Prove what was agreed.
Heimdell independently confirms every sale, subscription and Direct Debit by AI phone call, secure link, widget or API. What the customer agreed to is sealed in a tamper-evident certificate you can hand to anyone who asks.
- From 80p per verification
- No subscription, credits never expire
- UK registered and ICO registered
Verification call
Recording
Heimdell agent: Hello, this is an automated verification assistant calling on behalf of Northline Broadband about your Fibre 500 sign-up. Is that Sarah Patel?
Customer: Yes, that's me.
Heimdell agent: I have your address as 42 Kingsway, Preston. Is that right?
Customer: It's 24, not 42.
Address corrected and flagged for review
Heimdell agent: Thanks. Fibre 500 is £32.99 a month on an 18-month minimum term, and you can cancel within 14 days. Do you agree?
Customer: Yes, I agree.
Certificate emailed to customer
SHA-256 9f2c41e07ab3d65c18e4f0b2a97d3c5e61f8a04d2b7c9e13f5a6d8b0c2e4f791
Every dispute starts with “I wasn’t told that.”
Without independent evidence it’s your word against theirs, and the regulator, the bank and the ombudsman all side with the customer by default.
- “I didn’t agree to that price.”
- “Nobody said it renewed.”
- “I never set up that Direct Debit.”
- “The rep filled it in for me.”
- “We weren’t shown that policy.”
- “He wasn’t authorised to sign for us.”
AI third-party verification calls that follow the script every time
Not a press-1 menu, and not a tired agent on their 200th call. A natural conversation that walks the customer through eight fixed stages, reads your wording exactly and can’t skip a step.
- 01
Confirm who answered
The agent says it's an automated assistant, who it's calling for and why, then checks it is speaking to the named customer before anything else.
- 02
Confirm the sign-up happened
The customer confirms they actually agreed to something today, in their own words.
- 03
Check name, address and email
Personal details are read back. If anything is wrong, the customer can correct it on the call.
- 04
Confirm the product and price
Product, price and billing frequency are read out exactly as the seller entered them.
- 05
Explain the terms
Minimum term, cooling-off and cancellation rights are explained and the customer confirms they understand.
- 06
Answer policy questions
Your policies are read word for word. The agent answers only from your wording and never improvises.
- 07
Confirm the Direct Debit
Bank, sort code and account ending are confirmed, with the Direct Debit Guarantee, only when the sale has a mandate.
- 08
Record explicit agreement
The customer gives a clear yes. The certificate is sealed and the customer is emailed a summary.
Every call ends with a clear outcome
Calls that don’t complete aren’t just “failed”. They go to the right follow-up queue with the reason and the full transcript, so your team knows exactly what to do next.
How AI phone verification works- Verified
- Objection raised
- Terms not understood
- Sign-up not confirmed
- Bank details mismatch
- Agreement refused
- Asked not to be contacted
- Wrong number
Verify by phone, link, widget or API, with automatic fallback
Use whichever channel suits the sale. If the customer doesn’t respond, Heimdell moves to the next one on its own.
- Secure link
- Sent by SMS or email. The customer reviews and confirms each term on a page you don't have to build.
- AI phone call
- A natural conversation that reads the agreement back and records the customer's spoken confirmation.
- Embedded widget
- Drop a script into your CRM or checkout. Signed, single-use tokens keep each session locked to one deal.
- API
- One request from your system creates the verification. You deliver the link however you like.
What happens when nobody responds
- 1
Primary channel
A secure link goes out by SMS and email the moment the sale is submitted.
- 2
No response after your chosen delay
Between 2 and 20 minutes, set per template.
- 3
First fallback
A fresh link is sent, or the sale is flagged for a call or follow-up.
- 4
Second fallback
One more attempt, then it lands in your follow-up queue.
Evidence for the whole agreement, not just day one
Most disputes happen months later, at renewal or after a price rise. Heimdell records each of those moments too, which is exactly what the January 2027 subscription rules ask you to evidence.
Verified sign-up
The original agreement, sealed with a certificate.
Covered by the 2027 rules
Cooling-off
The 14-day right shown and acknowledged.
Covered by the 2027 rules
Trial ending
A notice before an introductory offer turns into a paid plan.
Covered by the 2027 rules
Price or contract change
The customer re-confirms the new terms and gets a second certificate.
Renewal
A reminder before it renews, and a record that it did.
Covered by the 2027 rules
Cancellation
Initiated and confirmed, with its own evidence trail.
Covered by the 2027 rules
One certificate that settles the argument
Every completed verification produces a certificate sealed with a SHA-256 hash. Change a single character afterwards and the hash no longer matches, including if we try.
The exact version they saw. Templates lock when published, so the certificate shows precisely the wording that customer was given.
Every step, timestamped. An append-only timeline of each acknowledgement, correction and authorisation.
Download as PDF. Hand it to a complaints team, a bank or a regulator in one click.
Key terms can’t be watered down. Price, frequency, minimum term, renewal and cancellation always use system wording.
Verified agreement certificate
Example certificate
- Customer
- Sarah Patel
- Agreement
- Fibre 500, £32.99 per month
- Minimum term
- 18 months
- Cooling-off
- 14 days, acknowledged
- Direct Debit
- Account ending 4417, Guarantee shown
- Channel
- AI phone call, recorded
- Template
- Broadband TPV, version 3
- Verified
- 4 Oct 2026, 15:42 BST
Consent timeline
- 15:38 Identity confirmed
- 15:39 Address corrected by customer
- 15:40 Terms and cooling-off acknowledged
- 15:41 Direct Debit authorised
- 15:42 Explicit agreement given
Proof hash 9f2c41e07ab3d65c18e4f0b2a97d3c5e61f8a04d2b7c9e13f5a6d8b0c2e4f791
Built for the way sales teams actually work
Managers see the whole company. Sellers see only their own deals. Compliance can look without touching.
In the field and in the office
Three installable apps
Company, Client and Seller apps for phone, tablet and desktop.
QR codes for doorstep sales
The customer scans and confirms on their own phone, not the rep’s.
Analytics
Completion rate, time to complete and where customers drop off, by channel and template.
Follow-up queues
Abandoned verifications, review flags and failed calls in one list.
Audit log
Who did what in your account, and when.
Ask Heimdell
Describe your product in plain English and it drafts the template. You approve before anything is saved.
Plugged into your systems
REST API
Create verifications, record renewals and price changes, and fetch certificates.
Signed webhooks
Fourteen event types, HMAC-SHA256 signed, retried automatically.
Embeddable widget
Verification inside your CRM or checkout with signed, single-use tokens.
Test mode
Build your integration without creating real verifications.
CRM guides
HubSpot, Salesforce, Zoho, Close, Pipedrive, GoHighLevel, Zapier, Make and n8n.
Your dialler
Vicidial, Five9, Connex One or anything that can call a URL.
How Heimdell compares
The usual options each solve part of the problem. Heimdell was built to cover all of it.
| Feature | Heimdell | Call-centre TPV | IVR TPV | E-signature |
|---|---|---|---|---|
| Verification method | AI conversation, link, widget or API | Human agent | Press-1 menu | Signature on a document |
| Reads your terms word for word | Yes | Depends on the agent | Yes | No |
| Captures corrections during the call | Yes, flagged for review | Manually | No | No |
| Automatic fallback if no response | Yes | No | No | Reminder emails |
| Evidence for renewals and price changes | Yes, per event | No | No | New document each time |
| Tamper-evident certificate | SHA-256 sealed | Call recording | Call recording | Audit trail |
| UK consumer rules built in | DMCC, CCR 2013, DD Guarantee | Varies | Usually US-focused | No |
| Pricing | From 80p per verification | Hourly or per call, on quote | On quote | Per document or per seat |
Who uses Heimdell
Any business that sells something and might one day need to prove it, consumer or business.
Telecoms and broadband resellers
Independent TPV for door-to-door and telesales that supports Ofcom sales-conduct rules and protects commission against mis-selling claims.
Energy brokers and suppliers
Independent confirmation of contract terms before a switch goes through.
Subscriptions and memberships
Gyms, apps, boxes and clubs getting ready for the January 2027 subscription rules.
Direct Debit collectors
Mandate details and the Direct Debit Guarantee confirmed by the payer, not the rep.
B2B services and SaaS
Proof that an authorised representative accepted the commercial terms.
Hire and home services
Equipment hire, maintenance plans, solar and home improvement agreements.
Pay only for what you send
No subscription and no minimum spend. Phone verification is from 80p. A link verification uses 1 credit and an AI phone call uses 5 credits. Credits never expire.
£20
100 credits
20 phone calls or 100 link checks
£90
500 credits
100 phone calls or 500 link checks
£320
2,000 credits
400 phone calls or 2,000 link checks
Questions people ask first
What is Heimdell Tech Ai?
Heimdell Tech Ai is a UK platform that independently confirms what a customer or business agreed to, by AI phone call, secure link, embedded widget or API, and seals the result in a tamper-evident certificate. It is run by Heimdell Tech Ai Ltd.
How does AI third-party verification (TPV) work?
After a sale, Heimdell calls the customer and walks through eight fixed stages: identity, sign-up, personal details, product and price, terms, policies, Direct Debit and explicit agreement. It reads your wording exactly, captures any corrections, records the call and issues a SHA-256 sealed certificate.
How much does it cost?
There is no subscription. Credit packs start at £20 for 100 credits. A link verification uses 1 credit and an AI phone call uses 5 credits, from 80p per call. Credits never expire.
Does Heimdell help with the DMCC subscription rules?
Yes. The subscription contracts regime under the Digital Markets, Competition and Consumers Act 2024 starts in January 2027. Heimdell evidences the key pre-contract information, cooling-off rights, trial-ending and renewal notices, and cancellations, each with its own record. It is evidence infrastructure, not legal advice.
What happens if the customer doesn't respond?
Each template can set up to two fallback channels. If the customer hasn't responded after a delay you choose (2 to 20 minutes), Heimdell resends a fresh link or flags the sale for follow-up in your dashboard.
Can a salesperson complete the verification for the customer?
No. Verification happens on the customer's own phone or device, independently of the seller. Sellers can only see the deals they submitted, and completion can only be recorded by the customer's own confirmation.
Does it work with my CRM?
Yes. Heimdell has a REST API, signed webhooks and an embeddable widget, plus step-by-step guides for HubSpot, Salesforce, Zoho, Close, Pipedrive and GoHighLevel, and recipes for Zapier, Make and n8n.
Is my customers' data secure?
Bank account numbers are AES-256-GCM encrypted and only the last four digits are ever shown. Card numbers and CVVs are never collected. API keys and links are stored as hashes, and every company's data is isolated from every other's.
Stop arguing about what was said.
Sign up in a couple of minutes. A real person reviews every application before it goes live, and you only pay for the verifications you send.