FS25 FarmMonitor

FS25 FarmMonitor gives your Farming Simulator 25 game a second screen. A lightweight Lua mod continuously exports silo levels, production chains, animal husbandries, goods, and field states as JSON, while a small Go server picks them up and pushes live updates to a dark-themed web dashboard via Server-Sent Events — no browser refresh needed. Keep an eye on your entire farm from a second monitor, a tablet on the desk, or any device on your local network.

Silos — Füllstände aller Silos und Lagergebäude

Produktionen — Ein- und Ausgänge aller Produktionsketten

Tierställe — Belegung, Fütterung, Gesundheit und Ausgänge pro Stall

Warenübersicht — Lagerbestände, Verkaufspreise und Preistrend-Indikatoren

Felder — Feldzustand, Bodenpflege, Bedarfsrechner und Ernteschätzung

Features

• Live JSON export — silos, productions, animal husbandries, goods, fields, fill types, fruit types and animal food recipes written to the modSettings folder every 10 s
• Unique placeable IDs — every silo, production point and husbandry carries a persistent uniqueId (from the savegame) and a savegameId (mapId + creationDate) for reliable cross-session identification
• Web dashboard — dark FS25-themed SPA with sidebar navigation, auto-refresh via Server-Sent Events and responsive layout
• Views: Overview (KPI tiles + active alerts), Silos, Productions, Tierställe, Warenübersicht, Felder, Alerts, Settings
• Tierställe — per-stall cards with occupancy, food groups, water, straw, outputs and computed status (OK / Watch / Warning / Critical); smart alerts weighted by consumption share (eatWeight)
• Warenübersicht — aggregated stock across all storage types per fill type, with current and maximum prices, price trend indicators (rising / falling / high demand), best selling month and colour-coded value rating
• Felder — per-field cards with fruit type, growth stage, harvest-readiness badge, projected yield, soil condition bars (plough, fertiliser, lime, mulch, roller, weeds, stones), seed requirement calculator and material need estimates (lime, fertiliser, herbicide)
• Seed calculator — interactive fruit type selector per field card; shows seed requirement in L/ha and total litres; selection persists in the browser
• Configurable alert thresholds — warn and critical levels for inputs (food/water/straw), outputs and occupancy are adjustable in the Settings view and stored globally
• Per-savegame visibility settings — hide individual placeables from the dashboard via the edit mode button; settings are persisted per savegame on the server
• Multiplayer — every player runs the mod locally; each sees their own farm's data written to their own modSettings folder

What it exports

File	Content	Updated
silos.json	All silo and silo extension fill levels	every 10 s
productions.json	Production point inputs, outputs and chain status	every 10 s
husbandries.json	Animal counts, food/water/straw levels, health and outputs (milk, manure, …)	every 10 s
goods.json	Aggregated fill levels per fill type across all storages, with current and max prices, price trends and best selling month	every 10 s
fields.json	Per-field fruit type, growth stage, harvest readiness, projected yield, soil conditions and material need estimates	every 60 s
fillTypes.json	All fill type names, titles and HUD icon paths	once on map load
fruitTypes.json	All fruit types with growth stage definitions, harvest stages, yield per m² and seed usage per m²	once on map load
animalFood.json	Food group recipes per animal type (consumption type, fill types, production and eat weights)	once on map load

All files are written to the modSettings directory:

• macOS: ~/Library/Application Support/FarmingSimulator2025/modSettings/FS25_FarmMonitor/
• Windows: Documents/My Games/FarmingSimulator2025/modSettings/FS25_FarmMonitor/

Dashboard

The dashboard is a single-page app served by a small Go binary (farmmonitor). It connects to the server via Server-Sent Events and re-renders automatically whenever the mod writes new data (~every 10 s).

The server automatically detects the JSON data directory from the FS25 modSettings folder — no need to run it from a specific location.

Start — Download (empfohlen)

Download the latest binary for your OS from the Releases page:

OS	File
macOS (Apple Silicon)	farmmonitor-macos-apple
macOS (Intel)	farmmonitor-macos-intel
Windows	farmmonitor-windows.exe

macOS: Make the file executable before running:

chmod +x farmmonitor-macos-apple
./farmmonitor-macos-apple

Note: macOS may block the binary on first launch. Go to System Settings → Privacy & Security and click Allow Anyway, or run:

xattr -d com.apple.quarantine farmmonitor-macos-apple

Windows: Double-click farmmonitor-windows.exe or run it from the terminal.

Start — Build from source (optional)

Requires Go 1.22+ to be installed.

cd path/to/FS25_FarmMonitor/Server
go build -o farmmonitor      # macOS / Linux
go build -o farmmonitor.exe  # Windows
./farmmonitor

Open http://localhost:8080 in a browser.

Options

Flag	Default	Description
-port	8080	HTTP listen port
-host	127.0.0.1	Listen address — use 0.0.0.0 for LAN / tablet access
-data	auto-detected	Path to the directory containing the JSON data files

./farmmonitor -host 0.0.0.0 -port 9000
./farmmonitor -data /custom/path/to/json/files

Navigation

View	Description
Overview	KPI tiles (silo count, active productions, stall count, open alerts) and a prioritised alert list
Silos	Fill-level bars for every silo and silo extension, grouped by placeable
Productions	Input/output bars and chain status (running / inactive / stopped) per production point with quicknav
Tierställe	Per-stall cards with occupancy, food groups (weighted), water, straw, outputs and computed alert status
Warenübersicht	Stock per fill type with current and max price, total value, price trend indicator, best selling month and colour-coded rating
Felder	Per-field cards: growth bar, projected yield, soil condition bars (split into soil quality and nuisances), seed calculator dropdown, and material need estimates for lime / fertiliser / herbicide
Alerts	Consolidated list of all active warnings and critical states across all categories
Settings	Configure alert thresholds for inputs, outputs and occupancy; toggle placeable visibility per savegame

Editing the dashboard view

Each section (Silos, Productions, Tierställe) has an „Ansicht bearbeiten" button in the top-right corner of the section header.

• Normal mode — hidden placeables are not shown
• Edit mode — all placeables are shown; a green eye means visible, a grey crossed-out eye means hidden; hidden cards are dimmed
• Clicking the eye icon on any card toggles its visibility immediately and saves the setting to the server

Settings are stored per savegame (identified by savegameId) so hiding a silo on one map does not affect other savegames.

Server settings storage

The server persists two kinds of settings using the platform config directory:

Kind	API	File location
Global dashboard settings	GET/PUT /api/settings	<configDir>/FS25_FarmMonitor/settings.json
Per-savegame placeable visibility	GET/PUT /api/savegame/{savegameId}	<configDir>/FS25_FarmMonitor/savegames/<hash>.json

Platform config directories:

• macOS: ~/Library/Application Support/
• Windows: %APPDATA%\
• Linux: ~/.config/

Installation

1. Copy the FS25_FarmMonitor folder into your FS25 mods directory:
   • macOS: ~/Library/Application Support/FarmingSimulator2025/mods/
   • Windows: Documents/My Games/FarmingSimulator2025/mods/
2. Enable the mod in the in-game mod manager.
3. Load a savegame — the JSON files appear in the modSettings folder within the first few seconds.
4. Build and start the dashboard server from the Server folder (see above).

JSON structure

silos.json

{
  "timestamp": "2026-05-03T22:49:23",
  "farmId": 1,
  "savegame": "Mein Hof",
  "savegameId": "MapUS_2026-02-15",
  "silos": [
    {
      "uniqueId": "abc-123",
      "name": "Grosses Silo",
      "type": "silo",
      "capacity": 200000,
      "contents": [
        { "fillType": "WHEAT", "title": "Weizen", "level": 45000 }
      ]
    }
  ]
}

productions.json

{
  "timestamp": "2026-05-03T22:49:23",
  "farmId": 1,
  "savegame": "Mein Hof",
  "savegameId": "MapUS_2026-02-15",
  "productions": [
    {
      "uniqueId": "def-456",
      "name": "Bäckerei",
      "inputs":  [ { "fillType": "WHEAT", "title": "Weizen", "level": 1200, "capacity": 5000 } ],
      "outputs": [ { "fillType": "BREAD", "title": "Brot",   "level":  300, "capacity": 1000 } ],
      "productions": [
        { "id": "bread", "name": "Brot backen", "status": "running", "cyclesPerMonth": 12 }
      ]
    }
  ]
}

husbandries.json

{
  "timestamp": "2026-05-03T22:49:23",
  "farmId": 1,
  "savegame": "Mein Hof",
  "savegameId": "MapUS_2026-02-15",
  "husbandries": [
    {
      "uniqueId": "ghi-789",
      "name": "Kuhstall",
      "animalType": "COW",
      "numAnimals": 24,
      "maxAnimals": 30,
      "food":      [ { "title": "Mischration", "value": 800, "capacity": 1000 } ],
      "foodTotal": { "value": 800, "capacity": 1000, "ratio": 0.8 },
      "water":     { "value": 600, "capacity": 1000 },
      "straw":     { "value": 400, "capacity": 1000 },
      "health":    92,
      "outputs": [
        { "fillType": "MILK",   "title": "Milch", "level": 4200, "capacity": 10000 },
        { "fillType": "MANURE", "title": "Mist",  "level":  800, "capacity":  5000 }
      ]
    }
  ]
}

Field reference:

Field	Type	Description
uniqueId	string	Persistent placeable ID from the savegame
name	string	Placeable name set by the player
animalType	string	Animal type identifier (e.g. COW, PIG) or "unknown"
numAnimals	number	Current animal count
maxAnimals	number	Maximum capacity
food	array	Food trough entries with title, value and capacity per group
foodTotal	object|null	Combined food level { value, capacity, ratio } — null if stall has no food trough
water	object|null	Water level { value, capacity } — null if stall has no water trough
straw	object|null	Straw bedding level { value, capacity } — null if stall uses no straw
health	number|null	Average animal health 0–100 — null if no animals are present
outputs	array	Output storage entries with fillType, title, level and capacity

fillTypes.json

{
  "savegameId": "MapUS_2026-02-15",
  "fillTypes": [
    {
      "name": "WHEAT",
      "title": "Weizen",
      "hudOverlayFilename": "dataS/menu/hud/fillTypes/hud_fill_wheat.png"
    }
  ]
}

Icon paths use two formats depending on their origin:

• Base game: dataS/menu/hud/fillTypes/... — relative to the FS25 installation directory
• Mods: absolute path to the mod folder

animalFood.json

{
  "savegameId": "MapUS_2026-02-15",
  "animalFood": {
    "PIG": {
      "consumptionType": "PARALLEL",
      "groups": [
        { "title": "Mais Sorghum",                 "productionWeight": 0.5,  "eatWeight": 0.5,  "fillTypes": ["CORN", "SORGHUM"] },
        { "title": "Weizen Gerste Hafer",          "productionWeight": 0.25, "eatWeight": 0.25, "fillTypes": ["WHEAT", "BARLEY", "OAT"] },
        { "title": "Sojabohnen Raps Sonnenblumen", "productionWeight": 0.2,  "eatWeight": 0.2,  "fillTypes": ["SOYBEAN", "CANOLA", "SUNFLOWER"] },
        { "title": "Kartoffeln Zuckerrüben …",     "productionWeight": 0.05, "eatWeight": 0.05, "fillTypes": ["POTATO", "SUGARBEET"] }
      ]
    },
    "COW": {
      "consumptionType": "SERIAL",
      "groups": [
        { "title": "TMR",  "productionWeight": 1.0, "eatWeight": 1.0, "fillTypes": ["FORAGE_MIXING"] },
        { "title": "Heu",  "productionWeight": 0.8, "eatWeight": 1.0, "fillTypes": ["DRYGRASS_WINDROW"] },
        { "title": "Gras", "productionWeight": 0.4, "eatWeight": 1.0, "fillTypes": ["GRASS_WINDROW"] }
      ]
    }
  }
}

One entry per animal type.

Field	Description
consumptionType	PARALLEL — all groups consumed simultaneously (e.g. pigs); SERIAL — groups are alternatives, best available is used (e.g. cows)
productionWeight	Productivity factor this group provides (0–1). For PARALLEL: also the share of total consumption
eatWeight	Consumption share for PARALLEL animals (0–1, all groups sum to 1). Used to scale alert thresholds so minor components don't trigger false alarms
fillTypes	Fill type identifiers accepted by this group

savegameId

All five JSON files include a savegameId field composed of mapId + "_" + creationDate (e.g. MapUS_2026-02-15). This uniquely identifies the active savegame and is used by the dashboard server to scope visibility settings per save.

Notes

• Multiplayer is supported — each player runs the mod locally and sees their own farm's data. Dedicated servers (no local player) are not supported.
• The JSON files are gitignored and not part of this repository — they are generated at runtime.
• fillTypes.json and animalFood.json are written once per session since their definitions do not change while a map is loaded.
• Lua serialises empty arrays as {} (empty object) rather than []. The dashboard handles this transparently.
• The dashboard server can be started from any directory — it automatically locates the JSON files in the modSettings folder. Use -data to override the path manually.

Credits

The following mods were used as references for FS25 Lua API patterns during development. No code was copied directly — they served as documentation where no official API reference exists.

Mod	Author	Used for
FS25_RealisticLivestockRM	Ritter	AnimalFoodSystem API, food group patterns (eatWeight, consumptionType, SERIAL/PARALLEL), husbandry food level methods
FS25_TSStockCheck	twproductions	Silo, silo-extension, husbandry storage and production storage access patterns
FS25_additionalFieldInfo	yumi-modding	Field state iteration via g_farmlandManager.farmlands
FS25_BetterContracts	Mmtrx	Practical usage of field state APIs
FS25_FarmlandOverview	Fetty42	DensityMapModifier approach for soil state sampling (mulch, plow, roll, fert, lime, weeds, stones) and getHarvestScaleMultiplier yield bonus
FS25_fieldCalculator	[Weekend Farmers] T4xs	Inspiration for the field need calculator (seed usage via ft.seedUsagePerSqm, spray type application rates via g_sprayTypeManager)

Third-party libraries

Library	License	Used for
Tabler Icons	MIT © 2020-2026 Paweł Kuna	Icons in the dashboard UI

Full license texts are listed in THIRD_PARTY_NOTICES.