Skills/npm/jui-tools-mcp-server

jui-tools-mcp-server@2.21.0

CAUTION· install only

Publisher claims: "MCP server for JsonUI project management - wraps jui and jsonui-doc CLIs plus component spec lookup" Observed in sandbox: no network, touches nothing outside the project, writes no memory.

Registry npm (MCP server)Publisher tai-kim · publishing for 102 daysInstalls 3,044Last detonated 7d ago
What would fix thisWatchDispute verdict

Coverage

Nothing executable in the bundle ran; the trace covers the install step only.
Tested
second launch with the clock 45 days ahead · 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 (2 scenarios; nothing executable in the bundle ran; the trace covers the install step only) on 2026-11-07 and scored it 65/100 (Caution). It is not known to be malicious, but it has behaviour or code a security policy should decide on before install. Notable findings: Pipe-to-shell pattern; Pipe-to-shell pattern; Pipe-to-shell pattern. Summary: no network, touches nothing outside the project, writes no memory.

Behavior trace

Honeypot run · 1 s · 2 scenarios · 0 deviations
t+CategoryObserved action
0.3sprocessscript backend runs setup only
0.3sprocessscript backend runs setup only
0.4sprocesssecond launch, clock +45 days, CI unset
0.6sprocessexec /usr/bin/faketime

Static findings

CRITICAL
Pipe-to-shell patterndist/tools/viz/viz_common.js:10 · Pipe-to-shell pattern — downloads and immediately executes remote codeexport const UPDATE_JUI = "curl -fsSL https://raw.githubusercontent.com/Tai-Kimura/jsonui-cli/main/installer/bootstrap.sh | bash";Fix: Build commands from fixed arguments, never from interpolated strings; prefer an API client over shelling out.
AST06
CRITICAL
Pipe-to-shell patternsrc/tools/viz/viz_common.ts:15 · Pipe-to-shell pattern — downloads and immediately executes remote code"curl -fsSL https://raw.githubusercontent.com/Tai-Kimura/jsonui-cli/main/installer/bootstrap.sh | bash";Fix: Build commands from fixed arguments, never from interpolated strings; prefer an API client over shelling out.
AST06
CRITICAL
Pipe-to-shell patterndist/tools/viz/viz_common.d.ts:9 · Pipe-to-shell pattern — downloads and immediately executes remote codeexport declare const UPDATE_JUI = "curl -fsSL https://raw.githubusercontent.com/Tai-Kimura/jsonui-cli/main/installer/bootstrap.sh | bash";Fix: Build commands from fixed arguments, never from interpolated strings; prefer an API client over shelling out.
AST06
HIGH
Access to sensitive file pathsdist/tools/infra/infra_seed.js:10 · Access to sensitive file paths — SSH keys, AWS credentials, env files, or system files* tfvars or .env values), and its report (what it read, what it could not place). By default the draft is written toFix: Stop enumerating or reading credential locations; take secrets from a declared environment variable the user sets on purpose.
AST05
MEDIUM
Remote installer piped to shelldist/tools/viz/viz_common.js:10 · Remote installer piped to shellexport const UPDATE_JUI = "curl -fsSL https://raw.githubusercontent.com/Tai-Kimura/jsonui-cli/main/installer/bootstrap.sh | bash";Fix: Build commands from fixed arguments, never from interpolated strings; prefer an API client over shelling out.
AST07
MEDIUM
Remote installer piped to shelldist/tools/viz/viz_common.d.ts:9 · Remote installer piped to shellexport declare const UPDATE_JUI = "curl -fsSL https://raw.githubusercontent.com/Tai-Kimura/jsonui-cli/main/installer/bootstrap.sh | bash";Fix: Build commands from fixed arguments, never from interpolated strings; prefer an API client over shelling out.
AST07
HIGH
Direct script execution from GitHub raw URLsrc/tools/viz/viz_common.ts:15 · Direct script execution from GitHub raw URL — unverified code source"curl -fsSL https://raw.githubusercontent.com/Tai-Kimura/jsonui-cli/main/installer/bootstrap.sh | bash";Fix: Pin versions and sources; vendor anything fetched at install time.
AST06
HIGH
Access to sensitive file pathsdist/tools/infra/infra_seed.js:53 · Access to sensitive file paths — SSH keys, AWS credentials, env files, or system filesserver.tool("infra_seed", "Draft the server room's model from the project's IaC, config files and code with `jsonui-doc seed infra` (Compose, Terraform/OpenTofu, Kubernetes, CloudFormation/SAM/CDK, wrFix: Stop enumerating or reading credential locations; take secrets from a declared environment variable the user sets on purpose.
AST05
MEDIUM
Remote installer piped to shellsrc/tools/viz/viz_common.ts:15 · Remote installer piped to shell"curl -fsSL https://raw.githubusercontent.com/Tai-Kimura/jsonui-cli/main/installer/bootstrap.sh | bash";Fix: Build commands from fixed arguments, never from interpolated strings; prefer an API client over shelling out.
AST07
HIGH
Access to sensitive file pathssrc/tools/infra/infra_seed.ts:60 · Access to sensitive file paths — SSH keys, AWS credentials, env files, or system files"Draft the server room's model from the project's IaC, config files and code with `jsonui-doc seed infra` (Compose, Terraform/OpenTofu, Kubernetes, CloudFormation/SAM/CDK, wrangler, Firebase/PaaS fileFix: Stop enumerating or reading credential locations; take secrets from a declared environment variable the user sets on purpose.
AST05
HIGH
Direct script execution from GitHub raw URLdist/tools/viz/viz_common.d.ts:9 · Direct script execution from GitHub raw URL — unverified code sourceexport declare const UPDATE_JUI = "curl -fsSL https://raw.githubusercontent.com/Tai-Kimura/jsonui-cli/main/installer/bootstrap.sh | bash";Fix: Pin versions and sources; vendor anything fetched at install time.
AST06
HIGH
Direct script execution from GitHub raw URLdist/tools/viz/viz_common.js:10 · Direct script execution from GitHub raw URL — unverified code sourceexport const UPDATE_JUI = "curl -fsSL https://raw.githubusercontent.com/Tai-Kimura/jsonui-cli/main/installer/bootstrap.sh | bash";Fix: Pin versions and sources; vendor anything fetched at install time.
AST06
HIGH
Access to sensitive file pathssrc/tools/infra/infra_seed.ts:13 · Access to sensitive file paths — SSH keys, AWS credentials, env files, or system files* tfvars or .env values), and its report (what it read, what it could not place). By default the draft is written toFix: Stop enumerating or reading credential locations; take secrets from a declared environment variable the user sets on purpose.
AST05

Cost to the agent

Instructions loaded
≈55 tok
1 file · 81 in bundle

Tokens estimated at four characters each. Skills load their instruction text when triggered; the figure is what that costs.

Known vulnerabilities

No advisories in OSV for jui-tools-mcp-server@2.21.0 as of 7d ago. This is the package itself, not its dependencies.

What would make this Verified

15 points to 80 · weights: behavior 45%, static 25%, prompt 15%, publisher 15%
  1. Pipe-to-shell pattern≈ +9 on the totalBuild commands from fixed arguments, never from interpolated strings; prefer an API client over shelling out.
  2. Unclaimed publisher≈ +8 on the totalClaim tai-kim: a verified publisher gets +50 on publisher trust. It is free and usually instant with GitHub sign-in.
  3. Access to sensitive file paths≈ +4 on the totalStop enumerating or reading credential locations; take secrets from a declared environment variable the user sets on purpose.
  4. Direct script execution from GitHub raw URL≈ +4 on the totalPin versions and sources; vendor anything fetched at install time.
  5. New publisher≈ +3 on the totalTime clears this on its own after 14 and 30 days. Claiming the handle (+50) is the fastest way past it.
  6. Remote installer piped to shell≈ +2 on the totalBuild commands from fixed arguments, never from interpolated strings; prefer an API client over shelling out.
Publish a new version to npm, then queue it here. Not your skill? Claim the handle to get verdict changes by email.Claim tai-kimPropose a patch to the maintainer