@threadplane/middleware/langgraphFunctionv0.0.2

routeAfterAgent

Routing helper for a LangGraph conditional edge. Returns toolsNode when the last message has a server tool call (dispatch to the server ToolNode); otherwise end (client-only calls — the browser executes them — and no-tool-call turns both end).

toolsNode defaults to 'server_tools'. It cannot default to 'tools', because clientToolsChannel declares a tools state channel and LangGraph.js shares one namespace between channel names and node names — addNode('tools', …) throws "tools is already being used as a state attribute".

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import { routeAfterAgent } from '@threadplane/middleware/langgraph';

Declaration · overload 1

export declare function routeAfterAgent(state: ClientToolsState, serverToolNames: Iterable<string>, opts?: {
    toolsNode?: string;
    end?: string;
}): string;

Parameters

state · required: ClientToolsState
serverToolNames · required: Iterable<string>
opts · optional: { toolsNode?: string; end?: string; }

Returns

string