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Ettore Di Giacinto
64059cd7d7
Phase 2 gated agent nodes out of tunnel credentials at the mint site. That was right while nothing dialled into an agent worker: a credential would have replaced nothing, and the gate was structural rather than a second check that could drift. It is wrong now that the frontend needs to reach an agent worker by RPC. attachTunnelToken mints for backend and agent nodes and CLEARS for anything else, through one tunnelEligible predicate rather than two conditions that can be widened separately. ConnectHandler still never reads NodeType, so an empty hash is still what refuses an ineligible node. An agent worker now starts a loopback control server behind the same bearer check a backend worker uses, and holds one tunnel whose only stream tag is http: it runs no backend processes, so the grpc tag has nothing to route to and is not offered. Its MCP tool, MCP discovery and backend.stop verbs are served from ONE implementation reached by both the bus and the tunnel, so a frontend cannot get different bytes depending on which carrier delivered. The tunnel is an ADDITION. --nats-url is still required, and agent jobs, MCP execution, MCP CI jobs and nodes.<id>.backend.stop all still travel on the bus. Absence semantics are unchanged. An agent node now has a real node_connections row whose departure ages past the grace, so the node type check in HealthMonitor.tunnelDeparted stopped being an optimisation and became the rule; its comment says so, and the spec that pins it is shown red under a mutation that deletes the check. The scheduler needed no change: every placement query already filters node_type = backend, so an agent node never reaches nodeMayTakeWork. Shared rules moved to one site each. The request bounds, the POST-only check and the unknown-path 404 live in workerctl and are called by both worker packages; the bearer check that guards every extra route is one function in core/services/nodes used by both server constructors. workerctl.AllPaths splits into BackendPaths and AgentPaths, with AllPaths as their deduped union, because a backend worker does not mount the agent verbs and asserting otherwise would fail a correct worker. Assisted-by: Claude Opus 5 [claude-code] Signed-off-by: Ettore Di Giacinto <mudler@localai.io>