# io.github.hawthornhollows/passage-protocol (npm · @cellar-door/mcp-server)

Departure and admission records for AI agents with Ed25519/P-256 signatures.

- Trust score: 62/100 (medium)
- Change this week: +44
- Registry status: active
- Liveness: live
- Owner verified: no
- Last scored: 2026-08-03

## Components

- npm · `@cellar-door/mcp-server`: 62/100 (this document), [markdown](https://verifymcp.io/servers/hawthornhollows-passage-protocol/cellar-door-mcp-server.md), [page](https://verifymcp.io/servers/hawthornhollows-passage-protocol/cellar-door-mcp-server)

## Channel facts

- Registry: `npm`
- Package: `@cellar-door/mcp-server`
- Version: `0.1.7`
- 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 (104 of 108), 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 (104 of 108), so this covers what we could see, not the whole tree.
- **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 (Apache-2.0).
  - Actively maintained (last published 141 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 460 tokens (~51/item across 9 items; 9 tools + 0 resources), lean.
  - Usage-examples check failed: none of the tools include examples.
- **Stability & Change Management**: 27/100
  - Stability observed for 8 of 30 days with no destabilising changes; credit accrues until the full window elapses.
- **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.

## Install

### Claude

```bash
claude mcp add hawthornhollows-passage-protocol -- npx -y @cellar-door/mcp-server
```

### Codex

```bash
codex mcp add hawthornhollows-passage-protocol -- npx -y @cellar-door/mcp-server
```

### opencode

```json
{
  "$schema": "https://opencode.ai/config.json",
  "mcp": {
    "hawthornhollows-passage-protocol": {
      "type": "local",
      "command": [
        "npx",
        "-y",
        "@cellar-door/mcp-server"
      ],
      "enabled": true
    }
  }
}
```

### OpenClaw

```bash
openclaw mcp add hawthornhollows-passage-protocol --command npx --arg -y --arg @cellar-door/mcp-server
```

### Hermes

```yaml
mcp_servers:
  hawthornhollows-passage-protocol:
    command: "npx"
    args: ["-y", "@cellar-door/mcp-server"]
```

### Other

```json
{
  "mcpServers": {
    "hawthornhollows-passage-protocol": {
      "command": "npx",
      "args": [
        "-y",
        "@cellar-door/mcp-server"
      ]
    }
  }
}
```

## 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.

### 2026-08-02 (score 62, +31)

- [security regression] Provenance: unverified → fail
- [security improvement] Install scripts: unverified → pass
- [security improvement] Known CVEs: unverified → partial
- [functional regression] Security disclosure: unverified → fail
- [functional improvement] Schema quality: unverified → good
- [functional improvement] License: unverified → pass
- [functional improvement] Dependency health: unverified → partial
- [functional improvement] Maintenance: unverified → pass
- [functional improvement] MCP protocol: unverified → pass
- [functional improvement] Stability: unverified → 0.23
- [functional] Licence: Apache-2.0

### 2026-08-01 (score 31, +9)

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

### 2026-07-31 (score 22, −18)

- [security regression] Malware scan: pass → unverified

### 2026-07-30 (score 40, +22)

- [functional improvement] Tool coverage: unverified → 100
- [functional] First check of Schema quality: fail
- [functional] First check of Schema quality: unverified
- [functional] First check of Tool coverage: 100
- [functional] First check of Schema quality: pass

### 2026-07-27 (score 18)

First indexed and scored.

## MCP tools (9)

### `generate_identity` (~22 tokens)

Generate a new Ed25519 DID keypair for signing EXIT markers

### `quick_exit` (~67 tokens)

One-shot create and sign a departure marker. Generates a new identity if none exists.

Input parameters:

- `exitType` (string): Type of exit (default: Voluntary)
- `origin` (string, required): DID or identifier of the departing agent
- `reason` (string): Human-readable reason for departure

### `create_exit_marker` (~67 tokens)

Create and sign a departure marker. Uses session identity or generates a new one.

Input parameters:

- `exitType` (string): Type of exit (default: Voluntary)
- `origin` (string, required): DID or identifier of the departing agent
- `reason` (string): Human-readable reason for departure

### `verify_exit_marker` (~35 tokens)

Verify a signed EXIT marker from its JSON representation

Input parameters:

- `markerJson` (string, required): JSON string of the EXIT marker to verify

### `counter_sign_exit_marker` (~70 tokens)

Add a counter-signature to a signed EXIT marker, attesting agreement with the departure record

Input parameters:

- `markerJson` (string, required): JSON string of the signed EXIT marker to counter-sign
- `role` (string): Role label for the counter-signer (e.g. 'origin', 'platform')

### `verify_and_admit` (~78 tokens)

Verify an EXIT marker, evaluate an admission policy, and create a signed arrival marker

Input parameters:

- `admissionPolicy` (string): Admission policy preset (default: OPEN_DOOR). Ignored if serverPolicy is set.
- `destination` (string, required): Destination platform/system identifier
- `exitMarkerJson` (string, required): JSON string of the EXIT marker

### `evaluate_admission` (~48 tokens)

Check whether an EXIT marker meets an admission policy without creating an arrival

Input parameters:

- `exitMarkerJson` (string, required): JSON string of the EXIT marker
- `policy` (string, required): Admission policy preset

### `verify_transfer` (~53 tokens)

Verify a complete EXIT→ENTRY transfer: check both markers and continuity

Input parameters:

- `arrivalMarkerJson` (string, required): JSON string of the ARRIVAL marker
- `exitMarkerJson` (string, required): JSON string of the EXIT marker

### `list_admission_policies` (~20 tokens)

List available admission policy presets and their configurations

## Diagnostics

Captured diagnostic sections: Provenance, Dependencies. The full working is on the page: https://verifymcp.io/servers/hawthornhollows-passage-protocol/cellar-door-mcp-server#diagnostics

## Score history

- 2026-08-03: 62
- 2026-08-02: 62
- 2026-08-01: 31
- 2026-07-31: 22
- 2026-07-30: 40
- 2026-07-28: 18
- 2026-07-27: 18

## Links

- npm package: https://www.npmjs.com/package/@cellar-door/mcp-server
- Socket report: https://socket.dev/npm/package/@cellar-door/mcp-server
- Changelog RSS feed: https://verifymcp.io/servers/hawthornhollows-passage-protocol/cellar-door-mcp-server/changelog.xml
- Changelog JSON feed: https://verifymcp.io/servers/hawthornhollows-passage-protocol/cellar-door-mcp-server/changelog.json
- HTML version of this page: https://verifymcp.io/servers/hawthornhollows-passage-protocol/cellar-door-mcp-server