Alpha release notes

Mosaic 0.1.0-alpha.1

Last updated August 13, 2026

What’s available

• A searchable Plan library with editable, approved, duplicated, archived, and revisioned Plans.
• Plan-scoped Codex chat with live work activity, model/effort/speed selection, interruption, retry, and approvals.
• Standard Brief, Requirements, Architecture, UX, Test Scenarios, and Delivery Plan documents, plus custom Markdown documents.
• Self-contained interactive HTML designs with sample data and sandboxed previews.
• Document comments and element-level design comments.
• Candidate diffs, validation, acceptance or discard, and immutable approved revisions.
• Local SQLite metadata, Application Support artifact storage, and macOS Keychain-backed credential references.

Not enabled

Projects, repository cloning, implementation agents, worktrees, pull requests, provider configuration, staging, production, releases, incidents, Attention, Activity, Plan handoff, and Windows support are not part of this alpha.

Download details

• Platform: macOS
• Architecture: arm64 / Apple Silicon
• Minimum OS: macOS 13.0
• Size: 119 MB (125,102,226 bytes)
• Signed and notarized: No

SHA-256:

Known limitations

• The app requires Apple’s Control-click Open flow on first launch.
• Codex availability, compatible models, and usage limits depend on the connected Codex installation and eligible ChatGPT access.
• Generated Plan artifacts are still alpha output and require human review.
• No Mosaic cloud backup or cross-device synchronization is provided.

View the immutable tag and release files in the public releases repository.

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