# Locus (npm · @sylphx/locus)

Locus — the exact code chunk for the job: local BM25 search for agents.

- Trust score: 36/100 (low)
- Registry status: deprecated
- Liveness: live
- Owner verified: no
- Last scored: 2026-09-26

> **Deprecated**: this server is marked deprecated in the MCP registry. The registry records this reason: "Merged into repomap. Use io.github.SylphxAI/repomap (npm @sylphx/repomap)."

## Components

- npm · `@sylphx/locus`: 36/100 (this document), [markdown](https://verifymcp.io/servers/sylphxai-locus/sylphx-locus.md), [page](https://verifymcp.io/servers/sylphxai-locus/sylphx-locus)

## Channel facts

- Registry: `npm`
- Package: `@sylphx/locus`
- Version: `0.6.4`
- 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 2026-09-26.

- **Supply Chain Security**: 90/100
  - No malware found by supply-chain analysis.
  - CVE check failed: a known high-severity CVE affects jsondiffpatch 0.6.0, reached via @sylphx/coderag > ai > jsondiffpatch. A fixed version is available.
  - No install/post-install scripts declared.
  - Dependency health was assessed across the 181 of 182 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**: 0/100
  - Schema quality not yet verified: this package installed, but its server did not start, so we have no schema to assess.
- **Stability & Change Management**: 0/100
  - Stability not yet verified: this package installed, but its server did not start, so we have no schema to compare.
- **Tool Coverage**: 0/100
  - Tool coverage not yet verified: this package installed, but its server did not start, so we have no tool definitions to assess.
- **Tool Safety**: 0/100
  - Tool safety not yet verified: this package installed, but its server did not start, so we have no tool text to scan.
- **Capabilities**: 0/100
  - Protocol version not yet verified: this package installed, but its server did not start, so we never saw its MCP handshake.

**Unverified: 5 categories.** Categories scored 0 because our sandbox has not given us the schema these checks need to read. That is a gap on our side rather than a finding about the package, and we only credit what we can confirm, so the score stands at 0 until the capture succeeds. We are working through the fleet, so this normally clears without any action from you.

## Install

### How do I install the Locus MCP server?

Locus runs locally as an npm package, launched with npx -y @sylphx/locus. Ready-made configuration for Claude, Cursor, VS Code, Codex and 5 more is on this page, copied from each client's own documentation.

### Claude

```bash
claude mcp add sylphxai-locus -- npx -y @sylphx/locus
```

### Cursor

```json
{
  "mcpServers": {
    "sylphxai-locus": {
      "command": "npx",
      "args": [
        "-y",
        "@sylphx/locus"
      ]
    }
  }
}
```

### VS Code

```json
{
  "servers": {
    "sylphxai-locus": {
      "command": "npx",
      "args": [
        "-y",
        "@sylphx/locus"
      ]
    }
  }
}
```

### Codex

```bash
codex mcp add sylphxai-locus -- npx -y @sylphx/locus
```

### opencode

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

### OpenClaw

```bash
openclaw mcp add sylphxai-locus --command npx --arg -y --arg @sylphx/locus
```

### Hermes

```yaml
mcp_servers:
  sylphxai-locus:
    command: "npx"
    args: ["-y", "@sylphx/locus"]
```

### Netclaw

```json
{
  "McpServers": {
    "sylphxai-locus": {
      "Transport": "stdio",
      "Command": "npx",
      "Arguments": [
        "-y",
        "@sylphx/locus"
      ]
    }
  }
}
```

### Vellum

```bash
assistant mcp add sylphxai-locus -t stdio -c npx -a -y @sylphx/locus
```

### Other

```json
{
  "mcpServers": {
    "sylphxai-locus": {
      "command": "npx",
      "args": [
        "-y",
        "@sylphx/locus"
      ]
    }
  }
}
```

## 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.

### 2026-09-25 (score 36, 0)

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

### 2026-09-24 (score 36, +8)

- [security regression] GHSA-f88m-g3jw-g9cj affects this package: high
- [security regression] CVE-2026-41650 affects this package: high
- [security regression] GHSA-rgj7-g3m4-5g8c affects this package: high
- [security regression] CVE-2025-9910 affects this package: high
- [security regression] CVE-2026-8657 affects this package: high
- [security regression] CVE-2026-8769 affects this package: high
- [security regression] CVE-2025-48985 affects this package: high
- [security regression] Known CVEs: unverified → fail
- [functional improvement] Dependency health: unverified → partial

### 2026-09-23 (score 28)

First indexed and scored.

## MCP tools (0)

Tools for package channels are captured by running the package in an isolated sandbox. The most recent sandbox run could not capture a tool list from this package.

## Diagnostics

Captured diagnostic sections: Provenance, Vulnerabilities, Dependencies. The full working is on the page: https://verifymcp.io/servers/sylphxai-locus/sylphx-locus#diagnostics

## Score history

- 2026-09-26: 36
- 2026-09-25: 36
- 2026-09-24: 36
- 2026-09-23: 28

## Common questions

### What is the Locus MCP server?

Locus is an MCP server listed in the public MCP registry as io.github.SylphxAI/locus. Locus, the exact code chunk for the job: local BM25 search for agents. This page covers its npm package (@sylphx/locus).

### Is the Locus MCP server safe to use?

Locus scores 36 out of 100 on VerifyMCP. We recorded 7 known advisories against it as of 26 September 2026. It declares no install or post-install scripts. That is a record of what we were able to check automatically, not an endorsement. The category breakdown on this page shows every signal behind the number, including the ones we could not confirm.

### Is the Locus MCP server still maintained?

Locus is marked deprecated in the MCP registry. We last reached this channel on 26 September 2026. Those dates come from our own scans of the registry and the channel itself, not from anything the publisher announced.

### What licence is the Locus MCP server under?

Locus declares the MIT licence, which is OSI-approved. That covers the source only, and says nothing about the cost of any service it calls.

## Links

- npm package: https://www.npmjs.com/package/@sylphx/locus
- Socket report: https://socket.dev/npm/package/@sylphx/locus
- Repository: https://github.com/SylphxAI/locus
- Website: https://sylphxai.github.io/locus/
- Changelog RSS feed: https://verifymcp.io/servers/sylphxai-locus/sylphx-locus.xml
- Changelog JSON feed: https://verifymcp.io/servers/sylphxai-locus/sylphx-locus.json
- HTML version of this page: https://verifymcp.io/servers/sylphxai-locus/sylphx-locus