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Signals MCP Server

by datahyena Your server? Claim it
answering

Signals is answering right now. Last checked 13 min ago. It exposes 11 tools.

Deduplicated, entity-resolved funding rounds, acquisitions, and exec moves as MCP tools.

Uptime history 51 days of history · worst day 96%
51 days agonow
98.9%
Uptime 24h
90 of 91 checks
11
Tools
read from the server
406 ms
Response time
average over 24h
open, no key
Access
streamable-http

What changed 31

Every tool that appeared, vanished or quietly changed what it asks for. Recorded since 9 August 2026. No other catalogue keeps this.

14 Sep a tool changed the parameters it asks for funding_events
4 Sep a tool changed the parameters it asks for funding_events
27 Aug 5 tools changed the parameters they ask for7 times that day acquisitions, companies, exec_moves and 2 more
26 Aug 5 tools changed the parameters they ask for10 times that day acquisitions, companies, exec_moves and 2 more
20 Aug 4 tools changed the parameters they ask for9 times that day acquisitions, companies, exec_moves and 1 more
20 Aug a tool description was rewritten companies
9 Aug 2 tools changed the parameters they ask for acquisitions, funding_events
and 12 more, back to 9 August 2026

Signals does not always answer

Over the last week it answered 98.9% of our checks. We check every 15 minutes, so you hear about the next outage within the hour — not from your users.

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 13 min ago.

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

Available tools 11

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

watchlist
add_to_watchlist
Add companies (domain, name, LinkedIn URL, or id) to a watchlist. Returns a per-item result of added, already_present, or unresolved. Free.
create_watchlist
Create a named account watchlist. Free.
get_watchlist
Return one watchlist with its resolved company members. Free.
acquisitions
acquisitions
List acquisition and merger events ordered by announcement date, newest first. Filter by payment type, deal amount range, merger flag, or a company that is the acquirer or target. Costs one credit per returned record.
companies
companies
Search and filter company records by keyword, exact domain, HQ country, industry group, NAICS code, employee-count bucket, or founded-year range. Costs one credit per returned record.
company
company_timeline
Return one company's timeline: firmographics, investors, and a chronological list of funding rounds, acquisitions, and executive moves. Resolve the company by id, domain, name, or LinkedIn URL. Pick event kinds with include (default all). Costs one credit for the company plus one per pulled event; nothing is charged if no company matches.
exec
exec_moves
List executive appointment, promotion, departure, and transition events ordered by announcement date, newest first. Filter by company, person, role seniority, move type, or a time window. Costs one credit per returned record.
from
remove_from_watchlist
Remove companies from a watchlist. Free.
funding
funding_events
List funding events ordered by announcement date, newest first. Filter by round, amount range, company HQ country, industry group, or a specific company id. Costs one credit per returned record.
investors
investors
Search and filter investor records by keyword, type, HQ country, or exact domain. Costs one credit per returned record.
watchlists
list_watchlists
List the workspace's account watchlists with member counts. Free.

Endpoints

URLTransportStateLatencyChecked
https://api.datahyena.com/mcp streamable-http answering 246 ms 13 min ago

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Signals — questions

Answers built from our own checks of this server.

What can Signals do?
It exposes 11 tools, read directly from the server on our last check. Among them: acquisitions, add_to_watchlist, companies, company_timeline, create_watchlist, exec_moves and 5 more. 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 Signals working right now?
We send a real MCP handshake every 15 minutes. Over the last 24 hours 90 of 91 checks got a reply (98.9%), average response time 406 ms. The bar chart above shows every period we have measured.
How do I connect Signals?
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 Signals need an API key?
No. Signals completed a full MCP handshake with us as an anonymous client and listed its tools without asking for anything. All 11 of them are readable on this page. This is what we observed, not what the docs claim.
How fast is Signals?
It answers our handshake in 406 ms on average, which is faster than 39% of all working MCP servers we measure. The comparison comes from our own checks across the whole registry, every 15 minutes.