Services · Ecommerce development · AI chat agent subscription sites

Subscription sites for London AI agent companies selling to startups and enterprises alike.

Codeeo designs and builds subscription websites for London AI chat agent companies: pricing that converts a product led sign up, billing that copes with prepaid credits and enterprise commitments, and an account area that procurement teams in the City and Canary Wharf will accept. London vendors often sell to a five person start up and a bank in the same quarter, and the platform has to serve both without two separate systems.

We focus on the site and billing layer that earns revenue, not on the agent model. Codeeo has no London office; our team works with London clients remotely, and every workshop, design review and release sign off takes place over video call with the people doing the work.

Built for
London AI chat agent start ups, scale ups and established software firms adding agent products to an existing subscription.
Typical timeline
Set in discovery against your funding milestones and sales commitments, then fixed in a written scope before any design work starts.
What you own
Source code, billing provider and payment accounts, pricing configuration, customer and invoice records, and analytics, registered to your company.
Rated
4.7 / 5 from 23 Google reviews

200+ companies servedFrom a first store to an ADX listed developer

Modon
Majid Al Futtaim
HP
Belkin
Dulsco Group
OneClickDrive
Hanayen
HMS
Clocksprings
Ghezlan

What we build

Billing and buying tools shaped for how London agent vendors sell.

London has an unusual concentration of conversational AI businesses. Research labs and model companies cluster around King's Cross, product start ups fill Shoreditch and Old Street, and many of their best customers sit a few Tube stops away in financial services, law and media. That mix produces two very different buyers: a team lead who wants to pay by card today, and a procurement department that wants an order form, a security pack and sixty day terms.

The capabilities here are chosen for that split. They let one platform run product led sales and contract sales together, keep pricing consistent across currencies, and give investors the revenue figures they ask for in a funding round.

Explain your project
  • Prepaid credits and drawdown

    Many agent vendors sell blocks of conversations or tokens that customers draw down over a term. We build credit purchase, balance tracking, expiry rules and automatic top ups, with low balance warnings sent before the agent stops answering. Credits bought by card and credits granted under an enterprise contract sit in the same ledger.

    Customers always know what is left and what happens next.

  • Multi currency price books

    London teams rarely sell only in sterling. Price books in GBP, EUR and USD are set deliberately rather than converted on the fly, so a Berlin or New York buyer sees a rounded figure. Payouts, refunds and reporting are reconciled back to your sterling accounts, with exchange differences visible to finance.

    Clean prices abroad and clean books at home.

  • Quote to invoice for enterprise deals

    Sales builds a quote from approved plans and discount limits, the buyer signs an order form electronically, and the signed terms create the subscription automatically with the right start date, commitment and billing schedule. No one retypes a contract into the billing system once the deal closes.

    Signed deals become correct invoices without manual entry.

  • Procurement and security pack

    Banks, insurers and law firms around the City ask how conversation data is handled, which model providers see it, and how your service supports their own outsourcing and operational resilience obligations. A gated document area shares your DPA, sub processor list, penetration test summary and policies with approved prospects, logging who downloaded what.

    Security reviews move faster and leave an audit trail.

  • Single sign on in the account area

    Enterprise customers expect staff to reach billing and usage pages through their own identity provider. We add SAML or OIDC sign on and user provisioning for larger plans, with roles that separate billing administrators from people who only configure the agent.

    Enterprise IT approves access without exceptions.

  • Pricing experiments that stay lawful

    London start ups test packaging often. We build plan variants, introductory pricing and annual discount displays that can be trialled on segments of traffic, while keeping every mandatory charge in the headline figure as the Digital Markets, Competition and Consumers Act 2024 requires. Old cohorts stay on their original terms unless you decide otherwise.

    Faster pricing decisions without breaking promises to existing customers.

  • Investor grade revenue reporting

    Monthly recurring revenue, net revenue retention, expansion from usage, logo churn and failed payment recovery, calculated from billing data rather than a spreadsheet. Exports suit the revenue recognition your auditors apply to annual prepayments and committed spend, which matters when a London fund starts due diligence.

    Board and investor figures that reconcile to the ledger.

  • Partner and reseller billing

    Agencies and system integrators across London resell agents to their own clients. The platform can create partner accounts that manage several end customers, apply wholesale pricing, and either bill the partner centrally or bill each end client with the partner's margin tracked separately.

    A channel that scales without a separate spreadsheet for each partner.

  • Card checkout that clears SCA first time

    Hosted or embedded checkout with 3D Secure on the initial payment, saved credentials for merchant initiated renewals, wallets for quick sign ups and clear error messages when a bank declines. For a London start up living on self serve revenue, recovering a declined first payment matters as much as winning the click.

    More sign ups end with a paid account.

  • Accessible, fast marketing pages

    The pages that bring buyers to the pricing table are built to WCAG 2.2 AA, load quickly on a commuter's phone signal and carry structured data for your product and plans. Comparison pages, integration directories and use case pages for sectors such as retail, property and hospitality give London prospects a reason to stay, and give search engines clear signals about what the agent does.

    More qualified visitors reach the plan that suits them.

Who this is for

Four London teams we usually hear from.

London AI chat agent SaaS website development work tends to start from one of a handful of situations. The common thread is growth that has run ahead of the commercial plumbing: a sales team closing deals the billing system cannot represent, or self serve traffic that drops off at checkout. Each situation below changes what goes into the first release and what can wait until the next funding round or hiring push. We are honest when a packaged tool would do the job, and we say so in discovery rather than after a build.

01

A seed funded team ready to charge

The agent has design partners using it free, and the next round depends on showing paying customers. We launch a lean marketing site, two or three plans, card checkout and usage visibility, all built so packaging can change after the first hundred paying accounts. Investors notice when billing works from the first invoice, and so do early customers comparing your product with three others they found that week.

A small, correct billing setup beats an ambitious, fragile one.

02

A scale up adding enterprise sales

Self serve is working, and now account executives are closing larger contracts with commitments, custom terms and invoiced payment. We add quoting, order forms, invoiced billing, SSO and the procurement pack while keeping the self serve path untouched, so marketing driven sign ups continue while sales chases bigger logos in the Square Mile and beyond.

03

An established software company launching an agent add on

You already bill customers for a core product and want to sell an AI agent alongside it. The challenge is entitlement logic: who gets the add on, how usage is counted, and how it appears on an existing invoice. We extend your current billing rather than replacing it, so long standing London customers see one bill and one account, not a second vendor relationship.

04

An agency packaging agents for its clients

Digital agencies across London build agents for retail, hospitality and property clients and want recurring revenue instead of one off fees. We create a branded subscription site with partner style account management, client level usage reporting and billing either to the agency or straight to each client, with terms that make the support responsibility clear.

Our process for an AI chat agent subscription platform in London.

  1. 01Revenue model mappingWe interview founders, sales and finance by video call to capture every way you charge today and plan to charge next year, including credits, commitments, partner margins and currency.
  2. 02System of record decisionWe settle which system owns customers, contracts, entitlements and invoices, so your CRM, billing engine and product never disagree about what a London customer has bought.
  3. 03Buyer path designSeparate paths for card sign up, sales assisted purchase and partner onboarding are designed and tested with real prospects before engineering starts.
  4. 04Integration buildUsage events, entitlements, CRM sync, e signature and accounting connections are built with logging and retries, then exercised with production shaped test data.
  5. 05Financial dry runYour finance lead reviews simulated invoices, credit drawdowns, currency conversions and revenue reports until every figure matches the expected result.
  6. 06Release and tuningWe launch behind feature flags, watch conversion and payment failure rates, and adjust pricing display or checkout steps based on what London buyers actually do.

Technology

What we build this with.

Usually Next.js for the marketing site and account area, Stripe Billing or Chargebee for subscriptions and credits, an e signature service for order forms, and connectors to HubSpot or Salesforce plus Xero or NetSuite. We pick tools your next finance hire will already know, host in regions you approve, and document every integration so your own engineers can maintain it.

01Web

  • React
  • Next.js
  • TypeScript
  • Node.js
  • Laravel
  • WordPress

02Commerce

  • Shopify Plus
  • WooCommerce
  • BigCommerce
  • Headless storefronts

03Data and cloud

  • PostgreSQL
  • MySQL
  • MongoDB
  • AWS
  • Azure
  • Docker

04Marketing and tracking

  • GA4
  • Google Tag Manager
  • Search Console
  • Meta Pixel
  • Looker Studio

Questions London agent companies ask us.

It depends on how many ways you charge, not on the number of pages.

A site with card checkout and a couple of seat or usage plans is a contained project. Credits, enterprise order forms, SSO, multi currency and partner billing each add design, build and testing effort. We agree the timeline in discovery, after mapping your revenue model, and tie the release plan to the dates that matter to you, such as a launch announcement or a funding round. Where a date is fixed, we cut scope to protect it rather than stretch quality, and we say early which items move to a second release.

Tell us what the business needs. We will tell you what to build first.

Schedule a free consultation and get a written recommendation, with costs, before you commit to anything.

Get in touch

PROVEN RESULTS

4.7 / 5from 23 Google reviews