# LKJ — four-digit short links for TV browsers (remote · lkj.cx)

Create four-digit short URLs for TV and console browsers. Free beta, no account or API key.

- Trust score: 79/100 (medium)
- Change this week: +3
- Registry status: active
- Liveness: live
- Owner verified: no
- Last scored: 2026-11-05

## Components

- remote · `lkj.cx`: 79/100 (this document), [markdown](https://verifymcp.io/servers/cx-lkj-short-links/lkj.md), [page](https://verifymcp.io/servers/cx-lkj-short-links/lkj)

## Channel facts

- Endpoint: `https://lkj.cx/mcp`
- Transports: `streamable-http`
- Auth: `none`
- Version: `0.7.0`

## 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 2026-11-05.

- **Endpoint Security**: 83/100
  - 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 is configured correctly; the domain's records validate against the full chain to the root.
- **Transport & Reachability**: 100/100
  - Verified streamable-http transport via a live MCP handshake.
- **Schema Quality & AI Usability**: 72/100
  - AI-judged instruction clarity (excellent).
  - Context-footprint check failed: tool/resource definitions use about 414 tokens (~207/item across 2 items; 2 tools + 0 resources), over budget; trim descriptions and params.
  - Usage-examples check failed: none of the tools include examples.
- **Stability & Change Management**: 37/100
  - Stability observed for 11 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.
  - Structured output schemas are declared (50% of tools); any adoption earns full credit.
- **Tool Safety**: 100/100
  - No prompt-injection markers were found in the server instructions, tool names or descriptions we captured.
  - We read all 2 captured tool definition(s), and no name or description among them implies an irreversible operation.
  - An AI judge read all 3 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 LKJ — four-digit short links for TV browsers MCP server?

LKJ — four-digit short links for TV browsers is a hosted endpoint at https://lkj.cx/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 cx-lkj-short-links 'https://lkj.cx/mcp'
```

### Cursor

```json
{
  "mcpServers": {
    "cx-lkj-short-links": {
      "url": "https://lkj.cx/mcp"
    }
  }
}
```

### VS Code

```json
{
  "servers": {
    "cx-lkj-short-links": {
      "type": "http",
      "url": "https://lkj.cx/mcp"
    }
  }
}
```

### Codex

```toml
[mcp_servers.cx-lkj-short-links]
url = "https://lkj.cx/mcp"
```

### opencode

```json
{
  "$schema": "https://opencode.ai/config.json",
  "mcp": {
    "cx-lkj-short-links": {
      "type": "remote",
      "url": "https://lkj.cx/mcp",
      "enabled": true
    }
  }
}
```

### OpenClaw

```bash
openclaw mcp add cx-lkj-short-links --url 'https://lkj.cx/mcp' --transport streamable-http
```

### Hermes

```yaml
mcp_servers:
  cx-lkj-short-links:
    url: "https://lkj.cx/mcp"
```

### Netclaw

```json
{
  "McpServers": {
    "cx-lkj-short-links": {
      "Transport": "http",
      "Url": "https://lkj.cx/mcp"
    }
  }
}
```

### Vellum

```bash
assistant mcp add cx-lkj-short-links -t streamable-http -u 'https://lkj.cx/mcp'
```

### Other

```json
{
  "mcpServers": {
    "cx-lkj-short-links": {
      "type": "http",
      "url": "https://lkj.cx/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 79, +1)

No change was recorded against any check on this day. Stability & Change Management went from 30 to 33. That category is still filling its 30-day observation window: 9 days of observed history at the previous scan, 10 at this one. The score rises as the window fills, whether or not the server changes.

### 2026-11-02 (score 78, +1)

No change was recorded against any check on this day. Stability & Change Management went from 23 to 27. That category is still filling its 30-day observation window: 7 days of observed history at the previous scan, 8 at this one. The score rises as the window fills, whether or not the server changes.

### 2026-10-30 (score 77, +1)

No change was recorded against any check on this day. Stability & Change Management went from 13 to 17. That category is still filling its 30-day observation window: 4 days of observed history at the previous scan, 5 at this one. The score rises as the window fills, whether or not the server changes.

### 2026-10-28 (score 76, +1)

No change was recorded against any check on this day. Stability & Change Management went from 7 to 10. That category is still filling its 30-day observation window: 2 days of observed history at the previous scan, 3 at this one. The score rises as the window fills, whether or not the server changes.

### 2026-10-26 (score 75, +1)

- [functional improvement] Stability: unverified → 0.03

### 2026-10-25 (score 74)

First indexed and scored.

## MCP tools (2)

### `create_short_link` (~186 tokens)

Create a short URL with a four-digit TV code

Shorten a public website for easy typing on a TV remote, console browser, phone or computer. Returns a short preview URL, four digits, one-hour idle expiry and instructions. Free beta, no account or API key. Appropriate for temporary device handoff; not permanent bookmarks, private links, casting or sign-in transfer. Publishes the submitted URL behind a guessable code. Requires a fresh random UUID request_id; reuse the same URL and ID for retries. Five new attempts per network daily and shared beta capacity; do not evade limits.

Input parameters:

- `request_id` (string, required): Generate a fresh random UUID for a new logical request. Retain it and the exact URL for retries. This is a request identifier, not an API key.
- `url` (string, required): The public website the user wants to share. Bare domains default to HTTPS. Never submit private URLs or access tokens.

Output parameters:

- `code` (string)
- `expires_at` (string)
- `expires_in_seconds` (integer)
- `expiry_policy` (string)
- `instructions` (string)
- `safety_note` (string)
- `short_url` (string)
- `tv_home_url` (string)
- `tv_url` (string)

### `get_service_info` (~53 tokens)

Check LKJ link-sharing capabilities and availability

Read what LKJ does, whether new agent links are currently enabled, its fair-use limits and when to choose four-digit temporary links. Does not create or open a code, check a destination or consume a creation allowance.

## Diagnostics

Captured diagnostic sections: TLS, DNSSEC, Authorisation, Transports. The full working is on the page: https://verifymcp.io/servers/cx-lkj-short-links/lkj#diagnostics

## Score history

- 2026-11-05: 79
- 2026-11-04: 79
- 2026-11-03: 78
- 2026-11-02: 78
- 2026-11-01: 77
- 2026-10-31: 77
- 2026-10-30: 77
- 2026-10-29: 76
- 2026-10-28: 76
- 2026-10-27: 75
- 2026-10-26: 75
- 2026-10-25: 74

## Common questions

### What is the LKJ — four-digit short links for TV browsers MCP server?

LKJ — four-digit short links for TV browsers is an MCP server listed in the public MCP registry as cx.lkj/short-links. Create four-digit short URLs for TV and console browsers. Free beta, no account or API key. This page covers its hosted endpoint (https://lkj.cx/mcp).

### Is the LKJ — four-digit short links for TV browsers MCP server safe to use?

LKJ — four-digit short links for TV browsers scores 79 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 LKJ — four-digit short links for TV browsers MCP server expose?

LKJ — four-digit short links for TV browsers exposes 2 tools: create_short_link, get_service_info. Their descriptions and schemas cost roughly 239 tokens of context every time the server is loaded.

### Does the LKJ — four-digit short links for TV browsers MCP server require authentication?

No. We connected to LKJ — four-digit short links for TV browsers without credentials and it answered, so anything it exposes is reachable by anyone who knows the address.

### Is the LKJ — four-digit short links for TV browsers MCP server still maintained?

LKJ — four-digit short links for TV browsers is still listed as active in the MCP registry. We last reached this channel on 5 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://lkj.cx/mcp
- Website: https://lkj.cx/agents
- Changelog RSS feed: https://verifymcp.io/servers/cx-lkj-short-links/lkj.xml
- Changelog JSON feed: https://verifymcp.io/servers/cx-lkj-short-links/lkj.json
- HTML version of this page: https://verifymcp.io/servers/cx-lkj-short-links/lkj