Borrowing it
Nothing to install: this file belongs to bearlike/Assistant. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.
curl -O https://raw.githubusercontent.com/bearlike/Assistant/master/.claude/skills/mewbo-cli-smoketest/SKILL.mdgit clone --depth 1 https://github.com/bearlike/AssistantWrote this? Show the measurements
A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.
[](https://agentmods.dev/skills/bearlike/assistant/mewbo-cli-smoketest)<a href="https://agentmods.dev/skills/bearlike/assistant/mewbo-cli-smoketest"><img src="https://agentmods.dev/badge/skills/bearlike/assistant/mewbo-cli-smoketest.svg" alt="Measured on agentmods" height="20"></a>- NVIDIA SkillSpector warn
SkillSpector: 5 findings, up to high
These are SkillSpector’s own severities. On a checked sample its high-severity flags on skills were ~96% false positives — a documented command, a public API, a “never do X” rule — so we show them as a caution to read, not a verdict. Why →
- high Agent Snooping · line 241 Skill accesses MCP server configuration files (mcp.json). MCP configs contain server URLs, authentication tokens, and tool definitions — reading them allows the skill to discover and potentially abuse other tool integrations.Fix: Remove all code or instructions that read MCP configuration files (mcp.json). MCP server details should be managed by the agent runtime, not read by individual skills.
- medium Excessive Agency · line 23 Skill enables autonomous high-impact decisions without human-in-the-loop verification. Critical operations (destructive commands, financial transactions, data deletion) should require explicit user confirmation.Fix: Add human-in-the-loop confirmation for destructive, irreversible, or high-impact operations. Never auto-execute commands that modify files, send data, or alter system state.
- medium Excessive Agency · line 38 Skill enables autonomous high-impact decisions without human-in-the-loop verification. Critical operations (destructive commands, financial transactions, data deletion) should require explicit user confirmation.Fix: Add human-in-the-loop confirmation for destructive, irreversible, or high-impact operations. Never auto-execute commands that modify files, send data, or alter system state.
- medium Excessive Agency · line 23 Skill enables autonomous high-impact decisions without human-in-the-loop verification. Critical operations (destructive commands, financial transactions, data deletion) should require explicit user confirmation.Fix: Add human-in-the-loop confirmation for destructive, irreversible, or high-impact operations. Never auto-execute commands that modify files, send data, or alter system state.
- medium Excessive Agency · line 38 Skill enables autonomous high-impact decisions without human-in-the-loop verification. Critical operations (destructive commands, financial transactions, data deletion) should require explicit user confirmation.Fix: Add human-in-the-loop confirmation for destructive, irreversible, or high-impact operations. Never auto-execute commands that modify files, send data, or alter system state.
What it costs to keep this loaded
Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.
| Model | Per session | Once invoked |
|---|---|---|
| Fable 5.1 | $0.00111 | $0.04297 |
| Opus 5 | $0.00056 | $0.02148 |
| Sonnet 5 | $0.00022 | $0.00859 |
| Haiku 4.5 | $0.00011 | $0.00430 |
Grade B, and why
mewbo-cli-smoketest scanned grade B with 1 finding against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 8d ago.
A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.
Reads MCP configurationmediumAgent snooping
mcp.json carries server URLs and auth tokens; reading it lets a mod discover and abuse other integrations.
- **Env var expansion.** CWD `.mcp.json` may use `${VAR}`; if unset in the launching shell, tokens stay literal and MCP calls fail silently. How it starts
The opening of the file, as written. The whole thing — 243 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Mewbo CLI Smoke Test via Tmux
Automate end-to-end CLI testing by running mewbo inside a tmux pane, driving it with commands/queries, and analyzing both the rendered TUI frame and the verbose log for errors, warnings, and regressions.
Why tmux
The CLI is one full-screen Textual App, with live streaming + a per-agent fleet sidebar layered on top. You cannot run it via the Bash tool because it requires a PTY and renders interactive widgets on the alternate screen. Tmux gives you a real terminal to drive the app while capturing output programmatically.
Two capture channels (read this first)
A Textual app paints the alternate screen, so the two things you want to observe come from two different places:
- The rendered TUI frame —
tmux capture-pane -preturns the current visible frame only. The alt-screen keeps no scrollback, so-S -100does not give you history the way it does for a plain shell; it just returns the visible grid. To inspect what scrolled past, drive the app to re-render (e.g. scroll the transcript) or rely on the log channel below. - The verbose log — route logs to a file so they don't corrupt the TUI, then
grepthe file. Do not use--log-consolewith the TUI (it paints over the widgets). Launch with:
tmux send-keys -t <session>:mewbo-test \
"mewbo -vv --auto-approve --log-file /tmp/mewbo-test.log --log-overwrite" Enter
Then, after each step: tmux capture-pane -p -t <session>:mewbo-test for the frame, and grep -nE 'WARNING|ERROR|Traceback|Failed to' /tmp/mewbo-test.log for diagnostics. The two are complementary — a clean frame can still hide a logged reconnect error, and a busy log can accompany a correctly-rendered frame.
Use the installed
mewbo(fromuv tool install .) oruv run mewbofrom the repo root. The installed binary tests what the user actually runs.
Setup
tmux list-sessions
tmux new-window -t <session>:<next> -n mewbo-test
# width matters: the sidebar/fleet only render legibly with enough columns
tmux resize-window -t <session>:mewbo-test -x 200 -y 50 2>/dev/null || true
tmux send-keys -t <session>:mewbo-test \
"mewbo -vv --auto-approve --log-file /tmp/mewbo-test.log --log-overwrite" Enter
sleep 10 && tmux capture-pane -p -t <session>:mewbo-test
What this file has done since we first saw it
Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.
- 8d ago First seen · 243 lines · 111 tokens per session scan B 598351e47c62
mewbo-cli-smoketest is a skill published in the GitHub repository bearlike/Assistant (42 stars, last pushed yesterday), licensed MIT. It adds 111 tokens to every session and 4,297 once invoked, about $0.0006 per session on Opus 5. A static security scan graded it B with 1 finding (reads mcp configuration). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.
Other skills, from other repositories
dogfood
Exploratory QA of web apps: find bugs, evidence, reports.
screen-reader-testing
Test web applications with screen readers including VoiceOver, NVDA, and JAWS. Use when validating screen reader compatibility, debugging accessibility issues, or ensuring assistive technology support.
e2e-testing-patterns
Master end-to-end testing with Playwright and Cypress to build reliable test suites that catch bugs, improve confidence, and enable fast deployment. Use when implementing E2E tests, debugging flaky tests, or establishing testing standards.
credit-note-fixer
Fix the tiny credit-note formatting bug and rerun the exact targeted test command.
playwright-cli
Automates browser interactions for web testing, form filling, screenshots, and data extraction. Use when the user needs to navigate websites, interact with web pages, fill forms, take screenshots, test web applications, or extract information from web pages.
langbot-testing
Test LangBot WebUI and core product flows with an automated browser and backend logs. Use when validating the configured LangBot frontend, pipeline Debug Chat, model provider setup and test buttons, bot and knowledge-base UI flows, or troubleshooting failed LangBot end-to-end tests.