Signed Investors

Measured conclusion: Deep-tested. L2 outcome: tools_ok.

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

Add to your agent

Copy this into your MCP client config:

{
  "mcpServers": {
    "Signed Investors": {
      "url": "https://mcp.signed.com/investors",
      "transport": "streamable-http"
    }
  }
}

Measured tools (7)

• search_investors read-only

  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.

  Parameters:

  • q (required) — string — Search text, matched against name, login, bio, investment description, and sector names and slugs.
  • page — integer — 1-indexed page number (default 1).
  • sector — string — Only investors who list this sector. Takes the slug (devtools, fintech, health); list_sectors has the full set with names.
  • per_page — integer — Results per page (default 30, max 100).
  • check_size — string — Only investors writing checks in this range. Takes the slug (10k-25k) or the label ($10K-$25K); list_check_sizes has both.

  Hints: read-only yes · destructive no · idempotent yes · open-world no

• list_investors read-only

  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.

  Parameters:

  • page — integer — 1-indexed page number (default 1).
  • sector — string — Only investors who list this sector. Takes the slug (devtools, fintech, health); list_sectors has the full set with names.
  • per_page — integer — Results per page (default 30, max 100).
  • check_size — string — Only investors writing checks in this range. Takes the slug (10k-25k) or the label ($10K-$25K); list_check_sizes has both.

  Hints: read-only yes · destructive no · idempotent yes · open-world no

• get_investor read-only

  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.

  Parameters:

  • login (required) — string — The investor's login, with or without the leading @.

  Hints: read-only yes · destructive no · idempotent yes · open-world no

• list_investor_followers read-only

  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.

  Parameters:

  • login (required) — string — The investor's login, with or without the leading @.
  • page — integer — 1-indexed page number (default 1).
  • per_page — integer — Results per page (default 30, max 100).

  Hints: read-only yes · destructive no · idempotent yes · open-world no

• list_investor_following read-only

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

  Parameters:

  • login (required) — string — The investor's login, with or without the leading @.
  • page — integer — 1-indexed page number (default 1).
  • per_page — integer — Results per page (default 30, max 100).

  Hints: read-only yes · destructive no · idempotent yes · open-world no

• list_sectors read-only

  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.

  Hints: read-only yes · destructive no · idempotent yes · open-world no

• list_check_sizes read-only

  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.

  Hints: read-only yes · destructive no · idempotent yes · open-world no

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