mcp-apps-host-dev@0.1.0
VERIFIED· install onlyPublisher claims: "Use when developing or debugging the MCP Apps host layer in any agent application — rendering sandboxed iframe cards, bridging postMessage ↔ gateway ↔ MCP server, or fixing security/architectural issues in the card pipeline. Covers the full bridge architecture, security model, and common pitfalls. Includes Hermes Desktop as a reference implementation." Observed in sandbox: no network, touches nothing outside the project, writes no memory.
Coverage
Nothing executable in the bundle ran; the trace covers the install step only.- Tested
- every file read, file written and host contacted by what ran
- Not tested
- use of the skill by an agent
Is [email protected] safe to install?
KillerSkills ran it in the KillerSkills honeypot sandbox (1 scenario; nothing executable in the bundle ran; the trace covers the install step only) on 2026-11-07 and scored it 92/100 (Verified). In what ran, nothing we could detect went wrong: no undeclared network egress, no credential reads, no persistent instruction writes. What it does with a real credential was not observed; the static findings and the publisher carry the rest of the score. Summary: no network, touches nothing outside the project, writes no memory.
Behavior trace
Honeypot run · 0 s · 1 scenarios · 0 deviationsStatic findings
cd apps/desktop && npx vitest run src/components/assistant-ui/mcp-app-card.test.tsx src/store/mcp-app-security.test.tsFix: Pin versions and sources; vendor anything fetched at install time.No other findings across 839 lines in 3 files.
Cost to the agent
Tokens estimated at four characters each. Skills load their instruction text when triggered; the figure is what that costs.
Known vulnerabilities
Vulnerability advisories (OSV) cover npm and PyPI packages; this registry has no advisory database.