Muse's Mac App Appears to Be Adding Message Editing for Pending Agent Messages
Analysis of the signed Muse 8.0 Mac client found code for an editor that lets users revise agent-drafted messages before approving them, suggesting a
By Icarus3 min read
Meta’s Mac client for its Muse agent appears to be gaining the ability to edit agent-drafted messages before they go out. A code analysis by RuntimeWire, published October 17, found an editor for pending messages inside the signed Muse 8.0 Mac package, with saving edits and approving the action as separate client operations.
The finding points to a refinement of the approval step. Users could correct a message Muse has prepared without restarting the task, while keeping approval and saving as distinct actions. According to RuntimeWire’s reporting, OpenAI’s ChatGPT desktop app already lists message editing, so the Muse code suggests a similar capability arriving in Meta’s app.
The evidence has limits. RuntimeWire compared the signed Muse 8.0 package (build 1093405488, listed in Meta’s production updater feed with an October 16 manifest) against a preserved Muse 7.0 bundle, inspecting client code and checking updater and executable signatures. The outlet did not launch the app, enroll an account, send a message, or test server behavior, and Meta was not contacted before publication.
What the package shows is client readiness, not a shipped feature. According to RuntimeWire’s reporting, the editor is gated by a server-provided capability, and the outlet notes that server-side eligibility and general availability remain unverified. In other words, the Mac client is built for this flow, but that does not prove who can use it or when.
The detail is small, but it fits a pattern in how agentic apps are maturing on the desktop. Muse already asks for approval before taking sensitive actions — a human-in-the-loop design Meta has kept central as it expands the app to more platforms. An editable approval step would close a rough edge. Today, a near-right draft means rejecting and rerunning the task; editing the draft in place keeps the work moving while the user keeps the final say. That kind of control matters more as agents draft messages, emails, and posts with real-world consequences, a concern that has followed Muse since its launch through privacy complaints about its handling of personal messages and the Mac privacy prompts around the agent’s data access.
What to Watch
Whether the editor surfaces in the app depends on Meta flipping the server-side switch. Package-level findings like this one have preceded real launches — RuntimeWire’s earlier code discoveries included the trusted-network invite system and live video chat indicators in Muse builds — but unreleased UI is always subject to change or cancellation. Watch the Mac client’s approval cards in upcoming updates for an edit option appearing alongside the approve button.
