Build LangSmith forms with Paperform

LangSmith is an LLM observability and evaluation platform by LangChain. Trace, evaluate, and debug your LLM applications with detailed run logging, dataset management, and feedback collection.

Paperform connects to LangSmith directly through Stepper workflows.

How LangSmith connects to Paperform

Direct methods run inside your Paperform account. Zapier and Make are there too if your team already uses them.

Stepper workflows

Direct

Run a Stepper workflow when someone submits your form: 9 LangSmith actions and 2 triggers, included in your Paperform account.

Open Stepper from your Paperform account and create a workflow.
Start it with the Paperform “New Submission” trigger and choose your form.
Add a LangSmith step, connect your account and map the submission’s answers to its fields.

LangSmith actions in Stepper

Create Run
Update Run
Create Feedback
Create Dataset
Create Example
Update Example
Create Project
Get Run
Make HTTP Request

LangSmith events that can start a workflow

New Run
New Feedback

What your form sends to LangSmith

For example, with a Stepper workflow the “Create Run” action takes these fields. Map each one to a question on your form, and every submission fills them in.

LangSmith field	Question on your form	Required
Run Name	Short answer	Yes
Run Type	Dropdown or choice	Yes
Inputs	Short answer	Yes
Outputs	Short answer	No
Project	Dropdown or choice	No
Parent Run ID	Short answer	No
Error	Short answer	No
Start Time	Date	No

Start from a template

Pick a template, then connect it to LangSmith. There are 30,000+ in the templates directory.

Client Intake Form

Job Application Form

Sales Order Form

Quote Form

Employee Benefits Enrollment Form

Non-Disclosure Agreement (NDA) for SaaS Companies

More developer tools integrations

Questions

1. Does Paperform integrate with LangSmith?

Yes. Paperform connects to LangSmith through Stepper workflows.

2. How do I connect Paperform to LangSmith?

Open Stepper from your Paperform account and create a workflow. 2. Start it with the Paperform “New Submission” trigger and choose your form. 3. Add a LangSmith step, connect your account and map the submission’s answers to its fields.

3. Do I need Zapier to connect LangSmith?

No. Stepper workflows runs inside your Paperform account.

4. What can a Stepper workflow do in LangSmith?

Create Run, Update Run, Create Feedback, Create Dataset, Create Example and Update Example, and 3 more actions. Stepper is included in your Paperform account.

5. What else can happen after someone submits the form?

The same submission can take a payment, get a document signed with Papersign and run more steps in a Stepper workflow, all from your Paperform account.

Bring us the workflow that keeps breaking

Start with the one form whose data never quite lands where it should. Connect the rest when you're ready.

Start building