More power. More control. Introducing the Mollie MCP server.

More power. More control. Introducing the Mollie MCP server.

More power. More control. Introducing the Mollie MCP server.

Tired of AI hallucinations & brittle prompts? The Mollie MCP Server is a new open protocol that gives your business the tools to build reliable, predictable AI applications.

Tired of AI hallucinations & brittle prompts? The Mollie MCP Server is a new open protocol that gives your business the tools to build reliable, predictable AI applications.

29 Jul 2025

For developers building with LLMs, the magic is starting to wear off.

The ‘wow’ moment of getting a brilliant, unexpected answer in seconds has now been replaced by the engineering reality: How do you build a genuine, revenue-generating product on a foundation of unpredictability?

We see developers running into the same frustrations:

  • The hallucination bomb: An answer is 99% correct, but one invented ‘fact’ silently corrupts your database or misleads a customer.

  • The prompt-engineering puzzle: You spend days crafting the perfect prompt, only to have a single turn of phrase from a user break the entire chain.

  • The format surprise: You ask for clean JSON. You get a friendly paragraph with some JSON buried inside. Your error handling is now longer than your core logic.

The raw power of these models is not in question. But for any serious application – especially in fintech, where precision is currency – hope is not a strategy. The lack of control is a deal-breaker.

For developers building with LLMs, the magic is starting to wear off.

The ‘wow’ moment of getting a brilliant, unexpected answer in seconds has now been replaced by the engineering reality: How do you build a genuine, revenue-generating product on a foundation of unpredictability?

We see developers running into the same frustrations:

  • The hallucination bomb: An answer is 99% correct, but one invented ‘fact’ silently corrupts your database or misleads a customer.

  • The prompt-engineering puzzle: You spend days crafting the perfect prompt, only to have a single turn of phrase from a user break the entire chain.

  • The format surprise: You ask for clean JSON. You get a friendly paragraph with some JSON buried inside. Your error handling is now longer than your core logic.

The raw power of these models is not in question. But for any serious application – especially in fintech, where precision is currency – hope is not a strategy. The lack of control is a deal-breaker.

For developers building with LLMs, the magic is starting to wear off.

The ‘wow’ moment of getting a brilliant, unexpected answer in seconds has now been replaced by the engineering reality: How do you build a genuine, revenue-generating product on a foundation of unpredictability?

We see developers running into the same frustrations:

  • The hallucination bomb: An answer is 99% correct, but one invented ‘fact’ silently corrupts your database or misleads a customer.

  • The prompt-engineering puzzle: You spend days crafting the perfect prompt, only to have a single turn of phrase from a user break the entire chain.

  • The format surprise: You ask for clean JSON. You get a friendly paragraph with some JSON buried inside. Your error handling is now longer than your core logic.

The raw power of these models is not in question. But for any serious application – especially in fintech, where precision is currency – hope is not a strategy. The lack of control is a deal-breaker.

For developers building with LLMs, the magic is starting to wear off.

The ‘wow’ moment of getting a brilliant, unexpected answer in seconds has now been replaced by the engineering reality: How do you build a genuine, revenue-generating product on a foundation of unpredictability?

We see developers running into the same frustrations:

  • The hallucination bomb: An answer is 99% correct, but one invented ‘fact’ silently corrupts your database or misleads a customer.

  • The prompt-engineering puzzle: You spend days crafting the perfect prompt, only to have a single turn of phrase from a user break the entire chain.

  • The format surprise: You ask for clean JSON. You get a friendly paragraph with some JSON buried inside. Your error handling is now longer than your core logic.

The raw power of these models is not in question. But for any serious application – especially in fintech, where precision is currency – hope is not a strategy. The lack of control is a deal-breaker.

Reliability over roadmaps

Taking a powerful but chaotic system and making it simple, predictable, and intuitive is very familiar to us. It’s what we’ve been doing in fintech for the last 20 years.

When we saw developers struggling with the chaos of AI, we applied the same developer-first philosophy that has guided us for two decades. This led us to a simple principle: Reliability over roadmaps.

In a landscape obsessed with feature velocity and chasing hype, we’re doing things differently: solid, well-designed tools on an open protocol. We believe that’s more valuable than a hundred brittle features on a closed one. 

And we’re not building a long list of tools for today. We’re establishing the robust foundation you need to create whatever comes tomorrow.

Taking a powerful but chaotic system and making it simple, predictable, and intuitive is very familiar to us. It’s what we’ve been doing in fintech for the last 20 years.

When we saw developers struggling with the chaos of AI, we applied the same developer-first philosophy that has guided us for two decades. This led us to a simple principle: Reliability over roadmaps.

In a landscape obsessed with feature velocity and chasing hype, we’re doing things differently: solid, well-designed tools on an open protocol. We believe that’s more valuable than a hundred brittle features on a closed one. 

And we’re not building a long list of tools for today. We’re establishing the robust foundation you need to create whatever comes tomorrow.

Taking a powerful but chaotic system and making it simple, predictable, and intuitive is very familiar to us. It’s what we’ve been doing in fintech for the last 20 years.

When we saw developers struggling with the chaos of AI, we applied the same developer-first philosophy that has guided us for two decades. This led us to a simple principle: Reliability over roadmaps.

In a landscape obsessed with feature velocity and chasing hype, we’re doing things differently: solid, well-designed tools on an open protocol. We believe that’s more valuable than a hundred brittle features on a closed one. 

And we’re not building a long list of tools for today. We’re establishing the robust foundation you need to create whatever comes tomorrow.

Taking a powerful but chaotic system and making it simple, predictable, and intuitive is very familiar to us. It’s what we’ve been doing in fintech for the last 20 years.

When we saw developers struggling with the chaos of AI, we applied the same developer-first philosophy that has guided us for two decades. This led us to a simple principle: Reliability over roadmaps.

In a landscape obsessed with feature velocity and chasing hype, we’re doing things differently: solid, well-designed tools on an open protocol. We believe that’s more valuable than a hundred brittle features on a closed one. 

And we’re not building a long list of tools for today. We’re establishing the robust foundation you need to create whatever comes tomorrow.

An API for the AI

To control the chaos of AI, you need a contract. So we built one: the Mollie Model Context Protocol (MCP) server. 

At its core, the MCP server is a standard way for AI agents to directly access and use Mollie’s tools, much like an API works for traditional software. 

Instead of relying solely on interpreting free-text, the MCP provides a clear, machine-readable “briefing” that guides the model. This defines what data it can use, which tools it can call, and how it should structure its response, dramatically increasing reliability.

The name explains the concept:

  • Model: The AI “brain” you’re using (like GPT-4 or Claude).

  • Context: The complete universe of information the model needs, including your instructions, verifiable data, and the tools it can use.

  • Protocol: The strict, JSON-based rules that govern the interaction, making it predictable and reliable.

Let’s say you want to generate a sales summary. Rather than writing a complex prompt, your application builds a simple MCP object. Your client sends a clean JSON payload to the server, asking for a tool to be run.

The server then runs the tool and provides a response that the model can verify. It’s less like a conversation and more like a reliable transaction: explicit, auditable, and engineered for precision.

This is how you stop prompting and start engineering.

To control the chaos of AI, you need a contract. So we built one: the Mollie Model Context Protocol (MCP) server. 

At its core, the MCP server is a standard way for AI agents to directly access and use Mollie’s tools, much like an API works for traditional software. 

Instead of relying solely on interpreting free-text, the MCP provides a clear, machine-readable “briefing” that guides the model. This defines what data it can use, which tools it can call, and how it should structure its response, dramatically increasing reliability.

The name explains the concept:

  • Model: The AI “brain” you’re using (like GPT-4 or Claude).

  • Context: The complete universe of information the model needs, including your instructions, verifiable data, and the tools it can use.

  • Protocol: The strict, JSON-based rules that govern the interaction, making it predictable and reliable.

Let’s say you want to generate a sales summary. Rather than writing a complex prompt, your application builds a simple MCP object. Your client sends a clean JSON payload to the server, asking for a tool to be run.

The server then runs the tool and provides a response that the model can verify. It’s less like a conversation and more like a reliable transaction: explicit, auditable, and engineered for precision.

This is how you stop prompting and start engineering.

To control the chaos of AI, you need a contract. So we built one: the Mollie Model Context Protocol (MCP) server. 

At its core, the MCP server is a standard way for AI agents to directly access and use Mollie’s tools, much like an API works for traditional software. 

Instead of relying solely on interpreting free-text, the MCP provides a clear, machine-readable “briefing” that guides the model. This defines what data it can use, which tools it can call, and how it should structure its response, dramatically increasing reliability.

The name explains the concept:

  • Model: The AI “brain” you’re using (like GPT-4 or Claude).

  • Context: The complete universe of information the model needs, including your instructions, verifiable data, and the tools it can use.

  • Protocol: The strict, JSON-based rules that govern the interaction, making it predictable and reliable.

Let’s say you want to generate a sales summary. Rather than writing a complex prompt, your application builds a simple MCP object. Your client sends a clean JSON payload to the server, asking for a tool to be run.

The server then runs the tool and provides a response that the model can verify. It’s less like a conversation and more like a reliable transaction: explicit, auditable, and engineered for precision.

This is how you stop prompting and start engineering.

To control the chaos of AI, you need a contract. So we built one: the Mollie Model Context Protocol (MCP) server. 

At its core, the MCP server is a standard way for AI agents to directly access and use Mollie’s tools, much like an API works for traditional software. 

Instead of relying solely on interpreting free-text, the MCP provides a clear, machine-readable “briefing” that guides the model. This defines what data it can use, which tools it can call, and how it should structure its response, dramatically increasing reliability.

The name explains the concept:

  • Model: The AI “brain” you’re using (like GPT-4 or Claude).

  • Context: The complete universe of information the model needs, including your instructions, verifiable data, and the tools it can use.

  • Protocol: The strict, JSON-based rules that govern the interaction, making it predictable and reliable.

Let’s say you want to generate a sales summary. Rather than writing a complex prompt, your application builds a simple MCP object. Your client sends a clean JSON payload to the server, asking for a tool to be run.

The server then runs the tool and provides a response that the model can verify. It’s less like a conversation and more like a reliable transaction: explicit, auditable, and engineered for precision.

This is how you stop prompting and start engineering.

From manual work to intelligent automation

The real impact of the MCP server is how it upgrades your daily workflows. Here are a couple of near-term examples we’re building towards:

Future use case 1: Instant resolution of support tickets

  • The daily grind: A merchant gets a stream of emails: “Where’s my order?” “Did my refund go through?” Each one is a manual process: log into the shop backend, find the order, switch to the Mollie dashboard to check the payment, then switch back to email to type a reply – an hour of copy-pasting for just a few emails.

  • The intelligent workflow: With the MCP, you can orchestrate this from one place. Connect two MCP servers: Mollie for payment data and an email provider, such as Google Workspace. Now, you can select a batch of emails and give your AI assistant a single command: “Check the status of these orders and refunds, and draft a personalised reply for each.”

In the background, the MCP gets to work. For each email, the AI agent uses sandboxed tools, such as retrieve_order and check_refund_status, to gather the facts. It then uses the email tool to generate accurate drafts. The merchant just reviews and clicks “send.” An hour of work is done in a minute, with better accuracy.

Future use case 2: From data exports to proactive analytics

  • The daily grind: A merchant wants to find their most loyal customers. This means exporting transaction data from Mollie, importing it into a spreadsheet, and then filtering and pivoting to find what they need. It’s a slow and reactive process that relies on spreadsheet skills.

  • The intelligent workflow: Now, it’s a simple conversation. The merchant asks their AI assistant: “Show me all customers who have made more than three purchases in the last six months.” The MCP enables the agent to use the list_payments tool, group the data, and return a clean, actionable list.

They can ask a follow-up: “Now, from that list, flag anyone whose refund-to-purchase ratio is over 50%.” The AI agent performs the analysis in real-time. The MCP guarantees the data is structured, making these calculations reliable and auditable. What once took hours of data wrangling now delivers instant insights.

The real impact of the MCP server is how it upgrades your daily workflows. Here are a couple of near-term examples we’re building towards:

Future use case 1: Instant resolution of support tickets

  • The daily grind: A merchant gets a stream of emails: “Where’s my order?” “Did my refund go through?” Each one is a manual process: log into the shop backend, find the order, switch to the Mollie dashboard to check the payment, then switch back to email to type a reply – an hour of copy-pasting for just a few emails.

  • The intelligent workflow: With the MCP, you can orchestrate this from one place. Connect two MCP servers: Mollie for payment data and an email provider, such as Google Workspace. Now, you can select a batch of emails and give your AI assistant a single command: “Check the status of these orders and refunds, and draft a personalised reply for each.”

In the background, the MCP gets to work. For each email, the AI agent uses sandboxed tools, such as retrieve_order and check_refund_status, to gather the facts. It then uses the email tool to generate accurate drafts. The merchant just reviews and clicks “send.” An hour of work is done in a minute, with better accuracy.

Future use case 2: From data exports to proactive analytics

  • The daily grind: A merchant wants to find their most loyal customers. This means exporting transaction data from Mollie, importing it into a spreadsheet, and then filtering and pivoting to find what they need. It’s a slow and reactive process that relies on spreadsheet skills.

  • The intelligent workflow: Now, it’s a simple conversation. The merchant asks their AI assistant: “Show me all customers who have made more than three purchases in the last six months.” The MCP enables the agent to use the list_payments tool, group the data, and return a clean, actionable list.

They can ask a follow-up: “Now, from that list, flag anyone whose refund-to-purchase ratio is over 50%.” The AI agent performs the analysis in real-time. The MCP guarantees the data is structured, making these calculations reliable and auditable. What once took hours of data wrangling now delivers instant insights.

The real impact of the MCP server is how it upgrades your daily workflows. Here are a couple of near-term examples we’re building towards:

Future use case 1: Instant resolution of support tickets

  • The daily grind: A merchant gets a stream of emails: “Where’s my order?” “Did my refund go through?” Each one is a manual process: log into the shop backend, find the order, switch to the Mollie dashboard to check the payment, then switch back to email to type a reply – an hour of copy-pasting for just a few emails.

  • The intelligent workflow: With the MCP, you can orchestrate this from one place. Connect two MCP servers: Mollie for payment data and an email provider, such as Google Workspace. Now, you can select a batch of emails and give your AI assistant a single command: “Check the status of these orders and refunds, and draft a personalised reply for each.”

In the background, the MCP gets to work. For each email, the AI agent uses sandboxed tools, such as retrieve_order and check_refund_status, to gather the facts. It then uses the email tool to generate accurate drafts. The merchant just reviews and clicks “send.” An hour of work is done in a minute, with better accuracy.

Future use case 2: From data exports to proactive analytics

  • The daily grind: A merchant wants to find their most loyal customers. This means exporting transaction data from Mollie, importing it into a spreadsheet, and then filtering and pivoting to find what they need. It’s a slow and reactive process that relies on spreadsheet skills.

  • The intelligent workflow: Now, it’s a simple conversation. The merchant asks their AI assistant: “Show me all customers who have made more than three purchases in the last six months.” The MCP enables the agent to use the list_payments tool, group the data, and return a clean, actionable list.

They can ask a follow-up: “Now, from that list, flag anyone whose refund-to-purchase ratio is over 50%.” The AI agent performs the analysis in real-time. The MCP guarantees the data is structured, making these calculations reliable and auditable. What once took hours of data wrangling now delivers instant insights.

The real impact of the MCP server is how it upgrades your daily workflows. Here are a couple of near-term examples we’re building towards:

Future use case 1: Instant resolution of support tickets

  • The daily grind: A merchant gets a stream of emails: “Where’s my order?” “Did my refund go through?” Each one is a manual process: log into the shop backend, find the order, switch to the Mollie dashboard to check the payment, then switch back to email to type a reply – an hour of copy-pasting for just a few emails.

  • The intelligent workflow: With the MCP, you can orchestrate this from one place. Connect two MCP servers: Mollie for payment data and an email provider, such as Google Workspace. Now, you can select a batch of emails and give your AI assistant a single command: “Check the status of these orders and refunds, and draft a personalised reply for each.”

In the background, the MCP gets to work. For each email, the AI agent uses sandboxed tools, such as retrieve_order and check_refund_status, to gather the facts. It then uses the email tool to generate accurate drafts. The merchant just reviews and clicks “send.” An hour of work is done in a minute, with better accuracy.

Future use case 2: From data exports to proactive analytics

  • The daily grind: A merchant wants to find their most loyal customers. This means exporting transaction data from Mollie, importing it into a spreadsheet, and then filtering and pivoting to find what they need. It’s a slow and reactive process that relies on spreadsheet skills.

  • The intelligent workflow: Now, it’s a simple conversation. The merchant asks their AI assistant: “Show me all customers who have made more than three purchases in the last six months.” The MCP enables the agent to use the list_payments tool, group the data, and return a clean, actionable list.

They can ask a follow-up: “Now, from that list, flag anyone whose refund-to-purchase ratio is over 50%.” The AI agent performs the analysis in real-time. The MCP guarantees the data is structured, making these calculations reliable and auditable. What once took hours of data wrangling now delivers instant insights.

Our vision: The AI-native developer experience

A reliable way to automate workflows is powerful,  but our vision for the MCP is bigger. We’re building the foundation for a truly AI-native developer experience.

Imagine you’re integrating Mollie into a new product. You open an AI-aware code editor and, instead of switching to a browser to read our docs, you just type a comment:

// Set up a webhook to handle recurring payment failures

This is where the MCP’s “resources” component comes alive. Our entire library of developer documentation, including every guide and API reference, is provided to the AI as a verifiable knowledge base.

The AI doesn’t guess or search Stack Overflow for outdated examples. It consults the official Mollie resource, understands the exact requirements for webhook security, and generates the correct, production-ready code right in your editor. It might even suggest a best practice you hadn’t considered.

This is the future we’re building. A future where you spend less time searching for information and more time solving problems. Where the line between reading documentation and writing code disappears. 

A future where the platform is an active, intelligent partner in your development process.

A reliable way to automate workflows is powerful,  but our vision for the MCP is bigger. We’re building the foundation for a truly AI-native developer experience.

Imagine you’re integrating Mollie into a new product. You open an AI-aware code editor and, instead of switching to a browser to read our docs, you just type a comment:

// Set up a webhook to handle recurring payment failures

This is where the MCP’s “resources” component comes alive. Our entire library of developer documentation, including every guide and API reference, is provided to the AI as a verifiable knowledge base.

The AI doesn’t guess or search Stack Overflow for outdated examples. It consults the official Mollie resource, understands the exact requirements for webhook security, and generates the correct, production-ready code right in your editor. It might even suggest a best practice you hadn’t considered.

This is the future we’re building. A future where you spend less time searching for information and more time solving problems. Where the line between reading documentation and writing code disappears. 

A future where the platform is an active, intelligent partner in your development process.

A reliable way to automate workflows is powerful,  but our vision for the MCP is bigger. We’re building the foundation for a truly AI-native developer experience.

Imagine you’re integrating Mollie into a new product. You open an AI-aware code editor and, instead of switching to a browser to read our docs, you just type a comment:

// Set up a webhook to handle recurring payment failures

This is where the MCP’s “resources” component comes alive. Our entire library of developer documentation, including every guide and API reference, is provided to the AI as a verifiable knowledge base.

The AI doesn’t guess or search Stack Overflow for outdated examples. It consults the official Mollie resource, understands the exact requirements for webhook security, and generates the correct, production-ready code right in your editor. It might even suggest a best practice you hadn’t considered.

This is the future we’re building. A future where you spend less time searching for information and more time solving problems. Where the line between reading documentation and writing code disappears. 

A future where the platform is an active, intelligent partner in your development process.

A reliable way to automate workflows is powerful,  but our vision for the MCP is bigger. We’re building the foundation for a truly AI-native developer experience.

Imagine you’re integrating Mollie into a new product. You open an AI-aware code editor and, instead of switching to a browser to read our docs, you just type a comment:

// Set up a webhook to handle recurring payment failures

This is where the MCP’s “resources” component comes alive. Our entire library of developer documentation, including every guide and API reference, is provided to the AI as a verifiable knowledge base.

The AI doesn’t guess or search Stack Overflow for outdated examples. It consults the official Mollie resource, understands the exact requirements for webhook security, and generates the correct, production-ready code right in your editor. It might even suggest a best practice you hadn’t considered.

This is the future we’re building. A future where you spend less time searching for information and more time solving problems. Where the line between reading documentation and writing code disappears. 

A future where the platform is an active, intelligent partner in your development process.

Built for developers, by developers

We know that for a new platform to be truly useful, it needs to be accessible, well-documented, and built with your workflow in mind.

Your toolkit for day one

Getting started with the MCP is simple. It runs over HTTPS, so if your environment can make a web request – using Python, Node.js, or anything else – you can use the MCP. There are no proprietary libraries to install because we believe in open standards. 

Our MCP server is now live with clear documentation, including:

  • A quickstart guide: Get up and running in minutes and make your first successful call.

  • Use case recipes: Practical examples with full, ready-to-use prompts you can copy and run.

We know that for a new platform to be truly useful, it needs to be accessible, well-documented, and built with your workflow in mind.

Your toolkit for day one

Getting started with the MCP is simple. It runs over HTTPS, so if your environment can make a web request – using Python, Node.js, or anything else – you can use the MCP. There are no proprietary libraries to install because we believe in open standards. 

Our MCP server is now live with clear documentation, including:

  • A quickstart guide: Get up and running in minutes and make your first successful call.

  • Use case recipes: Practical examples with full, ready-to-use prompts you can copy and run.

We know that for a new platform to be truly useful, it needs to be accessible, well-documented, and built with your workflow in mind.

Your toolkit for day one

Getting started with the MCP is simple. It runs over HTTPS, so if your environment can make a web request – using Python, Node.js, or anything else – you can use the MCP. There are no proprietary libraries to install because we believe in open standards. 

Our MCP server is now live with clear documentation, including:

  • A quickstart guide: Get up and running in minutes and make your first successful call.

  • Use case recipes: Practical examples with full, ready-to-use prompts you can copy and run.

We know that for a new platform to be truly useful, it needs to be accessible, well-documented, and built with your workflow in mind.

Your toolkit for day one

Getting started with the MCP is simple. It runs over HTTPS, so if your environment can make a web request – using Python, Node.js, or anything else – you can use the MCP. There are no proprietary libraries to install because we believe in open standards. 

Our MCP server is now live with clear documentation, including:

  • A quickstart guide: Get up and running in minutes and make your first successful call.

  • Use case recipes: Practical examples with full, ready-to-use prompts you can copy and run.

It’s time to build

The MCP server is a living product, and your feedback as an early adopter will be crucial in shaping its evolution from a powerful tool into a truly intelligent development environment.

If you’re ready to move beyond the hype and start building serious, reliable AI applications, we invite you to help us shape what’s next.

The raw power of AI is here. Now, we’ve built a way to control it. 

Get started.

The MCP server is a living product, and your feedback as an early adopter will be crucial in shaping its evolution from a powerful tool into a truly intelligent development environment.

If you’re ready to move beyond the hype and start building serious, reliable AI applications, we invite you to help us shape what’s next.

The raw power of AI is here. Now, we’ve built a way to control it. 

Get started.

The MCP server is a living product, and your feedback as an early adopter will be crucial in shaping its evolution from a powerful tool into a truly intelligent development environment.

If you’re ready to move beyond the hype and start building serious, reliable AI applications, we invite you to help us shape what’s next.

The raw power of AI is here. Now, we’ve built a way to control it. 

Get started.

The MCP server is a living product, and your feedback as an early adopter will be crucial in shaping its evolution from a powerful tool into a truly intelligent development environment.

If you’re ready to move beyond the hype and start building serious, reliable AI applications, we invite you to help us shape what’s next.

The raw power of AI is here. Now, we’ve built a way to control it. 

Get started.

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Table of contents

Table of contents

Table of contents

Table of contents

MollieGrowthMore power. More control. Introducing the Mollie MCP server.
MollieGrowthMore power. More control. Introducing the Mollie MCP server.
MollieGrowthMore power. More control. Introducing the Mollie MCP server.