maps-location

maps-location is a skill for Claude Code, Codex from lh17708357536-gif/flutter-cn-overseas-app-skills. It costs 121 tokens per session (2,477 once invoked), scanned A, original, MIT.

A design and implementation guide for showing maps and location data in apps used across regions. It routes China-based data to Amap and other regions to Google Maps or Mapbox, with separate rules for China and overseas app versions.

In plain words
What is it for?
It is for choosing map providers by data location, routing map requests through a backend, loading the right mobile SDK, handling overseas access from China, and requesting location permission when needed.
Why use it?
It helps apps use map services that work in each region while keeping provider decisions in one place and avoiding prohibited Google dependencies in the China Android version.

Skill for Claude CodeCodex

Written for no agent in particular: nothing here depends on one.

Good fit It is for choosing map providers by data location, routing map requests through a backend, loading the right mobile SDK, handling overseas access from China, and requesting location permission when needed.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/lh17708357536-gif/flutter-cn-overseas-app-skills/maps-location
Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

Any agent
npx skills add lh17708357536-gif/flutter-cn-overseas-app-skills --skill maps-location
Clone the repo
git clone --depth 1 https://github.com/lh17708357536-gif/flutter-cn-overseas-app-skills

Made for: Claude Code, Codex.

Wrote this? Show the measurements

A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.

agentmods badge for maps-location

README.md
[![agentmods](https://agentmods.dev/badge/skills/lh17708357536-gif/flutter-cn-overseas-app-skills/maps-location/github.svg)](https://agentmods.dev/skills/lh17708357536-gif/flutter-cn-overseas-app-skills/maps-location)
Your own site
<a href="https://agentmods.dev/skills/lh17708357536-gif/flutter-cn-overseas-app-skills/maps-location"><img src="https://agentmods.dev/badge/skills/lh17708357536-gif/flutter-cn-overseas-app-skills/maps-location/github.svg" alt="Measured on agentmods" height="20"></a>

Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.

agentmods 80×15 button for maps-location

Your own site · 80×15
<a href="https://agentmods.dev/skills/lh17708357536-gif/flutter-cn-overseas-app-skills/maps-location"><img src="https://agentmods.dev/badge/skills/lh17708357536-gif/flutter-cn-overseas-app-skills/maps-location.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 121 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 2,477 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.
Origin original No closer match found in the catalogue.
Token cost

What it costs to keep this loaded

Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.

ModelPer sessionOnce invoked
Fable 5.1 $0.00121 $0.02477
Opus 5 $0.00060 $0.01239
Sonnet 5 $0.00024 $0.00495
Haiku 4.5 $0.00012 $0.00248

Measured 12d ago against content hash db73d569ad00, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-12, from the pricing page.

Security

Grade A, and why

maps-location scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 12d ago.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Nothing flagged

None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.

skills/maps-location/SKILL.md · 157 lines

How it starts

The opening of the file, as written. The whole thing — 157 lines — stays where its author put it; the contents beside it link to each section on GitHub.

多区域地图与定位 Skill

覆盖"中国大陆用高德、其他地区用 Google/Mapbox"的双源路由。所有 <PLACEHOLDER> 替换为项目实际值。

核心决策依据是数据的归属地(如 hotel.country / 业务实体的 country),不是用户 IP、不是手机系统区域——同一个 App 里,展示北京的店用高德,展示东京的店用 Google,由数据决定。

1. ★ 地图源路由矩阵

数据归属地 地图源 网络路径
中国大陆(country='CN' 高德 Amap 直连(国内节点快、合规)
港澳台(HK/MO/TW) Google Maps 或 Mapbox Google 走海外中转;Mapbox 直连
海外(JP/US/EU/...) Google Maps 或 Mapbox 同上

flavor 叠加约束

  • cn_android:禁 Google(对应 cn-android-flavor §1)→ 只能用高德;若 cn 包需要显示海外地图,用高德的海外底图或静态图代理,不引入 Google Maps SDK
  • overseas_android / iOS:用 Google Maps 或 Mapbox;中国大陆数据仍建议走高德静态图(Google 在华不可靠)
  • ★ 路由决策放后端 _resolveMapSource(entityId),前端只拿"用哪个源 + 已代理好的 URL",不自己判断

2. 后端源决策 + Google 在华中转

// map.service.ts
type MapSource = 'amap' | 'google' | 'mapbox';

resolveMapSource(country: string): MapSource {
  if (country === 'CN') return 'amap';
  // 港澳台 + 海外:按项目策略选 google 或 mapbox
  return process.env.OVERSEAS_MAP_PROVIDER === 'mapbox' ? 'mapbox' : 'google';
}

Google Maps API 在中国大陆被墙 → 后端经海外节点中转(对应项目 nginx gemini_proxy.conf 同款思路):

.env:
GOOGLE_MAPS_KEY=<SERVER_SIDE_KEY>                 # ★ 服务端 key,限 IP,不下发前端
GMAPS_PROXY_BASE=https://<OVERSEAS_PROXY>/gmaps   # 海外 Nginx 反代 maps.googleapis.com
AMAP_WEB_KEY=<AMAP_WEB_SERVICE_KEY>               # 高德 Web 服务 key(服务端)
AMAP_JS_KEY=<AMAP_JS_KEY>                         # 高德 JS API key(前端/H5 用,配安全密钥)
MAPBOX_TOKEN=<MAPBOX_TOKEN>
OVERSEAS_MAP_PROVIDER=google                       # 或 mapbox

海外 Nginx 需代理三类端点(对应你项目已有的 /gmaps/static /gmaps/geocode/ /gplaces/):

location /gmaps/static/   { proxy_pass https://maps.googleapis.com/maps/api/staticmap; }
location /gmaps/geocode/  { proxy_pass https://maps.googleapis.com/maps/api/geocode/; }
location /gplaces/        { proxy_pass https://maps.googleapis.com/maps/api/place/; }

3. 静态地图(对客 H5 / 卡片最常用)

后端统一出静态图 URL,前端只贴 <img>,天然规避 SDK 与被墙问题:

staticMapUrl(source: MapSource, lat: number, lng: number, zoom = 15): string {
  switch (source) {
    case 'amap':                                          // 高德静态图
      return `https://restapi.amap.com/v3/staticmap?location=${lng},${lat}`
        + `&zoom=${zoom}&size=750*400&markers=mid,,A:${lng},${lat}&key=${process.env.AMAP_WEB_KEY}`;
    case 'google':                                        // 经海外中转
      return `${process.env.GMAPS_PROXY_BASE}/static/?center=${lat},${lng}`
        + `&zoom=${zoom}&size=750x400&markers=color:red%7C${lat},${lng}&key=${process.env.GOOGLE_MAPS_KEY}`;
    case 'mapbox':
      return `https://api.mapbox.com/styles/v1/mapbox/streets-v12/static/`
        + `pin-s+f00(${lng},${lat})/${lng},${lat},${zoom}/750x400?access_token=${process.env.MAPBOX_TOKEN}`;
  }
}
  • ★ 高德坐标是 经度,纬度(lng,lat);Google 是 纬度,经度(lat,lng)——顺序反了地图就飘到别的国家,这是头号 bug
  • ★ 高德用 GCJ-02 火星坐标,Google/Mapbox 用 WGS-84;跨源传坐标必须转换(见 §5)

Read the full file on GitHub · 157 lines

Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

  1. 12d ago First seen · 157 lines · 121 tokens per session scan A db73d569ad00

Subscribe to this mod's changes

maps-location is a skill published in the GitHub repository lh17708357536-gif/flutter-cn-overseas-app-skills (20 stars, last pushed 2mo ago), licensed MIT. It adds 121 tokens to every session and 2,477 once invoked, about $0.0006 per session on Opus 5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.

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