Paste the agreed scope
Use only the relevant deliverables, limits, revision caps and exclusions—not the whole contract.
Scope checks for agencies
Catch unpriced client work before “yes.”
Paste the relevant scope and the client’s request. MarginRail shows what may be outside scope, estimates its billable value, drafts the response and records client approval before your team commits.
Rules-based check · no account · runs in your browser · you make the final decision
96risk
Likely outside scope
2 new deliverables + rush timing
Video production and landing pages are explicitly excluded from the signed retainer.
Potential unbilled value£1,680
Private client approval£1,680 · pending
Super simple
Capture. Compare. Decide. Get approval.
One request in; clear evidence, commercial options and a client-ready next step out. Your team stays in control.
Paste the client request
Use the client’s actual wording and add the likely delivery hours and normal billable rate.
Make the commercial choice
Review the evidence, value estimate and drafted reply. Then absorb, trade, defer or charge.
Get the paid change approved
Send a private link showing the extra work, fee and timing. Accepted value enters the commercial record automatically.
Focused on how you work
Built for the agency operator.
Put a fast commercial checkpoint between the client request and the delivery promise—without replacing the tools your team already uses.
Protect repeatable client work
- Fixed-fee projects and capped retainers
- Clear deliverables, limits and exclusions
- Account managers handling daily requests
- Fast decisions before work starts
- Calm, consistent client responses
See where margin is being protected
- Scope risk and request value in one place
- Charge, trade, defer or absorb explicitly
- Private approval links for paid changes
- Confirmed value tracked separately
- Unlimited teammates without per-seat pricing
Value estimate
Measure the work before you absorb it.
This estimates unbilled revenue at your normal client rate—not profit or guaranteed recovery. Use it to decide which accounts deserve a closer scope review.
Potential monthly unbilled revenue£3,520
Pricing
One agency plan. £99/month.
Use MarginRail when saving one unpriced request would cover the subscription. Test it on a real request before buying.
Agency
Catch scope risk before delivery starts.
£99/ month
- Private request-intake link and inbox
- AI checks against saved client scope
- Commercial decisions and confirmed value tracking
- Private client approval links for paid changes
- Passkey access for agency teammates
Cancel any time. The instant browser check and one AI report per work email every 24 hours are free.
Free AI scope-risk report
Test one request before buying.
Paste one relevant scope boundary and one real client request. The report returns a likely scope decision, quotes the supporting evidence, estimates the unbilled value and drafts a response.
- Evidence quoted from your text
- AI analysis with a rules-based fallback
- Private report link expires after seven days
Exactly what it does
AI finds the signal. You keep the decision.
What is the difference between the instant check and the free AI report?
The instant scope check is a fast, rules-based first pass that runs entirely in your browser; it does not call AI or ask for contact details. The free report sends your redacted text to Workers AI, verifies its evidence against your wording and creates a private seven-day report with a summary and separate findings.
Does MarginRail read Slack, Teams or email?
No. MarginRail does not connect to or read those systems. An account manager can paste a request through the private intake link or privately forward one individual email to the tokenised workspace address.
Is every flagged request automatically billable?
No. The tool surfaces a commercial decision with its reasoning. The agency still decides whether to absorb, defer, trade or charge for the request.
What does MarginRail cost?
An Agency workspace costs £99 per month. The instant browser check and one AI report per work email every 24 hours are free.
Can I assess fit without sharing a scope document?
Yes. The walkthrough request asks only about your agency, team size and where the commercial decision currently gets lost. It does not require a client document or payment details.