What Is sUNC (and UNC)? Executor Scores Explained — Why 100% Isn’t “Safer”

Quick Answer (If You’re in a Hurry): sUNC meaning in Roblox is simple: it is a compatibility score for script executors, expressed as a percentage. It measures how much of the standard scripting environment an executor implements — and implements correctly. UNC is the older, looser version of the same idea. A score of 90 to 100% means nearly every public script runs; below 70% means real compatibility gaps. But neither number says a thing about ban risk. No executor guarantees 100% ban safety, so test on an alternate account. But honestly? Read the full breakdown.

I have tested executors on real devices since 2023. Every new tool’s marketing leads with the same number: 100% UNC, 100% sUNC. The number is real. The meaning is usually not what you think it is.

I get this question weekly: “Is 100% sUNC safe?” The honest answer takes longer than a yes or no. Here is the full breakdown — what the metric measures, where the numbers come from, why they drift every time Roblox patches, and why a perfect score is never a safety claim. No sponsored rankings, no affiliate bias. Just what the tests do.

1. What sUNC Means in Roblox, in One Paragraph

A sUNC score is a percentage measuring one thing: how complete and correct an executor’s scripting environment is. The test runs a script against the executor, calls the standard functions scripts rely on, and reports what share behave the way scripts expect.

High score, more scripts run without errors. It predicts compatibility — nothing about detection, malware, or update speed. Hold that sentence.

2. What UNC Was — and Why It Retired

In a Roblox executor, UNC stands for Unified Naming Convention: a community standard for what functions an executor should provide and what each one should be called. Script-Ware, the team behind it, published it as a documented standard on April 25, 2022.

Before UNC, every executor named its functions differently — a script that worked on one tool broke on another. Script authors carried long compatibility-shim blocks at the top of old scripts. UNC gave every tool the same function names.

Then the scene collapsed. Roblox partnered with Synapse Softworks in October 2023 and rolled out Hyperion, its anti-tamper system. Script-Ware shut down. The UNC project was archived on May 4, 2024.

So the “UNC” number quoted today is a snapshot of a retired standard — still referenced, no longer maintained. The is Roblox scripting dead page covers the full collapse.

3. What sUNC Is, and Why It Matters More

sUNC started as a successor built on top of UNC. Today it is its own standard with its own function list, maintained by the community after UNC was archived.

The difference is strictness. Classic UNC mostly checked that a function existed and returned something; sUNC checks it behaves the way scripts expect. A hook has to actually redirect. Stubs fail.

So sUNC scores almost always run lower than UNC scores on the same tool — the test is working as intended. When executors disagree, trust the sUNC number.

4. sUNC vs UNC: What Each Test Actually Checks

Ask what each test can and cannot be faked into saying. The comparison below is adapted from CheatSupply’s explainer, verified against the UNC history on October 23, 2026.

Test	What it checks	How easy it is to fake	Use it for
UNC	Whether the standard functions exist and are named correctly	Easy — a stub passes	A rough floor, nothing more
sUNC	Whether those functions actually behave the way scripts expect	Hard — stubs fail	The number you compare tools on
The gap between them	How much padding is in the advertised function list	Not fakeable — it is derived from the other two	Spotting inflated marketing claims

Read the gap line twice: a tool advertising 100% UNC next to 60% sUNC is telling on itself. The functions exist as names — they do not work.

5. What the Percentage Actually Measures

A UNC or sUNC test is itself a script. It walks the standard function list, calls every function, and reports the percentage the executor implements correctly. This Roblox executor compatibility score predicts one thing well: how many scripts run without throwing errors.

Blocky Roblox-style character pointing at a code editor window with a checklist of green check marks, illustrating how a sUNC compatibility test checks script functions

Treat the percentage as a band, not a precise ranking. The gap between 96% and 98% is noise; the gap between 95% and 65% is the difference between everything working and half your hub erroring out.

The bands: 90 to 100% is excellent — nearly every public script and hub runs. 70 to 90% is good. Below 70% means real compatibility gaps; below 50%, most modern hubs will not load at all.

One more thing the number measures honestly: nothing else. Not speed. Not stability. Not safety.

6. Where sUNC Numbers Come From (and Who Publishes Them)

The tests ship as an open-source community Lua test suite. Executor teams run them, independent testers run them, tracker sites publish the figures, Discord servers quote them in status channels.

There is no single official scoreboard: two trackers can show different numbers for the same tool on the same day. A number in a seller’s ad means less than a number printed next to a date.

I do not republish sUNC scores on this site for that reason. I cannot verify every figure against a live build, and a stale number is worse than none. What I can verify — version, key status, whether the build is serving — lives on the executor status page.

7. Why Scores Drift Every Time Roblox Patches

Roblox ships a new client roughly every week, and an executor built for last week’s client stops working until its team rebuilds it. That weekly cycle is the single biggest reason scores move.

Every rebuild can shift the score — functions get re-implemented, behavior changes under a new client. A 100% from two patches ago describes an executor you can no longer inject.

Think of the score as a snapshot, not a property: one build, one test version, one date. Strip any of the three and the number is decoration.

We are in the October 2026 patch window, and third-party status feeds were re-listing executors as updated through October 21–23, 2026. Reading this later? Assume every score you find is stale until a fresh date is printed next to it.

8. Here’s the Part Nobody Tells You: The Founders Never Meant This as a Quality Score

After the exploit scene shrank in late 2023, UNC compliance got marketed as a quality metric. The people who built UNC say they never intended that.

Their position is on the record: the standard was never meant as a benchmark for exploit reliability, feature completeness, or stability — only naming and basic behavior. So when a seller waves 100% at you as proof of quality, you are looking at the exact misuse the founders warned about. The number answers one question — “will this script’s function calls work here?” — and marketers stretched it into an answer for quality, stability, and safety.

sUNC is a better test, but it is still a compatibility test. It grades the environment, not the product.

9. Why 100% Is Not a Safety Score

No executor guarantees 100% ban safety — that line sits on every executor page here, and it applies here too. Compatibility, detection, and malware are three separate axes, and a compatibility score measures only the first.

Detection comes from injection itself, update lag, and what you visibly do in game. A perfect-score tool that has not updated since the last patch is a worse bet than a lower-scoring one updated this morning. The score never promised update speed.

Malware is separate again — a compatibility score says nothing about what the developer bundles in the installer. That is why our download pages carry VirusTotal results with hashes and dates, not compatibility numbers.

Update speed is its own spec. The score is a snapshot of an environment, not a promise about patch-day turnaround — and that turnaround decides whether you can play at all this week.

The rules that actually reduce risk: test on an alternate account — never your main. Use private or VIP servers. And do not set auto-farm speeds absurdly high; it makes you look like a bot.

10. How to Read a sUNC Score Without Getting Fooled

Seven checks. Takes two minutes. Saves the most common mistake in the scene: trusting a percentage that stopped being true days ago.

Blocky Roblox-style character examining a checklist board of green check marks through a magnifying glass, illustrating how to read a sUNC score without being fooled

Trust sUNC over UNC. The stricter test is harder to fake.
Read the live figure on a tracker, not the launch-day marketing copy.
Check the build date. A perfect score on an outdated build is worth nothing today.
Compare UNC and sUNC side by side. A wide gap means padding.
Cross-check the score’s date against the current Roblox patch.
Check live detection and update status separately. Scores never report detection.
Run the hub you actually care about. The practical test beats any spec sheet.

Do all seven and you will know more than the ad copy ever tells you. Skip step six and the other six do not matter.

11. Why You Won’t Find sUNC Numbers on This Site

Dated honesty block. October 23, 2026.

You will not find sUNC percentages on Bloxecutor’s executor pages or status hub. That is deliberate: I do not republish scores I cannot verify against a live build, and sUNC numbers age overnight in a weekly patch cycle.

Here is what I do verify: the executor status page carries the current confirmed version, the key-system status, and whether the build is actually serving — without Linkvertise redirects or ad mazes. That decides whether you can play tonight.

Want a sUNC number for a specific tool? Check the executor’s Discord status channel or a tracker that dates its figures — then run the seven checks above.

New to all of this? How to use scripts in Roblox is the beginner walkthrough. Delta vs Arceus X Neo shows what named, timed testing looks like. The executor status hub tracks which executors are working right now and what’s actually verified.

sUNC & UNC FAQs

sUNC is the community successor to UNC — the Unified Naming Convention. UNC was a naming standard for executor functions, documented by Script-Ware in April 2022 and archived in May 2024. sUNC is now its own standard with its own function list, and its test is stricter: it checks that functions behave correctly, not just that they exist.

sUNC. It verifies functions work the way scripts expect — not just that they exist under the right name — so it is much harder to inflate. Compare sUNC scores, and treat a large gap between a tool’s UNC and sUNC as a warning sign of a padded function list.

90 to 100% is excellent — practically every public script and major hub runs. 70 to 90% is still good, with occasional breakage on heavier hubs. Below 70% you will hit missing-function errors regularly, and below 50% most modern hubs will not load. Treat the bands as ranges — the difference between 96% and 98% is noise.

No. sUNC measures compatibility, not detection — a perfect-score executor can be detected this week. Ban risk comes from injection itself, update lag, and what you do in game. No executor guarantees 100% ban safety. Test on an alternate account; use private or VIP servers.

sUNC is the stricter test: UNC largely checks that functions exist, sUNC checks they behave the way scripts expect. Stubbed functions pass the first and fail the second — almost every executor scores lower on sUNC, and that is the test working as intended.

Roblox ships a new client roughly every week, and every executor rebuild can move the score. The number belongs to one build, one test version, one date. A figure without a date is decoration.

Executor Discords and third-party trackers publish them. We do not republish sUNC numbers here because we cannot verify them against live builds. Our executor status page carries what we can confirm: current version, key status, and whether the build is serving.

Related Guides

Executor Status — the confirmed versions and key status we verify ourselves
How to Use Scripts in Roblox — the beginner walkthrough
Delta vs Arceus X Neo — named, timed two-executor testing, not a single percentage
Is Roblox Scripting Dead? — Hyperion’s impact and the context behind UNC’s retirement
Roblox Executor Status — which executors are working right now, and what’s verified

Last checked: October 25, 2026. Definitions and bands re-checked against CheatSupply’s sUNC/UNC explainer (updated July 25, 2026) and the Numelon wiki’s UNC history (fetched October 23, 2026). No executor scores are published here by design.

Good luck out there.

Ethan Techman has been covering Roblox scripting tools since 2023. He tests every executor on real devices before publishing comparisons on Bloxecutor.com