Ten applications with no MCP server of their own get one without a line of code
inside them: qdrant, checkmk, fider, jellyfin, listmonk, pretix, prometheus,
snipe-it, zammad and libretranslate.
The sidecar is confined rather than trusted. It runs read-only, drops every
capability, forbids privilege escalation, publishes no port and joins only its
own provider's network, carrying neither that provider's alias nor the consumer
networks the provider itself joined. Its tool surface is a JSON contract, not
code: which tools exist, which upstream path each maps to and what shape the
arguments take. Adding a tool is a line of JSON, not a new image.
The image is built locally from the audited adapter source with the base image
as a build argument, so all ten share one reviewed build instead of ten upstream
dependencies. Each role provisions its own read-only identity in the language
its application speaks, and every adapter include is guarded by the role's MCP
flag, so switching it off leaves no container behind.
Implements requirement 029: web-app-checkmk deploying checkmk/check-mk-raw
2.4.0p32 (Raw/Community) behind sys-svc-proxy. No native OIDC, so SSO uses the
platform oauth2-proxy gate + Checkmk header-auth (auth_by_http_header =
X-Remote-User, injected by the role proxy.conf.j2 from $authrequest_username =
Keycloak preferred_username), plus a native LDAP connection for user records.
No external DB. Agent receiver (8000) host-port mapped via a new
PORT_BANDS.local.agent band.
Auth/LDAP/proxy mechanisms source-verified against Checkmk v2.4.0p32
(cmk/gui/auth.py, userdb/ldap_connector.py, userdb/_connections.py) and the
infinito sso_proxy nginx chain: fixed the LDAP file path (user_connections.mk)
and directory_type ("openldap"). LDAP sync timing and classic-GUI Playwright
selectors remain live-deploy-validation items (env-blocked).
Validation: make autoformat clean; make test green (lint, test-lint, test-unit,
test-integration 190, test-external).
Refs: docs/requirements/029-web-app-checkmk.md
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
kevinveenbirkenbach
