STRUX

STRUX is the AI layer over a project's drawings, specifications and records. It answers questions with the source attached, runs your checklists across the whole document set, and keeps standing agents watching for what is slipping.

Everything in STRUX is scoped to the project you have open. There is no cross-project ask, and no way to point an instrument at a document outside the current project.

The instruments

Open STRUX from the left rail. Hovering the STRUX row shows the instruments; clicking it lands you on Field Q&A, which is the STRUX home.

Instrument	What it does
Field Q&A	Ask about the drawings, the specs or a register. Answers cite the documents they came from.
Workflows	Your checklists, run across the project. Results land in Findings.
Agents	Standing agents that read the project on a schedule and draft what needs chasing.
Submittal Review	Reads the required submittals out of the specs, then checks each received one against them.
Revision	Compares two issued sets and locates what changed, sheet by sheet.
Commissioning	Equipment turnover tracking and TAB report verification against the design.

What STRUX will not do

These behaviors are the reason to trust an answer, so they are worth stating up front rather than leaving to a footnote.

• It does not invent values. If a number is not in the documents it read, STRUX says the number is not there.
• It separates "the documents say no" from "I could not read the documents." When a data source is unreachable, STRUX reports that as a gap in its own retrieval and does not tell you a value is missing from the drawings. See Field Q&A.
• Agents draft, they never send. Every agent run produces drafts that a person approves or dismisses. See Agents.
• An empty result says which kind of empty it is. Submittal Review, for instance, distinguishes "no specifications have been uploaded" from "the specifications were read and require nothing", because those are different problems with different fixes.

Your plan has to include STRUX

STRUX is paid. It is not in the CORE free tier. The whole STRUX tree runs on Struxen AI. If your organization's plan does not include it, every instrument is replaced by a locked panel reading STRUX is not in your current plan, with a View plans button. Nothing under STRUX is partially available: it is on or it is off.

Two things additionally require the VANTAGE add-on on the specific project, because they run on the VANTAGE engine:

• Running a workflow.
• Investigate mode in Field Q&A.

Without it, those actions fail with a message saying VANTAGE is not enabled on this project and that an account admin can add it in Project Settings for $250/mo. Asking a normal question does not need the add-on. See VANTAGE.

Credits

Every STRUX operation that calls a model spends credits from the project's pool. Reading, browsing and filtering do not.

• Each project carries a monthly allowance that resets when the subscription renews, and a separate balance of purchased credits from top-ups, which do not expire. Runs draw the allowance first.
• Consumption is measured on the tokens the model actually processed, not as a flat price per action. A short question costs less than a long document comparison.
• You are not shown a credit estimate before you confirm. Actions that spend credits say so in words, not in numbers.
• A zero balance is a hard stop for AI and for document indexing. Everything else in the product keeps working, so the project stays readable while you top up.

Balances and usage live in Settings, under Credits & usage. See Billing.

Documents have to be indexed first

STRUX answers from documents that finished processing. A document showing Processing, Not processed, or Extraction failed is not in the index and will not appear in an answer, even though you can open and download it. See Document processing.

Base-plan accounts get no AI indexing at all: uploads store and download normally and stay at Not processed.

Demo projects

The shared demo project is read only. You can ask questions on it, subject to a daily limit, but scans, runs, uploads and agent creation are disabled. Create your own project to use the instruments for real.