Signals is answering right now. Last checked 14 min ago. It exposes 13 tools.
Deduplicated, entity-resolved funding rounds, acquisitions, and exec moves as MCP tools.
Uptime history
91 days of history · worst day 95%
91 days agonow
100.0%
Uptime 24h
91 of 91 checks
13
Tools
read from the server
227 ms
Response time
average over 24h
open, no key
Access
streamable-http
What changed 48
Every tool that appeared, vanished or quietly changed what it asks for. Recorded since 9 August 2026. No other catalogue keeps this.
1 Nov
a tool changed the parameters it asks for
acquisitions
14 Oct
a tool changed the parameters it asks for2 times that day
hiring_signals
14 Oct
a tool appeared
company_hiring
13 Oct
2 tools changed the parameters they ask for
company_timeline, hiring_signals
13 Oct
a tool description was rewritten
company_timeline
13 Oct
a tool appeared
hiring_signals
29 Sep
5 tools changed the parameters they ask for9 times that day
acquisitions, companies, exec_moves and 2 more
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
and 29 more, back to 9 August 2026
Signals missed one check this week
Everything else answered, so this is steady rather than shaky. We check every 15 minutes, which is how a one-off gets told apart from the start of a pattern, and how you hear about the next one within the hour instead of 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 14 min ago.
run in your terminal
claude mcp add signals --transport http https://api.datahyena.com/mcpSettings → Connectors → Add custom connector, then paste this address
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
{
"servers": {
"signals": {
"type": "http",
"url": "https://api.datahyena.com/mcp"
}
}
}Available tools 13
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.
company
company_hiring
Return each company's hiring picture right now: open roles by role family and function, leadership and founding roles, tools its roles name, a hiring stance (building go-to-market, building leadership, scaling engineering, frozen, ...) and its hiring signals from the last 90 days. Takes up to 25 companies by domain, LinkedIn URL, id or name. Costs one credit per profile returned. A company we have not read yet comes back as building and is read straight away; ask again in a few minutes.
company_timeline
Return one company's timeline: firmographics, investors, and a chronological list of funding rounds, acquisitions, executive moves and hiring signals. 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.
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.
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.
hiring
hiring_signals
List hiring signals read from companies' own job boards, newest first: leadership openings, team build-outs, hiring surges and freezes, expansion into new countries and hard-to-fill roles. Each signal carries the roles behind it. Filter by type, function, seniority, company or a time window. Costs one credit per returned signal.
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
| URL | Transport | State | Latency | Checked |
|---|---|---|---|---|
| https://api.datahyena.com/mcp | streamable-http | answering | 240 ms | 14 min ago |
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Signals — questions
Answers built from our own checks of this server.
What can Signals do?
It exposes 13 tools, read directly from the server on our last check. Among them: acquisitions, add_to_watchlist, companies, company_hiring, company_timeline, create_watchlist and 7 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 →
What is Signals mostly used for?
Its tools cluster around watchlist and company. 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 Signals 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 227 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 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 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 13 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 227 ms on average, which is faster than 60% of all working MCP servers we measure. The comparison comes from our own checks across the whole registry, every 15 minutes.