Signed Investors
Search Signed's public angel investor directory by sector, check size, or keyword. No login needed.
Connect it
Settings → Connectors → Add custom connector
URL: https://mcp.signed.com/investorsSettings → Apps & Connectors → Advanced → Developer mode
Create connector with URL: https://mcp.signed.com/investors{
"mcpServers": {
"investors": {
"url": "https://mcp.signed.com/investors"
}
}
}claude mcp add --transport http investors https://mcp.signed.com/investors{
"servers": {
"investors": {
"type": "http",
"url": "https://mcp.signed.com/investors"
}
}
}7 tools, verified live
search_investorsread-onlySearch 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.
list_investorsread-onlyBrowse 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.
get_investorread-onlyOne 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_followersread-onlyPublic 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_followingread-onlyPublic Signed investors the given investor follows, alphabetically by name. Only public profiles appear on either side, the same as signed.com/@login/following.
list_sectorsread-onlyThe 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.
list_check_sizesread-onlyThe 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.
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