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answering

Deltawren is answering right now. Last checked 4 min ago. It exposes 2 tools.

Daily data feeds MCP: CISA KEV+EPSS, SEC Form 4, 10-K sections, domain ranks. Keys $19/mo.

Uptime history 23 hours of history
23 hours agonow
100.0%
Uptime 24h
87 of 87 checks
2
Tools
read from the server
104 ms
Response time
average over 24h
open, no key
Access
streamable-http

Nothing serious here today

Today is the operative word: we check Deltawren every 15 minutes and re-read its code on every release. Watch it and you find out the day that stops being true.

Three servers free · no card

Connect this server

Endpoint below is the one we actually reach during checks — not the one copied from a README. Last verified 4 min ago.

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

Available tools 2

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

feed
feed_changes
Rows added, removed and changed per file in one feed since the previous daily build.
feed_list
Every Deltawren daily data feed: source dataset, refresh cadence, history kept, manifest URL and plans.

Endpoints

URLTransportStateLatencyChecked
https://deltawren.cybermaxtools.com/mcp?via=mcp-registry streamable-http answering 80 ms 4 min ago

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Deltawren — questions

Answers built from our own checks of this server.

What can Deltawren do?
It exposes 2 tools, read directly from the server on our last check. Among them: feed_changes, feed_list. 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 Deltawren working right now?
We send a real MCP handshake every 15 minutes. Over the last 24 hours 87 of 87 checks got a reply (100.0%), average response time 104 ms. The bar chart above shows every period we have measured.
How do I connect Deltawren?
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 Deltawren need an API key?
No. Deltawren completed a full MCP handshake with us as an anonymous client and listed its tools without asking for anything. All 2 of them are readable on this page. This is what we observed, not what the docs claim.
How fast is Deltawren?
It answers our handshake in 104 ms on average, which is faster than 83% of all working MCP servers we measure. That puts it in the quick quarter of the ecosystem. The comparison comes from our own checks across the whole registry, every 15 minutes.