Enables AI assistants to start, manage, and embed live application previews in iframes, with support for multiple frameworks, Docker, tunnels, and authentication.
Caution. Specific findings reduced this grade. They are listed on the page. Grades reflect the full trust pyramid: code, verification depth, and reputation. New projects cap at C until adoption is earned.
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copperlang2007
Source: Glama
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Disclosed vulnerabilities in this server's declared npm dependencies (via OSV). Whether each is reachable depends on the installed versions.
ws: Memory exhaustion DoS from tiny fragments and data chunks
http-proxy-middleware `router` host+path substring matching allows Host-header-driven backend routing bypass
http-proxy-middleware can call writeBody twice because "else if" is not used
http-proxy-middleware allows fixRequestBody to proceed even if bodyParser has failed
ws: Uninitialized memory disclosure
ALLOWED_DIRS"": "/path/to/projects"AUTH_SECRETCODESPACE_NAMEDOCKER_ENABLEDGITPOD_WORKSPACE_URLMAX_CONCURRENT_PREVIEWSREMOTE_ACCESSTUNNEL_PROVIDERPORTTool annotations
No tools have read-only/destructive annotations
Add readOnlyHint or destructiveHint annotations to every tool so hosts can warn users before invoking.
All four hints declared on every tool
10/10 tools missing one or more hints — start_preview (missing: readOnlyHint, destructiveHint, idempotentHint, openWorldHint); stop_preview (missing: readOnlyHint, destructiveHint, idempotentHint, openWorldHint); get_preview_status (missing: readOnlyHint, destructiveHint, idempotentHint, openWorldHint), +7 more. OpenAI's directory rejects tools where any of the four hints are missing or non-boolean.
For every tool, set all four hints (readOnlyHint, destructiveHint, idempotentHint, openWorldHint) to explicit true/false values that match the handler’s actual behaviour.
License file
No license file
Add a LICENSE file (MIT, Apache-2.0, etc.).
Tests exist
No test files found
Add tests that exercise each declared tool.
Shell command execution
4 child_process/subprocess calls in production code — runs shell commands (src/preview-manager.ts:148, src/preview-manager.ts:208, src/tunnel.ts:21)
Prefer library functions over shell-outs. If you must shell out, ensure all inputs are properly escaped.
Production dependencies are patched
0 critical, 1 high severity in production deps — ws@8.18.0 (high), http-proxy-middleware@3.0.3 (medium)
Run npm audit fix, or upgrade the affected packages to a non-vulnerable version.
Dependency freshness
1/11 production deps stale: tree-kill@2022-06-27 (4.1y)
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