Anvil MCP by usefulapi

io.usefulapi由 usefulapi.io 发布官方发布者v1.36.5更新于 Nov 8, 2026

Hosted MCP server for Anvil — fill & generate PDFs and run Etch e-signature packets for AI agents.

发布方自己的服务：Ably MCP by usefulapi

已验证Streamable HTTP可网页运行效率与工作流文件与存储商业与电商

服务详情

标识符: io.usefulapi/anvil
传输: Streamable HTTP
运行时: Web executable
信任: Verified
发布于: Sep 16, 2026

安全提示

MCP 服务会接收对话中的工具调用请求，并可能执行外部操作。启用前请先了解该服务能做什么，并只授予它所需的权限。

注册中心已验证此服务的命名空间属于 usefulapi.io，且该域名同时运行其端点。这可以确认发布者，但并不代表该服务的工具是安全的。

SourceWeft 的检查只涵盖条目是否完整、端点是否响应；不审查服务器的代码，也不审查其工具的行为。

在 README 中添加徽章

向读者展示该 MCP 服务已收录于 SourceWeft，徽章链接到本页。

[![Listed on SourceWeft](https://sourceweft.com/badge/mcp/io.usefulapi%2Fanvil.svg)](https://sourceweft.com/mcp/io.usefulapi%2Fanvil?utm_source=readme&utm_medium=badge)

概览

AI 生成的概览

托管式 Anvil 服务器，让助手使用你的 Anvil 账户填写和生成 PDF，并创建 Etch 电子签名包。

可以做什么: 查询当前登录的 Anvil 用户及其所属组织
读取组织、PDF 模板（cast）、工作流（weld）和工作流提交记录
用字段数据填写 PDF 模板，并以 base64 返回成品 PDF
根据 HTML 或 Markdown 生成新的 PDF
创建 Etch 电子签名包并生成一次性内嵌签名链接
查看用量、提交功能请求、升级或取消订阅
适用场景: 适合希望助手在对话中直接产出填写或生成的 PDF，并驱动 Anvil 电子签名流程的场景，例如发票、入职表单或签名进度跟踪。适合已在使用 Anvil、想要托管连接而非本地安装的团队。
运行要求: 需要远程 MCP 端点，无需本地安装。登录使用 OAuth，登录页会要求填写 Anvil API 密钥，密钥经校验后按用户存储。客户端配置中只添加端点 URL，不要添加 Authorization 头或 API 密钥。免费方案每月 50 次工具调用，另有付费方案。

安装前请注意

写入类工具会改动 Anvil 数据：填写和生成 PDF、创建电子签名包和签名链接。以 isDraft=false 和真实签署人创建签名包会向签署人发送签名请求邮件，开发时宜用草稿和测试模式。服务器在登录时索取 Anvil API 密钥。元工具可发起 Stripe 付费结账或取消订阅，且取消后当期不退款。

安装

在 SourceWeft 中

打开控制台中的 Anvil MCP by usefulapi，将其添加到工作区。
为需要使用其工具的对话启用该服务。

Web executable，通过 Streamable HTTP。远程服务在工作区中配置后即可从网页运行时运行。

交给智能体安装

把这段提示词粘贴到 Claude Code、Codex、Cursor 等智能体，或 SourceWeft 对话中。智能体会读取该服务器的安装指南，先向你展示发布者、端点和登录方式，经你同意后再把它添加到你的客户端。密钥不会写进任何命令。

阅读 https://sourceweft.com/mcp/io.usefulapi%2Fanvil/install.md，并按其中说明把这个 MCP 服务器接入我的客户端。修改任何配置之前，先告诉我它的发布者、端点和登录方式，等我确认。不要把 API 密钥写进命令或我会提交的文件；问我密钥应从哪里获取。

查看智能体所依据的安装指南

其他 MCP 客户端

把它添加到你客户端的 mcpServers 配置中。

{
  "mcpServers": {
    "anvil-by-usefulapi": {
      "type": "http",
      "url": "https://anvil.usefulapi.io/mcp"
    }
  }
}

README

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:

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 or Pro+
`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

*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.

来源：servers/anvil/README.md，提交 4046075

工具

anvil_current_user

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.

无需输入参数。

anvil_get_organization

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.

输入参数eidslug

anvil_get_cast

Get 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.

输入参数eid必填

anvil_get_etch_packet

Get 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.

输入参数eid必填

anvil_get_weld

Get weld (workflow)

Fetch a weld — an Anvil workflow — by eid, including its forges (the individual form steps: eid, name, slug). GraphQL query: weld.

输入参数eid必填

anvil_get_weld_data

Get 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.

输入参数eid必填

anvil_fill_pdf

Fill 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.

输入参数data必填titlecast_eid必填fontSizetextColor

anvil_generate_pdf

Generate 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 }.

输入参数data必填typetitle

anvil_create_etch_packet

Create 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.

输入参数dataname必填filesisTestisDraftsignerssignatureEmailBodysignatureEmailSubject

anvil_generate_etch_sign_url

Generate 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 }.

输入参数signer_eid必填client_user_id必填