Fill up your car at the lowest possible price in Michigan and beat the Edgeworth Price Cycle by recieving notifications when prices are about to skyrocket!
Implemented an automatic token rotation system. If the API returns a 403 Forbidden, the script intercepts the error, hits the /refreshToken endpoint using the device fingerprint, updates the in-memory session, and retries the original request without crashing.
graph TD
%% --- Trigger ---
Start((Cron Timer)) -->|Every 5m| LoadState[Load Previous Prices]
LoadState --> ApiReq[POST /map/list]
subgraph "Authentication System"
ApiReq --> Status{Status Code?}
Status --403 Forbidden--> Refresh[POST /refreshToken]
Refresh -->|Using Device/Build ID| SaveToken[Update Token in RAM]
SaveToken -->|Retry Request| ApiReq
end
%% --- Section 2: Data Processing ---
Status --200 OK--> Transact[Begin SQLite Transaction]
Transact --> Iterate[Iterate Stations]
subgraph "Change Detection"
Iterate --> Compare{Price Changed?}
%% The Optimization: Skip DB if no change
Compare --No (Skip)--> Next
%% The Update Path
Compare --Yes--> DeltaCheck{Delta > $0.10?}
DeltaCheck --Yes--> Ping[Webhook: Ping]
DeltaCheck --No--> Silent[Webhook: Standard Alert]
Ping & Silent --> Insert[Stage DB Update]
Insert --> Next{More Stations?}
end
%% --- Section 3: Persistence ---
Next --Yes--> Iterate
Next --No--> Commit[Commit Transaction]
Commit --> Sleep([Wait for Next Cycle])
Fetch Wesco API to detect gas price increases in Michigan since they love to increase by 50 cents or more overnight due to midwest price cycling
API found by reverse engineering the wesco android app, may add other stations in the future
Once the first price change is detected, you usually have a few hours to get gas before it spikes 50 cents or more at your local station unless the first change happened to be your station.
Web page is experimental/laggy but you can see it at https://gas.moomoo.me
Nothing should have to be changed besides webhook url unless the API gets updated. The DEVICE UID can be any random string.