io.usefulapiPublished by usefulapi.ioOfficial publisherv1.35.3Updated Nov 5, 2026
Hosted MCP server for Anvil — fill & generate PDFs and run Etch e-signature packets for AI agents.
The publisher's own server: Ably MCP by usefulapi
Hosted Anvil server that lets an assistant fill and generate PDFs and create Etch e-signature packets using your Anvil account.
Web executable via Streamable HTTP. Remote servers run from the web runtime once configured in a workspace.
Paste this prompt into Claude Code, Codex, Cursor or another agent — or into SourceWeft chat. The agent reads this server's install guide, shows you its publisher, endpoint and sign-in, and adds it to your client once you agree. Keys never go into a command.
Read https://sourceweft.com/mcp/io.usefulapi%2Fanvil/install.md and connect the MCP server it describes to my client. Before changing any config, show me its publisher, endpoint and sign-in method and wait for my OK. Never put an API key in a command or in a file I would commit; ask me where it should come from.Add this to your client's mcpServers config.
{
"mcpServers": {
"anvil-by-usefulapi": {
"type": "http",
"url": "https://anvil.usefulapi.io/mcp"
}
}
}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
https://anvil.usefulapi.io/mcp.claude mcp add --transport http anvil https://anvil.usefulapi.io/mcp, then run /mcp to log in.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.
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.
*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].
MIT — see LICENSE. Documentation only; the server is hosted.
Source: servers/anvil/README.md at commit 4046075
Current Anvil user
Get the authenticated Anvil user (from the API key) and the organizations they belong to (eid, name, slug). Good first call to discover org slugs/eids for other tools. GraphQL query: currentUser.
Takes no parameters.
Get organization
Fetch an Anvil organization and its PDF templates (casts) and workflows (welds). Provide either its slug or its eid (at least one is required). GraphQL query: organization.
eidslugGet cast (PDF template)
Fetch a cast — an Anvil PDF template — by its eid: title, version number, and whether it is a template. Use the returned eid as the cast_eid for anvil_fill_pdf. GraphQL query: cast.
eidrequiredGet Etch e-signature packet
Fetch an Etch e-signature packet by eid: its status, details URL, document group, and every signer (eid, aliasId, name, email, status, routing order). Use this to check signature progress. GraphQL query: etchPacket.
eidrequiredGet weld (workflow)
Fetch a weld — an Anvil workflow — by eid, including its forges (the individual form steps: eid, name, slug). GraphQL query: weld.
eidrequiredGet weld data (workflow submission)
Fetch a weldData record — a single submission to a weld (workflow) — by eid: completion state, test flag, and creation time. GraphQL query: weldData.
eidrequiredFill a PDF template
Fill an Anvil PDF template (cast) with data and return the finished PDF as base64. REST: POST /fill/{castEid}.pdf. Returns { filename, byteLength, pdfBase64 }. The `data` object's keys are the template's field aliases.
datarequiredtitlecast_eidrequiredfontSizetextColorGenerate a PDF from HTML or Markdown
Generate a brand-new PDF from HTML or Markdown and return it as base64. REST: POST /generate-pdf. For type=html, pass data = { html, css? }. For type=markdown, pass data = [ { label, content }, ... ]. Returns { filename, byteLength, pdfBase64 }.
datarequiredtypetitleCreate Etch e-signature packet
Create an Etch e-signature packet (documents + signers). GraphQL mutation: createEtchPacket. IMPORTANT: isDraft defaults to true (a safe draft that sends nothing). Setting isDraft=false with real signers SENDS signature-request emails to those signers. Use isTest=true while developing.
datanamerequiredfilesisTestisDraftsignerssignatureEmailBodysignatureEmailSubjectGenerate Etch signing URL
Generate a one-time embedded signing URL for a specific signer in an Etch packet (for iframe/redirect signing flows). GraphQL mutation: generateEtchSignURL. Returns { url }.
signer_eidrequiredclient_user_idrequired100% of the applicable checks met
How complete this listing is, computed from the registry entry, the endpoint and public sources. Not a rating of the server and not a statement that it is safe or working today: reachability is a dated check, and no installs or reviews go into the score.
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{ "mcpServers": { "anvil": { "url": "https://anvil.usefulapi.io/mcp" } }}