Spanda

Mesh Topology

Entity Mesh topology is a projection of the Entity Graph plus live link metrics — not a separate disconnected graph.

Core types

Type	Role
EntityMesh	Root mesh state container
MeshNode	Per-entity reachability, trust, capabilities, neighbors
MeshNeighbor	Adjacent node with transport and link metrics
MeshLink	Directed link with latency, loss, trust
MeshTopology	Snapshot: nodes, links, coordinator, partitions

Node state

Each MeshNode tracks: entity_id, node_id, transport, reachable, neighbors, capabilities, health, readiness, trust_score, latency, bandwidth, packet_loss, hop_count, last_seen, battery, role, coordinator_status, supported_protocols, security_identity.

Discovery sources

• Local runtime (entity registry)
• Entity graph relationships
• DDS, ROS2, MQTT, mDNS, BLE, Wi-Fi subnet, manual config (via transport providers)

CLI

spanda mesh topology
spanda mesh graph --json

API

GET /v1/mesh/topology · GET /v1/mesh/graph

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