Formstack (BYOK)

Formstack (BYOK) — connector documentation

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

What Formstack (BYOK) is for

Formstack (BYOK) lets an AI assistant read your own Formstack data through the Formstack API with a key you supply (Formstack personal access token (starts with fs_pat_)). Read-only: 7 tools (list_forms, get_form, list_form_fields, list_form_submissions, get_submission_status, list_folders, list_portals). 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 www.formstack.com. Unofficial connector by Unify Dynamics LLC: not affiliated with, endorsed by or sponsored by Formstack. Formstack 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 Formstack forms do I have and how many submissions does each have?"
• "Show details of Formstack form 1234567"
• "What fields does Formstack form 1234567 have?"
• "When did Formstack form 1234567 last get a submission?"
• "What is the approval status of Formstack submission 987654321?"
• "What folders do I have in Formstack?"

What it does

• list_forms: List the forms of your Formstack account with submission counts, unread counts, folder, active flag and dates. Supports name search and folder filter.
• get_form: Get one Formstack form: name, URL, counts of submissions today and in total, settings such as time zone and active state.
• list_form_fields: List the fields of a Formstack form with label, type, required flag, hidden flag, order and choice options.
• list_form_submissions: List submissions of one Formstack form (id, time, display name) newest or oldest first. Does not return the answers themselves. Can filter by time window or keyword.
• get_submission_status: Get status of one Formstack submission: time, form id, payment status, approval status and workflow steps. Answers are not returned.
• list_folders: List the folders (and subfolders) that organize your Formstack forms.
• list_portals: List the Formstack portals of your account with name, description, time zone and creation date.

BYOK key

You bring your own Formstack Formstack personal access token (starts with fs_pat_) (https://help.formstack.com/s/article/Formstack-Personal-Access-Tokens). 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 www.formstack.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.formstack.com/reference/api-overview (the API this connector calls, with a BYOK key)

Live from the Formstack API (www.formstack.com) with a BYOK key; documentation: https://developers.formstack.com/reference/api-overview. 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 Formstack. Formstack 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 Formstack account.

Built for: Worldwide. Languages: English.

Formstack (BYOK) — Privacy Policy

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

What Formstack (BYOK) is. Formstack (BYOK) is a connector (an MCP server and REST API) that an AI assistant calls on your behalf to read your own Formstack data: Read your Formstack forms, fields, folders, portals and submission activity with your own personal access token. You bring your own Formstack Formstack personal access token (starts with fs_pat_); the assistant sends it to us with each request.

BYOK key. The key you supply is used to make the one Formstack 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 www.formstack.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 Formstack 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 Formstack receives. The request we make on your behalf, including the key and the arguments, under Formstack's own terms and privacy policy. Formstack acts at your direction and is the only recipient of the data of your request besides our hosting provider.

What we return. The answer Formstack 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 Formstack 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. Formstack (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 Formstack at any time to end all access.

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

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

Formstack (BYOK) — Terms of Service

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

1. The Service. Formstack (BYOK) provides: Read your Formstack forms, fields, folders, portals and submission activity with your own personal access token. 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 Formstack credentials and only access data you are allowed to access. Formstack's terms apply to your use of Formstack; 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 Formstack. Formstack 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 Formstack returns, lightly trimmed; it may be incomplete, delayed or changed by Formstack. Check important facts at the source.
5. Read-only. The Service does not create, change, send or delete anything in your Formstack 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 Formstack'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; Formstack 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 Formstack 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 Formstack 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-formstack

Formstack (BYOK) support

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

• MCP endpoint: https://byok-formstack.connectorbay.com/mcp
• REST API: https://byok-formstack.connectorbay.com/openapi.json
• Live status: https://byok-formstack.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. Formstack (BYOK) never asks for them.