npm Package Ws Has 241560546 Weekly Downloads But SDK MCP Server

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npm Package Ws Has 241560546 Weekly Downloads But SDK is listed as active in the registry but did not answer our last check. It exposes 5 tools. Last commit 3 Sep 2026.

Stateful WebSocket session registry with per-connection Shannon entropy delta tracking for schema di

Uptime history 90 days of history · worst day 0%

90 days agonow

0.0%

Uptime 24h

0 of 91 checks

Tools

read from the server

359 ms

Response time

average over 24h

Stars

last commit 3 Sep 2026

npm Package Ws Has 241560546 Weekly Downloads But SDK does not always answer

Over the last week it answered 36.8% of our checks. We check every 15 minutes, so you hear about the next outage within the hour — not from your users.

Connect this server

Endpoint below is the one we actually reach during checks — not the one copied from a README. Last verified 12 min ago.

Claude Code Claude Desktop Codex Cursor VS Code

run in your terminal

claude mcp add npm-package-ws-has-241560546-weekly-downloads-but-sdk --transport http https://npm-package-ws-has-241560546-w-production.up.railway.app/mcp

Settings → Connectors → Add custom connector, then paste this address

https://npm-package-ws-has-241560546-w-production.up.railway.app/mcp

~/.codex/config.toml

[mcp_servers.npm-package-ws-has-241560546-weekly-downloads-but-sdk]
url = "https://npm-package-ws-has-241560546-w-production.up.railway.app/mcp"

.cursor/mcp.json

{
  "mcpServers": {
    "npm-package-ws-has-241560546-weekly-downloads-but-sdk": {
      "url": "https://npm-package-ws-has-241560546-w-production.up.railway.app/mcp"
    }
  }
}

.vscode/mcp.json

{
  "servers": {
    "npm-package-ws-has-241560546-weekly-downloads-but-sdk": {
      "type": "http",
      "url": "https://npm-package-ws-has-241560546-w-production.up.railway.app/mcp"
    }
  }
}

Available tools 5

Read directly from the server with tools/list, grouped by what they act on. If a tool disappears, we record the date.

nexus

nexus_npm_package_ws_has_241560546_weekly_down_close_websocket_session

Sends a WebSocket close frame with the specified status code, waits for the server close handshake, and removes the session from the registry. Returns a final telemetry snapshot. Use when a session is no longer needed. Do NOT use to temporarily pause a session -- the session_id is permanently deallocated after this call and cannot be reused.

nexus_npm_package_ws_has_241560546_weekly_down_drain_ws_frame_buffer

Returns up to max_frames buffered inbound frames received since the last drain (or session open), each annotated with its Shannon entropy delta and schema validation result. Use to poll for incoming messages without holding a blocking connection. Do NOT use as a real-time streaming mechanism -- it returns only frames already buffered.

nexus_npm_package_ws_has_241560546_weekly_down_inspect_ws_session_telemetry

Returns real-time telemetry for a session: connection state, frame counts, cumulative and rolling Shannon entropy statistics, schema violation rate, and uptime. Use to diagnose whether a stream is diverging from its expected schema or to verify a session is still alive before sending. Do NOT use as the primary liveness check in a tight loop.

nexus_npm_package_ws_has_241560546_weekly_down_open_websocket_session

Establishes a persistent WebSocket connection to a target URL and registers it in the stateful session registry. Returns a session_id for all subsequent operations. Use when an agent needs to initiate a long-lived connection before sending or receiving frames. Do NOT use to reconnect an already-open session -- call close_websocket_session first, or use the session_id of an existing session.

nexus_npm_package_ws_has_241560546_weekly_down_send_typed_ws_frame

Sends a single text or binary frame over an open session and returns the frame's Shannon entropy delta relative to the session baseline. Use for request-response patterns or publishing commands to a WebSocket server. Do NOT use to send a sequence of frames in bulk -- call this tool once per frame. Fails if session_id does not exist or connection is not in OPEN state.

Endpoints

URL	Transport	State	Latency	Checked
https://npm-package-ws-has-241560546-w-production.up.railway.app/mcp	streamable-http	answering	359 ms	12 min ago

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npm Package Ws Has 241560546 Weekly Downloads But SDK — questions

Answers built from our own checks of this server.

What can npm Package Ws Has 241560546 Weekly Downloads But SDK do?

It exposes 5 tools, read directly from the server on our last check. Among them: nexus_npm_package_ws_has_241560546_weekly_down_close_websocket_session, nexus_npm_package_ws_has_241560546_weekly_down_drain_ws_frame_buffer, nexus_npm_package_ws_has_241560546_weekly_down_inspect_ws_session_telemetry, nexus_npm_package_ws_has_241560546_weekly_down_open_websocket_session, nexus_npm_package_ws_has_241560546_weekly_down_send_typed_ws_frame. The full list with descriptions is on this page — we take it from the server itself via tools/list, not from a README. How MCP servers expose tools in the first place →

Is npm Package Ws Has 241560546 Weekly Downloads But SDK working right now?

We send a real MCP handshake every 15 minutes. Over the last 24 hours 0 of 91 checks got a reply (0.0%), average response time 359 ms. The bar chart above shows every period we have measured.

The registry lists npm Package Ws Has 241560546 Weekly Downloads But SDK as active — why does it not respond?

The official MCP registry stores what the author submitted; it does not verify that the server still runs. We check the endpoint ourselves, and this one does not answer. Catalogues that copy the registry without checking will show it as working.

How do I connect npm Package Ws Has 241560546 Weekly Downloads But SDK?

Copy the ready config from this page. We generate it for Claude Code, Claude Desktop, Codex, Cursor and VS Code, each in the form that client actually reads. It is a remote server, so there is nothing to install — the client connects to the address.

Does npm Package Ws Has 241560546 Weekly Downloads But SDK need an API key?

No. npm Package Ws Has 241560546 Weekly Downloads But SDK completed a full MCP handshake with us as an anonymous client and listed its tools without asking for anything. All 5 of them are readable on this page. This is what we observed, not what the docs claim.

Is npm Package Ws Has 241560546 Weekly Downloads But SDK open source?

We cannot say either way: written in Python and 0 stars on GitHub, but we could not determine the licence, and without one the code is not open source by default.