# MCP Server Attestation (npm · mcp-attest-demo)

Ed25519-signed MCP tool manifests + spawn attestation. Layer-2 supply-chain hardening.

- Trust score: 65/100 (medium)
- Change this week: +21
- Registry status: active
- Liveness: live
- Owner verified: no
- Last scored: 2026-08-03

## Components

- npm · `mcp-attest-demo`: 65/100 (this document), [markdown](https://verifymcp.io/servers/io-studiomeyer-server-attestation/mcp-attest-demo.md), [page](https://verifymcp.io/servers/io-studiomeyer-server-attestation/mcp-attest-demo)

## Channel facts

- Registry: `npm`
- Package: `mcp-attest-demo`
- 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 2026-08-03.

- **Supply Chain Security**: 87/100
  - No malware found by supply-chain analysis.
  - Only part of the dependency tree could be resolved (96 of 100), so this covers what we could see, not the whole tree.
  - No install/post-install scripts declared.
  - Only part of the dependency tree could be resolved (96 of 100), 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 42 days ago).
  - Disclosure check failed: no security disclosure policy was found in the source repository.
- **Schema Quality & AI Usability**: 66/100
  - AI-judged instruction clarity (good).
  - Tool/resource definitions use about 316 tokens (~63/item across 5 items; 5 tools + 0 resources), lean.
  - Usage-examples check failed: none of the tools include examples.
- **Stability & Change Management**: 23/100
  - Stability observed for 7 of 30 days with no destabilising changes; credit accrues until the full window elapses.
- **Tool Coverage**: 81/100
  - 100% of tools have a non-trivial description (not blank, and not just the tool's name).
  - 42% of tool parameters carry a description.
- **Capabilities**: 100/100
  - Implements a supported MCP spec version (2025-11-25); the latest is 2026-07-28.

## Install

### Claude

```bash
claude mcp add io-studiomeyer-server-attestation -- npx -y mcp-attest-demo
```

### Codex

```bash
codex mcp add io-studiomeyer-server-attestation -- npx -y mcp-attest-demo
```

### opencode

```json
{
  "$schema": "https://opencode.ai/config.json",
  "mcp": {
    "io-studiomeyer-server-attestation": {
      "type": "local",
      "command": [
        "npx",
        "-y",
        "mcp-attest-demo"
      ],
      "enabled": true
    }
  }
}
```

### OpenClaw

```bash
openclaw mcp add io-studiomeyer-server-attestation --command npx --arg -y --arg mcp-attest-demo
```

### Hermes

```yaml
mcp_servers:
  io-studiomeyer-server-attestation:
    command: "npx"
    args: ["-y", "mcp-attest-demo"]
```

### Other

```json
{
  "mcpServers": {
    "io-studiomeyer-server-attestation": {
      "command": "npx",
      "args": [
        "-y",
        "mcp-attest-demo"
      ]
    }
  }
}
```

## 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 65, +4)

- [functional improvement] Stability: unverified → 0.23

### 2026-08-02 (score 61, +37)

- [security regression] Provenance: unverified → fail
- [security improvement] Install scripts: unverified → pass
- [security improvement] Known CVEs: unverified → partial
- [security improvement] Malware scan: unverified → pass
- [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] Capabilities: pass → unverified
- [functional regression] Tool coverage: 100 → unverified
- [functional improvement] Schema quality: unverified → good
- [functional improvement] Maintenance: unverified → pass
- [functional improvement] Dependency health: unverified → partial
- [functional improvement] License: unverified → pass
- [functional] Licence: MIT

### 2026-08-01 (score 24, +19)

- [security] Stability: Stability not yet verified: not enough scan history yet (needs a 30-day window).
- [functional improvement] MCP protocol: unverified → pass
- [functional improvement] Tool coverage: unverified → 100

### 2026-07-31 (score 5, −21)

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

### 2026-07-30 (score 26, −18)

- [security regression] Malware scan: pass → unverified

### 2026-07-27 (score 44)

First indexed and scored.

## MCP tools (5)

### `attest_verify_manifest` (~80 tokens)

Verify a signed MCP manifest file against an embedded or supplied public key. Returns valid + signer + toolCount + errors[].

Input parameters:

- `manifestPath` (string, required): Path to the signed-manifest JSON file.
- `publicKeyPath` (string, required): Path to the hex-encoded public key (informational, ignored if manifest carries its own publicKey field).

### `attest_inspect_spawn` (~74 tokens)

Pre-flight a spawn request against an in-memory signed manifest object. Returns allowed + matchedRule + blockedReasons[].

Input parameters:

- `args` (array, required): argv to validate.
- `command` (string, required): Command to spawn.
- `manifest` (object, required): SignedManifest object (full payload, with manifest+signature+publicKey).

### `attest_generate_manifest_template` (~47 tokens)

Generate an unsigned manifest template for a server name and tool list. Caller fills in arg rules and signs.

Input parameters:

- `serverName` (string, required)
- `toolNames` (array, required)

### `attest_sign_manifest` (~68 tokens)

Sign a manifest file with an Ed25519 private key. Writes signed-manifest JSON to outputPath. The manifest's publicKeyFingerprint must already match the signing key.

Input parameters:

- `manifestPath` (string, required)
- `outputPath` (string, required)
- `privateKeyPath` (string, required)

### `attest_keygen` (~47 tokens)

Generate a fresh Ed25519 keypair and write public + private hex files plus return the sha256 fingerprint.

Input parameters:

- `keyName` (string, required)
- `outputDir` (string, required)

## Diagnostics

Captured diagnostic sections: Provenance, Dependencies. The full working is on the page: https://verifymcp.io/servers/io-studiomeyer-server-attestation/mcp-attest-demo#diagnostics

## Score history

- 2026-08-03: 65
- 2026-08-02: 61
- 2026-08-01: 24
- 2026-07-31: 5
- 2026-07-30: 26
- 2026-07-28: 44
- 2026-07-27: 44

## Links

- npm package: https://www.npmjs.com/package/mcp-attest-demo
- Socket report: https://socket.dev/npm/package/mcp-attest-demo
- Repository: https://github.com/studiomeyer-io/mcp-server-attestation
- Changelog RSS feed: https://verifymcp.io/servers/io-studiomeyer-server-attestation/mcp-attest-demo/changelog.xml
- Changelog JSON feed: https://verifymcp.io/servers/io-studiomeyer-server-attestation/mcp-attest-demo/changelog.json
- HTML version of this page: https://verifymcp.io/servers/io-studiomeyer-server-attestation/mcp-attest-demo