# PreviewDrop (npm · previewdrop)

Deploy any Git branch to a live HTTPS preview URL from your agent. No Dockerfile required.

- Trust score: 64/100 (medium)
- Registry status: active
- Liveness: live
- Owner verified: no
- Last scored: 2026-09-20

## Components

- npm · `previewdrop`: 64/100 (this document), [markdown](https://verifymcp.io/servers/dev-previewdrop-cli/previewdrop.md), [page](https://verifymcp.io/servers/dev-previewdrop-cli/previewdrop)

## Channel facts

- Registry: `npm`
- Package: `previewdrop`
- Version: `0.1.13`
- 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 2026-09-20.

- **Supply Chain Security**: 98/100
  - No malware found by supply-chain analysis.
  - No known CVEs affecting this package version or its production dependencies.
  - No install/post-install scripts declared.
  - 47 of 170 dependencies flagged as unhealthy (1 deprecated).
- **Provenance & Transparency**: 19/100
  - Repository check failed: no source repository is declared.
  - Provenance check failed: no build-provenance attestation is published.
  - Clear OSI-approved license (MIT).
  - Actively maintained (last published 3 days ago).
  - Security-disclosure policy not yet verified: we couldn't inspect the source repository.
- **Schema Quality & AI Usability**: 80/100
  - AI-judged instruction clarity (excellent).
  - Tool/resource definitions use about 1072 tokens (~76/item across 14 items; 14 tools + 0 resources), lean.
  - Usage-examples check failed: none of the tools include examples.
- **Stability & Change Management**: 0/100
  - Stability not yet verified: not enough scan history yet (needs a 30-day window).
- **Tool Coverage**: 100/100
  - 100% of tools have a non-trivial description (not blank, and not just the tool's name).
  - 100% of tool parameters carry a description.
- **Tool Safety**: 75/100
  - No prompt-injection markers were found in the server instructions, tool names or descriptions we captured.
  - 0 of 4 tool(s) whose name or description implies an irreversible operation declare an MCP destructiveHint annotation; "deploy" implies "deploy" and declares no destructiveHint at all, which the MCP spec reads as destructive by default.
  - An AI judge read all 15 captured unit(s) of tool text and found none that tries to manipulate the model reading it.
- **Capabilities**: 100/100
  - Implements a supported MCP spec version (2025-11-25); the latest is 2026-07-28.

**Unverified: 1 category.** A category scored 0 because we could not verify it: a data source with nothing on this package, evidence we could not reach, or a check we could not run. We only credit what we can confirm.

## Install

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

PreviewDrop runs locally as an npm package, launched with npx -y previewdrop. 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 dev-previewdrop-cli -- npx -y previewdrop
```

### Cursor

```json
{
  "mcpServers": {
    "dev-previewdrop-cli": {
      "command": "npx",
      "args": [
        "-y",
        "previewdrop"
      ]
    }
  }
}
```

### VS Code

```json
{
  "servers": {
    "dev-previewdrop-cli": {
      "command": "npx",
      "args": [
        "-y",
        "previewdrop"
      ]
    }
  }
}
```

### Codex

```bash
codex mcp add dev-previewdrop-cli -- npx -y previewdrop
```

### opencode

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

### OpenClaw

```bash
openclaw mcp add dev-previewdrop-cli --command npx --arg -y --arg previewdrop
```

### Hermes

```yaml
mcp_servers:
  dev-previewdrop-cli:
    command: "npx"
    args: ["-y", "previewdrop"]
```

### Netclaw

```json
{
  "McpServers": {
    "dev-previewdrop-cli": {
      "Transport": "stdio",
      "Command": "npx",
      "Arguments": [
        "-y",
        "previewdrop"
      ]
    }
  }
}
```

### Vellum

```bash
assistant mcp add dev-previewdrop-cli -t stdio -c npx -a -y previewdrop
```

### Other

```json
{
  "mcpServers": {
    "dev-previewdrop-cli": {
      "command": "npx",
      "args": [
        "-y",
        "previewdrop"
      ]
    }
  }
}
```

## 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.

### 2026-09-16 (score 64)

First indexed and scored.

## MCP tools (14)

### `get_account` (~23 tokens)

Get the authenticated PreviewDrop account info (email, plan, tenant name)

### `list_projects` (~17 tokens)

List all PreviewDrop projects in the account

### `list_deployments` (~70 tokens)

List deployments, optionally filtered by project, branch, or status

Input parameters:

- `branch` (string): Filter by branch name
- `projectId` (string): Filter by project ID
- `status` (string): Filter by status: queued | building | deploying | ready | failed | stopped | expired

### `get_deployment` (~27 tokens)

Get details of a specific deployment by ID

Input parameters:

- `id` (string, required): Deployment ID

### `deploy` (~65 tokens)

Trigger a new preview deployment for a project

Input parameters:

- `branch` (string): Branch to deploy (defaults to project default branch)
- `projectId` (string, required): Project ID to deploy
- `wait` (boolean): Poll until the deployment reaches a terminal state (up to 5 min)

### `destroy_deployment` (~28 tokens)

Stop and destroy a deployment by ID

Input parameters:

- `id` (string, required): Deployment ID to destroy

### `redeploy` (~33 tokens)

Redeploy an existing deployment by ID (same project + branch)

Input parameters:

- `id` (string, required): Deployment ID to redeploy

### `get_build_logs` (~54 tokens)

Fetch build logs (nixpacks / Dockerfile output) for a deployment

Input parameters:

- `id` (string, required): Deployment ID
- `tail` (number): Number of lines from the end to return (default: 100)

### `get_runtime_logs` (~51 tokens)

Fetch runtime (container stdout/stderr) logs for a deployment

Input parameters:

- `id` (string, required): Deployment ID
- `tail` (number): Number of lines from the end to return (default: 100)

### `create_project` (~143 tokens)

Add a repository as a PreviewDrop project. GitHub (default) needs the GitHub App installed on the repo owner's account — if not, use get_github_app_install_url first. GitLab and Bitbucket need the provider connected once in the dashboard under Settings → Integrations.

Input parameters:

- `defaultBranch` (string): Default branch to watch (defaults to main)
- `gitProvider` (string): Git host of the repository (default: github)
- `githubRepo` (string, required): Repository path, e.g. acme/my-api (GitLab subgroups allowed: group/subgroup/project)
- `name` (string): Project display name (defaults to the repo name)

### `get_github_app_install_url` (~45 tokens)

Returns the GitHub URL where the user must install the PreviewDrop GitHub App. Call this when create_project returns a 403 about the App not being installed.

### `get_project_env_vars` (~51 tokens)

Get the environment variable keys configured for a project. Values are masked (shown as ***) — use this to see what vars are set without exposing secrets.

Input parameters:

- `projectId` (string, required): Project ID

### `set_project_env_vars` (~68 tokens)

Merge environment variables into a project. Existing vars not in the payload are kept. Values are encrypted at rest.

Input parameters:

- `envVars` (object, required): Key-value pairs to set (e.g. { "DATABASE_URL": "postgres://..." })
- `projectId` (string, required): Project ID

### `deploy_repo` (~223 tokens)

PRIMARY TOOL — call this immediately for any "preview", "deploy", "get a URL", or "share my project" request. Do NOT read project files or try to run the project locally first. Before calling: (1) run `git remote get-url origin` to get the repo URL and extract owner/repo, (2) run `git rev-parse --abbrev-ref HEAD` for the current branch. This tool auto-creates the project if needed, builds the branch, waits up to 5 minutes, and returns the live HTTPS URL.

Input parameters:

- `branch` (string): Branch to deploy. Defaults to the project default branch (usually main).
- `gitProvider` (string): Git host of the repository (default: github). Derive it from the origin URL host.
- `githubRepo` (string, required): Repository path, e.g. acme/quick-invoice (owner/repo; GitLab subgroups allowed)
- `projectName` (string): Display name for the project if it needs to be created (defaults to the repo name).

## Diagnostics

Captured diagnostic sections: Provenance, Dependencies. The full working is on the page: https://verifymcp.io/servers/dev-previewdrop-cli/previewdrop#diagnostics

## Score history

- 2026-09-20: 64
- 2026-09-19: 64
- 2026-09-18: 64
- 2026-09-17: 64
- 2026-09-16: 64

## Common questions

### What is the PreviewDrop MCP server?

PreviewDrop is an MCP server listed in the public MCP registry as dev.previewdrop/cli. Deploy any Git branch to a live HTTPS preview URL from your agent. No Dockerfile required. This page covers its npm package (previewdrop).

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

PreviewDrop scores 64 out of 100 on VerifyMCP. We found no known CVEs affecting it as of 20 September 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 PreviewDrop MCP server expose?

PreviewDrop exposes 14 tools: get_account, list_projects, list_deployments, get_deployment, deploy, and 9 more. Their descriptions and schemas cost roughly 898 tokens of context every time the server is loaded.

### Is the PreviewDrop MCP server still maintained?

PreviewDrop is still listed as active in the MCP registry. We last reached this channel on 20 September 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 PreviewDrop MCP server under?

PreviewDrop 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/previewdrop
- Socket report: https://socket.dev/npm/package/previewdrop
- Website: https://previewdrop.dev/
- Changelog RSS feed: https://verifymcp.io/servers/dev-previewdrop-cli/previewdrop.xml
- Changelog JSON feed: https://verifymcp.io/servers/dev-previewdrop-cli/previewdrop.json
- HTML version of this page: https://verifymcp.io/servers/dev-previewdrop-cli/previewdrop