Anvil MCP by usefulapi

Anvil MCP by usefulapi

Fill and generate PDFs and run Etch e-signature packets from Claude, Cursor, or any MCP client. Hosted, no local install — connect with your Anvil API key.

Live endpoint: https://anvil.usefulapi.io/mcp · Homepage: https://usefulapi.io/anvil

Connect

• Claude (claude.ai, Desktop): open Customize → Connectors, click + Add → Add custom connector, and paste https://anvil.usefulapi.io/mcp.
• Claude Code: claude mcp add --transport http anvil https://anvil.usefulapi.io/mcp, then run /mcp to log in.
• VS Code: Add to VS Code.
• Cursor and other clients: add the URL as a remote MCP server:

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

Add only the URL. Do not add an Authorization header or an API key to the client config: the server signs you in with OAuth, and the login page asks for your Anvil credentials.

Step-by-step setup, where to find your credentials, and FAQ: https://usefulapi.io/anvil/

On first connect you'll paste your Anvil API key. It's validated, stored per-user, and scoped to you.

Tools

Tool	Type	What it does
anvil_current_user	read	Current Anvil user
anvil_get_organization	read	Get organization
anvil_get_cast	read	Get cast (PDF template)
anvil_get_etch_packet	read	Get Etch e-signature packet
anvil_get_weld	read	Get weld (workflow)
anvil_get_weld_data	read	Get weld data (workflow submission)
anvil_fill_pdf	write	Fill a PDF template
anvil_generate_pdf	write	Generate a PDF from HTML or Markdown
anvil_create_etch_packet	write	Create Etch e-signature packet
anvil_generate_etch_sign_url	write	Generate Etch signing URL
anvil_usage_status	meta	Usage status (free-tier meter)
anvil_request_feature	meta	Request a missing feature
anvil_upgrade	meta	Upgrade to Pro (unlimited*)
anvil_cancel_subscription	meta	Cancel the Pro subscription

read tools are read-only; write tools mutate data (clients should confirm them); meta tools report usage, manage your subscription or send a feature request.

Pricing

Plan	Price	Limit
Free	$0	50 tool calls / month
Pro	$9/mo or $90/yr (2 months free)	Unlimited*

*Pro has a fair use limit of 10,000 tool calls a month on this server. For more, write to [email protected].

Pro covers this server only. Subscribe with anvil_upgrade (it returns a Stripe Checkout link). Cancel any time with anvil_cancel_subscription: Pro continues to the end of the paid period, with no refund for the current period, and running anvil_upgrade before then undoes the cancel. Or write to [email protected].

License

MIT — see LICENSE. Documentation only; the server is hosted.