Available now
Available now: Lua 5.1, Lua 5.3, and Luau; functions and closures; string patterns and formatting; text-based dynamic loading; Lua 5.3 labels; Luau generalized iteration, table sorting and moving, and binary buffers. Inspect values, printed output, observed strings, file operations, and selected Roblox client behavior. Luau Modded Client also accepts HTTP and file fixtures.
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Execution trace (.cob)
Download or share a .cob report with the language, environment, program result, and each observed operation with its source location.
How analysis credits are calculated
The estimate combines code and fixture size with your plan's analysis capacity. It appears before you start. Monthly allowances are Free 2,000; Creator 15,000; Studio 75,000; Max 250,000; Enterprise 500,000 credits. Syntax errors are refunded.
Language behavior and environments
- Lua 5.1 — Analyze functions, closures, numbers, strings, tables, loops, string patterns, table sorting, random helpers, and reader-based load.
- Lua 5.3 — Lua 5.3 adds 64-bit integer behavior, floor division, bitwise operators, scoped goto/labels, reader-based load, table.move, and the __pairs iteration hook.
- Luau — Analyze generalized table iteration, table.create/find/move/sort, binary buffer operations, random helpers, and selected bit32 functions.
- Roblox Client and Luau Modded Client model selected services, Instance hierarchies, Vector3 values, and basic offline GUI trees. Both include EncodingService Base64, hash, and Zstd operations plus CollectionService tag queries; Modded Client also adds gethui, client hooks, and supplied HTTP and file fixtures.
Official language references
Analysis capacity
Free analyzes up to 64,000 source bytes and 16,384 steps; Creator 500,000 bytes and 65,536 steps; Studio 1,000,000 bytes and 262,144 steps; Max 2,000,000 bytes and 1,048,576 steps; Enterprise 3,000,000 bytes and 2,097,152 steps. Reports include up to 4,096, 16,384, 32,768, or 65,536 trace rows by plan.