How do I use KfW Förderungsmittel MCP Server?

1. Click on "Install Server". 2. Wait a few minutes for the server to deploy. Once ready, it will show a "Started" state. 3. In the chat, type @ followed by the MCP server name and your instructions, e.g., "@KfW Förderungsmittel MCP Server Welche Programme gibt es für eine neue Wärmepumpe in meinem Eigenheim?" That's it! The server will respond to your query, and you can continue using it as needed. Here is a step-by-step guide with screenshots.

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KfW Förderungsmittel MCP Server

by tife89

Overview Schema Related Servers Score Discussions

TypeScript

Hybrid

KfW Funding MCP Server

An MCP (Model Context Protocol) server for querying KfW funding programs for energy-efficient renovations of residential buildings in Germany.

Part of the "Sanierungskompass" (Renovation Compass) platform - connecting homeowners with energy consultants and current KfW financing options.

What is KfW funding?

The Kreditanstalt für Wiederaufbau (KfW) offers low-interest loans and grants for:

Energy-efficient building renovation (BEG - Federal Funding for Efficient Buildings)
Heating replacement and renewable heat sources
Individual measures such as windows, insulation, and ventilation work
Complete renovations to KfW Efficiency House standards

Related MCP server: FluentLab Funding Assistant

Features

4 MCP Tools for KfW data queries
Current KfW program data (2025/2026)
Static fallback database with common programs
Interest rates and loan conditions with calculation
Repayment subsidy determination (grant-financed loan portion)
Type-safe implementation in TypeScript

Installation

NPM Package

npm install @sanierungskompass/kfw-mcp

From Source

git clone https://github.com/timfellendorf/kfw-mcp.git
cd kfw-mcp
npm install
npm run build

Usage

Start as an MCP Server

npm start
# oder für Entwicklung:
npm run dev

The server listens on Stdin/Stdout in the MCP protocol format.

Configure with Claude Desktop

Edit ~/Library/Application Support/Claude/claude_desktop_config.json (macOS) or the equivalent on Windows/Linux:

{
  "mcpServers": {
    "kfw-foerdermittel": {
      "command": "node",
      "args": ["/pfad/zu/kfw-mcp/dist/index.js"]
    }
  }
}

Then activate the server in Claude.

With Claude Code

# Server im Hintergrund starten
npm run dev &

# In Claude Code verwenden:
# - Claude erkennt verfügbare Tools automatisch
# - Tools können direkt in Prompts genutzt werden

Available Tools

1. `kfw_list_programs`

Lists all available KfW programs for residential building renovation.

Input: No parameters required

Output: Array of programs (ID, Name, Type, Category, Description)

Example:

Claude: "Zeige mir alle verfügbaren KfW-Programme"

Server antwortet mit:
[
  {
    "id": "358",
    "name": "KfW 358 - Ergänzungskredit für Einzelmaßnahmen",
    "type": "Kredit",
    "category": "BEG - Einzelmaßnahmen",
    "description": "Zinsgünstiger Kredit für einzelne energetische Maßnahmen an Wohngebäuden",
    "maxLoanAmount": 120000,
    "interestRate": {
      "current": 2.75,
      "unit": "% p.a. effektiv"
    }
  },
  ...
]

2. `kfw_get_program_details`

Retrieves detailed information about a specific KfW program.

Parameters:

program_number (string, required): KfW program number (e.g., "358", "261", "458", "459")

Output: Detailed program information

Example:

Claude: "Gib mir Details zum KfW 358 Programm"

Server antwortet mit:
{
  "id": "358",
  "name": "KfW 358 - Ergänzungskredit für Einzelmaßnahmen",
  "type": "Kredit",
  "description": "Zinsgünstiger Kredit für einzelne energetische Maßnahmen an Wohngebäuden",
  "maxLoanAmount": 120000,
  "eligibleMeasures": [
    "Fenstertausch",
    "Türentausch",
    "Dachdämmung",
    "Wanddämmung",
    "Kellerdeckendämmung",
    "Heizungsanlage",
    "Lüftungsanlage",
    "Solarthermieanlage"
  ],
  "interestRate": {
    "current": 2.75,
    "unit": "% p.a. effektiv"
  },
  "maxRepaymentPeriod": 20,
  "minRepaymentPeriod": 4,
  "tilgungszuschuss": 0,
  "notes": "Für einzelne energetische Sanierungsmaßnahmen"
}

3. `kfw_check_eligibility`

Checks which KfW programs are suitable for a specific renovation measure.

Parameters:

measure (string, required): Renovation measure (e.g., "window replacement", "roof insulation", "heating replacement", "heat pump")
building_type (string, optional): Building type (e.g., "residential building")
is_owner_occupied (boolean, optional): Owner-occupied?

Output: Applicable programs with recommendations

Example:

Claude: "Welche KfW-Programme gibt es für Wärmepumpen?"

Server antwortet mit:
{
  "measure": "Wärmepumpe",
  "applicablePrograms": [
    {
      "id": "458",
      "name": "KfW 458 - Heizungsförderung",
      "type": "Zuschuss",
      "eligibilityNotes": "30% Basis + bis zu 40% Bonuszuschläge = max 70%"
    },
    {
      "id": "359",
      "name": "KfW 359 - Kredit für Sanierungsmaßnahmen",
      "type": "Kredit",
      "eligibilityNotes": "Umfassende Sanierung mit Effizienzhaus-Standard"
    }
  ],
  "matchCount": 2,
  "recommendations": [
    "Zuschuss- und Kreditprogramme verfügbar - vergleichen Sie die Konditionen.",
    "Zuschuss-Programme erfordern keine Rückzahlung.",
    "Kredit-Programme bieten zinsgünstige Darlehen."
  ]
}

4. `kfw_calculate_funding`

Calculates estimated loan installments and funding amounts for a KfW program.

Parameters:

program (string, required): KfW program number (e.g., "358", "458")
loan_amount (number, required): Loan amount/grant amount in EUR
term_years (number, optional): Term in years (Default: 15 years for loans)

Output: Calculation with monthly installment, total burden, interest rate, and repayment subsidy

Example:

Claude: "Berechne die monatliche Rate für einen 50.000€ Kredit im KfW 358 über 15 Jahre"

Server antwortet mit:
{
  "program": "358",
  "loanAmount": 50000,
  "termYears": 15,
  "type": "Kredit",
  "monthlyPayment": 351.24,
  "totalPayment": 63223.0,
  "totalInterest": 13223.0,
  "effectiveInterestRate": 2.75,
  "tilgungszuschuss": 0,
  "netLoanAmount": 50000,
  "notes": "Zinssatz: 2.75% p.a. effektiv"
}

For grants (e.g., KfW 458):

Claude: "Berechne den Zuschuss für eine 15.000€ Wärmepumpen-Anlage im KfW 458"

Server antwortet mit:
{
  "program": "458",
  "loanAmount": 15000,
  "type": "Zuschuss",
  "monthlyPayment": 0,
  "tilgungszuschuss": 10500,
  "netLoanAmount": 4500,
  "subsidyPercentage": 70,
  "notes": "70% Zuschuss = 10500€ nicht rückzahlbar"
}

Supported KfW Programs

Number	Name	Type	Category
358	Supplementary loan for individual measures	Loan	BEG Individual Measures
359	Loan for renovation measures	Loan	BEG Complete Renovation
261	Residential building efficiency house loan	Loan	BEG Efficiency House
458	Heating subsidy	Grant	BEG Heating
459	Grant for individual measures	Grant	BEG Individual Measures

(Other programs like 455, 440, 461 as legacy programs in the dataset)

Program Logic

Data Acquisition

Primary: Fallback to static database (src/data/kfw-programs.json)
Secondary: Attempt to scrape live data from https://www.kfw.de/inlandsfoerderung/Privatpersonen/Bestandsimmobilien/
In case of scraping error → Static data is used automatically

Funding Amount Calculation

For loans:

Monthly installment: Standardized annuity formula with compound interest
Repayment subsidy is deducted from the loan base
Effective interest rate according to KfW specifications

For grants:

Percentage subsidy on total costs
KfW 458: Base 30% + bonus surcharges (up to 70% max)
KfW 459: Base 15% + standards (up to 25% max)

Development

Project Structure

kfw-mcp/
├── src/
│   ├── index.ts                 # MCP Server Entry Point
│   ├── tools/
│   │   ├── listPrograms.ts      # Tool 1: Programmübersicht
│   │   ├── programDetails.ts    # Tool 2: Details
│   │   ├── checkEligibility.ts  # Tool 3: Eignung
│   │   └── calculateFunding.ts  # Tool 4: Berechnung
│   ├── utils/
│   │   └── scraper.ts           # Web-Scraping-Hilfsfunktionen
│   └── data/
│       └── kfw-programs.json    # Statische Programmdatenbank
├── dist/                        # Kompilierte JavaScript-Dateien
├── package.json
├── tsconfig.json
└── README.md

Build and Test

# TypeScript compilieren
npm run build

# Server starten
npm start

# Entwicklungsmodus (mit Auto-Rebuild)
npm run dev

Update Data

Program and interest rate data can be updated in src/data/kfw-programs.json:

{
  "programs": [
    {
      "id": "358",
      "name": "KfW 358 - ...",
      "interestRate": { "current": 2.75, "unit": "% p.a. effektiv" },
      ...
    }
  ]
}

License

MIT License - See LICENSE file

Contact

Tim Fellendorf timfellendorf@googlemail.com

Part of the Sanierungskompass project to support energy-efficient building renovation in Germany.

This server cannot be installed

license - permissive license

Not graded

quality - not tested

maintenance

How are these scores calculated?

Maintenance

–Maintainers

–Response time

–Release cycle

–Releases (12mo)

Commit activity

Resources

GitHub Repository

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KfW Funding MCP Server

What is KfW funding?

Features

Installation

NPM Package

From Source

Usage

Start as an MCP Server

Configure with Claude Desktop

With Claude Code

Available Tools

1. kfw_list_programs

2. kfw_get_program_details

3. kfw_check_eligibility

4. kfw_calculate_funding

Supported KfW Programs

Program Logic

Data Acquisition

Funding Amount Calculation

Development

Project Structure

Build and Test

Update Data

License

Contact

Maintenance

Resources

Looking for Admin?

Related MCP Servers

Nefino MCP Serverofficial

FluentLab Funding Assistant

Cernion Grid Intelligence

Bundestag MCP Server

Related MCP Connectors

Latest Blog Posts

MCP directory API

1. `kfw_list_programs`

2. `kfw_get_program_details`

3. `kfw_check_eligibility`

4. `kfw_calculate_funding`