# ccu-mcp

MCP server for controlling HomeMatic smart home devices via the CCU JSON-RPC API

- **Type:** MCP server
- **Trust:** 85/100 (A), scored on the package rubric
- **Verification:** verified (build provenance)
- **Version:** 1.10.0
- **Author:** io.github.claymore666
- **License:** Unknown
- **npm:** ccu-mcp
- **Source:** https://github.com/claymore666/ccu-mcp
- **Compatible clients:** claude-code, cursor, copilot, gemini (basis: transport)

## Trust

85/100 (A), scored on the package rubric
- Publisher verified: no
- Build provenance: verified attestation
- npm trusted publishing (OIDC): yes
- Install scripts: nothing suspicious found
- Prompt-injection scan: not run
- Obfuscation scan: not run
- Evidence age: 19 days

## Security scan

- **Status:** clean
- **Scanned:** 2026-08-09T23:44:48.041Z
- **Version scanned:** 1.9.1
- **CVEs:** none found by OSV at scan time

## Tools

26 declared. Statically extracted from the shipped source — a floor on the surface, not a census.
- `set_value`
- `put_paramset`
- `set_system_variable`
- `create_system_variable`
- `delete_system_variable`
- `execute_program`
- `get_service_messages`
- `acknowledge_service_messages`
- `get_system_info`
- `get_rssi`
- `list_devices`
- `list_interfaces`
- `list_rooms`
- `list_functions`
- `list_programs`
- `list_system_variables`
- `describe_device_type`
- `list_links`
- `help`
- `run_script`
- `get_value`
- `get_values`
- `get_paramset`
- `list_ccu_targets`
- `get_connection_info`
- `use_ccu`

## Install

**Verdict: install** — No blocking findings and no open coverage gaps — safe to install as configured.
**Config** (claude-code):
```json
"{\n  \"mcpServers\": {\n    \"ccu\": {\n      \"command\": \"npx\",\n      \"args\": [\n        \"-y\",\n        \"ccu-mcp\"\n      ]\n    }\n  }\n}"
```

## Blast radius

Extensive to critical — no credential declaration found, from the publisher, the upstream registry, or the README. Known so far: deletes data; runs on your machine.
- Floor 37, ceiling 61 (tier: unknown)
- `unknown` means the floor and ceiling land in different bands — not measured enough to name one. It does not mean low.
- This is impact, not likelihood. A high radius is not a defect: a filesystem server is supposed to write files. It is never part of the trust score.

## Machine-readable views of this entry

- Signed JSON: https://forgeregistry.com/api/v1/packages/ccu-mcp
- Install plan: https://forgeregistry.com/api/v1/packages/ccu-mcp/install-plan
- Alternatives: https://forgeregistry.com/api/v1/alternatives/ccu-mcp
- HTML page: https://forgeregistry.com/registry/ccu-mcp
- MCP: POST https://forgeregistry.com/api/mcp → `forge_get_package` / `forge_install_plan`

## About this document

Generated by Forge (https://forgeregistry.com) — a compact rendering of the same record served, signed, at the JSON URL above. Trust and scan facts are the registry's own measurements; anything Forge did not measure is named as unmeasured rather than omitted.