XISLABS
ContactBook a discovery callBook a call

MCP server development

We build MCP servers that connect Claude and other MCP clients to your own systems, with the permissions decided before any code is written. Fixed-scope projects start at $1,500.

Book a discovery call
  • 4.9 out of 5 on Clutch
  • 74 systems shipped since 2018
  • 3 MCP projects shipped

What we build

  • Custom MCP servers.

    Tools and resources that expose your system to Claude in a form it can use.

  • Authentication.

    OAuth 2.0 through an approved developer app. Nobody shares a password.

  • Read-and-draft modes.

    Servers that can read data and prepare work but can never send or submit it.

  • Scheduled jobs behind the server.

    Scans, filters and alerts that run on a timer and hand results to Claude.

  • MCP presets inside plugins.

    Connections packaged with a Claude Code or Claude plugin so they install with it.

  • Operator dashboards.

    A web dashboard to watch what the server is doing.

MCP work we have shipped

  • PPC freelancer in Dubai: Upwork job search connected to Claude

    The client wanted his Upwork job search and proposal drafting automated without putting his account at risk. We built a system that signs in to Upwork over OAuth 2.0 through an approved developer app and is strictly read-and-draft. It never submits a proposal or messages a client. A scheduled scan filters new jobs by his criteria for Google Ads, PPC and media buying, budget and client spend history, then alerts him. His Claude drafts a proposal for each match through the MCP server, and he reviews and submits it himself. Built with NestJS, Next.js and Supabase.

  • AI tooling company: third-party services wired into Claude plugins

    A company building an accelerator product on Claude Cowork (now part of Claude) needed its plugins to reach outside services. We built the MCP server integrations and presets that connect those services through clean tool surfaces, and shipped them inside the plugins. Each one was tested in the Claude Code CLI and in the Claude desktop app.

More MCP work

What it costs

  • Fixed-scope MCP server

    Scope, timeline and a fixed price agreed in writing before work starts.

    From $1,500

  • Dedicated engineer

    A senior engineer who joins your team and works inside your tools. Billed monthly.

    $25 per engineer, per hour

  • Support after launch

    80 hours of support a month from the team that built it.

    $1,450 per month

The first call is free and takes 30 minutes.

How it runs

A free 30-minute call to agree what Claude may read and what it may change. Then a written proposal with a fixed price, and delivery in two-week sprints with a demo at the end of each.

Who does the work

Full-time engineers and designers in our own office. No freelancers and no subcontractors. The senior engineer from your first call writes the code and stays on the project until handover.

Questions about MCP servers

What is an MCP server?

A small service that lets an AI client such as Claude read from and act on one of your systems through the Model Context Protocol.

Which AI clients can use it?

Any client that supports MCP. We test with Claude Code and the Claude desktop app.

Can the server be read-only?

Yes. One server we built can read and draft but cannot submit anything, so a person makes every final action.

How do you handle sign-in?

Through OAuth 2.0 and the platform's own permission screen. We do not handle your passwords.

Who owns and hosts the server?

You own the code. We deploy it to your infrastructure and hand over the documentation.

How much does an MCP server cost?

Fixed-scope builds start at $1,500. The price depends on the system and on how much the server is allowed to do.

Tell us which system Claude should reach

Name the system and what you want Claude to do in it. We will tell you what the server needs.

Book a discovery call