# io.github.richelo/isitdisposable-mcp (npm · isitdisposable-mcp)

An MCP server that lets AI agents check whether an email address or domain is disposable.

- Trust score: 66/100 (medium)
- Registry status: active
- Liveness: live
- Owner verified: no
- Last scored: 2026-08-07

## Components

- npm · `isitdisposable-mcp`: 66/100 (this document), [markdown](https://verifymcp.io/servers/richelo-isitdisposable-mcp/isitdisposable-mcp.md), [page](https://verifymcp.io/servers/richelo-isitdisposable-mcp/isitdisposable-mcp)

## Channel facts

- Registry: `npm`
- Package: `isitdisposable-mcp`
- Version: `0.1.1`
- 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 2026-08-07.

- **Supply Chain Security**: 96/100
  - No malware found by supply-chain analysis.
  - Known CVEs were checked across the 94 of 98 dependencies we could resolve, so this covers what we could see, not the whole tree.
  - No install/post-install scripts declared.
  - Dependency health was assessed across the 94 of 98 dependencies we could resolve, so this covers what we could see, not the whole tree.
- **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 1 days ago).
  - Disclosure check failed: no security disclosure policy was found in the source repository.
- **Schema Quality & AI Usability**: 67/100
  - AI-judged instruction clarity (excellent).
  - Context-footprint check failed: tool/resource definitions use about 907 tokens (~302/item across 3 items; 3 tools + 0 resources), over budget; trim descriptions and params.
  - 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.
- **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

### Claude

```bash
claude mcp add richelo-isitdisposable-mcp -- npx -y isitdisposable-mcp
```

### Codex

```bash
codex mcp add richelo-isitdisposable-mcp -- npx -y isitdisposable-mcp
```

### opencode

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

### OpenClaw

```bash
openclaw mcp add richelo-isitdisposable-mcp --command npx --arg -y --arg isitdisposable-mcp
```

### Hermes

```yaml
mcp_servers:
  richelo-isitdisposable-mcp:
    command: "npx"
    args: ["-y", "isitdisposable-mcp"]
```

### Other

```json
{
  "mcpServers": {
    "richelo-isitdisposable-mcp": {
      "command": "npx",
      "args": [
        "-y",
        "isitdisposable-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.

### 2026-08-06 (score 66, +38)

- [security improvement] Known CVEs: unverified → partial
- [security] Stability: Stability not yet verified: not enough scan history yet (needs a 30-day window).
- [functional improvement] Tool coverage: unverified → 100
- [functional improvement] Dependency health: unverified → partial
- [functional improvement] MCP protocol: unverified → pass
- [functional] First check of Schema quality: fail
- [functional] First check of Tool coverage: 100
- [functional] First check of Schema quality: fail
- [functional] First check of Schema quality: excellent

### 2026-08-05 (score 28)

First indexed and scored.

## MCP tools (3)

### `check_email` (~270 tokens)

Check email for disposable

Checks a single email address to see whether it is disposable. A disposable address is a throwaway or temporary inbox (for example from a burner mail service) that someone uses to receive a single signup message and evade normal registration requirements, rather than a real, ongoing mailbox. In the response, `disposable` is the core true or false verdict. `action` is the recommended handling: `allow`, `warn`, or `block`, based on the caller's own account policy. Extra opt in signals may also be present: `mx_valid` (whether the domain's mail servers accept mail at all), `relay` (a forwarding or catch all style address rather than a dedicated inbox), `public_domain` (a well known free provider such as Gmail or Outlook), and `did_you_mean` (a likely intended domain when the one given looks like a typo). This tool always fails open: if a network problem, timeout, rate limit, or server error prevents a real check, the call still succeeds and returns `checked` false with `action` allow, plus a `note` explaining the check could not be completed. Treat that outcome as inconclusive, never as evidence the address is safe.

Input parameters:

- `email` (string, required): The full email address to check, for example someone@example.com.

### `check_domain` (~294 tokens)

Check domain for disposable

Checks a single bare domain (no local part, for example when only a company's domain is known and not a specific address) to see whether it is disposable. A disposable address is a throwaway or temporary inbox (for example from a burner mail service) that someone uses to receive a single signup message and evade normal registration requirements, rather than a real, ongoing mailbox. In the response, `disposable` is the core true or false verdict. `action` is the recommended handling: `allow`, `warn`, or `block`, based on the caller's own account policy. Extra opt in signals may also be present: `mx_valid` (whether the domain's mail servers accept mail at all), `relay` (a forwarding or catch all style address rather than a dedicated inbox), `public_domain` (a well known free provider such as Gmail or Outlook), and `did_you_mean` (a likely intended domain when the one given looks like a typo). This tool always fails open: if a network problem, timeout, rate limit, or server error prevents a real check, the call still succeeds and returns `checked` false with `action` allow, plus a `note` explaining the check could not be completed. Treat that outcome as inconclusive, never as evidence the address is safe.

Input parameters:

- `domain` (string, required): A bare domain with no local part and no @ sign, for example example.com.

### `check_batch` (~343 tokens)

Check a batch of emails and domains for disposable

Checks up to 100 email addresses or domains at once in a single call, which is far more efficient than calling the single-item tools in a loop. Provide a mixed list in `items`: entries containing an @ sign are sent as email addresses, and all other entries are sent as bare domains. A disposable address is a throwaway or temporary inbox (for example from a burner mail service) that someone uses to receive a single signup message and evade normal registration requirements, rather than a real, ongoing mailbox. In the response, `disposable` is the core true or false verdict. `action` is the recommended handling: `allow`, `warn`, or `block`, based on the caller's own account policy. Extra opt in signals may also be present: `mx_valid` (whether the domain's mail servers accept mail at all), `relay` (a forwarding or catch all style address rather than a dedicated inbox), `public_domain` (a well known free provider such as Gmail or Outlook), and `did_you_mean` (a likely intended domain when the one given looks like a typo). This tool always fails open: if a network problem, timeout, rate limit, or server error prevents a real check, the call still succeeds and returns `checked` false with `action` allow, plus a `note` explaining the check could not be completed. Treat that outcome as inconclusive, never as evidence the address is safe.

Input parameters:

- `items` (array, required): 1 to 100 entries, each either a full email address or a bare domain. Entries containing an @ sign are checked as email addresses; all other entries are checked as bare domains.

## Diagnostics

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

## Score history

- 2026-08-07: 66
- 2026-08-06: 66
- 2026-08-05: 28

## Links

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