diff --git a/tailnet/coordinator.go b/tailnet/coordinator.go
index d6e8b6bbb6e59..ee696b0925e3c 100644
--- a/tailnet/coordinator.go
+++ b/tailnet/coordinator.go
@@ -16,14 +16,25 @@ import (
 
 // Node represents a node in the network.
 type Node struct {
-	ID            tailcfg.NodeID     `json:"id"`
-	Key           key.NodePublic     `json:"key"`
-	DiscoKey      key.DiscoPublic    `json:"disco"`
-	PreferredDERP int                `json:"preferred_derp"`
-	DERPLatency   map[string]float64 `json:"derp_latency"`
-	Addresses     []netip.Prefix     `json:"addresses"`
-	AllowedIPs    []netip.Prefix     `json:"allowed_ips"`
-	Endpoints     []string           `json:"endpoints"`
+	// ID is used to identify the connection.
+	ID tailcfg.NodeID `json:"id"`
+	// Key is the Wireguard public key of the node.
+	Key key.NodePublic `json:"key"`
+	// DiscoKey is used for discovery messages over DERP to establish peer-to-peer connections.
+	DiscoKey key.DiscoPublic `json:"disco"`
+	// PreferredDERP is the DERP server that peered connections
+	// should meet at to establish.
+	PreferredDERP int `json:"preferred_derp"`
+	// DERPLatency is the latency in seconds to each DERP server.
+	DERPLatency map[string]float64 `json:"derp_latency"`
+	// Addresses are the IP address ranges this connection exposes.
+	Addresses []netip.Prefix `json:"addresses"`
+	// AllowedIPs specify what addresses can dial the connection.
+	// We allow all by default.
+	AllowedIPs []netip.Prefix `json:"allowed_ips"`
+	// Endpoints are ip:port combinations that can be used to establish
+	// peer-to-peer connections.
+	Endpoints []string `json:"endpoints"`
 }
 
 // ServeCoordinator matches the RW structure of a coordinator to exchange node messages.