# Cejel (oci · ghcr.io/barglabs/cejel@sha256:a0f0049a57aea728f3e5b026882887d0d2ea092d5f112be21db1d47298bcb6ec)

Offline deterministic engineering-trust certificates for repositories, with no telemetry.

- Trust score: 42/100 (low)
- Registry status: active
- Liveness: live
- Owner verified: no
- Last scored: 2026-09-21

## Components

- oci · `ghcr.io/barglabs/cejel@sha256:a0f0049a57aea728f3e5b026882887d0d2ea092d5f112be21db1d47298bcb6ec`: 42/100 (this document), [markdown](https://verifymcp.io/servers/barglabs-cejel/ghcr-io-barglabs-cejel-sha256-a0f0049a57aea728f3e5b026882887d0d2ea092d5f112be21d.md), [page](https://verifymcp.io/servers/barglabs-cejel/ghcr-io-barglabs-cejel-sha256-a0f0049a57aea728f3e5b026882887d0d2ea092d5f112be21d)

## Channel facts

- Registry: `oci`
- Package: `ghcr.io/barglabs/cejel@sha256:a0f0049a57aea728f3e5b026882887d0d2ea092d5f112be21db1d47298bcb6ec`
- 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 2026-09-21.

- **Supply Chain Security**: 0/100
  - Malware scan not yet available for this package.
  - Known CVEs could not be checked: this artifact ships no SBOM, so there is no dependency list to read. Publishing one would let us assess it.
  - Install-script risk not yet assessed.
  - Dependency health could not be checked: this artifact ships no SBOM, so there is no dependency list to read. Publishing one would let us assess it.
- **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 (AGPL-3.0).
  - Actively maintained (last published 4 days ago).
  - Disclosure check failed: no security disclosure policy was found in the source repository.
- **Schema Quality & AI Usability**: 84/100
  - 100% of prompts and resources have a non-trivial description (not blank, and not just the item's name).
  - AI-judged instruction clarity (good).
  - Tool/resource definitions use about 268 tokens (~89/item across 3 items; 1 tools + 2 resources), lean.
  - Usage-examples check failed: none of the tools include examples.
- **Stability & Change Management**: 0/100
  - Stability not yet verified: not enough scan history yet (needs a 30-day window).
- **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.
- **Tool Safety**: 100/100
  - No prompt-injection markers were found in the server instructions, tool names or descriptions we captured.
  - We read all 1 captured tool definition(s), and no name or description among them implies an irreversible operation.
  - An AI judge read all 2 captured unit(s) of tool text and found none that tries to manipulate the model reading it.
- **Capabilities**: 100/100
  - Implements a supported MCP spec version (2025-11-25); the latest is 2026-07-28.

**Unverified: 2 categories.** Categories scored 0 because we could not verify them: a data source with nothing on this package, evidence we could not reach, or a check we could not run. We only credit what we can confirm.

## 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.

### 2026-09-17 (score 42)

First indexed and scored.

## MCP tools (1)

### `scan` (~227 tokens)

Score a repository's engineering-trust signals (tests, secrets, isolation, claim-vs-reality, CI discipline) with the @cejel/cejel trust-certificate scan — the exact same offline, deterministic scoring as running the @cejel/cejel CLI on the path. Returns the trust cert as JSON: overall + code/process sub-scores (0-4) for a scored repository, or null scores with an abstention reason when Cejel establishes structural source absence or zero measurable free-core criteria; plus the verdict and top findings. No network, no telemetry, no signup. After a scan, the full HTML certificate and SVG badge are readable as the resources cejel-cejel://last-scan/certificate.html and cejel-cejel://last-scan/badge.svg.

Input parameters:

- `format` (string): summary (default): compact cert digest — scores, verdict, top findings. json: the full structured report, identical to the CLI's report.json.
- `path` (string, required): Path to the repository to score (absolute, or relative to the server CWD)

## Diagnostics

Captured diagnostic sections: Provenance. The full working is on the page: https://verifymcp.io/servers/barglabs-cejel/ghcr-io-barglabs-cejel-sha256-a0f0049a57aea728f3e5b026882887d0d2ea092d5f112be21d#diagnostics

## Score history

- 2026-09-21: 42
- 2026-09-20: 42
- 2026-09-19: 42
- 2026-09-18: 42
- 2026-09-17: 42

## Common questions

### What is the Cejel MCP server?

Cejel is an MCP server listed in the public MCP registry as io.github.BargLabs/cejel. Offline deterministic engineering-trust certificates for repositories, with no telemetry. This page covers its container image (ghcr.io/barglabs/cejel@sha256:a0f0049a57aea728f3e5b026882887d0d2ea092d5f112be21db1d47298bcb6ec).

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

Cejel scores 42 out of 100 on VerifyMCP. 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.

### What tools does the Cejel MCP server expose?

Cejel exposes 1 tool: scan. Their descriptions and schemas cost roughly 227 tokens of context every time the server is loaded.

### Is the Cejel MCP server still maintained?

Cejel is still listed as active in the MCP registry. We last reached this channel on 21 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 Cejel MCP server under?

Cejel declares the AGPL-3.0 licence, which is OSI-approved. That covers the source only, and says nothing about the cost of any service it calls.

## Links

- Repository: https://github.com/BargLabs/cejel
- Website: https://cejel.dev/
- Changelog RSS feed: https://verifymcp.io/servers/barglabs-cejel/ghcr-io-barglabs-cejel-sha256-a0f0049a57aea728f3e5b026882887d0d2ea092d5f112be21d.xml
- Changelog JSON feed: https://verifymcp.io/servers/barglabs-cejel/ghcr-io-barglabs-cejel-sha256-a0f0049a57aea728f3e5b026882887d0d2ea092d5f112be21d.json
- HTML version of this page: https://verifymcp.io/servers/barglabs-cejel/ghcr-io-barglabs-cejel-sha256-a0f0049a57aea728f3e5b026882887d0d2ea092d5f112be21d