# MRX Public MCP (remote · mrx-public-mcp.vercel.app)

Read-only, source-linked mineral-rights education from MineralRightsXchange.com.

- Trust score: 78/100 (medium)
- Change this week: +3
- Registry status: active
- Liveness: live
- Owner verified: no
- Last scored: 2026-10-06

## Components

- remote · `mrx-public-mcp.vercel.app`: 78/100 (this document), [markdown](https://verifymcp.io/servers/underwriter-mrx-mrx-mcp/mrx-public-mcp.md), [page](https://verifymcp.io/servers/underwriter-mrx-mrx-mcp/mrx-public-mcp)

## Channel facts

- Endpoint: `https://mrx-public-mcp.vercel.app/mcp`
- Transports: `streamable-http`
- Auth: `none`
- Version: `0.2.0`

## 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 2026-10-06.

- **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**: 82/100
  - 100% of prompts and resources have a non-trivial description (not blank, and not just the item's name).
  - AI-judged instruction clarity (good).
  - Tool/resource definitions use about 639 tokens (~71/item across 9 items; 8 tools + 1 resources), lean.
  - Usage-examples check failed: none of the tools include examples.
- **Stability & Change Management**: 40/100
  - Stability observed for 12 of 30 days with no destabilising changes; credit accrues until the full window elapses.
- **Tool Coverage**: 71/100
  - 100% of tools have a non-trivial description (not blank, and not just the tool's name).
  - 0% of tool parameters carry a description.
  - Structured output schemas are declared (25% 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 8 captured tool definition(s), and no name or description among them implies an irreversible operation.
  - An AI judge read all 10 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 MRX Public MCP server?

MRX Public MCP is a hosted endpoint at https://mrx-public-mcp.vercel.app/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 underwriter-mrx-mrx-mcp 'https://mrx-public-mcp.vercel.app/mcp'
```

### Cursor

```json
{
  "mcpServers": {
    "underwriter-mrx-mrx-mcp": {
      "url": "https://mrx-public-mcp.vercel.app/mcp"
    }
  }
}
```

### VS Code

```json
{
  "servers": {
    "underwriter-mrx-mrx-mcp": {
      "type": "http",
      "url": "https://mrx-public-mcp.vercel.app/mcp"
    }
  }
}
```

### Codex

```toml
[mcp_servers.underwriter-mrx-mrx-mcp]
url = "https://mrx-public-mcp.vercel.app/mcp"
```

### opencode

```json
{
  "$schema": "https://opencode.ai/config.json",
  "mcp": {
    "underwriter-mrx-mrx-mcp": {
      "type": "remote",
      "url": "https://mrx-public-mcp.vercel.app/mcp",
      "enabled": true
    }
  }
}
```

### OpenClaw

```bash
openclaw mcp add underwriter-mrx-mrx-mcp --url 'https://mrx-public-mcp.vercel.app/mcp' --transport streamable-http
```

### Hermes

```yaml
mcp_servers:
  underwriter-mrx-mrx-mcp:
    url: "https://mrx-public-mcp.vercel.app/mcp"
```

### Netclaw

```json
{
  "McpServers": {
    "underwriter-mrx-mrx-mcp": {
      "Transport": "http",
      "Url": "https://mrx-public-mcp.vercel.app/mcp"
    }
  }
}
```

### Vellum

```bash
assistant mcp add underwriter-mrx-mrx-mcp -t streamable-http -u 'https://mrx-public-mcp.vercel.app/mcp'
```

### Other

```json
{
  "mcpServers": {
    "underwriter-mrx-mrx-mcp": {
      "type": "http",
      "url": "https://mrx-public-mcp.vercel.app/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.

### 2026-10-06 (score 78, +1)

No change was recorded against any check on this day. Stability & Change Management went from 33 to 40. That category is still filling its 30-day observation window: 10 days of observed history at the previous scan, 12 at this one. The score rises as the window fills, whether or not the server changes.

### 2026-10-03 (score 77, +1)

No change was recorded against any check on this day. Stability & Change Management went from 27 to 30. That category is still filling its 30-day observation window: 8 days of observed history at the previous scan, 9 at this one. The score rises as the window fills, whether or not the server changes.

### 2026-10-01 (score 76, +1)

- [security] The server rewrote its instructions, which are the text every model session reads
- [functional regression] Tool coverage: 33% → 25%
- [functional regression] Schema quality: 64 → 71
- [functional] Server version: 0.2.0 → 0.3.0
- [functional] New tool “mrx_list_public_pages”
- [functional] New tool “mrx_website_capabilities”

### 2026-09-29 (score 75, +11)

- [security improvement] Transport: fail → pass

### 2026-09-28 (score 64, −10)

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

### 2026-09-27 (score 74, +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.

### 2026-09-26 (score 73, +9)

- [security improvement] Authorization: unverified → partial
- [security improvement] HSTS header: unverified → pass

### 2026-09-25 (score 64, −8)

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

## MCP tools (8)

### `mrx_status` (~22 tokens)

Check the current public sitemap/manifest, server capabilities and boundaries.

### `mrx_search_guides` (~77 tokens)

Search verified public MRX titles, headings and article text.
    Optional jurisdiction/topic filters are source-text matches, not legal conclusions.
    Coverage reports omissions. Do not include personal data in a research query.

Input parameters:

- `jurisdiction`
- `limit` (integer)
- `query` (string, required)
- `topic`

### `search` (~58 tokens)

Search public MRX educational guides. Returns citable canonical document IDs.
    No private cases. Fetch each source before relying on it. An incomplete index
    produces an error rather than an apparently exhaustive compatibility response.

Input parameters:

- `query` (string, required)

Output parameters:

- `results` (array)

### `fetch` (~45 tokens)

Fetch a verified public document by the canonical URL ID returned by search.
    Return source text, attribution and dates when available; never infer a review.

Input parameters:

- `id` (string, required)

Output parameters:

- `id` (string)
- `metadata` (object)
- `text` (string)
- `title` (string)
- `url` (string)

### `mrx_read_page` (~68 tokens)

Read one canonical public MRX page after sitemap, hash and indexability checks.
    Accepts only https://mineralrightsxchange.com/ URLs returned by search.
    Private routes, off-site URLs, queries, fragments and redirects are rejected.

Input parameters:

- `url` (string, required)

### `mrx_get_started` (~44 tokens)

Read MRX's current public homepage and its source-linked next-step links.
    This does not submit a request, create a case, or perform a human review.

### `mrx_website_capabilities` (~63 tokens)

Read current website capabilities from verified public sources.
    Sections: overview, ai_guides, investors (Graham), human_review.
    Returns website descriptions, not access to chat, bookings, uploads or private cases.

Input parameters:

- `section` (string)

### `mrx_list_public_pages` (~89 tokens)

Discover current public pages, including website journeys and AI guide profiles.
    Categories: all, articles (blog paths), ai_guides, website. Pass content_revision
    on subsequent pages to detect a changing inventory. Read a page before citing it.

Input parameters:

- `category` (string)
- `content_revision`
- `limit` (integer)
- `offset` (integer)

## Diagnostics

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

## Score history

- 2026-10-06: 78
- 2026-10-04: 77
- 2026-10-03: 77
- 2026-10-02: 76
- 2026-10-01: 76
- 2026-09-30: 75
- 2026-09-29: 75
- 2026-09-28: 64
- 2026-09-27: 74
- 2026-09-26: 73
- 2026-09-25: 64
- 2026-09-24: 72

## Common questions

### What is the MRX Public MCP server?

MRX Public MCP is listed in the public MCP registry as io.github.underwriter-MRX/mrx-mcp. Read-only, source-linked mineral-rights education from MineralRightsXchange.com. This page covers its hosted endpoint (https://mrx-public-mcp.vercel.app/mcp).

### Is the MRX Public MCP server safe to use?

MRX Public MCP scores 78 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 MRX Public MCP server expose?

MRX Public MCP exposes 8 tools: mrx_status, mrx_search_guides, search, fetch, mrx_read_page, and 3 more. Their descriptions and schemas cost roughly 466 tokens of context every time the server is loaded.

### Does the MRX Public MCP server require authentication?

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

### Is the MRX Public MCP server still maintained?

MRX Public MCP is still listed as active in the MCP registry. We last reached this channel on 6 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://mrx-public-mcp.vercel.app/mcp
- Repository: https://github.com/underwriter-MRX/mrx-mcp
- Changelog RSS feed: https://verifymcp.io/servers/underwriter-mrx-mrx-mcp/mrx-public-mcp.xml
- Changelog JSON feed: https://verifymcp.io/servers/underwriter-mrx-mrx-mcp/mrx-public-mcp.json
- HTML version of this page: https://verifymcp.io/servers/underwriter-mrx-mrx-mcp/mrx-public-mcp