Development

Development

Development

Custom API integration

Custom API integration

Connect your site to the tools you already use

Stable, secure integrations

Cleaner data flow in and out

5.0 / 5.0

Rating on Google

Projects icon

100+

Projects completed

On demand

No contract tie-ins

Expert team

Of digital pros

We connect your website to the tools that already run your business, using clean, reliable APIs. Your data flows more consistently between Webflow, Framer or WordPress and the systems your team lives in every day.

Category

Book a call to discuss your project

15-30 minute strategy call, no charge

Image of Zac Santer

Book a call with Zac

Turn your website into a connected hub

Many websites still behave like islands. Forms arrive as emails. Leads are pasted into CRMs by hand. Bookings are checked against calendars manually. Over time this creates delays, errors and a constant worry that something has slipped through the cracks. Custom API integration changes that. We design and build the connections that let your website talk directly to the tools that matter, so information moves automatically and consistently instead of being shuffled around by people.

We begin with a simple question. After someone fills in a form, books a call or completes a step on your site, what should happen next and where should that data live? That might be a lead entering your CRM with the right tags, a booking landing in your scheduling system, an application triggering an internal review or a payment syncing into a finance tool. We map each journey clearly so there is no ambiguity about what should happen at each step. The aim is not automation for its own sake. It is fewer manual tasks, fewer gaps and fewer surprises.

Designing integrations that fit how you work

Every business has its own stack and its own way of working. A good integration respects that rather than forcing everything into a one size fits all pattern. Once we understand your flows, we decide how best to connect them. Sometimes a direct API call from Webflow, Framer or WordPress is the right answer. Sometimes it is safer and clearer to use a small intermediary service or to formalize what you already do in an existing automation platform.

Before any code is written we document triggers, payloads and responses in plain language. What exactly kicks the integration off. Which fields are required. How we should treat duplicates. What should happen when a provider is slow or temporarily unavailable. This avoids the common situation where only one developer understands the integration and everyone else feels nervous about changing anything. It also means that when your processes evolve there is a clear map that shows what needs to be updated.

Cleaner, more reliable data between systems

Most frustration with integrations comes from messy data rather than the API itself. Field names are inconsistent. Values arrive in formats nobody expected. Records are created without the information a team needs to act. As part of this service we help you align how data is captured on the website with how it is stored in your downstream systems.

We decide which system should be the source of truth for each type of information and how fields should map. We add light validation at the point of entry so obviously broken data is caught early. That might mean enforcing required fields before a form can submit, standardizing country or product names, or splitting one long text block into structured parts that your CRM or internal tool can report on. The aim is simple. When somebody opens a record in your chosen system, it should contain the information they expect and nothing that confuses them.

Security and reliability as a foundation

Any custom integration touches sensitive territory by default, so we treat security and reliability as a baseline rather than an optional extra. Secrets and API keys are handled through appropriate secure storage. Permissions are scoped to the minimum needed so if anything were compromised the impact is limited. Wherever possible we keep credentials out of templates and public code and rely on configuration instead.

We also plan for failure. Third party services go down. Rate limits are hit. Inputs are not always what anyone anticipated. We add clear error handling and logging so that issues do not sit hidden for months. Requests are retried when it makes sense but not in a way that overwhelms an external service or creates duplicate records. The goal is an integration you can comfortably rely on in daily operations rather than a fragile script that everyone is afraid to touch.

Testing against real journeys, not just perfect ones

Many integrations are only tested on the happy path one clean form submission and one simple response. Real life is rarely that tidy. We run through realistic journeys using staging or test environments wherever possible. Optional fields, unusual values and error cases are all exercised so we can see how the integration behaves when things are less than ideal.

For Webflow, Framer and WordPress sites we test from the moment a user clicks submit through to the record arriving in your downstream tool. We confirm that records are created where you expect them, that they contain the right fields and that any user feedback on the site still feels smooth. If a step feels fragile or confusing we refine the integration or the front end pattern until the whole flow holds up.

Documentation your team can actually use

An integration only becomes a stable part of your operations when more than one person understands it. To support that we create straightforward documentation at the end of each project. It explains what was built in clear language. Which pages, forms or actions trigger which flows. What data is sent where. What typical error messages look like and who should be notified if something fails.

We pair this with short Loom walkthroughs where it helps. That makes it easier for new teammates or internal developers to get up to speed without a long handover call. If you have your own technical team we signpost exactly where they can extend or adjust behavior safely in future so you are not locked into one way of working.

Built for teams who want less manual work and more confidence

This service is for teams who want their website to behave like part of their system of record, not a disconnected brochure. If you are tired of copying and pasting from emails, chasing missing leads and wondering which tool holds the latest information, a custom API integration gives you a way out. You keep the tools that already work for your business and gain a cleaner, more predictable way for them to talk to each other.

See more

We connect your website to the tools that already run your business, using clean, reliable APIs. Your data flows more consistently between Webflow, Framer or WordPress and the systems your team lives in every day.

Category

Book a call to discuss your project

15-30 minute strategy call, no charge

Image of Zac Santer

Book a call with Zac

Turn your website into a connected hub

Many websites still behave like islands. Forms arrive as emails. Leads are pasted into CRMs by hand. Bookings are checked against calendars manually. Over time this creates delays, errors and a constant worry that something has slipped through the cracks. Custom API integration changes that. We design and build the connections that let your website talk directly to the tools that matter, so information moves automatically and consistently instead of being shuffled around by people.

We begin with a simple question. After someone fills in a form, books a call or completes a step on your site, what should happen next and where should that data live? That might be a lead entering your CRM with the right tags, a booking landing in your scheduling system, an application triggering an internal review or a payment syncing into a finance tool. We map each journey clearly so there is no ambiguity about what should happen at each step. The aim is not automation for its own sake. It is fewer manual tasks, fewer gaps and fewer surprises.

Designing integrations that fit how you work

Every business has its own stack and its own way of working. A good integration respects that rather than forcing everything into a one size fits all pattern. Once we understand your flows, we decide how best to connect them. Sometimes a direct API call from Webflow, Framer or WordPress is the right answer. Sometimes it is safer and clearer to use a small intermediary service or to formalize what you already do in an existing automation platform.

Before any code is written we document triggers, payloads and responses in plain language. What exactly kicks the integration off. Which fields are required. How we should treat duplicates. What should happen when a provider is slow or temporarily unavailable. This avoids the common situation where only one developer understands the integration and everyone else feels nervous about changing anything. It also means that when your processes evolve there is a clear map that shows what needs to be updated.

Cleaner, more reliable data between systems

Most frustration with integrations comes from messy data rather than the API itself. Field names are inconsistent. Values arrive in formats nobody expected. Records are created without the information a team needs to act. As part of this service we help you align how data is captured on the website with how it is stored in your downstream systems.

We decide which system should be the source of truth for each type of information and how fields should map. We add light validation at the point of entry so obviously broken data is caught early. That might mean enforcing required fields before a form can submit, standardizing country or product names, or splitting one long text block into structured parts that your CRM or internal tool can report on. The aim is simple. When somebody opens a record in your chosen system, it should contain the information they expect and nothing that confuses them.

Security and reliability as a foundation

Any custom integration touches sensitive territory by default, so we treat security and reliability as a baseline rather than an optional extra. Secrets and API keys are handled through appropriate secure storage. Permissions are scoped to the minimum needed so if anything were compromised the impact is limited. Wherever possible we keep credentials out of templates and public code and rely on configuration instead.

We also plan for failure. Third party services go down. Rate limits are hit. Inputs are not always what anyone anticipated. We add clear error handling and logging so that issues do not sit hidden for months. Requests are retried when it makes sense but not in a way that overwhelms an external service or creates duplicate records. The goal is an integration you can comfortably rely on in daily operations rather than a fragile script that everyone is afraid to touch.

Testing against real journeys, not just perfect ones

Many integrations are only tested on the happy path one clean form submission and one simple response. Real life is rarely that tidy. We run through realistic journeys using staging or test environments wherever possible. Optional fields, unusual values and error cases are all exercised so we can see how the integration behaves when things are less than ideal.

For Webflow, Framer and WordPress sites we test from the moment a user clicks submit through to the record arriving in your downstream tool. We confirm that records are created where you expect them, that they contain the right fields and that any user feedback on the site still feels smooth. If a step feels fragile or confusing we refine the integration or the front end pattern until the whole flow holds up.

Documentation your team can actually use

An integration only becomes a stable part of your operations when more than one person understands it. To support that we create straightforward documentation at the end of each project. It explains what was built in clear language. Which pages, forms or actions trigger which flows. What data is sent where. What typical error messages look like and who should be notified if something fails.

We pair this with short Loom walkthroughs where it helps. That makes it easier for new teammates or internal developers to get up to speed without a long handover call. If you have your own technical team we signpost exactly where they can extend or adjust behavior safely in future so you are not locked into one way of working.

Built for teams who want less manual work and more confidence

This service is for teams who want their website to behave like part of their system of record, not a disconnected brochure. If you are tired of copying and pasting from emails, chasing missing leads and wondering which tool holds the latest information, a custom API integration gives you a way out. You keep the tools that already work for your business and gain a cleaner, more predictable way for them to talk to each other.

See more

We connect your website to the tools that already run your business, using clean, reliable APIs. Your data flows more consistently between Webflow, Framer or WordPress and the systems your team lives in every day.

Category

Book a call to discuss your project

15-30 minute strategy call, no charge

Image of Zac Santer

Book a call with Zac

Turn your website into a connected hub

Many websites still behave like islands. Forms arrive as emails. Leads are pasted into CRMs by hand. Bookings are checked against calendars manually. Over time this creates delays, errors and a constant worry that something has slipped through the cracks. Custom API integration changes that. We design and build the connections that let your website talk directly to the tools that matter, so information moves automatically and consistently instead of being shuffled around by people.

We begin with a simple question. After someone fills in a form, books a call or completes a step on your site, what should happen next and where should that data live? That might be a lead entering your CRM with the right tags, a booking landing in your scheduling system, an application triggering an internal review or a payment syncing into a finance tool. We map each journey clearly so there is no ambiguity about what should happen at each step. The aim is not automation for its own sake. It is fewer manual tasks, fewer gaps and fewer surprises.

Designing integrations that fit how you work

Every business has its own stack and its own way of working. A good integration respects that rather than forcing everything into a one size fits all pattern. Once we understand your flows, we decide how best to connect them. Sometimes a direct API call from Webflow, Framer or WordPress is the right answer. Sometimes it is safer and clearer to use a small intermediary service or to formalize what you already do in an existing automation platform.

Before any code is written we document triggers, payloads and responses in plain language. What exactly kicks the integration off. Which fields are required. How we should treat duplicates. What should happen when a provider is slow or temporarily unavailable. This avoids the common situation where only one developer understands the integration and everyone else feels nervous about changing anything. It also means that when your processes evolve there is a clear map that shows what needs to be updated.

Cleaner, more reliable data between systems

Most frustration with integrations comes from messy data rather than the API itself. Field names are inconsistent. Values arrive in formats nobody expected. Records are created without the information a team needs to act. As part of this service we help you align how data is captured on the website with how it is stored in your downstream systems.

We decide which system should be the source of truth for each type of information and how fields should map. We add light validation at the point of entry so obviously broken data is caught early. That might mean enforcing required fields before a form can submit, standardizing country or product names, or splitting one long text block into structured parts that your CRM or internal tool can report on. The aim is simple. When somebody opens a record in your chosen system, it should contain the information they expect and nothing that confuses them.

Security and reliability as a foundation

Any custom integration touches sensitive territory by default, so we treat security and reliability as a baseline rather than an optional extra. Secrets and API keys are handled through appropriate secure storage. Permissions are scoped to the minimum needed so if anything were compromised the impact is limited. Wherever possible we keep credentials out of templates and public code and rely on configuration instead.

We also plan for failure. Third party services go down. Rate limits are hit. Inputs are not always what anyone anticipated. We add clear error handling and logging so that issues do not sit hidden for months. Requests are retried when it makes sense but not in a way that overwhelms an external service or creates duplicate records. The goal is an integration you can comfortably rely on in daily operations rather than a fragile script that everyone is afraid to touch.

Testing against real journeys, not just perfect ones

Many integrations are only tested on the happy path one clean form submission and one simple response. Real life is rarely that tidy. We run through realistic journeys using staging or test environments wherever possible. Optional fields, unusual values and error cases are all exercised so we can see how the integration behaves when things are less than ideal.

For Webflow, Framer and WordPress sites we test from the moment a user clicks submit through to the record arriving in your downstream tool. We confirm that records are created where you expect them, that they contain the right fields and that any user feedback on the site still feels smooth. If a step feels fragile or confusing we refine the integration or the front end pattern until the whole flow holds up.

Documentation your team can actually use

An integration only becomes a stable part of your operations when more than one person understands it. To support that we create straightforward documentation at the end of each project. It explains what was built in clear language. Which pages, forms or actions trigger which flows. What data is sent where. What typical error messages look like and who should be notified if something fails.

We pair this with short Loom walkthroughs where it helps. That makes it easier for new teammates or internal developers to get up to speed without a long handover call. If you have your own technical team we signpost exactly where they can extend or adjust behavior safely in future so you are not locked into one way of working.

Built for teams who want less manual work and more confidence

This service is for teams who want their website to behave like part of their system of record, not a disconnected brochure. If you are tired of copying and pasting from emails, chasing missing leads and wondering which tool holds the latest information, a custom API integration gives you a way out. You keep the tools that already work for your business and gain a cleaner, more predictable way for them to talk to each other.

See more

Custom API integration

Custom API integration

From

£1,200

GBP

From

£1,200

GBP

From

$1,450

USD

From

$1,450

USD

2-4 weeks

2-4 weeks

Connects to CRMs, platforms and internal systems

Connects to CRMs, platforms and internal systems

Get started

Integration discovery and data mapping

Integration discovery and data mapping

Secure API design and configuration

Secure API design and configuration

End to end testing plus simple documentation

End to end testing plus simple documentation

adpros.com

graphic image showcasing client work

Design

Development

Full website build

$10,000

Google drive icon

Strategy doc

Figma icon

Design file

Notes:

Simple landing page build based upon existing brand assets

Image of Emmanuel

Emmanuel

07 Nov

Grow your website on demand with us

From initial brand discovery to hi-fidelity designs, South Digital partners with ambitious teams to create thoughtful product and website designs.

adpros.com

graphic image showcasing client work

Design

Development

Full website build

$10,000

Google drive icon

Strategy doc

Figma icon

Design file

Notes:

Simple landing page build based upon existing brand assets

Image of Emmanuel

Emmanuel

07 Nov

Grow your website on demand with us

From initial brand discovery to hi-fidelity designs, South Digital partners with ambitious teams to create thoughtful product and website designs.

adpros.com

graphic image showcasing client work

Design

Development

Full website build

$10,000

Google drive icon

Strategy doc

Figma icon

Design file

Notes:

Simple landing page build based upon existing brand assets

Image of Emmanuel

Emmanuel

07 Nov

Grow your website on demand with us

From initial brand discovery to hi-fidelity designs, South Digital partners with ambitious teams to create thoughtful product and website designs.

Custom API integration FAQS

Which platforms and APIs do you work with?

Do we need a developer on our side to work with you?

How do you keep integrations secure?

What happens if a third party API changes in the future?

Can you help clean up or replace existing automations?

Will the integration slow down our website?

Do you provide ongoing support for integrations?

Custom API integration FAQS

Which platforms and APIs do you work with?

Do we need a developer on our side to work with you?

How do you keep integrations secure?

What happens if a third party API changes in the future?

Can you help clean up or replace existing automations?

Will the integration slow down our website?

Do you provide ongoing support for integrations?

Custom API integration FAQS

Which platforms and APIs do you work with?

Do we need a developer on our side to work with you?

How do you keep integrations secure?

What happens if a third party API changes in the future?

Can you help clean up or replace existing automations?

Will the integration slow down our website?

Do you provide ongoing support for integrations?

Let's make it happen

Strategic by design

Every website decision is backed by research & data.

Built for performance

Fast, accessible, and optimised for conversions.

Enterprise reliability

Scalable builds, consistent delivery, and stability.

Ongoing partnership

We plug into your existing teams and workflows.

Let's make it happen

Strategic by design

Every website decision is backed by research & data.

Built for performance

Fast, accessible, and optimised for conversions.

Enterprise reliability

Scalable builds, consistent delivery, and stability.

Ongoing partnership

We plug into your existing teams and workflows.

Let's make it happen

Strategic by design

Every website decision is backed by research & data.

Built for performance

Fast, accessible, and optimised for conversions.

Enterprise reliability

Scalable builds, consistent delivery, and stability.

Ongoing partnership

We plug into your existing teams and workflows.

Leading your website to success

Leading your website to success

Leading your website to success

South Digital is a web design and development agency based in the UK, partnering with teams across the US, UK, and beyond.

© 2025 South Digital Ltd

Rated 5.0 / 5.0 from 31 Google Reviews - See reviews

South Digital is a web design and development agency based in the UK, partnering with teams across the US, UK, and beyond.

© 2025 South Digital Ltd

Rated 5.0 / 5.0 from 31 Google Reviews - See reviews

South Digital is a web design and development agency based in the UK, partnering with teams across the US, UK, and beyond.

© 2025 South Digital Ltd

Rated 5.0 / 5.0 from 31 Google Reviews - See reviews