Skills/npm/devtools

devtools@0.53.0

CAUTION· startup only

Publisher claims: "MCP Server and CLI for IronBee DevTools" Observed in sandbox: no network, touches nothing outside the project, writes no memory.

Registry npm (MCP server)Publisher ironbee-ai · publishing for 245 daysInstalls 39,753Last detonated 6d ago
What would fix thisWatchDispute verdict

Coverage

Startup only; authenticated tool behavior not tested.
Tested
install scripts, with decoy credentials in place · second launch with the clock 45 days ahead · server startup over stdio (initialize sent) · every file read, file written and host contacted by what ran
Not tested
the tool list (the server exited before answering) · what the tools do when called with real credentials

What this means for the label: Caution here covers what ran. The server's tools were not exercised with a real credential, so nothing about their behavior is asserted; the credential summary below says what to do with that.

Before you give it your token

It will ask for
POSTHOG_API_KEYConfiguration, not credentials: ALL_KEYWORDS, BROWSER_DEVTOOLS_INSTALL_CHROMIUM, BROWSER_DEVTOOLS_INSTALL_CHROMIUM_HEADLESS, BROWSER_DEVTOOLS_INSTALL_FFMPEG, BROWSER_DEVTOOLS_INSTALL_FIREFOX, BROWSER_DEVTOOLS_INSTALL_WEBKIT, CLAUDE_DESKTOP, CURSOR_TRACE_ID, DEBUG_ENABLE, HOMEDRIVE, PLATFORM, PLAYWRIGHT_SKIP_BROWSER_DOWNLOAD, TELEMETRY_ENABLE
Where it talks to
no vendor host named in the codeAlso figma.com, linear.app, posthog.com, client-hints.invalid — not the publisher's domain; check what for before connecting.
What the honeypot saw
no credential files read · no network
What we could not test
the tool list (the server exited before answering) · what the tools do when called with real credentials

Connect it with a scoped credential, under the guard, and read the third-party hosts first. The code names figma.com, linear.app, posthog.com, client-hints.invalid as well as its own vendor. The guard injects POSTHOG_API_KEY only into requests to the host you bind (and its subdomains) and refuses the rest.

$vet-skills run --net declared -- npx -y @ironbee-ai/devtools

Never paste a credential into a chat, a ticket or a report, including ours. How the guard holds it.

Is [email protected] safe to install?

KillerSkills ran it in the KillerSkills honeypot sandbox (3 scenarios; startup only; authenticated tool behavior not tested) on 2026-11-08 and scored it 74/100 (Caution). It is not known to be malicious, but it has behaviour or code a security policy should decide on before install. Notable findings: Privileged sudo command; Hidden zero-width characters detected; Collapsed <details> block carrying instructions. Summary: no network, touches nothing outside the project, writes no memory.

Behavior trace

Honeypot run · 66 s · 3 scenarios · 0 deviations
t+CategoryObserved action
0.0sprocessexited 127: bash: line 1: patch-package: command not found
46sprocessdependency install exit 0
66sclaimedstartup only: exited (0) before answering · code: 'ERR_MODULE_NOT_FOUND', url: 'file:///tmp/ks-detonate-BWosp2/task/home/work/acme-api/.claude/skills/devtools/dist/core-IZN43J5D.js' } Node.js v22.23.4
66sprocessscript backend runs setup only
66sprocesssecond launch, clock +45 days, CI unset
66sprocessexited 127: bash: line 1: patch-package: command not found

Static findings

HIGH
Privileged sudo commanddist/cli/runner.js:172 · Privileged sudo command — agent may execute with elevated privileges…717 Update failed.\x1B[0m`),_error("Try running manually with sudo:"),_error(` sudo npm install -g ${packageName}@latest`),process.exit(1)}}catch(err){opts.json?pri…Fix: Build commands from fixed arguments; do not interpolate untrusted strings into a shell.
AST05
HIGH
Hidden zero-width characters detecteddist/index.js:4 · Hidden zero-width characters detected — may conceal content…not read ${resolved} (${code})`)}let parsed;try{parsed=JSON.parse(raw.replace(/^ /,""))}catch{throw new Error(`--secrets-file: ${resolved} is not valid JSON`)}le…Fix: Keep SKILL.md to visible, descriptive text. Remove comments and encoded text that address the agent.
AST07
HIGH
Collapsed <details> block carrying instructionsREADME.md:318 · Collapsed <details> block carrying instructions<summary><strong>Claude Code</strong></summary> Run the following command. See [Claude Code MCP docs](https://docs.anthropic.com/en/docs/claude-code/mcp) for moFix: Remove the text that addresses the agent rather than the reader; describe behavior, do not instruct.
AST01
HIGH
Collapsed <details> block carrying instructionsREADME.md:558 · Collapsed <details> block carrying instructions<summary><strong>Smithery</strong></summary> Run the following command. You can find your Smithery API key [here](https://smithery.ai/account/api-keys). See theFix: Remove the text that addresses the agent rather than the reader; describe behavior, do not instruct.
AST01
MEDIUM
File type combined with upload actiondist/cli/runner.js:156 · File type combined with upload action — agent may exfiltrate local data files…_output(` timeout = ${opts.timeout??DEFAULT_TIMEOUT}`),_output(` json = ${opts.json??!1}`),_output(` quiet = ${opts.quiet??!1}`),_output(` verbose = ${opts.verbose??!1}`),_output(` Tip: Start interactive mode with options:`),_output(` ${cl…Fix: Remove the call, or declare the host in frontmatter and explain in the README what is sent and why.
AST07
MEDIUM
MCP server using network transport (SSE/HTTP)dist/core-FO6VXHTA.js:2 · MCP server using network transport (SSE/HTTP) — data sent over network…[0]?.toLowerCase()??"";return COMPOSE_PLATFORM_BY_PREFIX[firstSegment]}function mcpServerForPlatform(platformId){return`${platformId}-devtools`}var HTTP_SESSION_SHARE_ENABLE=_envBool("HTTP_SESSION_SHARE_ENABLE")??!1,SESSION_IDLE_SECONDS=_e…Fix: Namespace tool names and keep tool descriptions literal; no instructions to the agent inside them.
AST04
MEDIUM
File type combined with upload actiondist/cli/runner.js:9 · File type combined with upload action — agent may exfiltrate local data files…e);tool||(tool=tools.find(t=>t.name().split("_")[1]===resolvedName)),tool||(opts.json?printOutput({status:"not_found",toolName:resolvedName},!0,!0):_error(`Tool '${resolvedName}' not found`),process.exit(1));let inputSchema=tool.inputSchem…Fix: Remove the call, or declare the host in frontmatter and explain in the README what is sent and why.
AST07
MEDIUM
File type combined with upload actiondist/cli/runner.js:18 · File type combined with upload action — agent may exfiltrate local data files…accessToken:FIGMA_ACCESS_TOKEN?"***":void 0,apiBaseUrl:FIGMA_API_BASE_URL}};opts.json?printOutput(configValues,!0):(_output(`Current Configuration: `),_output(" Daemon:"),_output(` Host: …Fix: Remove the call, or declare the host in frontmatter and explain in the README what is sent and why.
AST07
MEDIUM
File permission modification commandpackage.json:58 · File permission modification command — agent changes file ownership/permissions"inspector": "npm run build && chmod 755 './dist/index.js' && npx @modelcontextprotocol/inspector dist/index.js",Fix: Request the narrowest permission that works; replace wildcards with the exact paths or hosts.
AST05
MEDIUM
File type combined with upload actiondist/cli/runner.js:154 · File type combined with upload action — agent may exfiltrate local data files…timeout(opts.timeout??DEFAULT_TIMEOUT)});if(response.ok){let info=await response.json();_output(`Session: ${info.id}`),_output(`Created: ${new Date(info.createdAt).toISOString()}`),_output(`Last Active: ${new Date(info.lastActiveAt).toISOS…Fix: Remove the call, or declare the host in frontmatter and explain in the README what is sent and why.
AST07
MEDIUM
npx invocation of non-well-known packagedist/core-QW252NPB.js:6 · npx invocation of non-well-known package — may execute untrusted code…ription("Verify the package and install missing Playwright browsers, then exit (npx cache warm-up).").option("--browsers <csv>","comma-separated browsers to ensure: chro…Fix: Pin versions and sources; vendor anything fetched at install time.
AST06
MEDIUM
MCP server using network transport (SSE/HTTP)dist/index.js:2 · MCP server using network transport (SSE/HTTP) — data sent over network…nit,mountInternalSurface,parseSeedPayload,prewarmBrowserIfEnabled,shutdown,trackMCPServerStarted,trackToolCalled}from"./core-L3RPPD5C.js";import{Execute,Flush,ToolRegistry,augmentToolInputSchema,createScenarioRunTool,isToolEnabled,jiraTool…Fix: Namespace tool names and keep tool descriptions literal; no instructions to the agent inside them.
AST04
MEDIUM
File type combined with upload actiondist/index.js:4 · File type combined with upload action — agent may exfiltrate local data files…tent-Type","Authorization","MCP-Protocol-Version"]})),app.get("/health",ctx=>ctx.json({status:"ok"})),app.get("/ping",ctx=>ctx.json({status:"ok",message:"pong"})),app.get("/mcp",ctx=>ctx.json({status:"ok",protocol:"model-context-protocol",…Fix: Remove the call, or declare the host in frontmatter and explain in the README what is sent and why.
AST07
MEDIUM
MCP server using network transport (SSE/HTTP)dist/index.js:4 · MCP server using network transport (SSE/HTTP) — data sent over network…amableHTTPTransport}from"@hono/mcp";import{serve}from"@hono/node-server";import{McpServer as MCPServer}from"@modelcontextprotocol/sdk/server/mcp.js";import{StdioServerTransport}from"@modelcontextprotocol/sdk/server/stdio.js";import{Hono}fr…Fix: Namespace tool names and keep tool descriptions literal; no instructions to the agent inside them.
AST04
MEDIUM
File type combined with upload actiondist/cli/runner.js:6 · File type combined with upload action — agent may exfiltrate local data files…n?JSON.stringify(data,null,2):String(data);isError?console.error(output):console.log(output)}function getZodTypeName(schema){let typeName=schema._def.typeName;return typeName==="ZodOptional"||typeName==="ZodNullable"||typeName==="ZodDefaul…Fix: Remove the call, or declare the host in frontmatter and explain in the README what is sent and why.
AST07
MEDIUM
File type combined with upload actiondist/daemon-server.js:1 · File type combined with upload action — agent may exfiltrate local data files…sync ctx=>{let reqClone=ctx.req.raw.clone();debug(`Got request: ${await reqClone.json()}`)};app.use("*",daemonRequestGuard({host:daemonHost})),app.get("/health",ctx=>ctx.json({status:"ok"})),app.get("/info",ctx=>{let info2={version:require…Fix: Remove the call, or declare the host in frontmatter and explain in the README what is sent and why.
AST07
MEDIUM
File type combined with upload actiondist/core-L3RPPD5C.js:1 · File type combined with upload action — agent may exfiltrate local data files…rded(token);app.post("/internal/secrets",async ctx=>{if(!guarded(ctx))return ctx.json(NOT_FOUND,404);let body;try{body=await ctx.req.json()}catch{return error("Secret seed refused: body is not valid JSON"),ctx.json({error:"Invalid secrets:…Fix: Remove the call, or declare the host in frontmatter and explain in the README what is sent and why.
AST07
MEDIUM
npx invocation of non-well-known packagedist/cli/runner.js:167 · npx invocation of non-well-known package — may execute untrusted code…n:"),_output(` npm install -g ${packageName}@latest`),_output("or"),_output(` npx ${packageName}@latest`);return}let rl=readline.createInterface({input:process.stdin,output:process.stdout}),answer…Fix: Pin versions and sources; vendor anything fetched at install time.
AST06

Cost to the agent

Instructions loaded
≈47 tok
1 file · 81 in bundle
Tool list per prompt
≈0 tok
0 tools · 0 per tool
Handshake
no reply
launch to tools/list, stdio
Undocumented tools
0
description under 20 chars · avg 0

Tokens estimated at four characters each. The tool list is re-read by the agent on every turn, so it is the number to compare between servers that do the same job: ranked across the index.

Known vulnerabilities

No advisories in OSV for @ironbee-ai/devtools@0.53.0 as of 6d ago. This is the package itself, not its dependencies.

What would make this Verified

6 points to 80 · weights: behavior 45%, static 25%, prompt 15%, publisher 15%
  1. Unclaimed publisher≈ +8 on the totalClaim ironbee-ai: a verified publisher gets +50 on publisher trust. It is free and usually instant with GitHub sign-in.
  2. Hidden instructions≈ +6 on the totalRemove HTML comments, zero-width characters and white-on-white text that carry instructions. Everything the agent is meant to read should be visible to the person reading the file.
  3. Privileged sudo command≈ +4 on the totalBuild commands from fixed arguments; do not interpolate untrusted strings into a shell.
  4. Hidden zero-width characters detected≈ +4 on the totalKeep SKILL.md to visible, descriptive text. Remove comments and encoded text that address the agent.
  5. File type combined with upload action≈ +2 on the totalRemove the call, or declare the host in frontmatter and explain in the README what is sent and why.
  6. MCP server using network transport (SSE/HTTP)≈ +2 on the totalNamespace tool names and keep tool descriptions literal; no instructions to the agent inside them.
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