usefulapi

Fillout MCP server. Read Fillout forms and submissions, export responses, and create submissions and webhooks.

Claude

Open Settings → Connectors → Add custom connector
Paste this URL:
https://fillout.usefulapi.io/mcp
Authenticate with Fillout when prompted

Cursor · VS Code · Windsurf · Cline

Add to your MCP config, then reload & authorize:

{
  "mcpServers": {
    "fillout": {
      "url": "https://fillout.usefulapi.io/mcp"
    }
  }
}

live11 toolsFree 100 tool calls / monthPro $9/mo · $90/yr

Tools 11

Tool	Type	What it does
`fillout_list_forms`	read	List forms List every form in the Fillout account — each form's name and formId. Start here to find the formId the other tools need. Fillout: GET /forms.
`fillout_get_form`	read	Get form questions and metadata Fetch one form's metadata: every question (id, name, type), calculations, URL parameters, scheduling and payment fields, and quiz settings. Use the question ids to read answers or to create submissions. Fillout: GET /forms/{formId}.
`fillout_list_submissions`	read	List submissions List one page of a form's submissions (answers to every question, calculations, URL parameters, scheduling, payments, quiz score, login email), filtered by date range, status or free-text search. Offset pagination: the response carries totalResponses and pageCount. Fillout: GET /forms/{formId}/submissions.
`fillout_get_submission`	read	Get one submission Fetch a single submission by id, with every answer. Fillout: GET /forms/{formId}/submissions/{submissionId}.
`fillout_count_submissions`	read	Count submissions Count a form's submissions matching the same filters as fillout_list_submissions (date range, status, search) without pulling the answers — e.g. 'how many responses this week?' or 'how many partial submissions?'. Reads totalResponses from GET /forms/{formId}/submissions with limit=1.
`fillout_export_submissions`	read	Export submissions Fetch many submissions in one call by walking the offset pagination (150 per page, paced under Fillout's 5 requests/second limit), up to max_submissions. Same filters as fillout_list_submissions. Use this for analysis across a whole response set; the result says whether it was truncated. Fillout: GET /forms/{formId}/submissions (repeated).
`fillout_create_submissions`	write	Create submissions Create up to 10 new submissions on a form, as if respondents had filled it in — e.g. to import responses collected elsewhere. Each submission needs its question answers (question ids from fillout_get_form); URL parameters, scheduling, payments, login email and timestamps are optional. Creates real records that trigger the form's integrations. Fillout: POST /forms/{formId}/submissions.
`fillout_create_webhook`	write	Create a submission webhook Subscribe a URL to a form's new submissions: Fillout will POST each submission (same shape as a fillout_list_submissions entry) to it. Returns the webhook id — keep it, it is the only handle for removing the webhook later. Fillout: POST /webhook/create.
`fillout_remove_webhook`	write	Remove a submission webhook Stop a webhook from receiving submissions. Recoverable: create it again with fillout_create_webhook (it gets a new id). Fillout: POST /webhook/delete.
`fillout_usage_status`	meta	Usage status (free-tier meter) Report the caller's current free-tier usage this month: calls used, monthly limit, remaining, and whether the cap is reached. Read-only; does not count against the meter.
`fillout_upgrade`	meta	Upgrade to Pro (unlimited) Subscribe to the Pro plan for UNLIMITED Fillout tool calls (the free tier caps monthly usage). Choose monthly ($9/month) or yearly ($90/year — 2 months free) billing. Returns a Stripe Checkout link to open in your browser; after payment your account upgrades automatically. Read-only; does not count against the meter.

Pricing

Plan	Price	Limit
Free	$0	100 tool calls / month
Proper user	$9/mo · $90/yr	Unlimited

This is a Model Context Protocol endpoint — meant to be connected from an AI client, not opened in a browser. An invalid_token response at the URL is the auth gate working as designed; clients authenticate automatically.