Signed Investors MCP Server

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answering

Signed Investors is answering right now. Last checked 6 min ago. It exposes 7 tools.

Search Signed's public angel investor directory by sector, check size, or keyword. No login needed.

Uptime history 18 days of history

18 days agonow

100.0%

Uptime 24h

92 of 92 checks

Tools

read from the server

653 ms

Response time

average over 24h

open, no key

Access

streamable-http

Nothing serious here today

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

Connect this server

Endpoint below is the one we actually reach during checks — not the one copied from a README. Last verified 6 min ago.

Claude Code Claude Desktop Codex Cursor VS Code

run in your terminal

claude mcp add investors --transport http https://mcp.signed.com/investors

~/Library/Application Support/Claude/claude_desktop_config.json

{
  "mcpServers": {
    "investors": {
      "url": "https://mcp.signed.com/investors"
    }
  }
}

~/.codex/config.toml

[mcp_servers.investors]
url = "https://mcp.signed.com/investors"

.cursor/mcp.json

{
  "mcpServers": {
    "investors": {
      "url": "https://mcp.signed.com/investors"
    }
  }
}

.vscode/mcp.json

{
  "mcpServers": {
    "investors": {
      "url": "https://mcp.signed.com/investors"
    }
  }
}

Available tools 7

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

investor

get_investor

One angel investor's public Signed profile by login: bio, investment description, sectors, check size, links, the portfolio companies they've pinned, whether (and where) they take pitches from founders, follower counts, and a few similar investors. Logins come from search_investors or list_investors, or from a signed.com/@login URL. Private profiles are indistinguishable from nonexistent ones.

list_investor_followers

Public Signed investors who follow the given investor, alphabetically by name. Only public profiles appear on either side, the same as signed.com/@login/followers.

list_investor_following

Public Signed investors the given investor follows, alphabetically by name. Only public profiles appear on either side, the same as signed.com/@login/following.

investors

list_investors

Browse Signed's public angel investor directory: every investor with a public profile, most complete profiles first, optionally narrowed to one sector or one check size. Each result carries the investor's login (for get_investor), what they invest in, the checks they write, their pinned portfolio companies, and whether they take pitches. Use search_investors when you have a name or a keyword.

search_investors

Search Signed's public angel investor directory by keyword: a name, a login, or a word from an investor's bio or investment description ("climate", "former founder", "pre-seed"). A query that names a sector also matches investors who list that sector. Only public profiles are searched. Add sector or check_size to narrow the hits; use list_investors to browse a facet without a keyword.

sectors

list_sectors

The sectors an investor can list on their Signed profile — the valid values for the sector filter on list_investors and search_investors — with how many public investors list each, a one-line description, and example companies. Busiest sectors first.

sizes

list_check_sizes

The check-size ranges an investor can list on their Signed profile — the valid values for the check_size filter on list_investors and search_investors — smallest to largest, with how many public investors write each.

Endpoints

URL	Transport	State	Latency	Checked
https://mcp.signed.com/investors	streamable-http	answering	348 ms	6 min ago

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Signed Investors — questions

Answers built from our own checks of this server.

What can Signed Investors do?

It exposes 7 tools, read directly from the server on our last check. Among them: get_investor, list_check_sizes, list_investor_followers, list_investor_following, list_investors, list_sectors and 1 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 Signed Investors mostly used for?

Its tools cluster around investor and investors. 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 Signed Investors working right now?

We send a real MCP handshake every 15 minutes. Over the last 24 hours 92 of 92 checks got a reply (100.0%), average response time 653 ms. The bar chart above shows every period we have measured.

How do I connect Signed Investors?

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 Signed Investors need an API key?

No. Signed Investors completed a full MCP handshake with us as an anonymous client and listed its tools without asking for anything. All 7 of them are readable on this page. This is what we observed, not what the docs claim.

How fast is Signed Investors?

It answers our handshake in 653 ms on average, which is faster than 16% 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.