# Mnemoscope (npm · @mnemoscope/mcp-server)

Predict context rot, sign every agent write, tier reads. Markdown-native, 100% local.

- Trust score: 71/100 (medium)
- Change this week: +29
- Registry status: active
- Liveness: live
- Owner verified: no
- Last scored: 2026-08-03

## Components

- npm · `@mnemoscope/mcp-server`: 71/100 (this document), [markdown](https://verifymcp.io/servers/toonight-mnemoscope/mnemoscope-mcp-server.md), [page](https://verifymcp.io/servers/toonight-mnemoscope/mnemoscope-mcp-server)

## Channel facts

- Registry: `npm`
- Package: `@mnemoscope/mcp-server`
- Version: `0.2.0`
- 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 2026-08-03.

- **Supply Chain Security**: 87/100
  - No malware found by supply-chain analysis.
  - Only part of the dependency tree could be resolved (95 of 99), 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 (95 of 99), so this covers what we could see, not the whole tree.
- **Provenance & Transparency**: 97/100
  - Source repository is publicly reachable at the declared URL.
  - Cryptographically verified build provenance (signed, bound to toonight/Mnemoscope).
  - Clear OSI-approved license (Apache-2.0).
  - Actively maintained (last published 96 days ago).
  - Disclosure check failed: no security disclosure policy was found in the source repository.
- **Schema Quality & AI Usability**: 49/100
  - AI-judged instruction clarity (fair).
  - Tool/resource definitions use about 269 tokens (~67/item across 4 items; 4 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**: 69/100
  - 100% of tools have a non-trivial description (not blank, and not just the tool's name).
  - 8% 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 toonight-mnemoscope -- npx -y @mnemoscope/mcp-server
```

### Codex

```bash
codex mcp add toonight-mnemoscope -- npx -y @mnemoscope/mcp-server
```

### opencode

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

### OpenClaw

```bash
openclaw mcp add toonight-mnemoscope --command npx --arg -y --arg @mnemoscope/mcp-server
```

### Hermes

```yaml
mcp_servers:
  toonight-mnemoscope:
    command: "npx"
    args: ["-y", "@mnemoscope/mcp-server"]
```

### Other

```json
{
  "mcpServers": {
    "toonight-mnemoscope": {
      "command": "npx",
      "args": [
        "-y",
        "@mnemoscope/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.

### 2026-08-03 (score 71, +4)

- [functional improvement] Stability: unverified → 0.23

### 2026-08-02 (score 67, +49)

- [security improvement] Known CVEs: unverified → partial
- [security improvement] Install scripts: unverified → pass
- [security improvement] Provenance: unverified → pass
- [security improvement] Malware scan: unverified → pass
- [security] Stability: Stability not yet verified: not enough scan history yet (needs a 30-day window).
- [security] The attested source repository moved: toonight/Mnemoscope
- [functional regression] Security disclosure: fail → unverified
- [functional regression] Tool coverage: 100 → unverified
- [functional improvement] License: unverified → pass
- [functional improvement] Schema quality: unverified → fair
- [functional improvement] Dependency health: unverified → partial
- [functional improvement] Maintenance: unverified → pass
- [functional improvement] MCP protocol: unverified → pass
- [functional] First check of Schema quality: unverified
- [functional] Licence: Apache-2.0

### 2026-07-31 (score 18, −6)

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

### 2026-07-30 (score 24, −18)

- [security regression] Malware scan: pass → unverified

### 2026-07-27 (score 42)

First indexed and scored.

## MCP tools (4)

### `predict_rot` (~66 tokens)

Compute a predictive context-rot risk score (0-100) for a Markdown vault before injecting it into an LLM. Returns the score, a breakdown of contributing factors, and the 5 highest-risk notes.

Input parameters:

- `vault_path` (string, required): Absolute path to the vault root directory.

### `get_tiered_read` (~75 tokens)

Returns a tiered (working / episodic / semantic) view of a Markdown vault, designed to be used as a compacted context substitute instead of injecting the full vault.

Input parameters:

- `episodic_max_age_days` (number)
- `vault_path` (string, required)
- `working_max_age_days` (number)

### `record_journal` (~88 tokens)

Append an entry to the local signed journal of agent operations on a vault. Use this to record reads, writes, creates, or deletes performed during a session.

Input parameters:

- `content_after` (string)
- `content_before` (string)
- `op` (string, required)
- `session_id` (string, required)
- `target_path` (string, required)
- `vault_path` (string, required)

### `read_journal` (~40 tokens)

Read the journal entries for a vault. Optionally filter by session_id.

Input parameters:

- `session_id` (string)
- `vault_path` (string, required)

## Diagnostics

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

## Score history

- 2026-08-03: 71
- 2026-08-02: 67
- 2026-08-01: 18
- 2026-07-31: 18
- 2026-07-30: 24
- 2026-07-28: 42
- 2026-07-27: 42

## Links

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