Set it upwithout a browser.

/llms.txt says what this is and which endpoint to call, ordered by symptom rather than by feature. The longer version is /llms-full.txt.

npx nintact init creates a form and prints the snippet. Auth is a device code approved by email, so an agent in a terminal never needs a browser session.

npx nintact init       # sign in, create a form, print the snippet
npx nintact messages   # what has come in, sorted

# already have a key? skip the sign-in entirely
NINTACT_API_KEY=nk_... npx nintact messages --json

check_deliverability works with no API key. What matters is that an agent can find out mid-build that a domain cannot deliver mail — asking for a signup before that point removes the chance to notice at all. It only reads public DNS.

curl "https://nintact.com/api/v1/check?domain=example.com"

# SPF / DKIM / DMARC / MX, a verdict, and a next_step

npx nintact-mcp exposes 32 tools: build and restyle forms, read the inbox, edit and approve drafts, register FAQ entries, connect Slack, hand the workspace to the client. Published to the MCP registry, so Claude Code and Cursor can install it by name.

claude mcp add nintact -- npx -y nintact-mcp

One API key, then plain HTTP. No SDK required.

curl https://nintact.com/api/v1/messages \
  -H "Authorization: Bearer nk_..."

curl -X POST https://nintact.com/api/v1/forms/design \
  -H "Authorization: Bearer nk_..." \
  -d '{"instruction":"quote request form for a renovation company"}'

forms

Create, update, duplicate, delete, AI design, logo

messages

List, read, change status, regenerate a draft

drafts

Edit and approve — approving is what sends

knowledge

FAQ entries

organization

Industry, contacts, Slack, handover

usage

Drafts this month against the limit

Failures come back with a next_step telling the caller what to do about it — so an agent can recover without re-reading the documentation.

Built the site for someone else? One call transfers the workspace to their email address. They become the owner, billing follows, and the embed code on the site does not change.

curl -X POST https://nintact.com/api/v1/organization/transfer \
  -H "Authorization: Bearer nk_..." \
  -d '{"email":"owner@client.com"}'