Signed Investors
Search Signed's public angel investor directory by sector, check size, or keyword. No login needed.
Should I use this
Quality & Safety
Based on automated analysis of tool definitions and protocol compliance.
Context Cost
This is the approximate number of tokens consumed each time the server's tools are loaded into a model's context. Higher counts reduce the attention available for other tasks.
Install
One-Click Install
Add this to your `claude_desktop_config.json` file:
{
"mcpServers": {
"investors": {
"url": "https://mcp.signed.com/investors"
}
}
}Remote endpoints
https://mcp.signed.com/investorsstreamable-httpWhat it can do
Tool inventory
Tools (7)
🟢search_investors(q, sector, check_size, page, per_page)
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.
Input Schema
{
"type": "object",
"properties": {
"q": {
"type": "string",
"description": "Search text, matched against name, login, bio, investment description, and sector names and slugs."
},
"sector": {
"type": "string",
"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"
],
"description": "Only investors who list this sector. Takes the slug (devtools, fintech, health); list_sectors has the full set with names."
},
"check_size": {
"type": "string",
"description": "Only investors writing checks in this range. Takes the slug (10k-25k) or the label ($10K-$25K); list_check_sizes has both."
},
"page": {
"type": "integer",
"description": "1-indexed page number (default 1)."
},
"per_page": {
"type": "integer",
"description": "Results per page (default 30, max 100)."
}
},
"required": [
"q"
],
"$schema": "https://json-schema.org/draft/2020-12/schema",
"additionalProperties": false
}🟢list_investors(sector, check_size, page, per_page)
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.
Input Schema
{
"type": "object",
"properties": {
"sector": {
"type": "string",
"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"
],
"description": "Only investors who list this sector. Takes the slug (devtools, fintech, health); list_sectors has the full set with names."
},
"check_size": {
"type": "string",
"description": "Only investors writing checks in this range. Takes the slug (10k-25k) or the label ($10K-$25K); list_check_sizes has both."
},
"page": {
"type": "integer",
"description": "1-indexed page number (default 1)."
},
"per_page": {
"type": "integer",
"description": "Results per page (default 30, max 100)."
}
},
"required": [],
"$schema": "https://json-schema.org/draft/2020-12/schema",
"additionalProperties": false
}🟢get_investor(login)
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.
Input Schema
{
"type": "object",
"properties": {
"login": {
"type": "string",
"description": "The investor's login, with or without the leading @."
}
},
"required": [
"login"
],
"$schema": "https://json-schema.org/draft/2020-12/schema",
"additionalProperties": false
}🟢list_investor_followers(login, page, per_page)
Public Signed investors who follow the given investor, alphabetically by name. Only public profiles appear on either side, the same as signed.com/@login/followers.
Input Schema
{
"type": "object",
"properties": {
"login": {
"type": "string",
"description": "The investor's login, with or without the leading @."
},
"page": {
"type": "integer",
"description": "1-indexed page number (default 1)."
},
"per_page": {
"type": "integer",
"description": "Results per page (default 30, max 100)."
}
},
"required": [
"login"
],
"$schema": "https://json-schema.org/draft/2020-12/schema",
"additionalProperties": false
}🟢list_investor_following(login, page, per_page)
Public Signed investors the given investor follows, alphabetically by name. Only public profiles appear on either side, the same as signed.com/@login/following.
Input Schema
{
"type": "object",
"properties": {
"login": {
"type": "string",
"description": "The investor's login, with or without the leading @."
},
"page": {
"type": "integer",
"description": "1-indexed page number (default 1)."
},
"per_page": {
"type": "integer",
"description": "Results per page (default 30, max 100)."
}
},
"required": [
"login"
],
"$schema": "https://json-schema.org/draft/2020-12/schema",
"additionalProperties": false
}🟢list_sectors
The sectors an investor can list on their Signed profile — the valid values for the sector filter on list_investors and search_investors — with how many public investors list each, a one-line description, and example companies. Busiest sectors first.
Input Schema
{
"type": "object",
"properties": {},
"required": [],
"$schema": "https://json-schema.org/draft/2020-12/schema",
"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.
Input Schema
{
"type": "object",
"properties": {},
"required": [],
"$schema": "https://json-schema.org/draft/2020-12/schema",
"additionalProperties": false
}Community
Evidence