🇨🇭 Part of the Swiss Public Data MCP Portfolio

📡 bakom-mcp

MCP server for BAKOM open data – broadband, mobile coverage, media and Swiss telecom statistics.

🇩🇪 Deutsche Version

Overview

bakom-mcp connects AI assistants like Claude to the Swiss Federal Office of Communications (BAKOM) open data infrastructure. It enables natural-language queries about broadband availability, 5G/4G coverage, mobile antenna locations, BAKOM datasets on radio and television, and telecommunications statistics — all without API keys.

All data is published as Open Government Data (OGD) on opendata.swiss / geo.admin.ch under CC BY 4.0 — see the Data Licence section below for attribution requirements.

Anchor demo query: "Which school buildings in district 7 do not yet have fibre optic connectivity?"

bakom_multi_standort_konnektivitaet delivers the comparison table automatically.

→ More use cases by audience →

Scope

What this server does

✓ Read-only queries against three public BAKOM/Confederation APIs:

• api3.geo.admin.ch / wms.geo.admin.ch (broadband, mobile coverage, antennas)
• ckan.opendata.swiss (telecom statistics, dataset metadata)

✓ Returns aggregated, anonymous data — no personal data, no household-level identification.

✓ Bound to Swiss WGS84 coordinates (lat 45.8–47.9, lon 5.9–10.6) via Pydantic input validation.

✓ Egress is locked to a code-layer allow-list of the six known data-source hosts.

What this server does not

✗ Send data anywhere (read-only, no write tools).

✗ Access the local filesystem (no path-traversal surface).

✗ Use authentication tokens (none required — all sources are public OGD).

✗ Cache or persist user inputs across calls.

✗ Execute shell commands or arbitrary code (no subprocess/os.system/eval).

Features

• 📶 Broadband availability – Fixed-line coverage at 30/100/300/500/1000 Mbit/s (250×250m grid)
• 🔌 Fibre status – FTTB/FTTH availability per location
• 📍 Multi-location comparison – Connectivity check for up to 20 locations simultaneously
• 📱 Mobile coverage – 5G/4G/3G outdoor coverage (100×100m grid)
• 📡 Antenna search – Mobile and broadcast transmitters within a configurable radius
• 📺 Radio & TV datasets – Full-text search across BAKOM's radio and television datasets on opendata.swiss
• 🗞️ Media landscape – BAKOM media structure reports and datasets
• 📊 Telecom statistics – Fixed-line, mobile, broadband market data via opendata.swiss
• 🗂️ Broadband Atlas catalogue – All BAKOM dataset layers with direct API links
• 🔓 No authentication required – All data is Open Government Data (OGD)

Prerequisites

• Python 3.11+
• uv or pip for installation
• Internet connection (live APIs: geo.admin.ch, opendata.swiss)

Installation

# Recommended: uvx (no permanent installation required)
uvx bakom-mcp

# Or install with pip
pip install bakom-mcp

# Development install
git clone https://github.com/malkreide/bakom-mcp
cd bakom-mcp
pip install -e ".[dev]"

Quickstart

Claude Desktop

Add to claude_desktop_config.json:

{
  "mcpServers": {
    "bakom": {
      "command": "uvx",
      "args": ["bakom-mcp"]
    }
  }
}

Config file locations:

• macOS: ~/Library/Application Support/Claude/claude_desktop_config.json
• Windows: %APPDATA%\Claude\claude_desktop_config.json

Cloud / HTTP Transport

python -m bakom_mcp.server --http
# Server running at http://localhost:8050/mcp

Configuration via environment variables (see .env.example):

Docker

A hardened container image is provided. Suitable for cloud deployments behind a reverse proxy (Caddy, Traefik, nginx).

# Build & run via compose (recommended)
docker compose up --build

# Or via docker run
docker build -t bakom-mcp:latest .
docker run --rm \
  --read-only \
  --cap-drop=ALL \
  --security-opt=no-new-privileges \
  --tmpfs /tmp:rw,size=16M \
  -p 127.0.0.1:8050:8050 \
  bakom-mcp:latest

The image runs as non-root (UID 10001), uses a read-only filesystem, drops all Linux capabilities and refuses privilege escalation. Resource limits are configured in docker-compose.yml (256 MB memory, 0.5 CPU, 64 PIDs). The default port mapping binds to 127.0.0.1 only — for public exposure, terminate TLS and CORS at a reverse proxy.

Cursor / VS Code / LibreChat

{
  "bakom": {
    "command": "uvx",
    "args": ["bakom-mcp"],
    "transport": "stdio"
  }
}

💡 "stdio for the developer laptop, HTTP/SSE for the browser."

Available Tools (12)

Broadband & Connectivity

Mobile & Transmitters

Media & RTV

Statistics & Catalogue

Example Prompts

What is the broadband situation at Schulhaus Leutschenbach (47.4148, 8.5654)?

Compare 5G and fibre coverage for these three school buildings: [coordinates]

Which radio stations are licensed in canton Zurich?

Show me the current BAKOM position on 5G frequency allocation.

List all Broadband Atlas datasets available via geo.admin.ch.

Safety & Limits

Data Sources

All data is published under open licences (CC0 / OGD).

Architecture decision — media statistics

bakom_medien_statistik uses Architecture A (live API only), verified live on 2026-08-13:

• The SPARQL endpoint is https://lindas.admin.ch/query; the /sparql path documented elsewhere returns 404.
• The OFCOM cubes live in the named graph https://lindas.admin.ch/ofcom/cube. Without an explicit FROM, a query hits the default graph and sees 2010 cubes from every federal office instead of 540.
• A bulk download exists for only 137 of 540 cubes, so a dump-first architecture would cover a quarter of the data.
• An unknown graph answers HTTP 200 with zero rows — a silent empty, not an error. Requests carry retry with exponential backoff; egress-policy violations are not retried.

Scope, stated in the tool description because the README does not reach the model: the cubes cover the programmes that were surveyed, not the full inventory. LINDAS's own count cube reports 199+39+17 radio programmes for 2020, while the Programm dimension across all cubes exposes 128 labels — some of which are the same station spelled differently (Energy BE / Energy Bern), plus Durchschnitt, which is an aggregate rather than a station. This tool is a statistics source, not a broadcaster register; licensed broadcasters are listed in the RTV database, which offers no machine-readable interface.

Synergies with the MCP Portfolio

bakom-mcp can be combined with other servers in the portfolio for multi-dimensional queries:

zurich-opendata-mcp  →  school building addresses
         +
    bakom-mcp         →  fibre and 5G status
         =
"Digital equity" dashboard for all school districts

Further combinations:

• srgssr-mcp + bakom-mcp → Media coverage and broadcast network
• swiss-statistics-mcp + bakom-mcp → Telecom market development
• fedlex-mcp + bakom-mcp → Regulatory context (RTVG, FMG)

Project Structure

bakom-mcp/
├── src/bakom_mcp/
│   ├── __init__.py          # Package
│   ├── server.py            # MCP server (12 tools, 2 resources)
│   └── py.typed             # PEP 561 type marker
├── tests/
│   └── test_integration.py  # Integration tests (live APIs)
├── assets/
│   └── demo.svg             # Demo flow diagram
├── .github/workflows/
│   ├── ci.yml               # CI: lint, syntax, import, tests
│   └── publish.yml          # PyPI publish on release
├── .gitignore
├── pyproject.toml           # Build config (hatchling)
├── CHANGELOG.md
├── CONTRIBUTING.md          # Contribution guide (English)
├── CONTRIBUTING.de.md       # Contribution guide (German)
├── SECURITY.md              # Security policy (English)
├── SECURITY.de.md           # Security policy (German)
├── LICENSE                  # MIT License
├── README.md                # This file (English)
└── README.de.md             # German version

MCP Protocol Version

This server speaks two protocol eras over the same endpoint. The client's first request on a connection decides which one applies; a later claim from the other era is refused.

Both revisions are pinned in tests/test_protocol_version.py and asserted against the installed SDK, so a Dependabot bump of mcp cannot move either one silently. The handshake ceiling is measured against a live initialize through the assembled ASGI stack, not read off a constant name.

Note that the SDK's LATEST_PROTOCOL_VERSION is an alias for the modern era, not for the handshake era — pinning against it alone would leave the era that current clients actually negotiate free to drift.

Native in the envelope era. The server uses nothing the 2026-07-28 spec deprecates (SEP-2577: logging, sampling, roots). The status text of bakom_multi_standort_konnektivitaet travels in the progress notification instead of ctx.info() — in the modern era logging is delivered only when the request opts in with a log level in _meta, and without that opt-in the line was silently dropped. serverInfo carries the package version on initialize and on server/discover alike. A tool call needs neither a handshake nor an Mcp-Session-Id. tests/test_modern_era.py checks this over real connections in both eras, and the suite treats every MCPDeprecationWarning as an error.

What the server announces. No change notifications: tools, resources and prompts are fixed at import, so the server reports listChanged and resources.subscribe as false in both eras and rejects subscriptions/listen. No outputSchema: tools return text (Markdown or a JSON string) in content. Both are checked by tests/test_capabilities.py.

Update policy. When the gate fails, do not edit the constant blindly: read the spec changelog between the two revisions, verify the server still behaves, then move the constant, this section, README.de.md and CHANGELOG.md together.

Testing

# Unit tests (no network required)
PYTHONPATH=src pytest tests/ -m "not live"

# Integration tests (live APIs, internet required)
PYTHONPATH=src pytest tests/ -m "live"

Changelog

See CHANGELOG.md

Contributing

Contributions are welcome! See CONTRIBUTING.md (🇩🇪 Deutsch) for guidelines on reporting bugs, suggesting features, and submitting pull requests.

Security

To report a vulnerability, see the Security Policy (🇩🇪 Deutsch). Please report security issues privately via GitHub Security Advisories rather than public issues.

Software Licence

MIT License — see LICENSE.

Data Licence

The BAKOM open data delivered through this server is published under CC BY 4.0. When using or redistributing tool outputs, attribute the source as:

Source: Federal Office of Communications (BAKOM) via opendata.swiss / geo.admin.ch · Licence: CC BY 4.0

Tool outputs already include this footer automatically. The Markdown response format ends with the attribution line; downstream applications that consume the JSON format should propagate the source/licence metadata to their end users.

Author

Hayal Oezkan · github.com/malkreide

Credits & Related Projects

• Data: BAKOM Open Data – Federal Office of Communications (OFCOM/BAKOM)
• Geodata: geo.admin.ch – swisstopo / Federal Geodata Infrastructure
• Protocol: Model Context Protocol – Anthropic / Linux Foundation
• Related: zurich-opendata-mcp – MCP server for Zurich city open data
• Related: swiss-transport-mcp – Swiss public transport MCP server
• Portfolio: Swiss Public Data MCP Portfolio

Part of the Swiss Open Data MCP portfolio — public data deserves public interfaces.

Installation

Run via uv's uvx — no clone or manual install needed. Add to your MCP client config (mcpServers for Claude Desktop, Cursor and Windsurf; use a top-level servers key for VS Code in .vscode/mcp.json):

{
  "mcpServers": {
    "bakom-mcp": {
      "command": "uvx",
      "args": [
        "bakom-mcp"
      ]
    }
  }
}