Data sources and methodology
Where the numbers come from, how fresh they are, and how to get one fixed.
Nothing on this site asks a game server for data while you browse. Small scripts fetch public game data on a schedule and save a copy; the pages read that copy. That keeps the site fast and keeps load off the games' servers, but it also means a price or a timer can be a few minutes (or, for hand-refreshed data, a few days) behind the game.
Sources and refresh cadence
| Game | Source | What it feeds | Refresh |
|---|---|---|---|
| IdleMMO | Official IdleMMO public API (api.idle-mmo.com) | World bosses, enemies, dungeons, locations and companion exchange listings; separate timed jobs refresh market prices, item sheets and tracked character profiles. | Lists every 5 minutes; market prices daily; tracked character profiles daily; item sheets weekly. |
| Idle Clans | Idle Clans public API (query.idleclans.com), plus the official press kit for artwork | Player-market prices, clan rankings and the game-data file that skill, item and recipe pages are built from. | Every 30 minutes for prices and rankings; the large game-data file at most about once a day. |
| Milky Way Idle | Community MWIApi JSON files (github.com/holychikenz/MWIApi) | Item list and median market prices used by the market board and trading calculators. | Refreshed by hand, not on a timer. Each page shows the date of the snapshot it was built from. |
| SimpleMMO | SimpleMMO community wiki (Fandom) and the official site | Combat damage and level XP formulas used by the calculators. | Static. Re-checked when the game announces a formula change. |
| WalkScape | Official WalkScape site, press kit and wiki | The step planner works from your own step numbers; game facts on the section link to the page they came from. | Static. |
The IdleMMO data-freshness page shows the exact age of each IdleMMO dataset. Other data pages show their own refresh time.
What is checked
- Calculator formulas are written out on each calculator page, and the code behind them is covered by the project's automated tests.
- The IdleMMO API endpoints were checked one by one before the cache script was allowed to use them.
- Facts on the game comparison pages carry the source link and the date that source was read. A fact with no source we trust is left out rather than guessed.
- Data pages show when their cache was last refreshed, and the IdleMMO data-freshness page lists the age of every dataset.
What is not checked
- Prices, listings and rankings are shown as the game or community API reported them at refresh time. They are not checked by hand, and the in-game market may have moved since.
- Formulas taken from a community wiki are not independently confirmed by the game's developers.
- Gold-per-hour and time-to-level figures are estimates from the inputs you give. Your boosts, gear and luck will change the real result.
Guides
Where a guide states a game mechanic, it links to the source it came from, or says plainly that the number is an estimate.
Corrections
If a number is wrong, email [email protected] with the page URL, the value shown, the value you expected and where yours comes from (an in-game screenshot or an official page is best). See the contact page for a template. Confirmed errors are fixed in the data or the page itself, not hidden behind a note.
Not affiliated
IdleMMO Tools is an independent fan project. It is not affiliated with, endorsed by, or operated by the developers of any game it covers. Game names, items and artwork belong to their respective owners.
Last reviewed: October 15, 2026.