# io.github.meta-taro/mmj-palette (npm · @mmj-map/palette)

Build a MapLibre style from four anchor colours. Self-hosted maps, no API key.

- Trust score: 67/100 (medium)
- Registry status: active
- Liveness: live
- Owner verified: no
- Last scored: 2026-10-19

## Components

- npm · `@mmj-map/palette`: 67/100 (this document), [markdown](https://verifymcp.io/servers/meta-taro-mmj-palette/mmj-map-palette.md), [page](https://verifymcp.io/servers/meta-taro-mmj-palette/mmj-map-palette)

## Channel facts

- Registry: `npm`
- Package: `@mmj-map/palette`
- Version: `0.1.0`
- 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 2026-10-19.

- **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.
  - 0 of 1 dependencies flagged as unhealthy.
- **Provenance & Transparency**: 45/100
  - Source repository is publicly reachable at the declared URL.
  - Provenance check failed: no build-provenance attestation is published.
  - Clear OSI-approved license (MIT).
  - Actively maintained (last published 5 days ago).
  - Disclosure check failed: no security disclosure policy was found in the source repository.
- **Schema Quality & AI Usability**: 67/100
  - AI-judged instruction clarity (good).
  - Context-footprint check failed: tool/resource definitions use about 596 tokens (~149/item across 4 items; 4 tools + 0 resources), over budget; trim descriptions and params.
  - Usage-examples check failed: none of the tools include examples.
- **Stability & Change Management**: 0/100
  - Stability not yet verified: not enough scan history yet (needs a 30-day window).
- **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 4 captured tool definition(s), and no name or description among them implies an irreversible operation.
  - An AI judge read all 4 captured unit(s) of tool text and found none that tries to manipulate the model reading it.
- **Capabilities**: 60/100
  - Spec-recency check failed: implements MCP spec 2025-06-18; the latest is 2026-07-28.

**Unverified: 1 category.** A category scored 0 because we could not verify it: a data source with nothing on this package, evidence we could not reach, or a check we could not run. We only credit what we can confirm.

## Install

### How do I install the io.github.meta-taro/mmj-palette MCP server?

io.github.meta-taro/mmj-palette runs locally as an npm package, launched with npx -y @mmj-map/palette. 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 meta-taro-mmj-palette -- npx -y @mmj-map/palette
```

### Cursor

```json
{
  "mcpServers": {
    "meta-taro-mmj-palette": {
      "command": "npx",
      "args": [
        "-y",
        "@mmj-map/palette"
      ]
    }
  }
}
```

### VS Code

```json
{
  "servers": {
    "meta-taro-mmj-palette": {
      "command": "npx",
      "args": [
        "-y",
        "@mmj-map/palette"
      ]
    }
  }
}
```

### Codex

```bash
codex mcp add meta-taro-mmj-palette -- npx -y @mmj-map/palette
```

### opencode

```json
{
  "$schema": "https://opencode.ai/config.json",
  "mcp": {
    "meta-taro-mmj-palette": {
      "type": "local",
      "command": [
        "npx",
        "-y",
        "@mmj-map/palette"
      ],
      "enabled": true
    }
  }
}
```

### OpenClaw

```bash
openclaw mcp add meta-taro-mmj-palette --command npx --arg -y --arg @mmj-map/palette
```

### Hermes

```yaml
mcp_servers:
  meta-taro-mmj-palette:
    command: "npx"
    args: ["-y", "@mmj-map/palette"]
```

### Netclaw

```json
{
  "McpServers": {
    "meta-taro-mmj-palette": {
      "Transport": "stdio",
      "Command": "npx",
      "Arguments": [
        "-y",
        "@mmj-map/palette"
      ]
    }
  }
}
```

### Vellum

```bash
assistant mcp add meta-taro-mmj-palette -t stdio -c npx -a -y @mmj-map/palette
```

### Other

```json
{
  "mcpServers": {
    "meta-taro-mmj-palette": {
      "command": "npx",
      "args": [
        "-y",
        "@mmj-map/palette"
      ]
    }
  }
}
```

## 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.

### 2026-10-14 (score 67, +28)

- [security improvement] Injection markers: unverified → pass
- [security] First check of Judged manipulation: pass
- [security] Stability: Stability not yet verified: not enough scan history yet (needs a 30-day window).
- [functional regression] MCP protocol: unverified → fail
- [functional improvement] Tool coverage: unverified → 100
- [functional] First check of Schema quality: fail
- [functional] First check of Destructive annotations: pass
- [functional] First check of Schema quality: fail
- [functional] First check of Schema quality: good
- [functional] First check of Tool coverage: 100

### 2026-10-13 (score 39)

First indexed and scored.

## MCP tools (4)

### `mmj_list_roles` (~67 tokens)

配色の役割を 24 個すべて返す。それぞれが地図の何を変えるかの説明つき。色を決める前にこれを読むと、どの役割を指定すべきか分かる。

### `mmj_list_bases` (~56 tokens)

土台にできるスタイルの名前を返す。土台はレイヤ構成（何をどの倍率で描くか）を決め、色は指し値が決める。

### `mmj_derive_palette` (~220 tokens)

4〜5 色の指し値から、24 役割の配色を作る。返るのは役割 → 色の JSON で、<mmj-map palette-url> にそのまま渡せる。手で直す前提の形。

Input parameters:

- `accent` (string, required): テーマカラー（#rrggbb）。高速道路と駅の縁に乗る
- `green` (string): 公園・森の色（#rrggbb）。省くと陸から導く
- `ink` (string, required): 文字の色（#rrggbb）。ラベルの一番濃い側
- `land` (string, required): 陸・背景の色（#rrggbb）
- `overrides` (object): 役割ごとに手で決めた色。ここが最後に勝つ
- `water` (string, required): 水域の色（#rrggbb）。陸の系列から独立させる

### `mmj_build_style` (~253 tokens)

指し値から、そのまま配れるスタイル JSON を作る。<mmj-map style-url> に渡すか、自分の配布物へ同梱する。生成物の印（mmj:generated）と帰属表示が入る。

Input parameters:

- `accent` (string, required): テーマカラー（#rrggbb）。高速道路と駅の縁に乗る
- `base` (string, required): 土台のスタイル名（mmj_list_bases で取れる）
- `green` (string): 公園・森の色（#rrggbb）。省くと陸から導く
- `ink` (string, required): 文字の色（#rrggbb）。ラベルの一番濃い側
- `land` (string, required): 陸・背景の色（#rrggbb）
- `name` (string, required): 作るスタイルの名前
- `overrides` (object): 役割ごとに手で決めた色。ここが最後に勝つ
- `water` (string, required): 水域の色（#rrggbb）。陸の系列から独立させる

## Diagnostics

Captured diagnostic sections: Provenance, Dependencies. The full working is on the page: https://verifymcp.io/servers/meta-taro-mmj-palette/mmj-map-palette#diagnostics

## Score history

- 2026-10-19: 67
- 2026-10-18: 67
- 2026-10-17: 67
- 2026-10-16: 67
- 2026-10-15: 67
- 2026-10-14: 67
- 2026-10-13: 39

## Common questions

### What is the io.github.meta-taro/mmj-palette MCP server?

io.github.meta-taro/mmj-palette is an MCP server listed in the public MCP registry as io.github.meta-taro/mmj-palette. Build a MapLibre style from four anchor colours. Self-hosted maps, no API key. This page covers its npm package (@mmj-map/palette).

### Is the io.github.meta-taro/mmj-palette MCP server safe to use?

io.github.meta-taro/mmj-palette scores 67 out of 100 on VerifyMCP. We found no known CVEs affecting it as of 19 October 2026. It declares no install or post-install scripts. 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 io.github.meta-taro/mmj-palette MCP server expose?

io.github.meta-taro/mmj-palette exposes 4 tools: mmj_list_roles, mmj_list_bases, mmj_derive_palette, mmj_build_style. Their descriptions and schemas cost roughly 596 tokens of context every time the server is loaded.

### Is the io.github.meta-taro/mmj-palette MCP server still maintained?

io.github.meta-taro/mmj-palette is still listed as active in the MCP registry. We last reached this channel on 19 October 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 io.github.meta-taro/mmj-palette MCP server under?

io.github.meta-taro/mmj-palette 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/@mmj-map/palette
- Socket report: https://socket.dev/npm/package/@mmj-map/palette
- Repository: https://github.com/meta-taro/mmj-map
- Changelog RSS feed: https://verifymcp.io/servers/meta-taro-mmj-palette/mmj-map-palette.xml
- Changelog JSON feed: https://verifymcp.io/servers/meta-taro-mmj-palette/mmj-map-palette.json
- HTML version of this page: https://verifymcp.io/servers/meta-taro-mmj-palette/mmj-map-palette