Pylon

Monitor types

Every check produces a result: ok, latencyMs, a human message, and a structured data snapshot. Well-known snapshot keys (players, maxPlayers, version, map, name, motd) render automatically on status pages; any other key can be shown with the component's extra fields setting.

Where checks run

  • Edge — Cloudflare's network, no setup. Outbound TCP and HTTP(S) only (no UDP, no ICMP, no private IPs).
  • Relay — a Node process you host. Adds UDP, LAN hosts, and 300+ GameDig games. See [Relay](/docs/relay).
  • Push — nothing is probed; your system calls a URL. See [Heartbeats](/docs/heartbeats).

Minecraft: Java Edition

Implements the Server List Ping handshake + status + ping packets over raw TCP. Resolves _minecraft._tcp SRV records when the port is the default 25565. Snapshot: players, maxPlayers, version, protocol, motd, sample (up to 20 names).

Option Alert if players below turns a low population into a failure (useful for lobby servers that should never be empty).

Minecraft: Bedrock Edition

Bedrock speaks RakNet over UDP. From the edge Pylon asks mcstatus.io to do the UDP hop; on a relay it queries the server directly. Snapshot: players, maxPlayers, version, motd, gamemode.

Steam / Source (A2S)

Covers every game using Valve's A2S protocol: CS2, Rust, ARK, Valheim, Palworld, Garry's Mod, TF2, L4D2, 7 Days to Die, DayZ, Squad, Project Zomboid, Unturned, Arma, Conan Exiles, and more.

  • Edge: uses the Steam Web API server list. Requires STEAM_API_KEY (free) and a server that is public on Steam's master list. Snapshot: players, maxPlayers, bots, map, name, product, version, secure.
  • Relay: real A2S_INFO query over UDP. Works for private/unlisted servers.

FiveM / RedM

Reads dynamic.json and info.json from the server's HTTP port (30120 by default). Snapshot: players, maxPlayers, name, map, gametype.

Rust (WebRCON)

Opens a WebSocket to Rust's WebRCON and runs serverinfo. Snapshot: players, maxPlayers, queued, joining, fps, entities, memoryMb, uptimeSec, map, name. Rust also works via A2S.

RCON

Source RCON authentication (Minecraft, CS2, ARK, 7DTD, Valheim mods…). Optionally run a command and require its output to contain a string — e.g. list must contain players online. Snapshot: response.

Pterodactyl / Pelican

Uses a client API key (ptlc_…) and the server's short identifier. Fails unless the container state is running. Snapshot: state, cpu, memoryMb, diskMb, uptimeSec. Works for every egg the panel hosts.

Any game (GameDig)

Relay-only. Pick a GameDig type id (Rust, Valheim, Palworld, ARK, Satisfactory, Enshrouded, TeamSpeak, SA-MP, BeamMP, …) — full list. Snapshot: players, maxPlayers, map, name, plus anything GameDig returns.

Discord

  • Widget: presence_count of a guild with Server Widget enabled. Snapshot: online, name, invite.
  • Bot: verifies a bot token against /users/@me.

HTTP / Website

Asserts status (2xx, 200,204, 200-299), body keyword present/absent, and a JSON path value (data.status == ok). Custom headers and POST bodies supported.

TCP port

Plain connect. Ideal for Terraria, Starbound, Factorio, custom servers.

DNS

Resolves via 1.1.1.1 DoH. Catches expired domains and broken SRV records before players do.

Status logic

  • A check that fails increments a counter; the monitor flips to down after Failures before down consecutive failures.
  • A successful check with latency above Degraded above marks it degraded.
  • Transitions write an event, open/resolve automatic incidents on every status page showing the monitor, notify channels, and push a live update to open browsers.
  • Raw checks are kept for 30 days inside the monitor's Durable Object; daily rollups (uptime %, latency, peak players, downtime) are kept for 400 days.