# moatshark (remote · www.moatshark.com)

Holdings of great value investors: 13Fs, overseas stakes a 13F misses, 5% stakes, insider buys

- Trust score: 73/100 (medium)
- Registry status: active
- Liveness: live
- Owner verified: no
- Last scored: 2026-11-04

## Components

- remote · `www.moatshark.com`: 73/100 (this document), [markdown](https://verifymcp.io/servers/sharkey1982-moatshark/www.md), [page](https://verifymcp.io/servers/sharkey1982-moatshark/www)

## Channel facts

- Endpoint: `https://www.moatshark.com/mcp`
- Transports: `streamable-http`
- Auth: `none`
- Version: `1.1.0`

## 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 2026-11-04.

- **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**: 72/100
  - AI-judged instruction clarity (good).
  - Tool/resource definitions use about 673 tokens (~84/item across 8 items; 8 tools + 0 resources), lean.
  - Usage-examples check failed: none of the tools include examples.
- **Stability & Change Management**: 0/100
  - Stability not yet verified: not enough scan history yet (needs a 30-day window).
- **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 8 captured tool definition(s), and no name or description among them implies an irreversible operation.
  - An AI judge read all 9 captured unit(s) of tool text and found none that tries to manipulate the model reading it.
- **Capabilities**: 100/100
  - Implements a supported MCP spec version (2025-11-25); the latest is 2026-07-28.

**Unverified: 1 category.** A category scored 0 because we could not verify it: authentication we do not have, an unreachable endpoint, or not enough scan history. We only credit what we can confirm.

## Install

### How do I install the moatshark MCP server?

moatshark is a hosted endpoint at https://www.moatshark.com/mcp, 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 sharkey1982-moatshark 'https://www.moatshark.com/mcp'
```

### Cursor

```json
{
  "mcpServers": {
    "sharkey1982-moatshark": {
      "url": "https://www.moatshark.com/mcp"
    }
  }
}
```

### VS Code

```json
{
  "servers": {
    "sharkey1982-moatshark": {
      "type": "http",
      "url": "https://www.moatshark.com/mcp"
    }
  }
}
```

### Codex

```toml
[mcp_servers.sharkey1982-moatshark]
url = "https://www.moatshark.com/mcp"
```

### opencode

```json
{
  "$schema": "https://opencode.ai/config.json",
  "mcp": {
    "sharkey1982-moatshark": {
      "type": "remote",
      "url": "https://www.moatshark.com/mcp",
      "enabled": true
    }
  }
}
```

### OpenClaw

```bash
openclaw mcp add sharkey1982-moatshark --url 'https://www.moatshark.com/mcp' --transport streamable-http
```

### Hermes

```yaml
mcp_servers:
  sharkey1982-moatshark:
    url: "https://www.moatshark.com/mcp"
```

### Netclaw

```json
{
  "McpServers": {
    "sharkey1982-moatshark": {
      "Transport": "http",
      "Url": "https://www.moatshark.com/mcp"
    }
  }
}
```

### Vellum

```bash
assistant mcp add sharkey1982-moatshark -t streamable-http -u 'https://www.moatshark.com/mcp'
```

### Other

```json
{
  "mcpServers": {
    "sharkey1982-moatshark": {
      "type": "http",
      "url": "https://www.moatshark.com/mcp"
    }
  }
}
```

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.

### 2026-11-04 (score 73)

First indexed and scored.

## MCP tools (8)

### `search` (~70 tokens)

Search managers and companies

Find value investors (managers) and companies on moatshark by name, person or ticker. Returns slugs for get_manager and get_company, and results with ids for fetch.

Input parameters:

- `query` (string, required): Name, person or ticker, e.g. 'Buffett', 'Fundsmith', 'KO'

### `get_manager` (~140 tokens)

Get a value investor's holdings

Everything moatshark has on one value investor: its latest 13F (holdings, weights, change from the previous quarter), the overseas stakes a 13F never shows (from regulators in Japan, the UK, the Netherlands, France, Germany and Spain, with estimated values), its US funds' non-US holdings (N-PORT), 5% stake filings, Form 4 purchases since the 13F, and when it usually files.

Input parameters:

- `limit` (integer): Holdings to return (default 25, max 100)
- `slug` (string, required): Manager slug from search, e.g. 'berkshire-hathaway'

### `get_company` (~62 tokens)

Get who owns a company

Which value investors hold a company, how their holdings changed, its directors' recent share purchases and sales (Form 4), and basic SEC company facts.

Input parameters:

- `slug` (string, required): Company slug from search, usually the lower-case ticker, e.g. 'ko'

### `latest_filings` (~50 tokens)

Latest 13F filings

The newest 13F filings from the managers on moatshark, with each one's biggest buys and sales.

Input parameters:

- `limit` (integer): Filings to return (default 15, max 60)

### `quarter_roundup` (~54 tokens)

Quarter round-up

What the managers owned, bought and sold in one quarter (from 2013 Q1). Omit the quarter for the latest one being filed.

Input parameters:

- `quarter` (string): e.g. '2026-q2'

### `filing_forecast` (~84 tokens)

13F filing forecast

When the managers file their 13Fs: the deadline for the quarter being filed, who has filed so far, who is expected on each remaining day (from each manager's last eight quarters), and who is later than usual. Give a slug for one manager's habit and history.

Input parameters:

- `slug` (string): Optional manager slug, e.g. 'pershing-square'

### `fetch` (~56 tokens)

Fetch one record

The full record for one id from search (e.g. 'manager:berkshire-hathaway' or 'company:ko'), as text with its moatshark url.

Input parameters:

- `id` (string, required): An id from search results

### `insider_buying` (~46 tokens)

Insider buying (Form 4)

Open-market share purchases reported on Form 4 in the last 90 days: by the value investors themselves (as 10% owners) and by companies' own directors and officers.

## Diagnostics

Captured diagnostic sections: TLS, DNSSEC, Authorisation, Transports. The full working is on the page: https://verifymcp.io/servers/sharkey1982-moatshark/www#diagnostics

## Score history

- 2026-11-04: 73

## Common questions

### What is the moatshark MCP server?

moatshark is an MCP server listed in the public MCP registry as io.github.sharkey1982/moatshark. Holdings of great value investors: 13Fs, overseas stakes a 13F misses, 5% stakes, insider buys. This page covers its hosted endpoint (https://www.moatshark.com/mcp).

### Is the moatshark MCP server safe to use?

moatshark scores 73 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 moatshark MCP server expose?

moatshark exposes 8 tools: search, get_manager, get_company, latest_filings, quarter_roundup, and 3 more. Their descriptions and schemas cost roughly 562 tokens of context every time the server is loaded.

### Does the moatshark MCP server require authentication?

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

### Is the moatshark MCP server still maintained?

moatshark is still listed as active in the MCP registry. We last reached this channel on 4 November 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://www.moatshark.com/mcp
- Changelog RSS feed: https://verifymcp.io/servers/sharkey1982-moatshark/www.xml
- Changelog JSON feed: https://verifymcp.io/servers/sharkey1982-moatshark/www.json
- HTML version of this page: https://verifymcp.io/servers/sharkey1982-moatshark/www