io.github.meta-taro/mmj-palette
NPM · @MMJ-MAP/PALETTE
Build a MapLibre style from four anchor colours. Self-hosted maps, no API key.
Available components
Last scanned (2 hours ago)
Scores higher than 38% of npm servers
Category Maps and Location
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. How we score → Why this is hard to score →
Supply Chain Security100
- No malware found by supply-chain analysis.Pass
- No known CVEs affecting this package version or its production dependencies.Pass
- No install/post-install scripts declared.Pass
- 0 of 1 dependencies flagged as unhealthy. View diagnostics → Pass
Provenance & Transparency45
- Source repository is publicly reachable at the declared URL. View diagnostics → Pass
- Provenance check failed: no build-provenance attestation is published. See how to fix → View diagnostics → Fail
- Clear OSI-approved license (MIT).Pass
- Actively maintained (last published 5 days ago).Pass
- Disclosure check failed: no security disclosure policy was found in the source repository. See how to fix → Fail
Schema Quality & AI Usability67
- AI-judged instruction clarity (good).Pass
- 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. See how to fix → Fail
- Usage-examples check failed: none of the tools include examples. See how to fix → Fail
Stability & Change Management0
- Stability not yet verified: not enough scan history yet (needs a 30-day window).Unverified
Tool Coverage100
- 100% of tools have a non-trivial description (not blank, and not just the tool's name).Pass
- 100% of tool parameters carry a description.Pass
Tool Safety100
- No prompt-injection markers were found in the server instructions, tool names or descriptions we captured.Pass
- We read all 4 captured tool definition(s), and no name or description among them implies an irreversible operation.Pass
- An AI judge read all 4 captured unit(s) of tool text and found none that tries to manipulate the model reading it.Pass
Capabilities60
- Spec-recency check failed: implements MCP spec 2025-06-18; the latest is 2026-07-28. See how to fix → Fail
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.
Every change we have recorded for this component, newest first. Security-relevant changes are always shown. ▲ marks a change for the better, ▼ a change for the worse; unmarked changes are neutral.
- 14 Oct 26 +28
- 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). security
- MCP protocol: unverified → fail ▼ functional
- 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 functional
- 13 Oct 26 39
First indexed and scored.
Diagnostic detail from the automated scan of this channel: what the scanner observed at each step, so you can see exactly where a check passed or failed. It is informational only and never changes the trust score.
Captured 19 Oct 2026 · Analysed npm/@mmj-map/palette@0.1.0
Provenance No attestation
The registry publishes no build provenance for this version, so there is nothing to verify.
| Result | No attestation |
|---|---|
| Ecosystem | npm |
Background: How many MCP packages publish verified provenance →
Dependencies 1 package
| Packages resolved | 1 |
|---|---|
| Tree resolution | Complete |
Background: SBOMs and build attestations, explained →
The tools this component advertises to a client, with an estimated token cost for each. Expand a tool to see its parameters and schema. The per-tool counts are indicative and are not scored directly; the schema's total context footprint is one signal in Schema Quality & AI Usability. A tool's description is untrusted text the model reads on every call, which is what makes this list a security surface and not just an inventory: how tool poisoning works →
mmj_build_style ~253
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。
| Name | Type | Req | Description |
|---|---|---|---|
| accent | string | yes | テーマカラー（#rrggbb）。高速道路と駅の縁に乗る |
| base | string | yes | 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 | yes | 文字の色（#rrggbb）。ラベルの一番濃い側 |
| land | string | yes | 陸・背景の色（#rrggbb） |
| name | string | yes | 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 | yes | 水域の色（#rrggbb）。陸の系列から独立させる |
No output schema declared.
No examples provided.
mmj_derive_palette ~220
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。
| Name | Type | Req | Description |
|---|---|---|---|
| accent | string | yes | 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 | yes | 文字の色（#rrggbb）。ラベルの一番濃い側 |
| land | string | yes | 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 | yes | 水域の色（#rrggbb）。陸の系列から独立させる |
No output schema declared.
No examples provided.
mmj_list_bases ~56
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。
Input schema present but exposes no named parameters.
No output schema declared.
No examples provided.
mmj_list_roles ~67
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。
Input schema present but exposes no named parameters.
No output schema declared.
No examples provided.
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.
npm · @mmj-map/palette
claude mcp add meta-taro-mmj-palette -- npx -y @mmj-map/palette
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.