mcpbeat

Longwatch MCP Server

dev.coinop/longwatch
answering

Longwatch is answering right now. Last checked 13 min ago. It exposes 5 tools.

Watch web pages, RSS, crypto prices and SEC filings; poll one endpoint for alerts. USDC per call.

Uptime history 40 hours of history
40 hours agonow
100.0%
Uptime 24h
91 of 91 checks
5
Tools
read from the server
573 ms
Response time
average over 24h
open, no key
Access
streamable-http

Connect this server

Endpoint below is the one we actually reach during checks — not the one copied from a README. Last verified 13 min ago.

run in your terminal
claude mcp add longwatch --transport http https://longwatch.dev/mcp
~/Library/Application Support/Claude/claude_desktop_config.json
{
  "mcpServers": {
    "longwatch": {
      "url": "https://longwatch.dev/mcp"
    }
  }
}
~/.codex/config.toml
[mcp_servers.longwatch]
url = "https://longwatch.dev/mcp"
.cursor/mcp.json
{
  "mcpServers": {
    "longwatch": {
      "url": "https://longwatch.dev/mcp"
    }
  }
}
.vscode/mcp.json
{
  "mcpServers": {
    "longwatch": {
      "url": "https://longwatch.dev/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.

poll
poll_alerts
Poll a watch for alerts since a cursor. Pass since={last seq you saw}; the response carries a new cursor. Polling keeps the watch alive. Costs $0.001 USDC per call via x402 (Base or Solana) — no API key, no account. Calling without payment returns 402 with the payment requirements. Free alternative: POST https://longwatch.dev/try (REST) or the try_watch MCP tool — one free 24h watch, no wallet needed.
poll_trial
Poll a trial watch created by try_watch. Free. Pass since={last seq you saw}; the response carries a new cursor. Once the trial expires, create a paid watch with create_watch for the same behaviour without a time limit. Free — no payment required.
watch
create_watch
Create a standing watch. Types: url (page text diff), rss (new feed items), price (crypto threshold/24h-move via CoinGecko id), edgar (new SEC filings by ticker+forms — 8-K item codes decoded, Form 4 insider trades parsed into who bought/sold, how much, and whether scheduled). Returns watch_id, key, and the poll URL. Costs $0.005 USDC per call via x402 (Base or Solana) — no API key, no account. Calling without payment returns 402 with the payment requirements. Free alternative: POST https://longwatch.dev/try (REST) or the try_watch MCP tool — one free 24h watch, no wallet needed.
delete_watch
Stop and delete a watch. Free. Free — no payment required.
try
try_watch
Create a free trial watch — no payment, no wallet, no account. Same watch types as create_watch (url, rss, price, edgar). The trial runs for 24h, one at a time per caller, and cannot use webhooks. Use this first to see what the alerts look like before paying. Free — no payment required.

Endpoints

URLTransportStateLatencyChecked
https://longwatch.dev/mcp streamable-http answering 517 ms 13 min ago

Longwatch — questions

Answers built from our own checks of this server.

What can Longwatch do?
It exposes 5 tools, read directly from the server on our last check. Among them: create_watch, delete_watch, poll_alerts, poll_trial, try_watch. 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 →
What is Longwatch mostly used for?
Its tools cluster around watch and poll. That is what this server is built to work with — the grouping comes from the actual tool names, not from a category we assigned.
Is Longwatch working right now?
We send a real MCP handshake every 15 minutes. Over the last 24 hours 91 of 91 checks got a reply (100.0%), average response time 573 ms. The bar chart above shows every period we have measured.
How do I connect Longwatch?
Copy the ready config from this page — we generate it for Claude Code, Claude Desktop, Codex, Cursor and VS Code, each with the file path that client actually reads. It is a remote server, so there is nothing to install — the client connects to the address.
Does Longwatch need an API key?
No. Longwatch 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.
How fast is Longwatch?
It answers our handshake in 573 ms on average, which is faster than 18% of all working MCP servers we measure. That is on the slow side — worth knowing if the tool sits inside an interactive loop. The comparison comes from our own checks across the whole registry, every 15 minutes.