# Codex Mrl (npm · @pipeworx/mcp-codex-mrl)

Codex Alimentarius maximum residue limits — the internationally agreed legal ceilings for…

- Trust score: 85/100 (high trust)
- Change this week: +3
- Registry status: active
- Liveness: live
- Owner verified: no
- Last scored: 2026-11-05

## Components

- remote · `gateway.pipeworx.io`: 63/100, [markdown](https://verifymcp.io/servers/pipeworx-io-codex-mrl/codex-mrl-mcp.md), [page](https://verifymcp.io/servers/pipeworx-io-codex-mrl/codex-mrl-mcp)
- npm · `@pipeworx/mcp-codex-mrl`: 85/100 (this document), [markdown](https://verifymcp.io/servers/pipeworx-io-codex-mrl/pipeworx-mcp-codex-mrl.md), [page](https://verifymcp.io/servers/pipeworx-io-codex-mrl/pipeworx-mcp-codex-mrl)

## Channel facts

- Registry: `npm`
- Package: `@pipeworx/mcp-codex-mrl`
- Version: `0.2.1`
- 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 2026-11-05.

- **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**: 97/100
  - Source repository is publicly reachable at the declared URL.
  - Cryptographically verified build provenance (signed, bound to pipeworx-io/mcp-codex-mrl).
  - Clear OSI-approved license (MIT).
  - Actively maintained (last published 4 days ago).
  - Disclosure check failed: no security disclosure policy was found in the source repository.
- **Schema Quality & AI Usability**: 81/100
  - AI-judged instruction clarity (excellent).
  - Tool/resource definitions use about 641 tokens (~106/item across 6 items; 6 tools + 0 resources), lean.
  - Usage-examples check failed: none of the tools include examples.
- **Stability & Change Management**: 23/100
  - Stability observed for 7 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 6 captured tool definition(s), and no name or description among them implies an irreversible operation.
  - An AI judge read all 7 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 Codex Mrl MCP server?

Codex Mrl runs locally as an npm package, launched with npx -y @pipeworx/mcp-codex-mrl. 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 pipeworx-io-codex-mrl -- npx -y @pipeworx/mcp-codex-mrl
```

### Cursor

```json
{
  "mcpServers": {
    "pipeworx-io-codex-mrl": {
      "command": "npx",
      "args": [
        "-y",
        "@pipeworx/mcp-codex-mrl"
      ]
    }
  }
}
```

### VS Code

```json
{
  "servers": {
    "pipeworx-io-codex-mrl": {
      "command": "npx",
      "args": [
        "-y",
        "@pipeworx/mcp-codex-mrl"
      ]
    }
  }
}
```

### Codex

```bash
codex mcp add pipeworx-io-codex-mrl -- npx -y @pipeworx/mcp-codex-mrl
```

### opencode

```json
{
  "$schema": "https://opencode.ai/config.json",
  "mcp": {
    "pipeworx-io-codex-mrl": {
      "type": "local",
      "command": [
        "npx",
        "-y",
        "@pipeworx/mcp-codex-mrl"
      ],
      "enabled": true
    }
  }
}
```

### OpenClaw

```bash
openclaw mcp add pipeworx-io-codex-mrl --command npx --arg -y --arg @pipeworx/mcp-codex-mrl
```

### Hermes

```yaml
mcp_servers:
  pipeworx-io-codex-mrl:
    command: "npx"
    args: ["-y", "@pipeworx/mcp-codex-mrl"]
```

### Netclaw

```json
{
  "McpServers": {
    "pipeworx-io-codex-mrl": {
      "Transport": "stdio",
      "Command": "npx",
      "Arguments": [
        "-y",
        "@pipeworx/mcp-codex-mrl"
      ]
    }
  }
}
```

### Vellum

```bash
assistant mcp add pipeworx-io-codex-mrl -t stdio -c npx -a -y @pipeworx/mcp-codex-mrl
```

### Other

```json
{
  "mcpServers": {
    "pipeworx-io-codex-mrl": {
      "command": "npx",
      "args": [
        "-y",
        "@pipeworx/mcp-codex-mrl"
      ]
    }
  }
}
```

## 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 85, +1)

No change was recorded against any check on this day. Stability & Change Management went from 17 to 20. That category is still filling its 30-day observation window: 5 days of observed history at the previous scan, 6 at this one. The score rises as the window fills, whether or not the server changes.

### 2026-11-02 (score 84, +1)

No change was recorded against any check on this day. Stability & Change Management went from 10 to 13. That category is still filling its 30-day observation window: 3 days of observed history at the previous scan, 4 at this one. The score rises as the window fills, whether or not the server changes.

### 2026-11-01 (score 83, +15)

- [security improvement] Malware scan: unverified → pass

### 2026-10-31 (score 68, −14)

- [security regression] Malware scan: pass → unverified
- [functional] Package version: 0.2.0 → 0.2.1

### 2026-10-29 (score 82)

First indexed and scored.

## MCP tools (6)

### `codex_pesticide_search` (~93 tokens)

Find pesticides in the Codex Alimentarius residue database by name or partial name (glyphosate, chlorpyrifos, 2,4-D). Returns each match with the id needed to fetch its maximum residue limits. Use when you have a pesticide name and want its Codex record.

Input parameters:

- `query` (string, required): Pesticide name or fragment, e.g. "glyphosate".

### `codex_pesticide_mrls` (~102 tokens)

Get the internationally agreed maximum residue limits for one pesticide across every food commodity Codex has set a limit for, plus its Acceptable Daily Intake, the chemical definition of the residue being measured, and its pesticide class. Accepts a pesticide name or a numeric id. Use to answer how much of a pesticide is legally permitted in foods.

Input parameters:

- `pesticide` (string, required): Pesticide name ("glyphosate") or numeric id ("158").

### `codex_commodity_search` (~92 tokens)

Find food commodities in the Codex pesticide residue database by name (apple, rice, milk, poultry meat). Returns each match with the id needed to look up every pesticide limit that applies to it. Codex splits foods finely — "apple" and "apple pomace, dried" are separate commodities with different limits.

Input parameters:

- `query` (string, required): Food or commodity name, e.g. "apple".

### `codex_commodity_mrls` (~98 tokens)

List every pesticide with a Codex maximum residue limit in one food, with the limit for each. Accepts a commodity id, a Codex commodity code ("FP 0226"), or a food name. Use to answer which pesticide residues are permitted in a given food and at what level.

Input parameters:

- `commodity` (string, required): Commodity id ("139"), Codex code ("FP 0226"), or food name ("apple").

### `codex_vetdrug_search` (~76 tokens)

List or search the veterinary drugs for which Codex has adopted maximum residue limits in animal-derived food — antibiotics, antiparasitics, growth promoters. Omit the query to list all of them with the year each was last adopted.

Input parameters:

- `query` (string): Drug name or fragment. Omit to list all.

### `codex_vetdrug_mrls` (~123 tokens)

Get the Codex maximum residue limits for one veterinary drug, broken down by animal species and tissue (cattle muscle, liver, kidney, milk; fish fillet; poultry eggs), with its functional class and the JECFA evaluations behind each limit. Accepts a drug name or numeric id. An empty limit list is meaningful — Codex sets no MRL for substances like chloramphenicol that it judges unsafe at any level.

Input parameters:

- `drug` (string, required): Veterinary drug name ("abamectin") or numeric id ("1").

## Diagnostics

Captured diagnostic sections: Provenance, Dependencies. The full working is on the page: https://verifymcp.io/servers/pipeworx-io-codex-mrl/pipeworx-mcp-codex-mrl#diagnostics

## Score history

- 2026-11-05: 85
- 2026-11-04: 85
- 2026-11-03: 84
- 2026-11-02: 84
- 2026-11-01: 83
- 2026-10-31: 68
- 2026-10-30: 82
- 2026-10-29: 82

## Common questions

### What is the Codex Mrl MCP server?

Codex Mrl is an MCP server listed in the public MCP registry as io.github.pipeworx-io/codex-mrl. Codex Alimentarius maximum residue limits, the internationally agreed legal ceilings for… This page covers its npm package (@pipeworx/mcp-codex-mrl).

### Is the Codex Mrl MCP server safe to use?

Codex Mrl scores 85 out of 100 on VerifyMCP. We found no known CVEs affecting it as of 5 November 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.

### What tools does the Codex Mrl MCP server expose?

Codex Mrl exposes 6 tools: codex_pesticide_search, codex_pesticide_mrls, codex_commodity_search, codex_commodity_mrls, codex_vetdrug_search, codex_vetdrug_mrls. Their descriptions and schemas cost roughly 584 tokens of context every time the server is loaded.

### Is the Codex Mrl MCP server still maintained?

Codex Mrl 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.

### What licence is the Codex Mrl MCP server under?

Codex Mrl 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/@pipeworx/mcp-codex-mrl
- Socket report: https://socket.dev/npm/package/@pipeworx/mcp-codex-mrl
- Repository: https://github.com/pipeworx-io/mcp-codex-mrl
- Website: https://pipeworx.io/packs/codex-mrl
- Changelog RSS feed: https://verifymcp.io/servers/pipeworx-io-codex-mrl/pipeworx-mcp-codex-mrl.xml
- Changelog JSON feed: https://verifymcp.io/servers/pipeworx-io-codex-mrl/pipeworx-mcp-codex-mrl.json
- HTML version of this page: https://verifymcp.io/servers/pipeworx-io-codex-mrl/pipeworx-mcp-codex-mrl