Signed Investors

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

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https://mcp.signed.com/investors

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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.

loginstring, required

The investor's login, with or without the leading @.

Tools (7)

get_investor

read-only

Argument	Type	Description
login*	string	The investor's login, with or without the leading @.

Input schema (JSON)

{
  "type": "object",
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "required": [
    "login"
  ],
  "properties": {
    "login": {
      "type": "string",
      "description": "The investor's login, with or without the leading @."
    }
  },
  "additionalProperties": false
}

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.

read-only

No arguments.

Input schema (JSON)

{
  "type": "object",
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "required": [],
  "properties": {},
  "additionalProperties": false
}

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.

read-only

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

Input schema (JSON)

{
  "type": "object",
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "required": [
    "login"
  ],
  "properties": {
    "page": {
      "type": "integer",
      "description": "1-indexed page number (default 1)."
    },
    "login": {
      "type": "string",
      "description": "The investor's login, with or without the leading @."
    },
    "per_page": {
      "type": "integer",
      "description": "Results per page (default 30, max 100)."
    }
  },
  "additionalProperties": false
}

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.

read-only

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

Input schema (JSON)

{
  "type": "object",
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "required": [
    "login"
  ],
  "properties": {
    "page": {
      "type": "integer",
      "description": "1-indexed page number (default 1)."
    },
    "login": {
      "type": "string",
      "description": "The investor's login, with or without the leading @."
    },
    "per_page": {
      "type": "integer",
      "description": "Results per page (default 30, max 100)."
    }
  },
  "additionalProperties": false
}

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.

read-only

Argument	Type	Description
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.

Input schema (JSON)

{
  "type": "object",
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "required": [],
  "properties": {
    "page": {
      "type": "integer",
      "description": "1-indexed page number (default 1)."
    },
    "sector": {
      "enum": [
        "devtools",
        "data",
        "security",
        "productivity",
        "marketing",
        "sales",
        "hr",
        "legal",
        "fintech",
        "crypto",
        "health",
        "education",
        "government",
        "defense",
        "hard-tech",
        "robotics",
        "space",
        "climate",
        "construction",
        "real-estate",
        "logistics",
        "ecommerce",
        "food",
        "travel",
        "media",
        "gaming",
        "social",
        "sports"
      ],
      "type": "string",
      "description": "Only investors who list this sector. Takes the slug (devtools, fintech, health); list_sectors has the full set with names."
    },
    "per_page": {
      "type": "integer",
      "description": "Results per page (default 30, max 100)."
    },
    "check_size": {
      "type": "string",
      "description": "Only investors writing checks in this range. Takes the slug (10k-25k) or the label ($10K-$25K); list_check_sizes has both."
    }
  },
  "additionalProperties": false
}

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.

read-only

No arguments.

Input schema (JSON)

{
  "type": "object",
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "required": [],
  "properties": {},
  "additionalProperties": false
}

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.

read-only

Argument	Type	Description
q*	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.

Input schema (JSON)

{
  "type": "object",
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "required": [
    "q"
  ],
  "properties": {
    "q": {
      "type": "string",
      "description": "Search text, matched against name, login, bio, investment description, and sector names and slugs."
    },
    "page": {
      "type": "integer",
      "description": "1-indexed page number (default 1)."
    },
    "sector": {
      "enum": [
        "devtools",
        "data",
        "security",
        "productivity",
        "marketing",
        "sales",
        "hr",
        "legal",
        "fintech",
        "crypto",
        "health",
        "education",
        "government",
        "defense",
        "hard-tech",
        "robotics",
        "space",
        "climate",
        "construction",
        "real-estate",
        "logistics",
        "ecommerce",
        "food",
        "travel",
        "media",
        "gaming",
        "social",
        "sports"
      ],
      "type": "string",
      "description": "Only investors who list this sector. Takes the slug (devtools, fintech, health); list_sectors has the full set with names."
    },
    "per_page": {
      "type": "integer",
      "description": "Results per page (default 30, max 100)."
    },
    "check_size": {
      "type": "string",
      "description": "Only investors writing checks in this range. Takes the slug (10k-25k) or the label ($10K-$25K); list_check_sizes has both."
    }
  },
  "additionalProperties": false
}