For Commercial Managers · Contracts Managers · Heads of Commercial

Win the redline. Settle the variation.

You own the commercial-legal risk of every project. Variations, settlements, claims, supplier disputes — all landing at once. An elite cross-functional workforce hunts FIDIC clauses, retrieves bid precedent, quantifies cost impact. You focus on the deal.

A commercial manager's negotiation table: redlined FIDIC contract on the left, Vonbuild's claim quantum dashboard on the right

Left — the redlines you mark by hand · Right — the clauses Vonbuild matches against precedent

Today vs tomorrow

Reacting to claims today. Drafting them tomorrow.

Today

A 47-variation backlog. 5 contracts to redline. 3 disputes simmering.

Variation #34 lands. You spend two hours finding the original bid line. Three hours checking if the contract allows it. By Wednesday the deadline has passed and you've already moved to the next fire. Margin leaks 0.5% per uncaught issue. By month-end, 2-3% of project P&L has evaporated to administrative drag.
Friday at 5pm: the variation you didn't have time to challenge is now a settled cost.
With Vonbuild

Every variation challenged. Every redline ready Monday morning.

Vonbuild isn't a chatbot. It's a factory. When 47 variations need challenging, 47 workers spawn — each cross-referencing the contract, the bid precedent, the cost exposure. You arrive Monday to a stack of challenge-ready files. The margin you used to leak now stays on your P&L.
Friday at 5pm: every variation has been challenged on time, every redline has gone out. You go home.
The cross-functional superpower

You don't get a contract reviewer. You get the whole commercial team.

A variation isn't just a legal question. It's contract law + bid precedent + cost exposure. Vonbuild runs all three Masters on one matter.
01
Master Legal

Reads the contract. Finds the protection.

Variation Order #47 arrives from the GC. Master Legal pulls the contract (FIDIC Red Book, Sub-Clause 13.3), identifies your right to challenge, finds the asymmetric notification window, drafts your contractual position. Trigger: 9am Monday.
02
Master Sales

Pulls the original bid. Checks what was promised.

Legal calls Sales. Sales retrieves the original tender response, method statements, win-theme commitments. Cross-references the variation scope against what the GC originally committed to deliver. Elapsed: 8 minutes.
03
Master Procurement

Quantifies the cost. Defends the number.

Procurement cross-references already-ordered materials against the new scope. Quantifies what's recoverable vs unrecoverable. Drafts the cost recovery quantum with line-by-line evidence. Elapsed: 14 minutes total.
Result · 4 hours across 3 Masters
vs. 5 days of solo back-and-forth

A defensible commercial position. Built once. Across three departments.

Contract analysis (Legal) + bid precedent (Sales) + cost quantum (Procurement) — assembled into one challenge file. €340K saved on a contested variation. You spend the morning negotiating, not reconciling. Friday: settled, defended, on the right side of the deal.

Live process · Legal cascade

One command. Five legal agents. Contract analyzed.

A direct instruction to Master Legal spawns five specialized agents in parallel. Ninety seconds from command to a signed risk report. Two deadlines auto-tracked.

Signal

An event arrives at 14:32.

Any source can fire it: a file dropped in OneDrive / Google Drive / any drive, an email landing in Outlook, a scheduled task firing, or you pressing a button. In this scenario, an event arrives via YOU.

Source: YOU · FIDIC-Silver-Book-2017.pdf
Routing

MASTER LEGAL routes.

It classifies the impact across 21 semantic categories and dispatches to the 5 specialized agents concerned. No human in the loop. No meeting scheduled.

5 specialized agents dispatched · 312 ms
Parallel reaction

5 specialized agents. In parallel.

Each agent accesses its own toolset — apps, browsers, MCP connectors, project documents and company knowledge — and produces a structured output. Concurrently, not sequentially.

AGENT
Contract Reader
23 clauses
scope mapped
AGENT
Clause Analyzer
4 red flags
high-risk clauses
AGENT
Time-Bar Tracker
2 deadlines
14d, 28d remaining
AGENT
Letter Drafter
VC-024
reservation letter
AGENT
Audit Logger
Trace cr_2026
immutable
5 outputs produced
Convergence

Outputs return. One narrative.

The 5 specialized agents return their outputs to MASTER LEGAL. It reconciles them into a single decision card.

1 reconciled decision
Validation

Handed to you. One click.

MASTER LEGAL presents the consolidated decision to you. Full evidence chain, all sources linked. Three minutes after the signal landed. One approval. One trace ID. Action executed.

3 min · signal → decision
Self-scheduled trigger

T+14 DAYS. The system wakes itself up.

During the parallel phase, a agent scheduled a follow-up task on its own. T+14 DAYS — without you, without a meeting, without a reminder email — MASTER LEGAL wakes itself, dispatches the right agent, and executes autonomously. You delegated the mental load.

T+3minT+14 DAYS · auto-fired
Auto-fired · 0 human intervention
Admissible · Provable · Defensible

How to sleep at night.

You sign the settlement. You defend the redline. Four guarantees that hold up in front of the GC, the arbitrator, and your CFO.
Guarantee 1 · No made-up numbers

Zero hallucination on quanta.

If the agent uses your BOQ, the number is real. If it can't find the data, it reports back — never invents. Every cost line traceable to source document + hash.
Guarantee 2 · The evidence chain

Hashed. Logged. Dispute-ready.

Every commercial position ships with SHA-256 document hashes, per-action audit log, JSON export for arbitration prep. Drops straight into your firm's case management.
Guarantee 3 · Human in the loop

The AI drafts. You settle.

The agent never sends an external email or signs a settlement. It drafts the challenge file. You adjust tone, refine quantum, click Send. Your commercial judgement stands. Liability stays with you.
Guarantee 4 · Tenant-resident

Your commercial intel doesn't leak.

Tenant-resident execution inside your existing Microsoft 365 or Google Workspace. Pricing, win-themes, supplier negotiations — your competitive memory — never trains foundation models. DPA on request.
Live demo · Guarantee 3 in motion

This is what "you settle" looks like.

The variation challenge is drafted. The GC's address is pre-filled. The modal blocks. Your click sends it. The AI assembles the position; your commercial judgement stays at the table.
Works where you work

No new UI to roll out.

Vonbuild drives the tools your commercial team already lives in. SAP for the cost data. SharePoint for the contracts. Outlook for the negotiation thread.
Operates inside your stack
SAP / Oracle / SageSharePointOutlook (web)TeamsCoupa / AribaProcorePlus any software with MCP
No new UI
Your team opens the same project workspace. The agent has assembled the file.
Your stack stays yours
ERP credentials in your secret store. DMS permissions inherited. No data leaves the perimeter.
Your format on the way out
Settlement letters in your firm's template. Cost ledger in your ERP format. Nothing breaks downstream.
For your CFO conversation

How to justify Vonbuild to your board.

Don't tell your CFO you bought an AI tool. Tell them you bought a margin-protection engine. Three bullets, ready to repeat.
Bullet 1 · Margin protection
2–3%
of project P&L

"Every uncontested variation costs us 0.5% of margin."

Industry pattern: 2-3% of project P&L leaks to uncontested variations, settled disputes, and missed counter-claims. With the workforce model: every variation challenged on time, every dispute defended with full evidence chain.
Bullet 2 · Speed
5 days → 4h
per variation challenge

"We answer the GC before their notification window closes."

Industry typical: 3-5 days to assemble a commercial response. With workforce: 4 hours. Window closes Friday? You file Wednesday. The opposing party has to negotiate, not stall.
Bullet 3 · Coverage
47 → 100%
variations addressed

"We stopped picking which variations to fight."

Industry typical: commercial managers pick the top 5-10 variations to challenge because of time. The other 30+ slip through as concessions. With workforce: all 47 variations addressed on the deadline. Margin compound effect at quarter-end.
Numbers are industry benchmarks (Monograph 2025, AEC margin studies). Calibrated to your firm in the demo.

Start with the contract you've been postponing.

That 500-page FIDIC the developer just sent. The variation backlog you've been triaging. The dispute that's been simmering for three months. Drop it in. See the challenge file by lunch.
For the technical deep dive