# 404.directory (npm · @mmvv1638/404-directory-mcp)

Risk preflight for AI Agent tool actions and Polymarket settlement and execution checks.

- Trust score: 50/100 (low)
- Change this week: 0
- Registry status: active
- Liveness: live
- Owner verified: no
- Last scored: 2026-09-27

## Components

- remote · `404.directory`: 24/100, [markdown](https://verifymcp.io/servers/mm-sheng-404-directory/404.md), [page](https://verifymcp.io/servers/mm-sheng-404-directory/404)
- npm · `@mmvv1638/404-directory-mcp`: 50/100 (this document), [markdown](https://verifymcp.io/servers/mm-sheng-404-directory/mmvv1638-404-directory-mcp.md), [page](https://verifymcp.io/servers/mm-sheng-404-directory/mmvv1638-404-directory-mcp)

## Channel facts

- Registry: `npm`
- Package: `@mmvv1638/404-directory-mcp`
- Version: `0.10.3`
- Transport: `stdio`

## Trust breakdown

How this component scores in each security and reliability category. Every signal is checked automatically from public evidence about the published package, including repeated runs of it in an isolated sandbox, 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 2026-09-27.

- **Supply Chain Security**: 100/100
  - No malware found by supply-chain analysis.
  - No known CVEs affecting this package version or its production dependencies.
  - No install/post-install scripts declared.
  - No production dependencies, so there is no dependency health to assess.
- **Provenance & Transparency**: 100/100
  - Source repository is publicly reachable at the declared URL.
  - Cryptographically verified build provenance (signed, bound to MM-sheng/404-directory).
  - Clear OSI-approved license (MIT).
  - Actively maintained (last published 27 days ago).
  - Publishes a security disclosure policy (SECURITY.md).
- **Schema Quality & AI Usability**: 0/100
  - Schema quality not yet verified: this package installed, but its server did not start, so we have no schema to assess.
- **Stability & Change Management**: 0/100
  - Stability not yet verified: this package installed, but its server did not start, so we have no schema to compare.
- **Tool Coverage**: 0/100
  - Tool coverage not yet verified: this package installed, but its server did not start, so we have no tool definitions to assess.
- **Tool Safety**: 0/100
  - Tool safety not yet verified: this package installed, but its server did not start, so we have no tool text to scan.
- **Capabilities**: 0/100
  - Protocol version not yet verified: this package installed, but its server did not start, so we never saw its MCP handshake.

**Unverified: 5 categories.** Categories scored 0 because our sandbox has not given us the schema these checks need to read. That is a gap on our side rather than a finding about the package, and we only credit what we can confirm, so the score stands at 0 until the capture succeeds. We are working through the fleet, so this normally clears without any action from you.

## Install

### How do I install the 404.directory MCP server?

404.directory runs locally as an npm package, launched with npx -y @mmvv1638/404-directory-mcp. 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 mm-sheng-404-directory -- npx -y @mmvv1638/404-directory-mcp
```

### Cursor

```json
{
  "mcpServers": {
    "mm-sheng-404-directory": {
      "command": "npx",
      "args": [
        "-y",
        "@mmvv1638/404-directory-mcp"
      ]
    }
  }
}
```

### VS Code

```json
{
  "servers": {
    "mm-sheng-404-directory": {
      "command": "npx",
      "args": [
        "-y",
        "@mmvv1638/404-directory-mcp"
      ]
    }
  }
}
```

### Codex

```bash
codex mcp add mm-sheng-404-directory -- npx -y @mmvv1638/404-directory-mcp
```

### opencode

```json
{
  "$schema": "https://opencode.ai/config.json",
  "mcp": {
    "mm-sheng-404-directory": {
      "type": "local",
      "command": [
        "npx",
        "-y",
        "@mmvv1638/404-directory-mcp"
      ],
      "enabled": true
    }
  }
}
```

### OpenClaw

```bash
openclaw mcp add mm-sheng-404-directory --command npx --arg -y --arg @mmvv1638/404-directory-mcp
```

### Hermes

```yaml
mcp_servers:
  mm-sheng-404-directory:
    command: "npx"
    args: ["-y", "@mmvv1638/404-directory-mcp"]
```

### Netclaw

```json
{
  "McpServers": {
    "mm-sheng-404-directory": {
      "Transport": "stdio",
      "Command": "npx",
      "Arguments": [
        "-y",
        "@mmvv1638/404-directory-mcp"
      ]
    }
  }
}
```

### Vellum

```bash
assistant mcp add mm-sheng-404-directory -t stdio -c npx -a -y @mmvv1638/404-directory-mcp
```

### Other

```json
{
  "mcpServers": {
    "mm-sheng-404-directory": {
      "command": "npx",
      "args": [
        "-y",
        "@mmvv1638/404-directory-mcp"
      ]
    }
  }
}
```

## 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 50, 0)

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

### 2026-08-30 (score 50, 0)

- [functional] Package version: 0.10.2 → 0.10.3

### 2026-08-29 (score 50)

- [functional] Package version: 0.10.1 → 0.10.2

### 2026-08-28 (score 0)

- [security improvement] Known CVEs: unverified → pass
- [functional improvement] Dependency health: unverified → pass

### 2026-08-27 (score 0)

- [security regression] Known CVEs: pass → unverified
- [functional regression] Dependency health: pass → unverified
- [functional] Package version: 0.9.3 → 0.10.1
- [functional] Package version: 0.9.3 → 0.10.0

### 2026-08-26 (score 0)

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

### 2026-08-25 (score 0)

- [security] Stability: Stability not yet verified: this package installed, but its server did not start, so we have no schema to compare.
- [functional] Tool coverage: Tool coverage not yet verified: this package installed, but its server did not start, so we have no tool definitions to assess.
- [functional] Schema quality: Schema quality not yet verified: this package installed, but its server did not start, so we have no schema to assess.
- [functional] Capabilities: Protocol version not yet verified: this package installed, but its server did not start, so we never saw its MCP handshake.

### 2026-08-24 (score 0)

- [security improvement] Malware scan: unverified → pass
- [security] Stability: Stability not yet verified: we do not have a sandbox capture of the MCP schema this version of the package serves yet.
- [functional] Tool coverage: Tool coverage not yet verified: we do not have a sandbox capture of the tool definitions this version of the package serves yet.
- [functional] Capabilities: Protocol version not yet verified: we do not have a sandbox capture of the MCP handshake this version of the package performs yet.
- [functional] Schema quality: Schema quality not yet verified: we do not have a sandbox capture of the MCP schema this version of the package serves yet.
- [functional] Package version: 0.9.2 → 0.9.3

## MCP tools (0)

Tools for package channels are captured by running the package in an isolated sandbox. The most recent sandbox run could not capture a tool list from this package.

## Diagnostics

Captured diagnostic sections: Provenance, Dependencies. The full working is on the page: https://verifymcp.io/servers/mm-sheng-404-directory/mmvv1638-404-directory-mcp#diagnostics

## Score history

- 2026-09-27: 50
- 2026-09-26: 50
- 2026-09-25: 50
- 2026-09-24: 50
- 2026-09-23: 50
- 2026-09-22: 50
- 2026-09-21: 50
- 2026-09-20: 50
- 2026-09-19: 50
- 2026-09-18: 50
- 2026-09-17: 50
- 2026-09-16: 50
- 2026-09-15: 50
- 2026-09-14: 50
- 2026-09-13: 50
- 2026-09-12: 50
- 2026-09-11: 50
- 2026-09-10: 50
- 2026-09-09: 50
- 2026-09-08: 50
- 2026-09-07: 50
- 2026-09-06: 50
- 2026-09-05: 50
- 2026-09-04: 50
- 2026-09-03: 50
- 2026-09-02: 50
- 2026-09-01: 50
- 2026-08-31: 50
- 2026-08-30: 50
- 2026-08-29: 50

## Common questions

### What is the 404.directory MCP server?

404.directory is an MCP server listed in the public MCP registry as io.github.MM-sheng/404-directory. Risk preflight for AI Agent tool actions and Polymarket settlement and execution checks. This page covers its npm package (@mmvv1638/404-directory-mcp).

### Is the 404.directory MCP server safe to use?

404.directory scores 50 out of 100 on VerifyMCP. We found no known CVEs affecting it as of 27 September 2026. It declares no install or post-install scripts. Its build provenance is signed and verified. 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.

### Is the 404.directory MCP server still maintained?

404.directory is still listed as active in the MCP registry. We last reached this channel on 27 September 2026. Those dates come from our own scans of the registry and the channel itself, not from anything the publisher announced.

### What licence is the 404.directory MCP server under?

404.directory declares the MIT licence, which is OSI-approved. That covers the source only, and says nothing about the cost of any service it calls.

## Links

- npm package: https://www.npmjs.com/package/@mmvv1638/404-directory-mcp
- Socket report: https://socket.dev/npm/package/@mmvv1638/404-directory-mcp
- Repository: https://github.com/MM-sheng/404-directory
- Website: https://404.directory/
- Changelog RSS feed: https://verifymcp.io/servers/mm-sheng-404-directory/mmvv1638-404-directory-mcp.xml
- Changelog JSON feed: https://verifymcp.io/servers/mm-sheng-404-directory/mmvv1638-404-directory-mcp.json
- HTML version of this page: https://verifymcp.io/servers/mm-sheng-404-directory/mmvv1638-404-directory-mcp