chat-gun (HsienW/chat-gun) is an MCP server listed on the M8ven Trust Index. It scores 62 out of 100, grade C. It declares 5 tools. No publisher has claimed this listing.
🤖 A full-stack Agent Chat Runtime for pre-production validation, built with act, TypeScript, and LangGraph JS combining streaming, multimodal, HITL, and tools with durable Task/Step execution, retry budgets, idempotency, compensation, distributed locks, context governance, OpenTelemetry tracing, model fallback, cost tracking, and Opik evaluation.
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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HsienW
Source: github_repo_search
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The grade above is for the source repository. Registries can serve a different version, so we mark the ones we were not able to read.
These names and descriptions are the publisher's own, read from the source code. We print them as written. Our assessment is the findings above, not this list.
calculator_tool計算 mathematical expression。支援 arithmetic、sqrt、sin、cos、tan、log、pi、e 與 parentheses。
weather_forecastGet hourly or daily weather forecast for a city or location using Open-Meteo. Use this for tomorrow, tonight, weekend, date range, rain probability, temperature trend, or other forecast-backed weather questions. Do not use it for historical weather, climate knowledge, or standalone advice.
current_weatherGet real-time current weather for a city or location using Open-Meteo. Use this only for current weather, current temperature, humidity, current rain, or current wind questions. For tomorrow, tonight, weekend, date range, or rain probability forecast questions, use weather_forecast. Provide country …
web_fetchFetch and extract readable text from a public HTTP/HTTPS URL. Use this after web_search to inspect source pages before answering.
web_searchSearch the public web using Tavily Search API. Use this for current events, factual lookup, sources, product/news/law/regulation changes, and research tasks that need internet evidence.
Disclosed vulnerabilities in this server's declared npm dependencies (via OSV). Whether each is reachable depends on the installed versions.
Undici has Unhandled Exception in WebSocket Client Due to Invalid server_max_window_bits Validation
Undici has Unbounded Memory Consumption in WebSocket permessage-deflate Decompression
undici WebSocket client vulnerable to denial of service via fragment count bypass
Undici has an HTTP Request/Response Smuggling issue
undici vulnerable to HTTP response queue poisoning via keep-alive socket reuse
CHAT_TEMPERATUREHTTPS_PROXYHTTP_PROXYMATH_TEMPERATUREMCP_AGENT_TEMPERATUREhttp_proxyhttps_proxyTool 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
5/5 tools missing one or more hints — calculator_tool (missing: readOnlyHint, destructiveHint, idempotentHint, openWorldHint); weather_forecast (missing: readOnlyHint, destructiveHint, idempotentHint, openWorldHint); current_weather (missing: readOnlyHint, destructiveHint, idempotentHint, openWorldHint), +2 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.
No arbitrary install scripts
Has postinstall/preinstall script — runs arbitrary code on npm install
Remove postinstall/preinstall hooks unless they’re essential.
Production dependencies are patched
0 critical, 3 high severity in production deps — undici@5.29.0 (high), undici@5.29.0 (high)
Run npm audit fix, or upgrade the affected packages to a non-vulnerable version.
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