Custom MCP server development that connects AI to your data.
We build Model Context Protocol servers that connect your data feeds, databases, APIs and internal tools to Claude, ChatGPT and other MCP clients, securely and under your control.
MCP server development
AI models are only as useful as the data they can reach. The Model Context Protocol (MCP) is an open standard that lets AI applications like Claude, ChatGPT and other MCP clients call tools and read data through one consistent interface. A custom MCP server is the layer that decides what the model can see, what it can do and who is allowed to ask.
We built the MCP server for Asora, a wealth management platform: dozens of domain tools exposing portfolio, reporting and family-office data to AI models, with secure sandboxed processing of large financial datasets. For the technical background, read our article on building a custom MCP server for company data.
What a custom MCP server does for your company
Instead of copying spreadsheets into a chat window, your team asks questions and the model pulls live answers from the systems that hold the truth. An MCP server wraps your databases, internal APIs, data feeds and SaaS tools as well-described tools and resources that any compatible AI client can use.
Because MCP is a standard, you build the integration once. The same server works with Claude today and with other MCP clients tomorrow, without rewriting integrations for every AI vendor.
- Databases and data warehouses exposed as typed, queryable tools
- Internal REST and GraphQL APIs wrapped with business logic
- Real-time data feeds, reports and documents as resources
- Write actions such as creating tickets or updating records, only where you allow them
MCP server security: auth, scoping and audit logs
An MCP server gives an AI model access to your business. We treat it with the same care as any production API handling sensitive data, because that is what it is. Asora handles portfolio and family-office data, so security was never optional.
Large datasets are processed server side in a sandbox. The model receives aggregates, filtered rows and computed results instead of millions of raw records, which is faster, cheaper and safer.
- Authentication through OAuth or your identity provider, no shared keys
- Per-user scoping: the model sees only what the person asking may see
- Read-only tools by default; write tools separated, confirmed and rate limited
- Audit logs of every tool call, input and result
- Sandboxed processing of large datasets, so raw data never floods the model context
- EU hosting on our dedicated hardware in German data centers
Designing MCP tools that AI models use correctly
A working MCP server is not the same as a useful one. Models choose tools from their names, descriptions and schemas. Too many overlapping tools and the model guesses; too few and it cannot answer. We design tool sets around real questions from your team, with clear schemas, helpful errors and predictable output.
We test every server against real AI clients with evaluation prompts, then refine the tools based on how the model actually uses them. MCP is often part of a broader custom AI solution with agents and self-hosted models, and it can be added to an existing web application.
How we
work.
- // 01
Free roadmap in 24 hours
Tell us which systems and questions matter. You get a cost breakdown, a timeline projection and a proposed tool set with security boundaries.
- // 02
Data and permission mapping
We map data sources, user roles and what each role may read or change. Read and write tools are decided explicitly.
- // 03
Build and evaluate
Tools are built in milestones and tested every week against real AI clients with your actual questions.
- // 04
Secure deployment
The server goes live on our own EU hardware or your infrastructure, with authentication, audit logs and monitoring switched on.
- // 05
Extend and maintain
We add tools as new questions come in and keep the server current as the MCP specification and clients evolve.
Proof, not
promises.
Asora
Most of the frontend, the Ionic and Angular mobile app, and the custom MCP server and agentic AI architecture for a wealth management platform.
Asora case studyUniters
Transforming freelancing into a Service Delivery Model: an animated company website and an enterprise contractor management system with a built-in AI agent.
Uniters case studyQuestions
answered.
AWhat is an MCP server, in plain terms?
BWhich AI clients work with a custom MCP server?
CHow do you keep company data secure?
DHow much does custom MCP server development cost?
EHow long does it take to build an MCP server?
FWho owns the MCP server?
Also
on the table.
Ready to transform
your idea?
Get a precise development roadmap in 24 hours, completely free. Tell us what you are building and a senior engineer replies, not a sales rep.
Get a free project roadmap in 24hResponse within 24 hours on business days · patrik.kelemen@crowie.io