# Arcaeon (pypi · arcaeon)

A record of what an agent did that the agent cannot quietly rewrite, and a way for anyone to check.

- Trust score: 39/100 (low)
- Change this week: 0
- Registry status: active
- Liveness: live
- Owner verified: no
- Last scored: 2026-11-05

## Components

- pypi · `arcaeon`: 39/100 (this document), [markdown](https://verifymcp.io/servers/io-arcaeon-arcaeon/arcaeon.md), [page](https://verifymcp.io/servers/io-arcaeon-arcaeon/arcaeon)

## Channel facts

- Registry: `pypi`
- Package: `arcaeon`
- Version: `0.9.0`
- 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 2026-11-05.

- **Supply Chain Security**: 100/100
  - No malware found by supply-chain analysis.
  - No known CVEs affecting this package version or its production dependencies.
  - Runs setuptools.build_meta at install time, a recognised build step with no custom scripting around it.
  - No production dependencies, so there is no dependency health to assess.
- **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 30 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 server's registry entry declares environment variables (an API key or similar), and its server did not start in our sandbox, so we have no schema to assess.
- **Stability & Change Management**: 0/100
  - Stability not yet verified: this server's registry entry declares environment variables (an API key or similar), and its server did not start in our sandbox, so we have no schema to compare.
- **Tool Coverage**: 0/100
  - Tool coverage not yet verified: this server's registry entry declares environment variables (an API key or similar), and its server did not start in our sandbox, so we have no tool definitions to assess.
- **Tool Safety**: 0/100
  - Tool safety not yet verified: this server's registry entry declares environment variables (an API key or similar), and its server did not start in our sandbox, so we have no tool text to scan.
- **Capabilities**: 0/100
  - Protocol version not yet verified: this server's registry entry declares environment variables (an API key or similar), and its server did not start in our sandbox, 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 Arcaeon MCP server?

Arcaeon runs locally as a PyPI package, launched with uvx arcaeon mcp. The registry lists launch arguments for this package that we cannot show safely, so they are left out. Check the registry entry for what the server needs. 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 io-arcaeon-arcaeon -- uvx arcaeon mcp
```

The registry lists launch arguments for this package that we cannot show safely, so they are left out. Check the registry entry for what the server needs.

### Cursor

```json
{
  "mcpServers": {
    "io-arcaeon-arcaeon": {
      "command": "uvx",
      "args": [
        "arcaeon",
        "mcp"
      ]
    }
  }
}
```

The registry lists launch arguments for this package that we cannot show safely, so they are left out. Check the registry entry for what the server needs.

### VS Code

```json
{
  "servers": {
    "io-arcaeon-arcaeon": {
      "command": "uvx",
      "args": [
        "arcaeon",
        "mcp"
      ]
    }
  }
}
```

The registry lists launch arguments for this package that we cannot show safely, so they are left out. Check the registry entry for what the server needs.

### Codex

```bash
codex mcp add io-arcaeon-arcaeon -- uvx arcaeon mcp
```

The registry lists launch arguments for this package that we cannot show safely, so they are left out. Check the registry entry for what the server needs.

### opencode

```json
{
  "$schema": "https://opencode.ai/config.json",
  "mcp": {
    "io-arcaeon-arcaeon": {
      "type": "local",
      "command": [
        "uvx",
        "arcaeon",
        "mcp"
      ],
      "enabled": true
    }
  }
}
```

The registry lists launch arguments for this package that we cannot show safely, so they are left out. Check the registry entry for what the server needs.

### OpenClaw

```bash
openclaw mcp add io-arcaeon-arcaeon --command uvx --arg arcaeon --arg mcp
```

The registry lists launch arguments for this package that we cannot show safely, so they are left out. Check the registry entry for what the server needs.

### Hermes

```yaml
mcp_servers:
  io-arcaeon-arcaeon:
    command: "uvx"
    args: ["arcaeon", "mcp"]
```

The registry lists launch arguments for this package that we cannot show safely, so they are left out. Check the registry entry for what the server needs.

### Netclaw

```json
{
  "McpServers": {
    "io-arcaeon-arcaeon": {
      "Transport": "stdio",
      "Command": "uvx",
      "Arguments": [
        "arcaeon",
        "mcp"
      ]
    }
  }
}
```

The registry lists launch arguments for this package that we cannot show safely, so they are left out. Check the registry entry for what the server needs.

### Vellum

```bash
assistant mcp add io-arcaeon-arcaeon -t stdio -c uvx -a arcaeon mcp
```

The registry lists launch arguments for this package that we cannot show safely, so they are left out. Check the registry entry for what the server needs.

### Other

```json
{
  "mcpServers": {
    "io-arcaeon-arcaeon": {
      "command": "uvx",
      "args": [
        "arcaeon",
        "mcp"
      ]
    }
  }
}
```

The registry lists launch arguments for this package that we cannot show safely, so they are left out. Check the registry entry for what the server needs.

## 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.

### 2026-11-04 (score 39, 0)

- [security regression] Provenance: unverified → fail

### 2026-11-02 (score 39, 0)

- [security regression] Provenance: fail → unverified

### 2026-10-31 (score 39, 0)

- [functional regression] Security disclosure: unverified → fail

### 2026-10-29 (score 39, 0)

- [security regression] Provenance: unverified → fail
- [functional regression] Security disclosure: fail → unverified

### 2026-10-27 (score 39, 0)

- [security regression] Provenance: fail → unverified
- [functional regression] Security disclosure: unverified → fail

### 2026-10-26 (score 39, 0)

- [functional regression] Security disclosure: fail → unverified

### 2026-10-22 (score 39, 0)

- [functional regression] Security disclosure: unverified → fail

### 2026-10-21 (score 39, 0)

- [functional regression] Security disclosure: fail → unverified

## 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, Install scripts, Dependencies. The full working is on the page: https://verifymcp.io/servers/io-arcaeon-arcaeon/arcaeon#diagnostics

## Score history

- 2026-11-05: 39
- 2026-11-04: 39
- 2026-11-03: 39
- 2026-11-02: 39
- 2026-11-01: 39
- 2026-10-31: 39
- 2026-10-30: 39
- 2026-10-29: 39
- 2026-10-28: 39
- 2026-10-27: 39
- 2026-10-26: 39
- 2026-10-25: 39
- 2026-10-24: 39
- 2026-10-23: 39
- 2026-10-22: 39
- 2026-10-21: 39
- 2026-10-20: 39
- 2026-10-19: 39
- 2026-10-18: 39
- 2026-10-17: 39
- 2026-10-16: 39
- 2026-10-15: 39
- 2026-10-14: 39
- 2026-10-13: 39
- 2026-10-12: 39
- 2026-10-06: 39
- 2026-10-04: 39
- 2026-10-03: 39
- 2026-10-02: 39
- 2026-10-01: 39

## Common questions

### What is the Arcaeon MCP server?

Arcaeon is an MCP server listed in the public MCP registry as io.arcaeon/arcaeon. A record of what an agent did that the agent cannot quietly rewrite, and a way for anyone to check. This page covers its PyPI package (arcaeon).

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

Arcaeon scores 39 out of 100 on VerifyMCP. We found no known CVEs affecting it as of 5 November 2026. 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 Arcaeon MCP server still maintained?

Arcaeon is still listed as active in the MCP registry. We last reached this channel on 5 November 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 Arcaeon MCP server under?

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

### What did VerifyMCP test on the Arcaeon MCP server?

VerifyMCP ran 9 checks on Arcaeon, covering Malware scan, Known CVEs, Install scripts, Dependency health and 5 more. 5 items could not be completed, a gap on our side rather than a finding about Arcaeon: Schema quality, Stability, Tool coverage, Tool safety and 1 more. 5 categories score 0 for that reason, because we only credit what we can confirm. Endpoint Security and Transport & Reachability do not apply to a PyPI package, so they were not tested. The score does not measure everything, and the scoring documentation lists what it leaves out.

## Links

- PyPI project: https://pypi.org/project/arcaeon/
- Socket report: https://socket.dev/pypi/package/arcaeon
- Repository: https://github.com/Arcaeon-io/arcaeon
- Website: https://arcaeon.io/
- Changelog RSS feed: https://verifymcp.io/servers/io-arcaeon-arcaeon/arcaeon.xml
- Changelog JSON feed: https://verifymcp.io/servers/io-arcaeon-arcaeon/arcaeon/changelog.json
- Trust report (JSON): https://verifymcp.io/servers/io-arcaeon-arcaeon/arcaeon.json
- HTML version of this page: https://verifymcp.io/servers/io-arcaeon-arcaeon/arcaeon