Klaviyo Forms (BYOK)

Klaviyo Forms (BYOK) — connector documentation

• MCP endpoint: https://byok-klaviyo-forms-webhooks.connectorbay.com/mcp
• REST API: POST https://byok-klaviyo-forms-webhooks.connectorbay.com/v1/tools/{tool_name}, described by the OpenAPI 3.1 spec at https://byok-klaviyo-forms-webhooks.connectorbay.com/openapi.json
• Transport: Streamable HTTP, stateless, MCP specification 2025-06-18 or later
• Authentication: your own Klaviyo Forms private API key (starts with pk_), sent in the X-Upstream-Key header of every request (never stored, logged or cached)
• Health: https://byok-klaviyo-forms-webhooks.connectorbay.com/health · Tool schemas: https://byok-klaviyo-forms-webhooks.connectorbay.com/tools.json
• Publisher: Unify Dynamics LLC · connectorbay.com/byok-klaviyo-forms-webhooks · agent@connectorbay.com

What Klaviyo Forms (BYOK) is for

Klaviyo Forms (BYOK) lets an AI assistant read your own Klaviyo Forms data through the Klaviyo Forms API with a key you supply (private API key (starts with pk_)). Read-only: 7 tools (list_forms, get_form, list_form_versions, get_form_version, list_webhooks, get_webhook, list_webhook_topics). The BYOK key travels with each request, is used for that one call only and is never stored, logged or cached; it is only ever sent to a.klaviyo.com. Unofficial connector by Unify Dynamics LLC: not affiliated with, endorsed by or sponsored by Klaviyo Forms. Klaviyo Forms and its logos are trademarks of their owners and are used only to say which service the connector works with.

Ask your assistant things like:

• "Which signup forms are live in Klaviyo?"
• "Is the Klaviyo footer signup form live?"
• "Which versions does my Klaviyo footer form have?"
• "What type of form is Klaviyo form version 9876?"
• "Which webhooks are enabled in my Klaviyo account?"
• "Is Klaviyo webhook W1 enabled?"

What it does

• list_forms: List signup forms with name, live or draft status, A/B test flag and dates, at most 100 per page. The form design is not returned. Needs the forms:read scope.
• get_form: Get one signup form by ID: name, status, A/B test flag and dates (the form design is not returned).
• list_form_versions: List the versions of one form (popup, embed, flyout, full page or banner) with variation name, status and dates, at most 100 per page.
• get_form_version: Get one form version by ID: type, variation name, status and dates (the design is not returned).
• list_webhooks: List webhook subscriptions with name, description, enabled flag and dates. The endpoint URL is not returned. Needs the webhooks:read scope.
• get_webhook: Get one webhook subscription by ID: name, description, enabled flag and dates (the endpoint URL is not returned).
• list_webhook_topics: List the event topics a webhook can subscribe to, such as event:klaviyo.sent_sms.

BYOK key

You bring your own Klaviyo Forms private API key (starts with pk_) (https://developers.klaviyo.com/en/docs/authenticate_). Your assistant sends it in the X-Upstream-Key header with each request. ConnectorBay uses it for that one call only: it is never stored, logged or cached, never shown in an answer, and it is only sent to a.klaviyo.com over https, with no redirects followed. Create a key with the fewest permissions the tools need (read-only if the provider offers it), and revoke it at the provider whenever you like.

Data sources

• https://developers.klaviyo.com/en/reference/get_forms (the API this connector calls, with a BYOK key)

Live from the Klaviyo Forms API (a.klaviyo.com) with a BYOK key; documentation: https://developers.klaviyo.com/en/reference/get_forms. Endpoints checked against that documentation on 2026-10-16.

What it is not

Unofficial connector by Unify Dynamics LLC: not affiliated with, endorsed by or sponsored by Klaviyo Forms. Klaviyo Forms and its logos are trademarks of their owners and are used only to say which service the connector works with. It is read-only: it never creates, changes, sends or deletes anything in your Klaviyo Forms account.

Built for: Worldwide. Languages: English.

Klaviyo Forms (BYOK) — Privacy Policy

Effective 24 October 2026. Unify Dynamics LLC ("we", "us"), Menlo Park, California.

What Klaviyo Forms (BYOK) is. Klaviyo Forms (BYOK) is a connector (an MCP server and REST API) that an AI assistant calls on your behalf to read your own Klaviyo Forms data: Read your Klaviyo signup forms and their versions, webhook subscriptions and the webhook topics you can subscribe to with your own private API key. You bring your own Klaviyo Forms private API key (starts with pk_); the assistant sends it to us with each request.

BYOK key. The key you supply is used to make the one Klaviyo Forms call you asked for. Our application does not store it, write it to a log, put it in a cache, or share it. It is sent only to a.klaviyo.com, over https, and is removed from any text we return to you or your assistant. We do not follow redirects with your key. If Klaviyo Forms rejects it, we say so without repeating it.

What we receive. The arguments of each tool call, the BYOK key (for that call only), the technical headers needed to serve the request (an IP address or a client identifier supplied by the assistant) and standard server logs. What Klaviyo Forms receives. The request we make on your behalf, including the key and the arguments, under Klaviyo Forms's own terms and privacy policy. Klaviyo Forms acts at your direction and is the only recipient of the data of your request besides our hosting provider.

What we return. The answer Klaviyo Forms gives for your request, trimmed to the fields the tool documents. We do not keep it: it is returned to your assistant and not stored, cached or used to train anything.

What we do not do. We do not build a profile, sell or share personal information, or keep your Klaviyo Forms data. Rate-limit counters (a client identifier and timestamps) are held in memory for at most 24 hours. Hosting access logs (IP addresses, request paths and status codes) are kept for up to 30 days for security and abuse prevention; our application adds no request headers or bodies to them.

Sub-processors. Klaviyo Forms (the API you call with a BYOK key, at your direction). Hosting: Vercel (United States regions).

Your rights. Because we store no personal data beyond short-lived logs, requests to access, correct or delete data are usually satisfied automatically; you can still contact agent@connectorbay.com and we will respond within 30 days. Revoke your key at Klaviyo Forms at any time to end all access.

Children. Klaviyo Forms (BYOK) is a general-audience service operated by the adult using the assistant, under Klaviyo Forms's own age rules.

Changes. We will post changes here with a new effective date.

Klaviyo Forms (BYOK) — Terms of Service

Effective 24 October 2026. These terms govern use of the Klaviyo Forms (BYOK) connector ("the Service") operated by Unify Dynamics LLC ("we", "us").

1. The Service. Klaviyo Forms (BYOK) provides: Read your Klaviyo signup forms and their versions, webhook subscriptions and the webhook topics you can subscribe to with your own private API key. It is accessed through an AI assistant or directly over MCP or HTTP, and is read-only.
2. Your own key, your own account. You must use your own Klaviyo Forms credentials and only access data you are allowed to access. Klaviyo Forms's terms apply to your use of Klaviyo Forms; you are responsible for complying with them, including any rate limits and permitted uses. Do not share a key you do not own.
3. Independent. Unofficial connector by Unify Dynamics LLC: not affiliated with, endorsed by or sponsored by Klaviyo Forms. Klaviyo Forms and its logos are trademarks of their owners and are used only to say which service the connector works with.
4. No advice, no guarantees. Output is the data Klaviyo Forms returns, lightly trimmed; it may be incomplete, delayed or changed by Klaviyo Forms. Check important facts at the source.
5. Read-only. The Service does not create, change, send or delete anything in your Klaviyo Forms account.
6. Acceptable use. Automated use within the published rate limits is welcome. Do not use the Service to access data you are not entitled to, to circumvent Klaviyo Forms's controls, or to attack any system.
7. Availability. The Service is provided "as is" without warranty. We may change, limit or discontinue it at any time; Klaviyo Forms may change or end its API at any time.
8. Data. Our Privacy Policy describes what we process. In short: the BYOK key is used for the one call and not stored or logged.
9. Pro keys. Optional ConnectorBay Pro API keys are issued at our discretion and are separate from your Klaviyo Forms key.
10. Liability. To the fullest extent permitted by law, Unify Dynamics LLC is not liable for any loss arising from use of or reliance on the Service, including any action Klaviyo Forms takes on your account. Our total liability is limited to US $100.
11. Governing law. California law; venue in San Mateo County, California.
12. Contact. Unify Dynamics LLC · agent@connectorbay.com · https://connectorbay.com/byok-klaviyo-forms-webhooks

Klaviyo Forms (BYOK) support

Email agent@connectorbay.com. We answer within two business days.

• MCP endpoint: https://byok-klaviyo-forms-webhooks.connectorbay.com/mcp
• REST API: https://byok-klaviyo-forms-webhooks.connectorbay.com/openapi.json
• Live status: https://byok-klaviyo-forms-webhooks.connectorbay.com/health

When you report a problem, include the question you asked your agent, roughly when, and which agent you used (for example Claude, ChatGPT or Gemini). Never send us passwords, account numbers or ID numbers. Klaviyo Forms (BYOK) never asks for them.