# io.usefulapi/anvil (remote · anvil.usefulapi.io)

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

- Trust score: 28/100 (low)
- Change this week: −41
- Registry status: active
- Liveness: live
- Owner verified: no
- Last scored: 2026-08-03

## Components

- remote · `anvil.usefulapi.io`: 28/100 (this document), [markdown](https://verifymcp.io/servers/io-usefulapi-anvil/anvil.md), [page](https://verifymcp.io/servers/io-usefulapi-anvil/anvil)

## Channel facts

- Endpoint: `https://anvil.usefulapi.io/mcp`
- Transports: `streamable-http`
- Auth: `none`
- Version: `1.0.1`

## Trust breakdown

How this component scores in each security and reliability category. Every signal is checked automatically against the live server, and we only credit what we can confirm. Scores are 0–100 per category. Scoring method: https://verifymcp.io/docs/scoring (what has changed: https://verifymcp.io/docs/scoring/changelog)

Scored 2026-08-03.

- **Endpoint Security**: 46/100
  - The endpoint's TLS certificate is valid, in date, and uses a strong key.
  - Authorisation not fully verified: no authorisation is required to connect, but we couldn't read the tool list to see what that exposes.
  - HTTPS not yet verified: we couldn't determine whether a plaintext access path exists.
  - HSTS check failed: the Strict-Transport-Security header is absent.
  - DNSSEC check failed: this domain isn't protected by DNSSEC.
- **Transport & Reachability**: 100/100
  - Verified streamable-http transport via a live MCP handshake.
- **Schema Quality & AI Usability**: 0/100
  - Schema not yet verified: we couldn't read the endpoint's schema.
- **Stability & Change Management**: 0/100
  - Stability not yet verified: not enough scan history yet (needs a 30-day window).
- **Tool Coverage**: 0/100
  - Tool coverage not yet verified: we couldn't read the endpoint's tools.
- **Capabilities**: 0/100
  - Capabilities not yet verified: we couldn't read the endpoint's capabilities.

**Unverified: 4 categories.** Categories scored 0 because we could not verify them: authentication we do not have, an unreachable endpoint, or not enough scan history. We only credit what we can confirm.

## Install

### Claude

```bash
claude mcp add --transport http io-usefulapi-anvil https://anvil.usefulapi.io/mcp
```

### Codex

```toml
[mcp_servers.io-usefulapi-anvil]
url = "https://anvil.usefulapi.io/mcp"
```

### opencode

```json
{
  "$schema": "https://opencode.ai/config.json",
  "mcp": {
    "io-usefulapi-anvil": {
      "type": "remote",
      "url": "https://anvil.usefulapi.io/mcp",
      "enabled": true
    }
  }
}
```

### OpenClaw

```bash
openclaw mcp add io-usefulapi-anvil --url https://anvil.usefulapi.io/mcp --transport streamable-http
```

### Hermes

```yaml
mcp_servers:
  io-usefulapi-anvil:
    url: "https://anvil.usefulapi.io/mcp"
```

### Other

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

The mcpServers block is a cross-client convention. Remote transports vary, so check your client's docs.

## Changelog

Every change recorded for this component, newest first. Days that predate change tracking, or that we cannot explain, say so: "we were watching and nothing happened" and "we were not watching" are different claims.

### 2026-08-03 (score 28, −42)

- [security regression] Endpoint reachability: reachable → not serving MCP
- [security regression] Stability: 0.20 → unverified
- [security regression] Authorization: fail → unverified
- [functional regression] Tool coverage: 100 → unverified
- [functional regression] Capabilities: fail → unverified

### 2026-08-02 (score 70, +42)

- [security regression] Authorization: unverified → fail
- [functional regression] MCP protocol: unverified → fail
- [functional improvement] Endpoint reachability: not serving MCP → reachable
- [functional improvement] Tool coverage: unverified → 100
- [functional improvement] Stability: unverified → 0.20

### 2026-08-01 (score 28, −44)

- [security regression] Endpoint reachability: reachable → not serving MCP
- [security regression] Stability: 0.13 → unverified
- [security regression] Authorization: pass → unverified
- [functional regression] Capabilities: fail → unverified
- [functional regression] Tool coverage: 100 → unverified

### 2026-07-31 (score 72, +3)

- [functional] We updated how we score, so this day's move reflects our rubric, not a change to the server

### 2026-07-30 (score 69, −2)

- [functional] We updated how we score, so this day's move reflects our rubric, not a change to the server

### 2026-07-29 (score 71, +1)

No change was recorded against any check on this day. Stability & Change Management went from 3 to 7. That category is still filling its 30-day observation window: 1 days of observed history at the previous scan, 2 at this one. The score rises as the window fills, whether or not the server changes.

### 2026-07-28 (score 70, +1)

- [functional improvement] Stability: unverified → 0.03

### 2026-07-27 (score 69, +57)

- [functional] We updated how we score, so this day's move reflects our rubric, not a change to the server

## MCP tools (10)

### `anvil_current_user` (~56 tokens)

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.

### `anvil_get_organization` (~84 tokens)

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.

Input parameters:

- `eid` (string): Organization eid. Provide this OR slug.
- `slug` (string): Organization slug (from anvil_current_user). Provide this OR eid.

### `anvil_get_cast` (~71 tokens)

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.

Input parameters:

- `eid` (string, required): The cast (PDF template) eid.

### `anvil_get_etch_packet` (~86 tokens)

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.

Input parameters:

- `eid` (string, required): The Etch packet eid (returned by anvil_create_etch_packet).

### `anvil_get_weld` (~58 tokens)

Get weld (workflow)

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

Input parameters:

- `eid` (string, required): The weld (workflow) eid.

### `anvil_get_weld_data` (~63 tokens)

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.

Input parameters:

- `eid` (string, required): The weldData (workflow submission) eid.

### `anvil_fill_pdf` (~182 tokens)

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.

Input parameters:

- `cast_eid` (string, required): The cast (PDF template) eid to fill (from anvil_get_cast).
- `data` (object, required): Object mapping the template's field aliases to values, e.g. { "name": "Sam", "date": "2026-07-16" }.
- `fontSize` (number): Optional default font size for filled text.
- `textColor` (string): Optional default text color as a hex string, e.g. #333333.
- `title` (string): Optional title embedded in the generated PDF metadata.

### `anvil_generate_pdf` (~147 tokens)

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 }.

Input parameters:

- `data` (required): For html: { html: "<h1>Hi</h1>", css?: "..." }. For markdown: [ { label: "Section", content: "# Title\n..." }, ... ].
- `title` (string): Optional title embedded in the generated PDF metadata.
- `type` (string): Source format. Default html.

### `anvil_create_etch_packet` (~255 tokens)

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.

Input parameters:

- `data` (object): Optional payload data used to pre-fill the packet's documents.
- `files` (array): Array of file/document objects (casts or uploads) to include. Passed straight through to Anvil.
- `isDraft` (boolean): Default true. When true, creates a draft and sends nothing. Set false to activate and email signers.
- `isTest` (boolean): Set true to create a test packet (no legal weight, no charge).
- `name` (string, required): Human-readable name for the packet.
- `signatureEmailBody` (string): Optional body text for the signature-request email.
- `signatureEmailSubject` (string): Optional subject line for the signature-request email.
- `signers` (array): Array of signer objects, e.g. [{ id, name, email, signerType, routingOrder, fields }]. Passed straight through to Anvil.

### `anvil_generate_etch_sign_url` (~98 tokens)

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 }.

Input parameters:

- `client_user_id` (string, required): Your app's stable id for the signing user (ties the session to your user).
- `signer_eid` (string, required): The signer eid (from the packet's documentGroup.signers).

## Diagnostics

Captured diagnostic sections: TLS, DNSSEC, Authorisation, Transports. The full working is on the page: https://verifymcp.io/servers/io-usefulapi-anvil/anvil#diagnostics

## Score history

- 2026-08-03: 28
- 2026-08-02: 70
- 2026-08-01: 28
- 2026-07-31: 72
- 2026-07-30: 69
- 2026-07-29: 71
- 2026-07-28: 70
- 2026-07-27: 69
- 2026-07-26: 12

## Links

- Remote endpoint: https://anvil.usefulapi.io/mcp
- Repository: https://github.com/m190/usefulapi-mcp
- Changelog RSS feed: https://verifymcp.io/servers/io-usefulapi-anvil/anvil/changelog.xml
- Changelog JSON feed: https://verifymcp.io/servers/io-usefulapi-anvil/anvil/changelog.json
- HTML version of this page: https://verifymcp.io/servers/io-usefulapi-anvil/anvil