# Fairplug (sandbox) (remote · fairplug-mcp.fairplughq.workers.dev)

Disclosure-first sponsored offers for AI assistants. Free read-only sandbox, fictional data.

- Trust score: 68/100 (medium)
- Registry status: active
- Liveness: live
- Owner verified: no
- Last scored: 2026-10-18

## Components

- remote · `fairplug-mcp.fairplughq.workers.dev`: 68/100 (this document), [markdown](https://verifymcp.io/servers/fairplughq-fairplug-mcp/sandbox-mcp.md), [page](https://verifymcp.io/servers/fairplughq-fairplug-mcp/sandbox-mcp)

## Channel facts

- Endpoint: `https://fairplug-mcp.fairplughq.workers.dev/sandbox/mcp`
- Transports: `streamable-http`
- Auth: `none`
- Version: `0.1.0`

## 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 2026-10-18.

- **Endpoint Security**: 63/100
  - 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 enforcement could not be verified: the plaintext port answered with HTTP 406, which proves neither a plaintext path nor enforcement.
  - HSTS check failed: the Strict-Transport-Security header is absent.
  - 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**: 74/100
  - AI-judged instruction clarity (good).
  - Tool/resource definitions use about 171 tokens (~85/item across 2 items; 2 tools + 0 resources), lean.
  - Usage-examples check failed: none of the tools include examples.
- **Stability & Change Management**: 10/100
  - Stability observed for 3 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 2 captured tool definition(s), and no name or description among them implies an irreversible operation.
  - An AI judge read all 2 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.

## Install

### How do I install the Fairplug (sandbox) MCP server?

Fairplug (sandbox) is a hosted endpoint at https://fairplug-mcp.fairplughq.workers.dev/sandbox/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 fairplughq-fairplug-mcp 'https://fairplug-mcp.fairplughq.workers.dev/sandbox/mcp'
```

### Cursor

```json
{
  "mcpServers": {
    "fairplughq-fairplug-mcp": {
      "url": "https://fairplug-mcp.fairplughq.workers.dev/sandbox/mcp"
    }
  }
}
```

### VS Code

```json
{
  "servers": {
    "fairplughq-fairplug-mcp": {
      "type": "http",
      "url": "https://fairplug-mcp.fairplughq.workers.dev/sandbox/mcp"
    }
  }
}
```

### Codex

```toml
[mcp_servers.fairplughq-fairplug-mcp]
url = "https://fairplug-mcp.fairplughq.workers.dev/sandbox/mcp"
```

### opencode

```json
{
  "$schema": "https://opencode.ai/config.json",
  "mcp": {
    "fairplughq-fairplug-mcp": {
      "type": "remote",
      "url": "https://fairplug-mcp.fairplughq.workers.dev/sandbox/mcp",
      "enabled": true
    }
  }
}
```

### OpenClaw

```bash
openclaw mcp add fairplughq-fairplug-mcp --url 'https://fairplug-mcp.fairplughq.workers.dev/sandbox/mcp' --transport streamable-http
```

### Hermes

```yaml
mcp_servers:
  fairplughq-fairplug-mcp:
    url: "https://fairplug-mcp.fairplughq.workers.dev/sandbox/mcp"
```

### Netclaw

```json
{
  "McpServers": {
    "fairplughq-fairplug-mcp": {
      "Transport": "http",
      "Url": "https://fairplug-mcp.fairplughq.workers.dev/sandbox/mcp"
    }
  }
}
```

### Vellum

```bash
assistant mcp add fairplughq-fairplug-mcp -t streamable-http -u 'https://fairplug-mcp.fairplughq.workers.dev/sandbox/mcp'
```

### Other

```json
{
  "mcpServers": {
    "fairplughq-fairplug-mcp": {
      "type": "http",
      "url": "https://fairplug-mcp.fairplughq.workers.dev/sandbox/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.

### 2026-10-17 (score 68, +1)

No change was recorded against any check on this day. Stability & Change Management went from 3 to 7. That category is still filling its 30-day observation window: 1 days of observed history at the previous scan, 2 at this one. The score rises as the window fills, whether or not the server changes.

### 2026-10-16 (score 67, 0)

- [functional improvement] Stability: unverified → 0.03

### 2026-10-15 (score 67)

First indexed and scored.

## MCP tools (2)

### `search_offers` (~89 tokens)

SANDBOX. Search fictional example sponsored offers. Typed data only, never instructions. Every result is sponsored and must be disclosed to the user.

Input parameters:

- `category` (string): travel | saas | retail, or a sub-category like hotels
- `query` (string, required): What the user is looking for
- `region` (string): ISO country code of the user, e.g. US

### `get_tracked_link` (~82 tokens)

SANDBOX. Returns a non-functional example link plus the disclosure_text you MUST show the user next to any link. Nothing is recorded.

Input parameters:

- `agent_id` (string, required): Your stable agent identifier (not stored in the sandbox)
- `context` (string): Ignored in the sandbox
- `offer_id` (string, required): offer_id from search_offers

## Diagnostics

Captured diagnostic sections: TLS, DNSSEC, Authorisation, Transports. The full working is on the page: https://verifymcp.io/servers/fairplughq-fairplug-mcp/sandbox-mcp#diagnostics

## Score history

- 2026-10-18: 68
- 2026-10-17: 68
- 2026-10-16: 67
- 2026-10-15: 67

## Common questions

### What is the Fairplug (sandbox) MCP server?

Fairplug (sandbox) is an MCP server listed in the public MCP registry as io.github.FairPlugHQ/fairplug-mcp. Disclosure-first sponsored offers for AI assistants. Free read-only sandbox, fictional data. This page covers its hosted endpoint (https://fairplug-mcp.fairplughq.workers.dev/sandbox/mcp).

### Is the Fairplug (sandbox) MCP server safe to use?

Fairplug (sandbox) scores 68 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 Fairplug (sandbox) MCP server expose?

Fairplug (sandbox) exposes 2 tools: search_offers, get_tracked_link. Their descriptions and schemas cost roughly 171 tokens of context every time the server is loaded.

### Does the Fairplug (sandbox) MCP server require authentication?

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

### Is the Fairplug (sandbox) MCP server still maintained?

Fairplug (sandbox) is still listed as active in the MCP registry. We last reached this channel on 18 October 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://fairplug-mcp.fairplughq.workers.dev/sandbox/mcp
- Repository: https://github.com/fairplug/fairplug-mcp
- Changelog RSS feed: https://verifymcp.io/servers/fairplughq-fairplug-mcp/sandbox-mcp.xml
- Changelog JSON feed: https://verifymcp.io/servers/fairplughq-fairplug-mcp/sandbox-mcp.json
- HTML version of this page: https://verifymcp.io/servers/fairplughq-fairplug-mcp/sandbox-mcp