Product
Overview
The commercial operating system for construction. Capture a commercial event once, every downstream workflow stays connected.
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Contract models
Fixed, cost plus & open book
Claim a fixed sum, reimburse at actual cost, or bill fully open book. ClaimStack handles each, the right way.
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Solutions
Overview
Built for every side of the contract. One commercial record the whole project team can trust, head contract to supplier.
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For subcontractors
Free to collaborate
Invited to a project? Submit claims and variations in a format that holds up, free forever.
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Resources
Overview
Practical guides on claims, variations and contracts, plus how ClaimStack connects, who's behind it, and how we keep your commercial data safe.
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See it on your project
A 30-minute walkthrough on your numbers, where the margin usually leaks.
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Pricing
Product/ClaimStack Assistant

Capture it at the coal face.

Standing on site, turn a voice note into the next action. Flag a variation, raise an RFI or drop a forecast note and it drafts against the right project straight away, ready for you to review and submit or to hand to a team member. Then ask anything across the live commercial record. It drafts and reads; you approve.

Nothing waits until you are back at your desk.

You stay in the loop on all of it. The assistant drafts and reads, it never submits or changes a financial record on its own. Everything it prepares, a variation, an RFI, a forecast note, comes back to you to review, assign and approve, exactly like the rest of ClaimStack.

01 · At the coal face

Say it, and it is an action.

Standing on the job, flag a variation, raise an RFI or drop a forecast note by voice. It becomes a draft action against the right project straight away, before you are back at your desk, so the moment it happens is the moment it is captured.

0:12
Transcribing

“Flagging a variation on the facade package. The bracket detail at level 7 needs a redesign, structural have marked up the connection. Photos attached.”

Turned into a draft variation
TypeVariation
ReferenceVO-014
Package07-500 Facade & cladding
StatusPending assessment
Draft ready for Northbank Stage 2, you review & submitReview
02 · Nothing slips

Hand it off, do not drop it.

Every note lands as a tracked draft you can finish yourself or offload to a team member. So when you get sidetracked on site or have to head to another project, the variation, RFI or forecast note is already captured and assigned, not lost in your head or a notebook.

From the field
Captured on site
Nothing missed
Variation
Facade bracket redesign, level 7
VO-014You
Draft
RFI
Bracket connection detail, level 7
RFI-021Contracts admin
Assigned
Forecast
Crane hire for the cladding lift, +$30,000
07-500You
Draft
Drafted from voice · keep it, or hand it to your team
03 · Ask anything

Question the live record.

Ask across procurement, claims, variations, forecast and cost, and get answers from the connected record rather than a stale report. What you get back reflects the position right now, not a snapshot someone exported last week.

You

How much of the facade package is committed?

Assistant · from the live record

07-500 Facade & cladding has $2,940,000 committed of a $3,480,000 budget, 84% let. It is forecasting $30,000 over, with VO-014 pending assessment.

SourcesCost report07-500VariationVO-014
04 · Your data, your AI

Bring your own model.

An MCP layer lets approved AI assistants read live commercial context, and you can bring your own AI model. Your data stays yours, so the intelligence sits close to the record without the record leaving.

MCP · Model context
Connected assistants
Read-only
ClaimStack AssistantNative
Claude (Anthropic)Read
Bring your own modelMCP
Readable context
Cost reportVariationsClaimsContractsCorrespondence
Your data stays yours · read-only, never leaves the record

How the assistant works.

STEP 01
Speak on site

Standing at the coal face, flag a variation, raise an RFI or drop a forecast note hands-free.

STEP 02
It understands the record

It infers the project and reads the live commercial context.

STEP 03
It drafts the action

The note lands as a draft variation, RFI or forecast against the right project, straight away.

STEP 04
Keep it or hand it off

Finish it yourself or offload it to a team member; nothing is submitted on its own, and nothing gets missed.

STEP 05
Everything stays connected

Once you approve, what you captured flows through claims, variations, forecast and cost.

Grounded in real data

Only as good as the record underneath.

Most AI sits on loose documents and guesses. Here the commercial truth is already connected, so the assistant answers from the live record, not from something someone exported and forgot.

Live answersRead from the connected record, not a stale report.
Every figure citedAnswers trace back to the exact record they came from.
Read-onlyAssistants read the record; they never change it on their own.
Your modelBring your own AI; your data stays yours and never leaves.
Voice
Capture at the coal face
Draft
An action, ready to submit
Assign
Offload it to your team
0
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