Keystone AI
Keystone AI is a UK-based SaaS company founded in 2021 that provides an integrated AI-powered operating system (Keystone OS) combining a 60-second AI voice agent, CRM, unified inbox, review automation, and digital proposals for UK construction trade businesses under £5m turnover, sold via monthly subscriptions with area exclusivity.
- Company typePrivate
- Founded2021
- HeadquartersShrewsbury, United Kingdom
- Headcount1–10
- GTM typeB2B
- OfferingSoftware
What Keystone AI does
Keystone AI is a UK-based SaaS company founded in 2021 that provides an AI-powered operating system, branded "The Keystone OS," for UK construction trade businesses with annual turnover under £5m. The platform integrates six core modules: a 60-second AI voice agent that handles inbound calls and qualifies leads, a unified communications inbox spanning SMS, email, Facebook, Instagram, and web chat, digital proposals with e-signatures and Stripe-integrated payment collection, an automated Google review collection engine with private feedback routing for dissatisfied customers, a quote-to-payment CRM with construction-specific pipeline stages, and a social media scheduler producing 30 posts monthly from completed job photos. The platform is operated by Keystone AI App Ltd, registered in England and Wales with headquarters in Shrewsbury.
The company's go-to-market combines product-led growth tools (a postcode availability checker and a missed-job loss calculator) with high-touch demo booking. Its most distinctive structural feature is a one-trade-per-postcode-district exclusivity model: once a roofer, builder, or other trade is claimed in a district, no competitor in the same trade can access the system in that territory for as long as the subscriber remains active. This is supported by 38 trade-specific landing pages targeting distinct verticals such as roofers, electricians, plumbers, kitchen fitters, landscapers, and EV charger installers.
Revenue is generated through monthly recurring subscriptions (Starter, Response, Pro, and Keystone Growth System tiers), a one-time £195 non-refundable setup fee, and usage-based credits for AI minutes, SMS, and email. Additional revenue streams include Trade Leads (planning application intelligence) and Keystone Cover Insurance, an FCA-regulated partner product. The company holds SOC 2 Type II certification and operates in compliance with UK GDPR. No external funding rounds, M&A activity, or leadership disclosures are present in the available data.
Keystone AI firmographics
Firmographics- Name
- Keystone AI
- Legal name
- Keystone AI App Ltd
- Website
- https://keystoneai.uk
- Company type
- Private
- Founded year
- 2021
- Operating status
- Operating
- Headcount range
- 1–10 employees
- Short description
- Keystone AI is a UK-based SaaS company founded in 2021 that provides an integrated AI-powered operating system (Keystone OS) combining a 60-second AI voice agent, CRM, unified inbox, review automation, and digital proposals for UK construction trade businesses under £5m turnover, sold via monthly subscriptions with area exclusivity.
- Ownership category
- akta.pro rank
Keystone AI industry classification
Industry- Product category
- Construction Trade Automation Software
- NAICS
- Computer Systems Design and Related Services (5415), Software Publishers (51321)
- SIC
- Services-Computer Programming Services (7371)
- akta.pro primary industry
- Professional & Business Services Marketplaces (Freelancers, SMB Services) (BPAMAHAG)
Keywords
Where Keystone AI is headquartered
LocationHeadquarters
- HQ city
- Shrewsbury
- HQ country
- United Kingdom
- HQ region
- Europe
Offices1 record
Markets served
Keystone AI business model
Business model- GTM type
- B2B
- Offering type
- Software
- Cost components
- Technology or R&D, Personnel, Marketing or Sales, Operations, Infrastructure, Others
Revenue model
- Monthly SaaS Subscription: Rolling monthly subscription covering full Keystone OS platform access including AI call handling, CRM, unified inbox, website, review automation, and social media management. Packages include Starter, Response, Pro, and Keystone Growth System tiers. Monthly billing in advance via Direct Debit.
- Setup Fee: One-time upfront setup fee of £195 billed before service activation. Non-refundable per terms of service.
- Usage Credits (AI Minutes, SMS, Email): Monthly subscription includes £30 of usage credits for text messages, emails, and additional AI call minutes. Response packages include 200 AI minutes/month. Pro and Keystone Growth packages include 350 AI minutes/month. Overage usage beyond included allowances billed at cost with zero markup at end of billing cycle.
Pricing tiers
| Model | Billing | Price |
|---|---|---|
| Subscription | Monthly | Starter Package |
| Subscription | Monthly | Response Package |
| Subscription | Monthly | Pro Package |
| Subscription | Monthly | Keystone Growth System |
Go-to-market motion2 records
Distribution channels4 records
Marketing channels10 records
Keystone AI product offering
Product offeringCore offering
Keystone AI sells The Keystone OS, an integrated AI-powered SaaS platform for UK construction trade businesses that combines a 60-second AI voice agent for missed-call response, a unified multi-channel communications inbox, a construction-specific CRM, automated quote follow-ups, digital proposals with e-signatures and Stripe payments, a 5-star Google review engine, and an automated social media scheduler. The platform is sold on a monthly subscription basis (Starter, Response, Pro, and Keystone Growth System tiers) with a one-time £195 setup fee, and each subscription includes one-trade-per-postcode area exclusivity so competitors of the same trade in that district cannot access the same system.
Product overview
Keystone AI offers The Keystone OS, a unified AI-powered operating system for UK construction and trade businesses under £5m turnover. The platform is built around six interconnected components: AI-Powered Instant Response (60-second AI voice agent for call handling), Unified Inbox & Communications (multi-channel messaging hub), Digital Proposals & E-Signatures (quote generation with payment collection), Automated 5-Star Reputation Engine (Google review collection), Quote-to-Payment CRM (construction-specific pipeline management), and Social Media Scheduler (automated content publishing). Additional services include Website Development, Trade Leads (planning application intelligence), and Keystone Cover Insurance. All clients receive area exclusivity—one trade per postcode district—ensuring no competitor can access the same system in their territory. The platform operates on a subscription model starting at £249/month with no long-term contracts.
Differentiator
Problem solved
Functional benefit
Products and services
- The Keystone OS
Quantifiable outcome
- 40% business growth in 18 months (Shire Conservatories case study)
- +9 more outcomes
Companies that use Keystone AI
Customer profileNamed customers8 records
Segments6 records
Ideal customer profiles1 record
Keystone AI technology and API
TechnologyTechnology focussed Yes
API detail
- Has API
- No
- API docs
- API detail
Core technology
AI maturity
App detail
AI capability6 records
Feature10 records
Keystone AI partnerships and signals
Strategic signalScale indicators12 records
Recent moves6 records
Expansion highlights5 records
Keystone AI competitors and assessment
Company assessmentMarket position
Competitive moat4 records
Key risks6 records
Key highlights7 records
Customer concentration
Keystone AI social profiles
Digital presenceKeystone AI compliance and trust
Trust signalCompliance3 records
Keystone AI financial estimates
Financial estimateRevenue estimate
Valuation estimate
Keystone AI leadership team
Management profileNumber of profiles
Keystone AI funding detail
Funding detailFunding overview
Funding rounds
Investors
Funding detail is available on the Subscription and Enterprise plan.Contact sales →
Keystone AI M&A and investment
M&A and investmentM&A
Investments
M&A and investment is available on the Subscription and Enterprise plan.Contact sales →
Frequently asked questions about Keystone AI
What does Keystone AI do?
Keystone AI sells The Keystone OS, an integrated AI-powered SaaS platform for UK construction trade businesses that combines a 60-second AI voice agent for missed-call response, a unified multi-channel communications inbox, a construction-specific CRM, automated quote follow-ups, digital proposals with e-signatures and Stripe payments, a 5-star Google review engine, and an automated social media scheduler. The platform is sold on a monthly subscription basis (Starter, Response, Pro, and Keystone Growth System tiers) with a one-time £195 setup fee, and each subscription includes one-trade-per-postcode area exclusivity so competitors of the same trade in that district cannot access the same system.
Is Keystone AI a public or private company?
Keystone AI is a private company. It is classified as founder individual operated bootstrapped and is currently operating.
When was Keystone AI founded?
Keystone AI was founded in 2021. It employs 1 to 10 people.
Where is Keystone AI based?
Keystone AI is headquartered in Shrewsbury, United Kingdom, in the Europe region.
How does Keystone AI make money?
Three revenue lines are on record. Monthly SaaS Subscription is the primary driver. The others are setup Fee and usage Credits (AI Minutes, SMS, Email).
Does Keystone AI have an API?
No public API is recorded for Keystone AI.
What industry is Keystone AI in?
Keystone AI's product category is Construction Trade Automation Software. Its primary akta.pro industry code is BPAMAHAG, Professional & Business Services Marketplaces (Freelancers, SMB Services). Its NAICS code is 5415 and its SIC code is 7371.