@b4run/langgraph

LangGraph.js adapters and route-module contracts for B4.run graphs and workflows.

Use this when: You are integrating raw graphs or workflows with B4.run route contracts. Agent and tool authors who do not need raw route modules should start with @b4run/sdk.

Install

pnpm add @b4run/langgraph

Example

import { defineEntry, graphAdapter } from "@b4run/langgraph"

const route = defineEntry({
  graph: async (input: { name: string }) => ({ greeting: `Hello, ${input.name}` }),
})

const result = await graphAdapter.execute(route.graph, { name: "B4.run" }, {
  signal: new AbortController().signal,
})

Runtime and stability

• @b4run/langgraph is an edge-safe, supported integration surface for adapters and route contracts.
• @b4run/langgraph/define-entry is an edge-safe, supported entry-validation subpath.
• @b4run/langgraph/route-module is an edge-safe, supported normalization and route-type subpath.

These surfaces contain no third-party runtime dependencies or Node globals. That boundary does not classify graphs, workflows, or tools supplied by an application.

Related

• @b4run/sdk — higher-level route, agent, and tool contracts.
• @b4run/langchain — LangChain agent and chain materialization.
• LangGraph API reference — route-module exports and adapter behavior.
• Routes guide — B4.run's filesystem route model.

Maturity and support

This package is pre-1.0 and releases in B4.run's fixed package group. Review the changelog before upgrading. For support, open an issue.

License

MIT. See the repository license.