The Tool Is Not the Operator

The short version: sculptor

sculptor is an AI coding agent — a tool that helps you write code with AI. It is one of many coding agents available: Claude Code, Cursor, Copilot, Gemini, and sculptor among them. It does the coding agent layer well: it processes your instructions, generates code, manages context. But sculptor is the tool, not the operator. The tool does not measure the skill of the human driving it.

SigRank is a different thing entirely: an operator scoring system. It reads token telemetry from any AI tool an operator drives — including sculptor — computes the cascade efficiency (Υ Yield), and ranks them globally. sculptor is the car; SigRank is the lap time. You need the car to drive; you need the lap time to know if you are winning.

Feature comparison

Why the tool isn't the operator

sculptor is a coding agent — it executes instructions and generates code. The operator is the human who drives it: what context they provide, how they manage the cascade, how efficiently they compound cached context into output. Two operators can use the same sculptor agent and have wildly different efficiency. One reuses cached context efficiently and produces 30K output tokens; the other re-sends the same context every turn and produces 3K. Same tool, ten-fold difference in signal. The tool does not determine the skill.

SigRank's headline metric, Υ = cache_read × output / input², measures exactly that gap. It rewards the operator who compounds cached context into output and penalizes the one who burns fresh input without leverage. sculptor writes the code; SigRank tells you whether the operator behind it is compounding or burning.

Score your sculptor sessions

If you use sculptor as your coding agent, SigRank can score your operator efficiency and rank you globally:

npm install -g sigrank
sigrank enroll      # create your operator identity
sigrank submit      # reads logs, scores, signs, publishes

Prefer to inspect before you submit? Run sigrank me --dry-run to see your scored payload locally, or paste your token counts into the /score calculator to compute your Υ Yield, class tier, and compression ratio instantly, no account, no submission, just the numbers.

Frequently asked questions

Is SigRank a sculptor alternative?

They are not the same category. sculptor is an AI coding agent — a tool that helps you write code with AI. SigRank is an operator scoring system — it evaluates the human who drives any AI coding agent, including sculptor. sculptor is the tool; SigRank scores the operator who uses it. The tool is not the operator. You do not choose between them — you use sculptor to code, and SigRank to measure how efficiently you drove it.

Why is the tool not the operator?

A coding agent is a tool — it executes instructions, generates code, processes context. The operator is the human who drives it: what context they provide, how they manage the cascade, how efficiently they compound cached context into output. Two operators can use the same sculptor agent and have wildly different efficiency. One reuses cached context efficiently and produces 30K output tokens; the other re-sends the same context every turn and produces 3K. Same tool, ten-fold difference in signal. The tool does not determine the operator's skill.

Can SigRank score me if I use sculptor?

Yes. SigRank is platform-neutral — it scores operators across Claude Code, Cursor, GitHub Copilot, Gemini, and 15+ other platforms. If sculptor produces token telemetry that SigRank can read, your cascade efficiency will be scored. Run `sigrank submit` to publish your cascade score to the leaderboard. SigRank measures the operator, not the tool, so your score is comparable to operators using any other AI coding agent.

What does sculptor not measure that SigRank does?

sculptor is a coding agent — it does not measure operator efficiency at all. It is the tool being driven, not the instrument panel. SigRank derives the cascade architecture from the operator's token telemetry: Υ Yield (is signal compounding or burning?), compression ratio (output per input), SNR (signal density), Leverage (how much cached context amplifies your input), and Velocity (tokens per unit time). sculptor writes the code; SigRank tells you whether the operator behind it is compounding or burning.

Should I use sculptor or SigRank?

Both — they serve different purposes. Use sculptor as your AI coding agent to write code. Use SigRank to measure how efficiently you drive it and where you rank against other operators. The tool and the score are not competitors. sculptor is the car; SigRank is the lap time. You need the car to drive; you need the lap time to know if you are winning.