DeltaMath GitHub Scripts — Why They Keep Breaking
There is a steady stream of DeltaMath scripts on GitHub, and a steady stream of people searching for them because the last one stopped working. That cycle is not bad luck and it is not the authors being careless — it is structural, and understanding why explains what to look for in a script that will last more than a fortnight. This page covers the three formats these tools come in, the specific reason they decay, how to read a repository before you run its code, and the risk in the “paste this into the console” instruction.
- Three formats circulate: userscripts (Tampermonkey), bookmarklets (a link you click), and unpacked extensions from a repo.
- They break because they target the page’s internal structure, and that structure changes whenever DeltaMath ships a front-end update.
- DeltaMath’s answer boxes are a maths input, not plain text fields — writing to them is far harder than it looks, and most scripts do it badly.
- Pasting unread code into the browser console runs it with your full session access. That is the actual risk, not detection.
The Three Formats
“DeltaMath script,” “DeltaMath hacks bookmark” and “DeltaMath solver extension github” are searched separately but usually lead to one of three things.
Userscript
A .user.js file run through Tampermonkey or Violentmonkey. Installs in seconds, runs automatically on the DeltaMath domain, and updates only if the author pushes a new version and you notice.
Bookmarklet
JavaScript stored in a bookmark's URL field, triggered by clicking it while on the page. No extension needed, which is why it circulates on school-managed devices — and severely limited in what it can do.
Unpacked extension
A repository you download and load through Chrome's developer mode. More capable than the other two, and it disables itself or nags on every browser restart because Chrome treats unpacked extensions as a development feature.
Capability rises down that list and so does friction. The bookmarklet is the easiest to run and the least able; the unpacked extension can do the most and is the most annoying to keep loaded.
Why They Break: Selector Drift
Here is the mechanism, and it applies to essentially every script of this kind on every platform.
A script cannot see a DeltaMath problem the way you do. It sees the page's underlying structure, and to find the question text it has to be told where to look — something along the lines of “the element with class problem-text inside the container with id question-panel.” Those names are internal implementation details of DeltaMath's front end.
Nobody at DeltaMath promised those names would stay the same. They are not a public interface; they are the inside of the building. So when the front end gets rebuilt, refactored, or run through a bundler that generates fresh class names, every script pointing at the old names finds nothing.
The script does not usually announce that it broke. It just silently does nothing, or fills the wrong box, or reads a stale value — which is why the common experience is “it worked last month and now it does not, and there is no error.”
A maintained extension has the same dependency. The difference is that somebody is watching for the break and shipping a fix, rather than a repository sitting untouched since the author finished the school year.
The Maths-Input Problem
This is the specific technical reason DeltaMath is harder to script than most homework platforms, and it is worth understanding because it explains why so many scripts half-work.
DeltaMath answers are not typed into ordinary text fields. They go through a mathematics editor — the thing that gives you stacked fractions, radical signs, exponents and the interval-notation buttons. Underneath, that editor keeps its own internal model of the expression and renders a visual representation from it.
So a script cannot simply set the field's value to 3/2. There is no field to set. It has to drive the editor the way a person would, producing the events the editor is listening for in the order it expects them. Get that wrong and you see the classic failure modes:
- The answer appears on screen but is not registered — the visual layer updated and the internal model did not.
- The whole expression ends up inside the denominator — the script never sent the keystroke that exits a fraction.
- Radicals and exponents come out as literal characters — a caret typed as text instead of entering exponent mode.
- The submit button stays disabled — the editor never fired the change event that tells the page an answer exists.
Simple algebra with whole-number answers usually survives this. Fractions, radicals and interval notation frequently do not — which is precisely the material the harder modules are made of.
Reading a Repository Before You Run It
If you are going to use one anyway, thirty seconds on the repository page tells you most of what matters.
| Check | Where | What you want to see |
|---|---|---|
| Last commit date | Next to the file list | Recent. A script untouched for a year predates several front-end updates. |
| Open issues | Issues tab | Read the newest ones first. “Not working anymore” threads with no reply are the clearest possible signal. |
| Is the code readable? | Open the main file | Plain JavaScript you can skim. Heavy obfuscation or a single minified line in a small hobby project is a reason to walk away. |
| What does it talk to? | Search the source for fetch | Requests to a server that is not DeltaMath mean your problem data — and possibly more — is being sent somewhere. |
| Fork or original? | Top of the page | Long fork chains usually mean nobody in the chain is maintaining it. |
The Console-Paste Risk
A lot of these tools ship with an instruction to open the browser console and paste in a block of code. It is worth being clear-eyed about what that does.
Code run in the console executes on the page with the same access you have. It can read anything the page can read, act as you, and reach your logged-in session — and if you have other tabs open on the same browser profile, the picture gets broader still. That is not a claim about any specific script; it is what the console is.
Browsers now show a warning in the console specifically because of this — a large red “Do not paste anything here” message. It is there because pasted-console-code attacks are common enough to warrant a permanent fixture in the developer tools.
The practical point is simply that the risk in this category is not detection by DeltaMath. It is running unreviewed code with your own credentials. If you cannot read the code, you are trusting a stranger with your session, and “it was on GitHub” is not a review.
What Actually Survives
Given all that, what makes any tool in this space last?
- Reading the rendered page rather than internal class names. Working from what is visually on screen decays far more slowly than a selector pointed at a bundled class name.
- Driving the maths editor properly, including exiting fractions and entering radical mode, rather than writing a string at a field that does not exist.
- Somebody maintaining it. The front end will change. The only question is whether anyone is watching when it does.
- Controls over how it behaves, not just whether it answers — the point argued on the bot page.
Why Delta Genie Is Built Differently
Delta Genie exists because of the decay cycle described on this page. It is a maintained extension rather than a script snapshot: it reads the rendered problem instead of pinning itself to internal class names, drives the maths input the way the editor expects, and gets updated when DeltaMath changes rather than quietly failing.
It also does not ask you to paste anything into a console. It installs as an ordinary browser extension, which means a defined permission scope you can inspect instead of an unbounded block of code running as you.
And it carries the accuracy and timing controls that free scripts almost universally lack — the settings that decide whether a completed assignment looks like your work. Delta Genie is pre-release; the waitlist is open.
Scripts & GitHub — FAQ
Why do DeltaMath GitHub scripts stop working?
Because they target the internal structure of DeltaMath's front end — class names and element ids that are implementation details rather than a stable interface. When DeltaMath ships a front-end update those names change, and the script silently finds nothing.
Is a DeltaMath bookmarklet safer than an extension?
Not inherently. A bookmarklet runs the same kind of code with the same page access; it is just stored in a bookmark instead of installed. It is more limited in what it can do, which reduces capability rather than risk.
What is the risk of pasting a script into the browser console?
Console code runs with your access to the page, including your logged-in session. That is why browsers now display a permanent warning in the console. The real risk in this category is running unreviewed code as yourself, not being detected by DeltaMath.
How can I tell if a DeltaMath script still works?
Check the last commit date and read the newest open issues on the repository. Unanswered threads saying it stopped working are the clearest signal. Heavy obfuscation in a small hobby project, or requests to a server other than DeltaMath, are reasons to walk away.
Why do scripts fill in the answer but DeltaMath doesn't accept it?
Because DeltaMath uses a maths editor rather than plain text fields. The script updated what you see without updating the editor's internal model, so the page never registered that an answer was entered. Fractions and radicals fail this way most often.
Is Delta Genie a GitHub script?
No. It is a maintained browser extension that reads the rendered problem rather than internal class names, drives the maths input properly, and gets updated when DeltaMath changes. It is currently pre-release — the waitlist is open.