# Cortex MCP — Multi-Level Reasoning Server (npm · @j0hanz/cortex-mcp)

Multi-level reasoning MCP server with configurable depth levels

- Trust score: 79/100 (medium)
- Change this week: +26
- Registry status: active
- Liveness: live
- Owner verified: no
- Last scored: 2026-08-03

## Components

- npm · `@j0hanz/cortex-mcp`: 79/100 (this document), [markdown](https://verifymcp.io/servers/j0hanz-cortex-mcp/j0hanz-cortex-mcp.md), [page](https://verifymcp.io/servers/j0hanz-cortex-mcp/j0hanz-cortex-mcp)

## Channel facts

- Registry: `npm`
- Package: `@j0hanz/cortex-mcp`
- Version: `1.11.0`
- 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**: 86/100
  - No malware found by supply-chain analysis.
  - Only part of the dependency tree could be resolved (94 of 98), 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 (94 of 98), 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 j0hanz/cortex-mcp).
  - Clear OSI-approved license (MIT).
  - Actively maintained (last published 149 days ago).
  - Disclosure check failed: no security disclosure policy was found in the source repository.
- **Schema Quality & AI Usability**: 73/100
  - 100% of prompts and resources have a non-trivial description (not blank, and not just the item's name).
  - AI-judged instruction clarity (fair).
  - Tool/resource definitions use about 652 tokens (~93/item across 7 items; 1 tools + 6 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.
  - Structured output schemas are declared (100% of tools); any adoption earns full credit.
- **Capabilities**: 100/100
  - Implements a supported MCP spec version (2025-11-25); the latest is 2026-07-28.

## Install

### Claude

```bash
claude mcp add j0hanz-cortex-mcp -- npx -y @j0hanz/cortex-mcp
```

### Codex

```bash
codex mcp add j0hanz-cortex-mcp -- npx -y @j0hanz/cortex-mcp
```

### opencode

```json
{
  "$schema": "https://opencode.ai/config.json",
  "mcp": {
    "j0hanz-cortex-mcp": {
      "type": "local",
      "command": [
        "npx",
        "-y",
        "@j0hanz/cortex-mcp"
      ],
      "enabled": true
    }
  }
}
```

### OpenClaw

```bash
openclaw mcp add j0hanz-cortex-mcp --command npx --arg -y --arg @j0hanz/cortex-mcp
```

### Hermes

```yaml
mcp_servers:
  j0hanz-cortex-mcp:
    command: "npx"
    args: ["-y", "@j0hanz/cortex-mcp"]
```

### Other

```json
{
  "mcpServers": {
    "j0hanz-cortex-mcp": {
      "command": "npx",
      "args": [
        "-y",
        "@j0hanz/cortex-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.

### 2026-08-03 (score 79, +1)

No change was recorded against any check on this day. Stability & Change Management went from 23 to 27. That category is still filling its 30-day observation window: 7 days of observed history at the previous scan, 8 at this one. The score rises as the window fills, whether or not the server changes.

### 2026-08-02 (score 78, +73)

- [security improvement] Known CVEs: unverified → partial
- [security improvement] Install scripts: unverified → pass
- [security improvement] Provenance: unverified → pass
- [security improvement] Malware scan: unverified → pass
- [security] The attested source repository moved: j0hanz/cortex-mcp
- [functional regression] Security disclosure: fail → unverified
- [functional improvement] Tool coverage: unverified → 100
- [functional improvement] License: unverified → pass
- [functional improvement] Schema quality: unverified → fair
- [functional improvement] Schema quality: unverified → 100
- [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: MIT

### 2026-08-01 (score 5, −21)

- [functional regression] Schema quality: 100 → unverified
- [functional regression] Tool coverage: 100 → unverified

### 2026-07-31 (score 26, −9)

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

### 2026-07-30 (score 35, −18)

- [security regression] Malware scan: pass → unverified

### 2026-07-27 (score 53)

First indexed and scored.

## MCP tools (1)

### `reasoning_think` (~496 tokens)

Reasoning Think

Structured multi-step reasoning tool. Decomposes analysis into sequential thought steps stored in a persistent session trace.

USAGE PATTERN:
1\. Start: { query: "...", level: "basic"|"normal"|"high"|"expert", thought: "your analysis..." }
2\. Continue: { sessionId: "<from response>", thought: "next step..." } — level is optional; session level is used
3\. Repeat until status: "completed" — the summary field contains the exact next call to make

IMPORTANT: Pass the returned sessionId on every continuation call.
The thought parameter stores YOUR reasoning verbatim — write thorough analysis in each step.
Use stepSummary for a 1-sentence conclusion per step — these accumulate in the summary field for navigation.

Levels: basic (1–3 steps, 2K budget), normal (4–8 steps, 8K budget), high (10–15 steps, 32K budget), expert (20–25 steps, 128K budget).
Alternatives: runMode="run_to_completion" (batch, basic level only), or observation/hypothesis/evaluation fields (structured).
Errors: E_SESSION_NOT_FOUND (expired — start new), E_INVALID_THOUGHT_COUNT (check level ranges).

Input parameters:

- `evaluation` (string): Critique of hypothesis.
- `hypothesis` (string): Proposed next idea.
- `isConclusion` (boolean): End session early at final answer.
- `level` (string): Depth level. Required for new sessions. basic (1–3 steps, 2K budget), normal (4–8 steps, 8K budget), high (10–15 steps, 32K budget), expert (20–25 steps, 128K budget).
- `observation` (string): Known facts at this step.
- `query` (string): Question or problem to analyze.
- `rollbackToStep` (integer): 0-based index to rollback to. Discards later thoughts.
- `runMode` (string): "step" (default) or "run_to_completion" (basic level only).
- `sessionId` (string): Session ID to continue.
- `stepSummary` (string): One-sentence step summary.
- `targetThoughts` (integer): Exact step count. Must fit level range.
- `thought`: Reasoning text. Stored verbatim. String for step mode, string[] for batch.

Output parameters:

- `error` (object)
- `ok` (boolean)
- `result` (object)

## Diagnostics

Captured diagnostic sections: Provenance, Dependencies. The full working is on the page: https://verifymcp.io/servers/j0hanz-cortex-mcp/j0hanz-cortex-mcp#diagnostics

## Score history

- 2026-08-03: 79
- 2026-08-02: 78
- 2026-08-01: 5
- 2026-07-31: 26
- 2026-07-30: 35
- 2026-07-28: 53
- 2026-07-27: 53

## Links

- npm package: https://www.npmjs.com/package/@j0hanz/cortex-mcp
- Socket report: https://socket.dev/npm/package/@j0hanz/cortex-mcp
- Repository: https://github.com/j0hanz/cortex-mcp
- Changelog RSS feed: https://verifymcp.io/servers/j0hanz-cortex-mcp/j0hanz-cortex-mcp/changelog.xml
- Changelog JSON feed: https://verifymcp.io/servers/j0hanz-cortex-mcp/j0hanz-cortex-mcp/changelog.json
- HTML version of this page: https://verifymcp.io/servers/j0hanz-cortex-mcp/j0hanz-cortex-mcp