# systemd **Canonical:** https://apis.io/providers/systemd/ **Website:** https://systemd.io **APIs profiled:** 34 systemd is a suite of basic building blocks for a Linux system. It runs as PID 1 and is the system and service manager that bootstraps the rest of the userspace, supervises long-running services, and exposes a coordinated set of D-Bus and Varlink IPC interfaces for managing services (systemd1), users and sessions (logind), network interfaces (networkd), name resolution (resolved), containers/VMs (machined), home directories (homed), boot entries (boot1/sysupdate1), system hostname/locale/timedate, OOM protection (oomd), portable services, and image imports. The project also publishes a stable command-line surface (systemctl, journalctl, networkctl, resolvectl, loginctl, machinectl, hostnamectl, timedatectl, localectl, busctl, varlinkctl, bootctl, homectl, coredumpctl, oomctl, portablectl, importctl, systemd-analyze and more). systemd is dual-licensed (LGPL-2.1-or-later for libraries and most code, GPL-2.0-or-later for select tools) and developed openly on GitHub at systemd/systemd. ## Kin Score — 29.2 / 100 (thin) Scored 2026-08-25 under rubric 0.14.0. Trend: flat (+0.0 from 29.2). | Facet | Score | |---|---| | Discoverability | 68.5 | | Contract Quality | 49.0 | | Governance | 28.8 | | Contract Governance | 28.8 | | Operational Transparency | 18.4 | | Developer Ergonomics | 21.4 | | Commercial Clarity | 0.0 | | Access Clarity | 0.0 | ## Agent readiness — 16.5 (agent-aware) | Dimension | Value | |---|---| | Spec Presence | yes | | Agentic Access | derived | | Reversibility Documented | documented | | MCP Server | no | | Auth Clarity | no | | Idempotency | no | | Error Semantics | no | | OpenAPI Examples | no | | Rate Limit Signal | no | | Event Surface Described | no | | Agent Skills | no | | Well Known Catalog | no | | Consent Identity | no | | Agent Card | no | | Dry Run Mode | no | | Delegated Identity | no | | Protected Resource Metadata | no | | Dynamic Client Registration | no | | Agentic Commerce | no | ## Access Unknown — onboarding: unknown, pricing: unknown, trial: no (confidence: low). ## APIs (34) - **systemd-localed (org.freedesktop.locale1)** — D-Bus API of systemd-localed for getting and setting the system locale, X11 keymap, and console keymap. - **systemd-timedated (org.freedesktop.timedate1)** — D-Bus API of systemd-timedated for getting and setting the system time, timezone, NTP enablement, and RTC-in-local-time policy. - **systemd-timesyncd (org.freedesktop.timesync1)** — D-Bus API of systemd-timesyncd exposing the current NTP server, peers, root delay/dispersion, and synchronization status. - **systemd-homed (org.freedesktop.home1)** — D-Bus API of systemd-homed for managing portable, encrypted user home directories (LUKS, btrfs subvol, fscrypt, CIFS, directory) including create/remove/update/list operations, ... - **systemd-importd (org.freedesktop.import1)** — D-Bus API of systemd-importd for importing, exporting, downloading, listing, and removing container/VM machine images (tar, raw, dkr/OCI, qcow2) used by machined and portable se... - **systemd-oomd (org.freedesktop.oom1)** — D-Bus API of systemd-oomd, the userspace out-of-memory killer that uses cgroup v2 PSI signals to kill cgroups under memory or swap pressure. Exposes per-slice/cgroup state and p... - **systemd-portabled (org.freedesktop.portable1)** — D-Bus API of systemd-portabled for attaching/detaching portable service images, listing attached images, inspecting them, and managing their lifecycle on the host. - **systemd-sysupdated (org.freedesktop.sysupdate1)** — D-Bus API of systemd-sysupdated for transactional A/B updates of system/host/portable/container images using systemd-sysupdate transfers, including target enumeration, version l... - **LogControl1 (org.freedesktop.LogControl1)** — Generic D-Bus interface that systemd daemons (and other services) implement to expose runtime log level and log target configuration. Allows tools like systemd-analyze to change... - **systemd Boot API** — The Boot API from systemd — 1 operation(s) for boot. - **systemd Cache API** — The Cache API from systemd — 2 operation(s) for cache. - **systemd Cgroups API** — Transient unit creation and cgroup-backed resource control. - **systemd Configuration API** — The Configuration API from systemd — 11 operation(s) for configuration. - **systemd Credentials API** — The Credentials API from systemd — 2 operation(s) for credentials. - **systemd Hostname API** — The Hostname API from systemd — 3 operation(s) for hostname. - **systemd Image API** — The Image API from systemd — 1 operation(s) for image. - **systemd Images API** — The Images API from systemd — 4 operation(s) for images. - **systemd Inhibitors API** — The Inhibitors API from systemd — 1 operation(s) for inhibitors. - **systemd Jobs API** — Pending and active jobs scheduled by the Manager. - **systemd Links API** — The Links API from systemd — 7 operation(s) for links. - **systemd Machine Info API** — The Machine Info API from systemd — 4 operation(s) for machine info. - **systemd Machines API** — The Machines API from systemd — 7 operation(s) for machines. - **systemd Manager API** — The Manager API from systemd — 12 operation(s) for manager. - **systemd PCR API** — The PCR API from systemd — 1 operation(s) for pcr. - **systemd Power API** — The Power API from systemd — 5 operation(s) for power. - **systemd Resolution API** — The Resolution API from systemd — 4 operation(s) for resolution. - **systemd Resolve API** — The Resolve API from systemd — 1 operation(s) for resolve. - **systemd Seats API** — The Seats API from systemd — 1 operation(s) for seats. - **systemd Sessions API** — The Sessions API from systemd — 5 operation(s) for sessions. - **systemd Snapshots API** — System state introspection. - **systemd Unit API** — The Unit API from systemd — 2 operation(s) for unit. - **systemd Units API** — Unit lifecycle and enumeration. - **systemd UserDatabase API** — The UserDatabase API from systemd — 3 operation(s) for userdatabase. - **systemd Users API** — The Users API from systemd — 3 operation(s) for users. ## Agentic access (1) - **Systemd Agentic Access** — 90 operations · 69 acting · 10 human-in-the-loop ## Security (1) - **Systemd Domain Security** — TLSv1.3 · DMARC ## Tags Boot, Cgroups, Container, D-Bus, Init, IPC, journal, Linux, Logging, Network, Open-Source, PID 1, Service Manager, System, systemd, Varlink --- Profiled by [API Evangelist](https://apievangelist.com) and published on [APIs.io](https://apis.io/providers/systemd/). Scores are computed from the provider's own public artifacts under a published rubric.