Agent skill

Location System

by OpenLitterMap in OpenLitterMap/openlittermap-web

Countries, states, cities, ResolveLocationAction, Location base model, LocationType enum, geocoding, and location-level Redis data.

GPL-3.0Auto-check passedDatabases

Install Location System

skills CLI

$ npx skills add OpenLitterMap/openlittermap-web --skill location-system -a claude-code

Project install by default; add -g for ~/.claude/skills/.

GitHub CLI

$ gh skill install OpenLitterMap/openlittermap-web location-system --agent claude-code

Project scope by default; add --scope user for a personal install. Needs GitHub CLI 2.90.0 or later (public preview).

Manual copy

$ git clone --depth 1 https://github.com/OpenLitterMap/openlittermap-web.git skills-src && mkdir -p .claude/skills && cp -r skills-src/.ai/skills/location-system .claude/skills/location-system && rm -rf skills-src

Use ~/.claude/skills/ instead of .claude/skills for a personal install. The folder must contain SKILL.md.

Claude Code skills documentation · loads skills from .claude/skills/

Paste into Claude Code

Install the "location-system" agent skill from https://github.com/OpenLitterMap/openlittermap-web/tree/master/.ai/skills/location-system into .claude/skills/location-system/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "location-system", then confirm the skill loads.

Claude Code copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.

$skill-installer

$skill-installer install https://github.com/OpenLitterMap/openlittermap-web/tree/master/.ai/skills/location-system

Type this inside Codex. $skill-installer <name> installs a curated skill from openai/skills. The installer writes to $CODEX_HOME/skills (default ~/.codex/skills). Restart Codex if the skill does not show up.

skills CLI

$ npx skills add OpenLitterMap/openlittermap-web --skill location-system -a codex

Project install goes to .agents/skills/; add -g for ~/.codex/skills/.

GitHub CLI

$ gh skill install OpenLitterMap/openlittermap-web location-system --agent codex

Project scope by default (.agents/skills/); add --scope user for a personal install.

Manual copy

$ git clone --depth 1 https://github.com/OpenLitterMap/openlittermap-web.git skills-src && mkdir -p .agents/skills && cp -r skills-src/.ai/skills/location-system .agents/skills/location-system && rm -rf skills-src

Use ~/.agents/skills/ instead of .agents/skills for a personal install.

Codex skills documentation · loads skills from .agents/skills/

Paste into Codex

Install the "location-system" agent skill from https://github.com/OpenLitterMap/openlittermap-web/tree/master/.ai/skills/location-system into .agents/skills/location-system/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "location-system", then confirm the skill loads.

Codex copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.

skills CLI

$ npx skills add OpenLitterMap/openlittermap-web --skill location-system -a cursor

Project install goes to .agents/skills/; add -g for ~/.cursor/skills/.

GitHub CLI

$ gh skill install OpenLitterMap/openlittermap-web location-system --agent cursor

Project scope by default (.agents/skills/); add --scope user for a personal install.

Manual copy

$ git clone --depth 1 https://github.com/OpenLitterMap/openlittermap-web.git skills-src && mkdir -p .cursor/skills && cp -r skills-src/.ai/skills/location-system .cursor/skills/location-system && rm -rf skills-src

Use ~/.cursor/skills/ instead of .cursor/skills for a personal install.

Cursor skills documentation · loads skills from .cursor/skills/, .agents/skills/, .claude/skills/, .codex/skills/

Paste into Cursor

Install the "location-system" agent skill from https://github.com/OpenLitterMap/openlittermap-web/tree/master/.ai/skills/location-system into .cursor/skills/location-system/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "location-system", then confirm the skill loads.

Cursor copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.

gemini skills install

$ gemini skills install https://github.com/OpenLitterMap/openlittermap-web.git --path .ai/skills/location-system

--scope user (default) or --scope workspace; --path is the subfolder of the repo that holds the skill; --consent skips the security confirmation prompt.

skills CLI

$ npx skills add OpenLitterMap/openlittermap-web --skill location-system -a gemini-cli

Project install goes to .agents/skills/; add -g for ~/.gemini/skills/.

GitHub CLI

$ gh skill install OpenLitterMap/openlittermap-web location-system --agent gemini-cli

Project scope by default (.agents/skills/); add --scope user for a personal install.

Manual copy

$ git clone --depth 1 https://github.com/OpenLitterMap/openlittermap-web.git skills-src && mkdir -p .gemini/skills && cp -r skills-src/.ai/skills/location-system .gemini/skills/location-system && rm -rf skills-src

Use ~/.gemini/skills/ instead of .gemini/skills for a personal install, then run /skills reload.

Gemini CLI skills documentation · loads skills from .gemini/skills/, .agents/skills/

Paste into Gemini CLI

Install the "location-system" agent skill from https://github.com/OpenLitterMap/openlittermap-web/tree/master/.ai/skills/location-system into .gemini/skills/location-system/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "location-system", then confirm the skill loads.

Gemini CLI copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.

GitHub CLI

$ gh skill install OpenLitterMap/openlittermap-web location-system

Installs for Copilot at project scope by default; add --scope user for a personal install. Preview a skill first with gh skill preview. Needs GitHub CLI 2.90.0 or later (public preview).

skills CLI

$ npx skills add OpenLitterMap/openlittermap-web --skill location-system -a github-copilot

Project install goes to .agents/skills/; add -g for ~/.copilot/skills/.

Manual copy

$ git clone --depth 1 https://github.com/OpenLitterMap/openlittermap-web.git skills-src && mkdir -p .github/skills && cp -r skills-src/.ai/skills/location-system .github/skills/location-system && rm -rf skills-src

Use ~/.copilot/skills/ instead of .github/skills for a personal install. Commit .github/skills so cloud agent and code review can use it.

GitHub Copilot skills documentation · loads skills from .github/skills/, .claude/skills/, .agents/skills/

Paste into GitHub Copilot

Install the "location-system" agent skill from https://github.com/OpenLitterMap/openlittermap-web/tree/master/.ai/skills/location-system into .github/skills/location-system/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "location-system", then confirm the skill loads.

GitHub Copilot copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.

skills CLI

$ npx skills add OpenLitterMap/openlittermap-web --skill location-system -a opencode

OpenCode documents no install command of its own. Project install goes to .agents/skills/; add -g for ~/.config/opencode/skills/.

GitHub CLI

$ gh skill install OpenLitterMap/openlittermap-web location-system --agent opencode

Project scope by default (.agents/skills/); add --scope user for a personal install.

Manual copy

$ git clone --depth 1 https://github.com/OpenLitterMap/openlittermap-web.git skills-src && mkdir -p .opencode/skills && cp -r skills-src/.ai/skills/location-system .opencode/skills/location-system && rm -rf skills-src

Use ~/.config/opencode/skills/ instead of .opencode/skills for a personal install.

OpenCode skills documentation · loads skills from .opencode/skills/, .claude/skills/, .agents/skills/

Paste into OpenCode

Install the "location-system" agent skill from https://github.com/OpenLitterMap/openlittermap-web/tree/master/.ai/skills/location-system into .opencode/skills/location-system/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "location-system", then confirm the skill loads.

OpenCode copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.

Facts

Skill name: location-system
GitHub stars: 134
Token cost: ~1.7k tokens
SKILL.md length: 391 words
Files: 1
Skills in repo: 16
Repo updated: Sep 14, 2026
First seen: Oct 7, 2026
Licence: GPL-3.0

At a glance

Countries, states, cities, ResolveLocationAction, Location base model, LocationType enum, geocoding, and location-level Redis data.

Works in 5 steps: Location tables store identity only. No… → Photo table uses FK columns only:… → Redis is a derived cache. All Redis… → …
Tasks that involve Geospatial analysis
SKILL.md covers Key Files, Invariants, Patterns and LocationController API (v1), plus 1 more section
Instructions only: no scripts, shell commands, URLs or credentials in SKILL.md

What it does

Location System is an agent skill from OpenLitterMap/openlittermap-web. Countries, states, cities, ResolveLocationAction, Location base model, LocationType enum, geocoding, and location-level Redis data.

Its SKILL.md is about 1.7k tokens, which your agent loads only when the skill is triggered. It is a single SKILL.md file with no bundled scripts.

It sits in Databases, covering Geospatial analysis. It works with Redis and PHP. The repository describes itself as: https://opengeospatialdata.springeropen.com/articles/10.1186/s40965-018-0050-y. The licence is GPL-3.0.

When your agent uses it

Tasks that involve Geospatial analysis

Example prompts

“/location-system”

Workflow steps

5 steps, taken from the first numbered list in SKILL.md.

Location tables store identity only. No total_* counters, no manual_verify, no aggregates. All stats come from Redis or the metrics table.
Photo table uses FK columns only: country_id, state_id, city_id. Deprecated string columns (country, county, city, display_name, location…
Redis is a derived cache. All Redis location data is rebuildable from the metrics table.
HyperLogLog for contributor counts. PFCOUNT gives ~0.81% error, O(1) space, append-only (cannot decrement).
Country uses shortcode as route key, not id. Routes: /countries/{shortcode}.

What it can do on your machine

Read from SKILL.md and the folder at commit ac688aa. It shows what the files ask for, not the result of running them.

Tool permissions
Pre-approves nothing: there is no allowed-tools line, so your agent's usual permission prompts apply.
From allowed-tools in the SKILL.md frontmatter.
Runs code
No scripts in the folder and no shell commands in SKILL.md (its code samples are php, sql and json).
From the folder's file list and the shell code blocks in SKILL.md.
Network
No URLs in SKILL.md.
From URLs in SKILL.md, links to its own repository left out.
Credentials
Names no API keys, tokens, secrets or passwords.
From names ending in _API_KEY, _TOKEN, _SECRET, _KEY or _PASSWORD in SKILL.md.

Context cost

Location System loads about 1.7k tokens when it runs. Until then it costs about 37 tokens; SKILL.md has 391 words of instructions outside code blocks.

Always · name and description, kept in context so the agent knows when to use it: ~37
When it runs · the whole SKILL.md, loaded when a task matches: ~1.7k

Estimates: characters ÷ 4, the usual rule of thumb; real counts depend on the model's tokenizer. Scripts and assets cost tokens only if the agent reads them.

Safety

Auto-check passed

The automated check found no risky patterns in SKILL.md.

Automated static check — not a guarantee. Review scripts before installing. It scans the text of SKILL.md for risky patterns (piping downloads into a shell, reading credential files, hidden Unicode, destructive commands); files beside SKILL.md are not scanned.

SKILL.md

The full file from OpenLitterMap/openlittermap-web at commit ac688aa, republished under its GPL-3.0 licence (© OpenLitterMap). 391 words, ~1,733 tokens.

Download SKILL.mdSave it as .claude/skills/location-system/SKILL.md (or your agent's skills folder).

name: location-system
description: Countries, states, cities, ResolveLocationAction, Location base model, LocationType enum, geocoding, and location-level Redis data.

Location System

Location tables store identity only (name, shortcode, FKs). All aggregates live in the metrics table and Redis. The Location base model computes all stats from Redis on access via $appends.

Key Files

app/Models/Location/Location.php — Abstract base model with Redis-backed computed attributes
app/Models/Location/Country.php — Route key: shortcode (ISO 3166-1 alpha-2)
app/Models/Location/State.php — Belongs to Country
app/Models/Location/City.php — Belongs to Country + State
app/Actions/Locations/ResolveLocationAction.php — Lat/lon -> Country/State/City via geocoding
app/Actions/Locations/ReverseGeocodeLocationAction.php — LocationIQ API wrapper
app/Actions/Locations/LocationResult.php — DTO returned by ResolveLocationAction
app/Enums/LocationType.php — Global(0), Country(1), State(2), City(3)
app/Enums/Timescale.php — AllTime(0), Daily(1), Weekly(2), Monthly(3), Yearly(4)

Invariants

Location tables store identity only. No total_* counters, no manual_verify, no aggregates. All stats come from Redis or the metrics table.
Photo table uses FK columns only: country_id, state_id, city_id. Deprecated string columns (country, county, city, display_name, location, road) are dropped.
Redis is a derived cache. All Redis location data is rebuildable from the metrics table.
HyperLogLog for contributor counts. PFCOUNT gives ~0.81% error, O(1) space, append-only (cannot decrement).
Country uses shortcode as route key, not id. Routes: /countries/{shortcode}.

Patterns

ResolveLocationAction

php

// app/Actions/Locations/ResolveLocationAction.php
public function run(float $lat, float $lon): LocationResult
{
    $address = $this->reverseGeocode->run($lat, $lon);

    $country = $this->resolveCountry($address);  // firstOrCreate by country_code
    $state   = $this->resolveState($country, $address);
    $city    = $this->resolveCity($country, $state, $address);

    return new LocationResult($country, $state, $city, $address, $displayName);
}

Lookup strategy for city: Searches keys in order: city, town, city_district, village, hamlet, locality, county.

LocationResult DTO

php

readonly class LocationResult
{
    public function __construct(
        public Country $country,
        public State   $state,
        public City    $city,
        public array   $addressArray,
        public string  $displayName,
    ) {}
}

LocationType enum

php

enum LocationType: int
{
    case Global  = 0;   // dbColumn: null,       scopePrefix: {g}
    case Country = 1;   // dbColumn: country_id, scopePrefix: {c:$id}
    case State   = 2;   // dbColumn: state_id,   scopePrefix: {s:$id}
    case City    = 3;   // dbColumn: city_id,     scopePrefix: {ci:$id}

    public function dbColumn(): ?string
    public function scopePrefix(int $id = 0): string
    public function modelClass(): ?string
    public function parentType(): ?self
}

Location model computed attributes (from Redis)

php

// All appended attributes on Country/State/City models:
$country->total_litter_redis      // HGET {c:$id}:stats litter
$country->total_photos_redis      // HGET {c:$id}:stats uploads
$country->total_contributors_redis // PFCOUNT {c:$id}:hll
$country->total_xp               // HGET {c:$id}:stats xp
$country->litter_data             // HGETALL {c:$id}:cat  (resolved to names)
$country->objects_data            // top 20 from {c:$id}:obj
$country->materials_data          // HGETALL {c:$id}:mat
$country->brands_data             // HGETALL {c:$id}:brands
$country->ppm                     // Cached time-series from metrics table (15min TTL)
$country->recent_activity         // Last 7 days daily counts (5min TTL)

Location hierarchy rankings

php

RedisKeys::globalCountryLitterRanking()           // {g}:rank:c:litter (ZSET)
RedisKeys::globalCountryPhotosRanking()           // {g}:rank:c:photos
RedisKeys::countryStateRanking($countryId, $metric)  // {c:$id}:rank:s:$metric
RedisKeys::stateCityRanking($stateId, $metric)       // {s:$id}:rank:ci:$metric

Database schema (identity only)

sql

countries (id, country, shortcode UNIQUE, created_by, timestamps)
states    (id, state, country_id, created_by, timestamps, UNIQUE(country_id, state))
cities    (id, city, country_id, state_id, created_by, timestamps, UNIQUE(country_id, state_id, city))

LocationController API (v1)

app/Http/Controllers/Location/LocationController.php serves the locations browsing UI.

Endpoints

GET /api/v1/locations — Global view: list of countries with stats
GET /api/v1/locations/{type}/{id} — Drill into country/state/city

Show full SKILL.md (165 more words)Show less

Response keys

json

{
    "stats": { "countries": 120, "photos": 50000, "tags": 150000, ... },
    "locations": [
        {
            "id": 1, "name": "Ireland", "shortcode": "IE",
            "total_tags": 5000, "total_images": 1200, "total_members": 45,
            "xp": 15000, "created_at": "...", "updated_at": "...",
            "pct_tags": 3.3, "pct_photos": 2.4, "avg_tags_per_person": 111.1
        }
    ],
    "location_type": "country",
    "breadcrumbs": [ ... ],
    "activity": { "today": { ... }, "this_month": { ... } }
}

Key naming: Response uses locations (not children) and location_type (not children_type). Children use total_tags, total_images, total_members (not tags, photos, contributors). The Pinia store useLocationsStore reads these exact keys.

Time filtering

Supports ?period=today|yesterday|this_month|last_month|this_year and ?year=2024 query params. Mutually exclusive — year clears period and vice versa.

Common Mistakes

Adding aggregate columns to location tables. Aggregates live in metrics table and Redis. Location tables are identity only.
Using deprecated photo string columns. country, county, city, display_name, location, road are dropped. Use country_id, state_id, city_id FKs.
Routing countries by ID instead of shortcode. Country model has getRouteKeyName(): 'shortcode'.
Treating Redis location stats as authoritative. They're derived caches. The metrics table is source of truth.
Decrementing HyperLogLog. PFCOUNT is append-only. You cannot remove a contributor from HLL.
Forgetting GeocodingException. ResolveLocationAction::run() throws GeocodingException when geocoding fails. Always handle this.
Using children or children_type in API responses. The correct keys are locations and location_type.
Filtering locations by manual_verify. This deprecated column is no longer used. Don't scope queries with it.

Files

Just SKILL.md in .ai/skills/location-system of OpenLitterMap/openlittermap-web.

Open the folder on GitHubat commit ac688aa

Compare with similar skills

Location System next to the 5 skills that share the most tags, products or categories with it. Stars are the repository's; “used in” counts other GitHub owners with a copy.

Location System compared with similar skills
Skill	Stars	Used in	Tokens	Auto-check	Licence	Repo updated
Location System this skillOpenLitterMap/openlittermap-web	134	—	~1.7k	Automated safety check: Pass	GPL-3.0	23 days ago
Configuring Horizoncoollabsio/coolify	63k	4 repos	~898	Automated safety check: Pass	MIT	today
Laravel Sessions MiddlewareHoangNguyen0403/agent-skills-standard	571	—	~830	Automated safety check: Notes	MIT	today
Runtime Behavior Proberedis/node-redis	18k	—	~4.4k	Automated safety check: Pass	MIT	yesterday
Implement Commandredis/node-redis	18k	—	~5k	Automated safety check: Pass	MIT	yesterday
Redis Insight Pluginredis/RedisInsight	8.9k	—	~3.5k	Automated safety check: Pass	MIT	3 days ago

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Questions about Location System

What does Location System do?

Countries, states, cities, ResolveLocationAction, Location base model, LocationType enum, geocoding, and location-level Redis data. Location System is an agent skill from OpenLitterMap/openlittermap-web. Countries, states, cities, ResolveLocationAction, Location base model, LocationType enum, geocoding, and location-level Redis data.

When should I use Location System?

Location System fits situations like: tasks that involve Geospatial analysis.

How do I install Location System in Claude Code?

Run `npx skills add OpenLitterMap/openlittermap-web --skill location-system -a claude-code`. Or copy the skill folder (.ai/skills/location-system in OpenLitterMap/openlittermap-web) into .claude/skills/location-system in your project. Claude Code loads it when a task matches its description.

How do I install Location System in Codex?

Run `npx skills add OpenLitterMap/openlittermap-web --skill location-system -a codex`. Or copy the skill folder (.ai/skills/location-system in OpenLitterMap/openlittermap-web) into .agents/skills/location-system in your project. Codex loads it when a task matches its description.

Can I use Location System in Cursor, Gemini CLI or GitHub Copilot?

Cursor, Gemini CLI, GitHub Copilot and OpenCode also load SKILL.md folders. With the skills CLI, run `npx skills add OpenLitterMap/openlittermap-web --skill location-system -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/location-system, .gemini/skills/location-system, .github/skills/location-system and .opencode/skills/location-system in your project.

What does Location System need to run?

SKILL.md names no scripts, command-line tools or credentials: Location System is instructions for the agent only.

Does Location System access the network?

SKILL.md contains no URLs. Any network use would come from the scripts or tools the agent runs. This is read from the text; nothing was executed.

Is Location System safe to install?

Our automated static check of SKILL.md found no risky patterns, such as piping downloads into a shell, reading credential files or hidden Unicode. It is not a guarantee. Review the folder before installing.

What licence does Location System use?

Location System is published under the GPL-3.0 licence (the repository's licence). It allows redistribution, so the full SKILL.md is shown on this page.

How many tokens does Location System use?

About 1.7k tokens (SKILL.md is roughly 6.9k characters). Agents keep only the skill's name and description in context until a task matches; then they load SKILL.md in full.

What are the alternatives to Location System?

Skills that share tags, products or a category with Location System: Configuring Horizon (coollabsio/coolify, 63k stars), Laravel Sessions Middleware (HoangNguyen0403/agent-skills-standard, 571 stars), Runtime Behavior Probe (redis/node-redis, 18k stars) and Implement Command (redis/node-redis, 18k stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.

Who maintains Location System?

OpenLitterMap (a GitHub organization) maintains it in OpenLitterMap/openlittermap-web, which has 134 GitHub stars. The repository holds 16 skills in this directory. The repository was last updated on September 14, 2026.

Source: OpenLitterMap/openlittermap-web on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.

Install Location System

Facts

At a glance

What it does

When your agent uses it

Example prompts

Workflow steps

What it can do on your machine

Tool permissions

Runs code

Network

Credentials

Context cost

Safety

SKILL.md

Location System

Key Files

Invariants

Patterns

ResolveLocationAction

LocationResult DTO

LocationType enum

Location model computed attributes (from Redis)

Location hierarchy rankings

Database schema (identity only)

LocationController API (v1)

Endpoints

Response keys

Time filtering

Common Mistakes

Files

Compare with similar skills

Similar skills

More from OpenLitterMap/openlittermap-web

Related

Questions about Location System