Skills/npm/jui-tools-mcp-server

jui-tools-mcp-server@2.24.0

CAUTION· install only

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

Registry npm (MCP server)Publisher tai-kim · publishing for 102 daysInstalls 3,044Last detonated 20 h ago
What would fix thisWatchDispute verdict

Coverage

Install scripts ran; no agent task scenario for this bundle.
Tested
install scripts, with decoy credentials in place · 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; install scripts ran; no agent task scenario for this bundle) on 2026-11-13 and scored it 68/100 (Caution). It is not known to be malicious, but it has behaviour or code a security policy should decide on before install. Notable findings: Direct script execution from GitHub raw URL; Pipe-to-shell pattern; Direct script execution from GitHub raw URL. Summary: calls raw.githubusercontent.com only, touches nothing outside the project, writes no memory.

Behavior trace

Honeypot run · 0 s · 2 scenarios
t+CategoryObserved action
0.0sprocessinstall script run in the sandbox
0.1snetworkCONNECT tcp://raw.githubusercontent.com:443 · not in the allow-list, refused
0.1snetworkCONNECT tcp://raw.githubusercontent.com:443 · not in the allow-list, refused
0.1snetworkCONNECT tcp://raw.githubusercontent.com:443 · not in the allow-list, refused
0.1snetworkCONNECT tcp://raw.githubusercontent.com:443 · not in the allow-list, refused
0.1snetworkCONNECT tcp://raw.githubusercontent.com:443 · not in the allow-list, refused
0.1snetworkCONNECT tcp://raw.githubusercontent.com:443 · not in the allow-list, refused
0.1snetworkCONNECT tcp://raw.githubusercontent.com:443 · not in the allow-list, refused
0.1snetworkCONNECT tcp://raw.githubusercontent.com:443 · not in the allow-list, refused
0.1snetworkCONNECT tcp://raw.githubusercontent.com:443 · not in the allow-list, refused
0.1sprocessscript backend runs setup only
0.1sprocessscript backend runs setup only
0.2sprocesssecond launch, clock +45 days, CI unset
0.4snetworkCONNECT tcp://raw.githubusercontent.com:443 · not in the allow-list, refused
0.4snetworkCONNECT tcp://raw.githubusercontent.com:443 · not in the allow-list, refused
0.4snetworkCONNECT tcp://raw.githubusercontent.com:443 · not in the allow-list, refused
0.4snetworkCONNECT tcp://raw.githubusercontent.com:443 · not in the allow-list, refused
0.4snetworkCONNECT tcp://raw.githubusercontent.com:443 · not in the allow-list, refused
0.4snetworkCONNECT tcp://raw.githubusercontent.com:443 · not in the allow-list, refused
0.4snetworkCONNECT tcp://raw.githubusercontent.com:443 · not in the allow-list, refused
0.4snetworkCONNECT tcp://raw.githubusercontent.com:443 · not in the allow-list, refused
0.4snetworkCONNECT tcp://raw.githubusercontent.com:443 · not in the allow-list, refused

Static findings

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
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
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 files…se/PaaS files, SDK imports and env var names — never Terraform state, tfvars or .env values). Returns the draft's counts and nodes (id, category, provider, service,…Fix: 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
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
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
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
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…se/PaaS files, SDK imports and env var names — never Terraform state, tfvars or .env values). Returns the draft's counts and nodes (id, category, provider, service,…Fix: 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
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
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
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@2.24.0 as of 20 h ago. This is the package itself, not its dependencies.

What would make this Verified

12 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. Direct script execution from GitHub raw URL≈ +4 on the totalPin versions and sources; vendor anything fetched at install time.
  4. 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.
  5. Remote installer piped to shell≈ +2 on the totalBuild commands from fixed arguments, never from interpolated strings; prefer an API client over shelling out.
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