What can I automate with LangSmith in Sim?

With Sim you can: Create Run; Create Runs Batch. Each action runs inside an AI agent block, so you can combine LangSmith with LLM reasoning, conditional logic, and data from any other connected service.

How do I connect LangSmith to Sim?

Getting started takes under five minutes: (1) Create a free account at sim.ai. (2) Open your workspace and create an agent. (3) Drag a LangSmith block onto the workflow builder. (4) Add your API key to authenticate — find it in your account settings. (5) Choose the tool you want to use, wire it to the inputs you need, and click Run. Your agent is live.

Can I use LangSmith as a tool inside an AI agent in Sim?

Yes — this is one of Sim's core capabilities. Instead of hard-coding when and how LangSmith is used, you give an AI agent access to LangSmith tools and describe the goal in plain language. The agent decides which tools to call, in what order, and how to handle the results. This means your automation adapts to context rather than breaking when inputs change.

How do I create run with LangSmith in Sim?

Add a LangSmith block to your agent and select "Create Run" as the tool. Fill in the required fields — you can reference outputs from earlier steps, such as text generated by an AI agent or data fetched from another integration. No code is required.

What LangSmith tools does Sim support?

Sim supports 2 LangSmith tools: Create Run, Create Runs Batch.

Is the LangSmith integration free to use?

Yes — Sim's free plan includes access to the LangSmith integration and every other integration in the library. No credit card is needed to get started. Visit sim.ai to create your account.

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LangSmith

Forward workflow runs to LangSmith for observability

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Overview

Send run data to LangSmith to trace executions, attach metadata, and monitor workflow performance.

How to automate LangSmith with Sim

Create a free account
Sign up at sim.ai in seconds. No credit card required. Your workspace is ready immediately.
Add a LangSmith block
Open your workspace, drag a LangSmith block onto the workflow builder, and paste in your LangSmith API key.
Configure, connect, and run
Pick the tool you need, wire in an AI agent for reasoning or data transformation, and run. Your LangSmith automation is live.

Supported tools

2 LangSmith tools available in Sim

Create Run

Forward a single run to LangSmith for ingestion.

Create Runs Batch

Forward multiple runs to LangSmith in a single batch.

Frequently asked questions

Sim's LangSmith integration lets you build AI agents that automate tasks in LangSmith without writing code. Forward workflow runs to LangSmith for observability You can connect LangSmith to hundreds of other services in the same agent — from CRMs and spreadsheets to messaging tools and databases.

Start automating LangSmith today

Build your first AI agent with LangSmith in minutes. Connect to every tool your team uses. Free to start — no credit card required.

LangSmith

Overview

How to automate LangSmith with Sim

Create a free account

Add a LangSmith block

Configure, connect, and run

Supported tools

Frequently asked questions

Start automating LangSmith today