch. Advance release/atm-core-send-to-pin.toml together with any PickerInput/PickerOutput schema change.
What's Changed
- feat(phase-J-j1): vendor sc-publish kit and publish contract by @randlee in #138
- feat(phase-J-j2): kit secrets docs and vendor CR-001/002 fixes by @randlee in #142
- fix(phase-J-j2): revert sc-publish fork; restore upstream pin 43552e4 by @rand-lee in #143
- fix(phase-J): org-qualified kit pin + isolated sync cache by @randlee in #145
- chore(phase-J): re-pin sc-publish kit to org blessed 25668ec by @randlee in #146
- chore(phase-J): j.4 closeout — release records + integrate sync by @randlee in #151
- site: announce wyvern v0.5.0 by @randlee in #137
- site: announce wyvern v0.6.0 by @randlee in #153
- chore: back-merge main (v0.6.0) into develop by @randlee in #152
- Document winget PATH behavior and require PortableCommandAlias by @randlee in #155
- bd init: wire wyvern to dedicated wyvern beads DB (server mode) by @randlee in #157
- chore(atm): replace deprecated features.codex_hooks with features.hooks by @randlee in #156 …

Full release notes »

Technical details

PublisherRand Lee
Version0.7.0
Release date2026-10-08
LicenseMIT
Installer typezip
Architecturex64
Package IDrandlee.wyvern

Install Wyvern from the command line

Install with Windows Package Manager
winget install --id=randlee.wyvern -e
Update to the latest version
winget upgrade --id=randlee.wyvern -e
Uninstall
winget uninstall --id=randlee.wyvern -e

clidialogmcprustwebview

Wyvern version history

0.6.0
0.5.0

Frequently asked questions

Is Wyvern free?

Yes. Wyvern is free and open-source software released under the MIT license.

What is the latest version of Wyvern?

The latest version is 0.7.0, released on Oct 8, 2026.

Is it safe to download Wyvern?

The download button links to the official installer published on github.com, the same file Windows Package Manager installs. You can verify the downloaded file by comparing its SHA-256 checksum with a4e94411b9a21acd7431ff94231d1974179cfd8852e7641c972ac8a4117d5d17.

Which Windows versions does Wyvern support?

Wyvern runs on Windows and is available for 64-bit (x64) systems.

How do I uninstall Wyvern?

Open Settings › Apps › Installed apps, find Wyvern and select Uninstall. From the command line, run winget uninstall --id=randlee.wyvern -e.