Integration
Connect Fillout Forms and Polar
When New Submission fires in Fillout Forms, your agent runs Create Customer in Polar, or Order Paid in Polar to Add Submission in Fillout Forms. Describe the whole flow and it is built, tested on every scenario and kept running.
What the catalog holds today. Ask for anything missing and your agent reads the API documentation and adds it.
Build solutions, not workarounds.
What do you want Fillout Forms and Polar to do together?
Ask the assistant
Connect your AI client
Give your AI client this address.
https://mcp.apiant.aiOne connection does both: ask your client to act in an app once, or have it build an automation that keeps running. Any client that takes a remote MCP server. Nothing to install. Create your free account, then sign in once in your browser.
Set it up in your client
Claude Code
Run this in the directory you want to work in.
claude mcp add --transport http -s project apiant-ai https://mcp.apiant.aiStart Claude Code there, approve the server, and sign in in the browser page it opens.
Claude Code guide (opens in a new tab)Claude, web and desktop
Open Customize, then Connectors, then Add custom connector, and paste the address. On Team and Enterprise an owner adds it first.
Setup guide (opens in a new tab)Cursor
Add the address to your MCP configuration as a server URL. Cursor signs you in in your browser.
Setup guide (opens in a new tab)Zed
Open Settings, then AI, then MCP Servers, then Add Server, then Add Remote Server.
Setup guide (opens in a new tab)Codex and the ChatGPT desktop app
Open Settings, then MCP servers, then Add server, and choose Streamable HTTP. From the terminal, Codex takes the address with its own add command and then signs you in.
Setup guide (opens in a new tab)Any other MCP client
Paste the address where the client asks for a remote MCP server URL, and name the server apiant-ai where it lets you. APIANT's skills reach the client over the same connection.
Setup guide (opens in a new tab)Fillout Forms collects the answers, Polar handles the billing. Joining them means a form submission can look up or create the right Polar customer and open a checkout link, and events in Polar - a paid order, a canceled subscription - can be written back as submissions on a Fillout form you already use for onboarding or churn notes.
Example flows
What Fillout Forms and Polar can do together
From Fillout Forms to Polar
When New Submission in Fillout Forms
then Create Customer in Polar
From Polar to Fillout Forms
Starting points drawn from the triggers and actions in the catalog today. Describe the flow you need, at any depth, and your agent builds it and tests every scenario before it ships.
Everything your agent can do with Fillout Forms and Polar
Triggers and actions 22 triggers · 31 actions
- New Submission
Triggers when a form receives a new submission.
- Add Submission
Create a new submission on a form programmatically.
- Delete Submission
Delete a submission from a form by ID.
- Get Submission
Retrieve a single submission by ID for a given form.
- List Forms
Retrieve all forms in the account.
- List Submissions
Retrieve all submissions for a given form, with filtering/pagination.
- Benefit Created
Triggered when a new benefit is created in Polar.
- Benefit Updated
Triggered when a benefit is changed in Polar.
- Checkout Created
Triggered when a new checkout session is created in Polar.
- Checkout Expired
Triggered when a checkout session expires in Polar without being paid.
- Checkout Updated
Triggered when a checkout session changes in Polar, for example when it is confirmed or paid.
- Customer Created
Triggered when a new customer is created in Polar.
- Customer Deleted
Triggered when a customer is deleted in Polar.
- Customer State Changed
Triggered when a customer's state changes in Polar - their active subscriptions, granted benefits or meters.
- Customer Updated
Triggered when a customer's details change in Polar.
- Order Created
Triggers when a new order is placed in your Polar organization.
- Order Paid
Triggers when an order in your Polar organization is paid.
- Order Updated
Triggers when an order in your Polar organization changes.
- Product Created
Triggers when a new product is created in your Polar organization.
- Product Updated
Triggers when a product in your Polar organization changes.
- Subscription Active
Triggers when a subscription in your Polar organization becomes active.
- Subscription Canceled
Triggers when a customer cancels a subscription in your Polar organization.
- Subscription Created
Triggers when a new subscription is created in your Polar organization.
- Subscription Past Due
Triggers when a subscription in your Polar organization falls past due because a payment failed.
- Subscription Revoked
Triggers when a subscription in your Polar organization is revoked and the customer loses access.
- Subscription Uncanceled
Triggers when a customer reverses a pending cancellation and keeps a subscription in your Polar organization.
- Subscription Updated
Triggers when a subscription in your Polar organization changes.
- Add Subscription
Subscribes a customer to a free recurring product.
- Confirm Checkout Session
Completes an open checkout session so Polar creates the order. Works without payment only when the checkout needs none, for example a free product.
- Create Benefit
Creates a benefit in Polar that you can attach to products.
- Create Checkout Session
Creates a Polar checkout session for a product and returns the link the customer pays through.
- Create Customer
Creates a customer in Polar.
- Create Discount
Creates a discount in Polar, either a percentage off or a fixed amount off.
- Create Product
Creates a product in Polar with its price or prices.
- Delete Customer
Deletes a customer in Polar. Their subscriptions are cancelled and their benefits revoked.
- Get Checkout Session
Returns one Polar checkout session by its id, including its status and payment link.
- Get Customer
Returns one customer from Polar by their id, including any metadata you stored on them.
- Get Product
Returns one product from Polar by its id, with its prices and attached benefits.
- Get Subscription
Returns one subscription from Polar by its id, with its status, amount and current period.
- List Benefits
Returns a page of benefits from Polar.
- List Checkout Sessions
Returns a page of checkout sessions from Polar.
- List Customers
Returns a page of customers from Polar.
- List Discounts
Returns the discount codes set up in your Polar organization, newest first. You can narrow the list by organization or by name text, and page through the results.
- List Orders
Returns the orders placed in your Polar organization. You can narrow the list by product, customer, subscription, checkout, discount or status, and page through the results.
- List Products
Returns the products in your Polar organization, with their prices and benefits. You can narrow the list by name text, archived state, one-time versus subscription, or a benefit, and page through the results.
- List Subscriptions
Returns the subscriptions in your Polar organization. You can narrow the list by product, customer, discount, active state or status, and page through the results.
- Revoke Subscription
Cancels a Polar subscription immediately, ending the customer's access right away rather than at the end of the billing period.
- Update Benefit
Changes a benefit's description, visibility, settings or metadata.
- Update Checkout Session
Changes an open checkout session: buyer details, product, amount, metadata or redirect links.
- Update Customer
Updates an existing Polar customer. Only the fields you fill in are changed; anything left blank keeps its current value.
- Update Order
Changes the billing name or billing address shown on an order's invoice.
- Update Product
Updates an existing Polar product. Only the fields you fill in are changed; anything left blank keeps its current value.
- Update Subscription
Changes an existing Polar subscription — switch its product, apply a discount, adjust seats, move the trial end, or schedule or reverse a cancellation. Only the fields you fill in are changed.
No trigger or action matches that. Ask your agent to add it: it reads the API documentation and builds what you describe.
Each app on its own
Reviews
What our customers say
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Questions
Fillout Forms and Polar, answered
Can a Fillout form submission start a payment in Polar?
Yes. A New Submission in Fillout Forms can trigger Create Checkout Session in Polar for the product the person chose, and the checkout link comes back so you can send it on. You can also create or look up the Polar customer first.
Can Polar billing events write back into Fillout Forms?
Yes. Triggers such as Order Paid, Subscription Canceled or Subscription Active in Polar can run Add Submission on a Fillout form, so the record lands with your other responses. You can also use List Submissions or Get Submission to pull up what that person answered earlier.
What can start an automation from Fillout Forms?
Any of Fillout Forms's 1 trigger in the catalog, including New Submission. Describe the moment in plain language and your agent picks the right one.
What can your agent do in Polar when something happens in Fillout Forms?
Any of Polar's 26 actions, including Create Customer, Create Discount, Get Customer and Create Benefit. Your agent maps the data both ways and tests every scenario before it ships.
Can it also run from Polar to Fillout Forms?
Yes. When something happens in Polar, your agent can act in Fillout Forms too. This page covers both directions: Polar's triggers and Fillout Forms's actions are listed here as well.
Do I have to build a connector for Fillout Forms or Polar?
No. Both are in the catalog with their triggers and actions. You describe the automation; your agent builds it, tests every scenario and keeps it running.
Can my AI client use Fillout Forms and Polar without building an automation?
Yes. With your AI client connected to APIANT, ask it to do something in either app once and it runs that action on the spot. Ask for an automation and your agent builds it, tests every scenario and keeps it running. One connection covers both.
What happens when something fails?
Your agent works that out for you. It plans the failure paths along with the happy path, then tests every scenario before it ships.
Is there a free plan?
Yes. Every plan includes the agent, including free, and building from your own AI client spends no assistant credits.