# Signed Investors (remote · mcp.signed.com)

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

- Trust score: 74/100 (medium)
- Registry status: active
- Liveness: live
- Owner verified: no
- Last scored: 2026-09-26

## Components

- remote · `mcp.signed.com`: 74/100 (this document), [markdown](https://verifymcp.io/servers/com-signed-investors/investors.md), [page](https://verifymcp.io/servers/com-signed-investors/investors)

## Channel facts

- Endpoint: `https://mcp.signed.com/investors`
- Transports: `streamable-http`
- Auth: `none`
- Version: `1.0.0`

## Trust breakdown

How this component scores in each security and reliability category. Every signal is checked automatically against the live server, and we only credit what we can confirm. Scores are 0–100 per category. Scoring method: https://verifymcp.io/docs/scoring (what has changed: https://verifymcp.io/docs/scoring/changelog)

Scored 2026-09-26.

- **Endpoint Security**: 80/100
  - The endpoint's TLS certificate is valid, in date, and uses a strong key.
  - No authorisation is required to call this server. Every tool declares its destructiveHint and none is destructive, so open access doesn't expose one.
  - HTTPS is enforced; there's no plaintext access path.
  - The HSTS (Strict-Transport-Security) header is present.
  - DNSSEC check failed: this domain isn't protected by DNSSEC.
- **Transport & Reachability**: 100/100
  - Verified streamable-http transport via a live MCP handshake.
- **Schema Quality & AI Usability**: 75/100
  - AI-judged instruction clarity (excellent).
  - Context-footprint check failed: tool/resource definitions use about 1173 tokens (~167/item across 7 items; 7 tools + 0 resources), over budget; trim descriptions and params.
  - Usage-examples check failed: none of the tools include examples.
- **Stability & Change Management**: 7/100
  - Stability observed for 2 of 30 days with no destabilising changes; credit accrues until the full window elapses.
- **Tool Coverage**: 100/100
  - 100% of tools have a non-trivial description (not blank, and not just the tool's name).
  - 100% of tool parameters carry a description.
- **Tool Safety**: 100/100
  - No prompt-injection markers were found in the server instructions, tool names or descriptions we captured.
  - We read all 7 captured tool definition(s), and no name or description among them implies an irreversible operation.
  - An AI judge read all 8 captured unit(s) of tool text and found none that tries to manipulate the model reading it.
- **Capabilities**: 100/100
  - Implements a current MCP spec version (2026-07-28).

## Install

### How do I install the Signed Investors MCP server?

Signed Investors is a hosted endpoint at https://mcp.signed.com/investors, so there is nothing to install locally. Ready-made configuration for Claude, Cursor, VS Code, Codex and 5 more is on this page, copied from each client's own documentation.

### Claude

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

### Cursor

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

### VS Code

```json
{
  "servers": {
    "com-signed-investors": {
      "type": "http",
      "url": "https://mcp.signed.com/investors"
    }
  }
}
```

### Codex

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

### opencode

```json
{
  "$schema": "https://opencode.ai/config.json",
  "mcp": {
    "com-signed-investors": {
      "type": "remote",
      "url": "https://mcp.signed.com/investors",
      "enabled": true
    }
  }
}
```

### OpenClaw

```bash
openclaw mcp add com-signed-investors --url 'https://mcp.signed.com/investors' --transport streamable-http
```

### Hermes

```yaml
mcp_servers:
  com-signed-investors:
    url: "https://mcp.signed.com/investors"
```

### Netclaw

```json
{
  "McpServers": {
    "com-signed-investors": {
      "Transport": "http",
      "Url": "https://mcp.signed.com/investors"
    }
  }
}
```

### Vellum

```bash
assistant mcp add com-signed-investors -t streamable-http -u 'https://mcp.signed.com/investors'
```

### Other

```json
{
  "mcpServers": {
    "com-signed-investors": {
      "type": "http",
      "url": "https://mcp.signed.com/investors"
    }
  }
}
```

The mcpServers block is a cross-client convention. Remote transports vary, so check your client's docs.

## Changelog

Every change recorded for this component, newest first. Days that predate change tracking, or that we cannot explain, say so: "we were watching and nothing happened" and "we were not watching" are different claims.

### 2026-09-25 (score 74, 0)

- [functional] We updated how we score, so this day's move reflects our rubric, not a change to the server

### 2026-09-24 (score 74)

First indexed and scored.

## MCP tools (7)

### `search_investors` (~231 tokens)

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 parameters:

- `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.
- `page` (integer): 1-indexed page number (default 1).
- `per_page` (integer): Results per page (default 30, max 100).
- `q` (string, required): Search text, matched against name, login, bio, investment description, and sector names and slugs.
- `sector` (string): Only investors who list this sector. Takes the slug (devtools, fintech, health); list_sectors has the full set with names.

### `list_investors` (~200 tokens)

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 parameters:

- `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.
- `page` (integer): 1-indexed page number (default 1).
- `per_page` (integer): Results per page (default 30, max 100).
- `sector` (string): Only investors who list this sector. Takes the slug (devtools, fintech, health); list_sectors has the full set with names.

### `get_investor` (~109 tokens)

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 parameters:

- `login` (string, required): The investor's login, with or without the leading @.

### `list_investor_followers` (~99 tokens)

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 parameters:

- `login` (string, required): 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).

### `list_investor_following` (~98 tokens)

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 parameters:

- `login` (string, required): 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).

### `list_sectors` (~61 tokens)

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.

### `list_check_sizes` (~53 tokens)

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.

## Diagnostics

Captured diagnostic sections: TLS, DNSSEC, Authorisation, Transports. The full working is on the page: https://verifymcp.io/servers/com-signed-investors/investors#diagnostics

## Score history

- 2026-09-26: 74
- 2026-09-25: 74
- 2026-09-24: 74

## Common questions

### What is the Signed Investors MCP server?

Signed Investors is an MCP server listed in the public MCP registry as com.signed/investors. Search Signed's public angel investor directory by sector, check size, or keyword. No login needed. This page covers its hosted endpoint (https://mcp.signed.com/investors).

### Is the Signed Investors MCP server safe to use?

Signed Investors scores 74 out of 100 on VerifyMCP. That is a record of what we were able to check automatically, not an endorsement. The category breakdown on this page shows every signal behind the number, including the ones we could not confirm.

### What tools does the Signed Investors MCP server expose?

Signed Investors exposes 7 tools: search_investors, list_investors, get_investor, list_investor_followers, list_investor_following, and 2 more. Their descriptions and schemas cost roughly 851 tokens of context every time the server is loaded.

### Does the Signed Investors MCP server require authentication?

No. We connected to Signed Investors without credentials and it answered, so anything it exposes is reachable by anyone who knows the address.

### Is the Signed Investors MCP server still maintained?

Signed Investors is still listed as active in the MCP registry. We last reached this channel on 26 September 2026. Those dates come from our own scans of the registry and the channel itself, not from anything the publisher announced.

## Links

- Remote endpoint: https://mcp.signed.com/investors
- Website: https://mcp.signed.com/investors
- Changelog RSS feed: https://verifymcp.io/servers/com-signed-investors/investors.xml
- Changelog JSON feed: https://verifymcp.io/servers/com-signed-investors/investors.json
- HTML version of this page: https://verifymcp.io/servers/com-signed-investors/investors