Does LangChain have API Access?

Q: Does LangChain have API Access?

Yes, LangChain supports API Access. OSS libraries plus LangSmith / Agent Server APIs. Requires the free plan.

LangChain supports API Access. Provides a REST API for developers to programmatically integrate the AI model into their own custom applications and workflows. LangChain is an open-source agent framework (LangChain, LangGraph, Deep Agents) with 350M+ monthly downloads. OSS libraries plus LangSmith / Agent Server APIs.

Tool: 🦜 LangChain by LangChain
Feature: API Access · Integrations
Status: Yes, requires free plan
Notes: OSS libraries plus LangSmith / Agent Server APIs.
Pricing: Requires free plan.
Source: langchain.com
Last verified: 2026-09-02

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How do other tools compare for API Access?

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