# Modisign (npm · @modisign/mcp)

Make animated overlays and edit short videos with Modisign. Everything renders on your computer.

- Trust score: 67/100 (medium)
- Registry status: active
- Liveness: live
- Owner verified: no
- Last scored: 2026-10-18

## Components

- npm · `@modisign/mcp`: 67/100 (this document), [markdown](https://verifymcp.io/servers/slvdev-modisign/modisign-mcp.md), [page](https://verifymcp.io/servers/slvdev-modisign/modisign-mcp)

## Channel facts

- Registry: `npm`
- Package: `@modisign/mcp`
- Version: `0.3.0`
- Transport: `stdio`

## Trust breakdown

How this component scores in each security and reliability category. Every signal is checked automatically from public evidence about the published package, including repeated runs of it in an isolated sandbox, 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 2026-10-18.

- **Supply Chain Security**: 99/100
  - No malware found by supply-chain analysis.
  - No known CVEs affecting this package version or its production dependencies.
  - No install/post-install scripts declared.
  - 15 of 131 dependencies flagged as unhealthy.
- **Provenance & Transparency**: 45/100
  - Source repository is publicly reachable at the declared URL.
  - Provenance check failed: no build-provenance attestation is published.
  - Clear OSI-approved license (MIT).
  - Actively maintained (last published 0 days ago).
  - Disclosure check failed: no security disclosure policy was found in the source repository.
- **Schema Quality & AI Usability**: 65/100
  - AI-judged instruction clarity (good).
  - Context-footprint check failed: tool/resource definitions use about 1257 tokens (~114/item across 11 items; 11 tools + 0 resources), over budget; trim descriptions and params.
  - Usage-examples check failed: none of the tools include examples.
- **Stability & Change Management**: 10/100
  - Stability observed for 3 of 30 days with no destabilising changes; credit accrues until the full window elapses.
- **Tool Coverage**: 69/100
  - 100% of tools have a non-trivial description (not blank, and not just the tool's name).
  - 6% of tool parameters carry a description.
- **Tool Safety**: 100/100
  - No prompt-injection markers were found in the server instructions, tool names or descriptions we captured.
  - We read all 11 captured tool definition(s), and no name or description among them implies an irreversible operation.
  - An AI judge read all 11 captured unit(s) of tool text and found none that tries to manipulate the model reading it.
- **Capabilities**: 100/100
  - Implements a current MCP spec version (2026-07-28).

## Install

### How do I install the Modisign MCP server?

Modisign runs locally as an npm package, launched with npx -y @modisign/mcp. Ready-made configuration for Claude, Cursor, VS Code, Codex and 5 more is on this page, copied from each client's own documentation.

### Claude

```bash
claude mcp add slvdev-modisign -- npx -y @modisign/mcp
```

### Cursor

```json
{
  "mcpServers": {
    "slvdev-modisign": {
      "command": "npx",
      "args": [
        "-y",
        "@modisign/mcp"
      ]
    }
  }
}
```

### VS Code

```json
{
  "servers": {
    "slvdev-modisign": {
      "command": "npx",
      "args": [
        "-y",
        "@modisign/mcp"
      ]
    }
  }
}
```

### Codex

```bash
codex mcp add slvdev-modisign -- npx -y @modisign/mcp
```

### opencode

```json
{
  "$schema": "https://opencode.ai/config.json",
  "mcp": {
    "slvdev-modisign": {
      "type": "local",
      "command": [
        "npx",
        "-y",
        "@modisign/mcp"
      ],
      "enabled": true
    }
  }
}
```

### OpenClaw

```bash
openclaw mcp add slvdev-modisign --command npx --arg -y --arg @modisign/mcp
```

### Hermes

```yaml
mcp_servers:
  slvdev-modisign:
    command: "npx"
    args: ["-y", "@modisign/mcp"]
```

### Netclaw

```json
{
  "McpServers": {
    "slvdev-modisign": {
      "Transport": "stdio",
      "Command": "npx",
      "Arguments": [
        "-y",
        "@modisign/mcp"
      ]
    }
  }
}
```

### Vellum

```bash
assistant mcp add slvdev-modisign -t stdio -c npx -a -y @modisign/mcp
```

### Other

```json
{
  "mcpServers": {
    "slvdev-modisign": {
      "command": "npx",
      "args": [
        "-y",
        "@modisign/mcp"
      ]
    }
  }
}
```

## 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.

### 2026-10-18 (score 67, +15)

- [security improvement] Malware scan: unverified → pass

### 2026-10-17 (score 52, −15)

- [security regression] Malware scan: pass → unverified
- [functional regression] Schema quality: pass → fail
- [functional] Package version: 0.2.0 → 0.3.0

### 2026-10-16 (score 67, +1)

- [security regression] Known CVEs: pass → unverified
- [security regression] Tool safety: pass → unverified
- [security] Stability: Stability not yet verified: we do not have a sandbox capture of the MCP schema this version of the package serves yet.
- [functional regression] Schema quality: 95 → 108
- [functional regression] Capabilities: pass → unverified
- [functional regression] Dependency health: 0.95 → unverified
- [functional regression] Tool coverage: 100 → unverified
- [functional improvement] Stability: unverified → 0.03
- [functional] Package version: 0.1.1 → 0.2.0

### 2026-10-15 (score 66, +27)

- [security improvement] Injection markers: unverified → pass
- [security] First check of Judged manipulation: pass
- [security] Stability: Stability not yet verified: not enough scan history yet (needs a 30-day window).
- [functional improvement] Tool coverage: unverified → 100
- [functional improvement] MCP protocol: unverified → pass
- [functional] First check of Schema quality: fail
- [functional] First check of Destructive annotations: pass
- [functional] First check of Tool coverage: 6
- [functional] First check of Schema quality: pass
- [functional] First check of Schema quality: good

### 2026-10-14 (score 39)

First indexed and scored.

## MCP tools (11)

### `list_overlays` (~80 tokens)

Find animated overlays by topic, family or niche. Returns compact preset choices and editor links. Reuse the same filters and pass the returned next_cursor as cursor for another page.

Input parameters:

- `cursor` (string)
- `family` (string)
- `free_only` (boolean)
- `niche` (string)
- `query` (string)

### `get_overlay` (~80 tokens)

Inspect an overlay preset's editable fields, types, allowed values and limits, looks, aspects, duration and free status before configuring it. Each field has relevant (the preset's layout and options use it now) and showWhen (the conditions under which it is used; absent means always).

Input parameters:

- `family` (string, required)
- `preset` (string, required)

### `configure_overlay` (~136 tokens)

Configure an animated overlay with editable values, look, aspect, duration or background. Returns its configuration URL, free/Pro tier, relevance (field ids the final configuration uses or does not) and inactiveEdits (requested values kept but unused by this layout, with a notice). Field errors list allowed inputs so you can correct and retry. Changes to free preset text generally need Pro to render.

Input parameters:

- `aspect` (string)
- `background` (string)
- `duration` (number)
- `family` (string, required)
- `look` (string)
- `preset` (string, required)
- `values` (object)

### `render_overlay` (~96 tokens)

Start a local animated overlay render and return job_id. MP4 uses green screen by default; MOV is transparent ProRes 4444; WebM is transparent VP9. Needs the user's FFmpeg. Free configurations need no login; others need Pro. Poll job_status for the file.

Input parameters:

- `configuration` (string, required): The relative configuration URL returned by configure_overlay.
- `format` (string)
- `output_dir` (string)

### `add_overlay_to_video` (~144 tokens)

Render an overlay transparently and composite it onto one local video (up to 60 seconds) at start_seconds. Automatically selects and reauthorizes the nearest supported aspect, returned as aspect. The start must fit the overlay within the video. Returns job_id; poll job_status. Produces H.264/AAC MP4 with audio, source aspect, long side capped at 1920. Local media never uploads. Use edit_video for longer or multi-clip edits.

Input parameters:

- `configuration` (string, required): The relative configuration URL returned by configure_overlay.
- `output_path` (string)
- `start_seconds` (number, required)
- `video_path` (string, required)

### `edit_video` (~404 tokens)

Create a local video with sequential v1 clips and nonoverlapping v2 clips above them. Every clip requires track; v2 requires start seconds, v1 forbids start. Crop uses source-edge percentages; place selects full, halves, corner picture-in-picture or a custom normalized box. Omitted crop/place mean zero crop/full. Supports trims, fill/fit, pan (0–1), zoom (1–3), photos, audio and source-second punch-ins. Up to 300 clips, maximum end 180 seconds. after_clip indexes the request array and must target v1; the incoming neighbor is the next v1, skipping v2. Transitions clamp to adjacent clip limits. Captions and pause detection use v1 only, even when muted. Removing pauses ripples both tracks and overlays; conflicting v1 transitions return an explicit error. Align sources manually; no automatic sync or drift correction. Example: put reference.mp4 on top muted, me.mp4 on the bottom, crop 5% off the sides, start together, Clean captions from my voice. Captions are made on your computer in English; optional corrections replace exact words/phrases. Specify caption style clean/boxed/minimal/karaoke/bold-keyword/word-pop/highlight-box/neon/pop-up/typewriter/outline/editorial/gradient, position upper/center/lower and size s/m/l. No overlays or unchanged free overlays with Clean/Boxed/Minimal captions export without login; other edits need Pro. 1080p default, 720p also free. Media never uploads; Studio exports never enter account history. Returns job_id; poll job_status.

Input parameters:

- `aspect` (string, required)
- `captions` (object)
- `clips` (array, required)
- `output_path` (string)
- `overlays` (array)
- `quality` (string)
- `remove_silences` (object)
- `transitions` (array)

### `get_transcript` (~128 tokens)

Transcribe English speech in one local video (up to 180 seconds) using an English speech model on your computer. Optional in/out trim seconds; returned line times are source seconds. The transcript text is returned to your assistant/provider, so call only when the user wants to review or correct it. Media and transcript are never sent to Modisign. First use downloads the speech model; later calls work offline. Use captions.corrections in edit_video to fix names/phrases.

Input parameters:

- `in` (number)
- `out` (number)
- `path` (string, required)

### `job_status` (~57 tokens)

Check a local video job's state and progress (0–1). A done job includes the local artifact path, MIME type, bytes, duration and any history warning. Jobs last for this server process.

Input parameters:

- `job_id` (string, required)

### `cancel_job` (~36 tokens)

Cancel a queued or running local video job and clean its temporary files. A completed artifact is retained.

Input parameters:

- `job_id` (string, required)

### `account_status` (~37 tokens)

Check whether Modisign is signed in and has current Pro access. Anonymous free overlays work without signing in. Returns sign-in instructions when needed.

### `login` (~59 tokens)

Start Modisign device sign-in. Show the returned verification URL and code to the user; they sign in with Google and explicitly approve. Polling continues in the background. Use account_status to check completion. This tool never opens a browser or returns credentials.

## Diagnostics

Captured diagnostic sections: Provenance, Dependencies. The full working is on the page: https://verifymcp.io/servers/slvdev-modisign/modisign-mcp#diagnostics

## Score history

- 2026-10-18: 67
- 2026-10-17: 52
- 2026-10-16: 67
- 2026-10-15: 66
- 2026-10-14: 39

## Common questions

### What is the Modisign MCP server?

Modisign is an MCP server listed in the public MCP registry as io.github.slvDev/modisign. Make animated overlays and edit short videos with Modisign. Everything renders on your computer. This page covers its npm package (@modisign/mcp).

### Is the Modisign MCP server safe to use?

Modisign scores 67 out of 100 on VerifyMCP. We found no known CVEs affecting it as of 18 October 2026. It declares no install or post-install scripts. That is a record of what we were able to check automatically, not an endorsement. The category breakdown on this page shows every signal behind the number, including the ones we could not confirm.

### What tools does the Modisign MCP server expose?

Modisign exposes 11 tools: list_overlays, get_overlay, configure_overlay, render_overlay, add_overlay_to_video, and 6 more. Their descriptions and schemas cost roughly 1,257 tokens of context every time the server is loaded.

### Is the Modisign MCP server still maintained?

Modisign is still listed as active in the MCP registry. We last reached this channel on 18 October 2026. Those dates come from our own scans of the registry and the channel itself, not from anything the publisher announced.

### What licence is the Modisign MCP server under?

Modisign declares the MIT licence, which is OSI-approved. That covers the source only, and says nothing about the cost of any service it calls.

## Links

- npm package: https://www.npmjs.com/package/@modisign/mcp
- Socket report: https://socket.dev/npm/package/@modisign/mcp
- Repository: https://github.com/slvDev/modisign-mcp
- Website: https://modisign.app/mcp
- Changelog RSS feed: https://verifymcp.io/servers/slvdev-modisign/modisign-mcp.xml
- Changelog JSON feed: https://verifymcp.io/servers/slvdev-modisign/modisign-mcp.json
- HTML version of this page: https://verifymcp.io/servers/slvdev-modisign/modisign-mcp