US founding cohort now openEarly access for general contractors, onboarding on your own bid packagesJoin
Lex · AI field reporting agent

AI daily reports and field reporting for construction.
Written from what the field sends.

Lex is the AI field reporting agent for superintendents and foremen. Crews send photos, voice notes and messages as they work, even without signal. Lex writes the daily report, logs manpower, weather and delays, records work in place, runs inspection checklists and keeps safety and incident records. Your superintendent reviews and signs.

Request early access See Lex at work
Lex · founding cohortOnboarding on one of your live jobs
9:41

Job 2417 · SiteAna, Luis, Jorge + Lex

Luis R.Level 2 framing with sheathing7:58 AM
Ana R.▶0:18
Lex added 5 items to today’s report
Daily report, Nov 4Drafted from 12 photos, sent 5:02 PMSent
  • Weather68°F, clear
  • Crew24 on site
  • WorkFraming L2 east, roof 60%
  • DeliveriesDrywall 540 of 600
  • SafetyToolbox talk, 22 signed
RFI-031 createdFrom the 10:14 AM voice note

Sample data · Lex drafts, your team approves

Lex at work · sample data

What does Lex do with
a day on site?

Four steps, from the first photo to the report your project manager reads at night. Scroll, and watch it happen.

LexJob 2417 · Daily reportsField thread
9:41
‹LRARJob 2417 · SiteAna, Luis, Jorge, Kevin + Lex
● Offline · 3 messages waiting✓ Back online · all sent
  1. Today
  2. Luis R. · framingEast wall sheathing on level 2East wall L2, sheathing on. Grid D/2
  3. Ana R. · superintendent▶0:18
  4. Jorge R. · receivingDrywall delivered at gate 2Drywall at Gate 2. Ticket says 540, PO was 600
  5. Thanks. Lex, add the short to today’s report
  6. Kevin M. · MEPInspector passed rough-in on L1 👍
  7. Lex added 5 items to today’s report
+Message
Daily reportsWed, Nov 4DraftSent 5:02 PMARMOSend report
☀️ 68°F, clear · wind 6 mphCrew 24 · 4 trades7:00 AM to 5:00 PM

Work completed

Framing on level 2 east is on schedule, sheathing on.7:58

Roof shingles 60% placed, bay 3 finished after lunch.1:32

Rough-in inspection on level 1 passed.3:05

Deliveries

Drywall: 540 of 600 sheets on DN-5531. Dario is following up.11:40

Open issues

Header at grid C/4 does not match A-301, detail 4. Framers holding the opening.10:14Create an RFI from this note?Create RFI

RFI-031Header size at grid C/4To the architect · due Nov 9Sent
Level 2 sheathingInterior framingRoofing crewDrywall delivery+8 photos
Daily report sentTo M. Ortiz and the owner’s rep · 12 photos · RFI-031

  1. 01 / 04Capture

    Crews send photos, voice notes and messages as they work, including through WhatsApp and without signal.

  2. 02 / 04Draft

    Lex writes the daily report: weather, crew, work completed, deliveries and safety.

  3. 03 / 04Link

    Questions become RFIs, and every item is linked to its sheet, submittal or change.

  4. 04 / 04Send

    Your superintendent checks the draft and sends it. Lex keeps the record with its photos.

Sample data. Lex prepares and checks, people on your team approve.

45 min*saved on every daily reportDrafted from what the field already sends.
5 hrs*a week back for each superintendentLess typing at the end of the day.
1*record of manpower, weather and delaysBuilt the day it happens, ready for a claim.
0*site photos lost in group chatsEach photo filed to the right job and date.
100%*of reports signed by a personLex drafts; your superintendent signs.
12*field reporting featuresFrom the first photo to the incident log.

*Illustrative

12 capabilities

What can Lex automate
in field reporting?

Everything Lex covers on the job, in one list. Each one is a first pass your team reviews and approves.

See all features by agent →
  1. 01Daily reports

    Daily reports drafted from what the field sends, on your own templates.

  2. 02Voice notes to reports

    Talk instead of typing: voice notes become structured report entries, in English or Spanish.

  3. 03Site photo archive

    Every site photo filed by job, date, level and grid line, and searchable later.

  4. 04Manpower and equipment log

    Who was on site, for which company, for how many hours, and which equipment ran.

  5. 05Work in place and percent complete

    Progress by activity from the field, so billing and the schedule start from the same numbers.

  6. 06Weather and delay log

    Weather pulled for the site every day, with lost time and delay days recorded as they happen.

  7. 07Inspections and QA checklists

    Pre-pour, framing, rough-in and closeout checklists, filled on site with photos.

  8. 08Safety logs and toolbox talks

    Safety observations, incidents and toolbox talk sign-ins recorded with the day.

  9. 09Incident and near-miss reports

    Report an incident or near miss from the phone in under a minute, with photos and witnesses.

  10. 10Safety and compliance documents

    Upload whole folders: certificates of insurance, OSHA cards, safety plans and training records are sorted and checked.

  11. 11Plans in the field, offline

    Current sheets on site without signal, with markups that sync when the crew is back in range.

  12. 12Site activity recap

    A short recap of what happened across your jobs each day.

Every line has a source

Where does a line in the
daily report come from?

Every line Lex drafts keeps the photo, note or message it came from. Open a line and the source plays right there, with who sent it, when and where on site.

LexDaily reports · Nov 4
Daily reportsWed, Nov 4Sent 5:02 PM12 photos · 3 notes · 4 messages

Work completed

Framing on level 2 east is on schedule.7:58

Roof deck 60% placed, bay 3 finished after lunch.1:32

Open issues

Header at grid C/4 does not match A-301, detail 4. Framers holding the opening.10:14

Deliveries

Drywall: 540 of 600 sheets on DN-5531.11:40

Source of this lineVoice note

ARAna Ruiz, superintendentWed, Nov 4 · 10:14 AM · 0:18
▶0:18

“Framers are holding that opening on the east side. The header at C/4 doesn’t match the detail on A-301, it calls for a double two by ten. Can we get the architect on it today?”

Level 2, grid C/4Sheet A-301, detail 4
RFI-031Header size at grid C/4Sent to the architect · answer due Nov 9Sent
The team

Who picks up
Lex’s work?

What Lex records moves on to the next agent with its source attached, so nobody types the same thing twice.

PatrickProject management

Gets field progress.

Work in place updates the three-week look-ahead and the critical path.

Meet Patrick →
FinaFinance and budget

Gets percent complete.

The same progress figure feeds the pay application and labor cost.

Meet Fina →
ColinCommunication hub

Gets the questions.

Questions from site become RFIs that Colin tracks to an answer.

Meet Colin →
Your superintendentsSite teams

Get the report.

A daily report ready to sign, with every line traced to a photo, note or message.

Read the field operations guide →
NewEarly access

Try Lex.
On one of your live jobs.

Lex is offered to the US founding cohort. We set Lex up with each team on one of their own jobs, with their own crews, templates and checklists.

  • Onboarding on your own job a working session on a project of yours
  • A direct line to the product team your feedback goes to the people building Lex
  • Founding-cohort terms pricing on request, agreed before general availability

Request access

Tell us about one job in the field. We reply personally and set up a session on your own site photos and notes.

Join the founding cohort

Prefer a call? Book 15 minutes, or write to tushar.adsul@bauai.co with your company, your role and the job you want to start with.

SOC 2 Type II in progress · US data residency · No training on your data

FAQ

Getting started

Who can use Lex today?

Lex is available to the US founding cohort. We keep the group small so each team gets hands-on setup and a direct line to the product team.

How does onboarding work?

We set a date and set Lex up with you on one live job: your crews, your report template and a week of site photos and notes.

What does Lex cost?

Lex is not part of the published plans yet. Founding-cohort terms are agreed with each team, and pricing is on request.

How it works

Can crews send updates by voice, in Spanish?

Yes. Voice notes in English or Spanish become structured report entries, and crews can keep using WhatsApp or text through Colin, BAU AI’s communication agent.

Does Lex send reports without review?

No. Lex drafts the daily report and the logs. Your superintendent reviews and signs before anything leaves the site team.

Does Lex work without signal on site?

Yes. Field capture, checklists and current drawings work offline, and reports sync when the device is back online.

Can Lex help with delay claims?

Lex records weather, lost time and the activity affected each day, with photos. That record supports a time extension request; the request itself is your team’s.

Is our project data used to train AI models?

No. Your documents stay yours: US data residency, tenant isolation, encryption at rest and in transit, and no training on customer data. Our SOC 2 Type II audit is in progress.