Sonatype Nexus

Name: Sonatype Nexus
Author: oomchiller

by oomchillerversion 0.2.1i★ –iRuns on your computer

Registry nameio.github.oomchiller/nexus-mcp-server

Install

Overview

Description from the maker (original English)

Read-only-first Sonatype Nexus Repository 3 inspection, audit and documentation.

PopNx MCP’s three pillars

These three are never merged into one score: opinions, measurements and popularity are different things.

User voiceiNo reviews yetReviews open together with accounts in a later step
Our basic checksi1 of 1 passedChecked from public information; code not scanned yet
UsageiNot measured yet★ –

What you can do with it

We have not written a plain-language summary for this one yet. Below are the facts we read from the registry.

Connection: Runs on your computer
Transport: stdio
Category: Developer tools
You need to fill in: NEXUS_URL, NEXUS_PASSWORD

Install

Pick the AI app you use, then copy the settings.

Before you install

Basic checks: 1 of 1 passed
Runs on your computer with your user’s permissions (files, network, apps).
You fill in yourself: NEXUS_URL, NEXUS_USERNAME, NEXUS_PASSWORD, NEXUS_VERIFY_TLS, NEXUS_MCP_MODE, NEXUS_MCP_ENABLE_WRITE_TOOLS, NEXUS_MCP_ENABLE_RAW_API

Values marked secret are keys to your account. Never share them or paste them into a chat.

You need

DockerDocker installed

Which app do you use?

ClaudeClaude CodeCursorVS CodeChatGPT

Pick your app above. We remember it, so next time the button says “Install in …”.

Open Claude Desktop → Settings → Developer → Edit Config, and paste this into claude_desktop_config.json

{
  "mcpServers": {
    "nexus": {
      "command": "docker",
      "args": [
        "run",
        "-i",
        "--rm",
        "-e",
        "NEXUS_URL",
        "-e",
        "NEXUS_USERNAME",
        "-e",
        "NEXUS_PASSWORD",
        "-e",
        "NEXUS_VERIFY_TLS",
        "-e",
        "NEXUS_MCP_MODE",
        "-e",
        "NEXUS_MCP_ENABLE_WRITE_TOOLS",
        "-e",
        "NEXUS_MCP_ENABLE_RAW_API",
        "ghcr.io/oomchiller/nexus-mcp-server:0.2.1"
      ],
      "env": {
        "NEXUS_URL": "your-value",
        "NEXUS_USERNAME": "your-value",
        "NEXUS_PASSWORD": "your-value",
        "NEXUS_VERIFY_TLS": "your-value",
        "NEXUS_MCP_MODE": "your-value",
        "NEXUS_MCP_ENABLE_WRITE_TOOLS": "your-value",
        "NEXUS_MCP_ENABLE_RAW_API": "your-value"
      }
    }
  }
}

Run this in your terminal

claude mcp add nexus --env NEXUS_URL=your-value --env NEXUS_USERNAME=your-value --env NEXUS_PASSWORD=your-value --env NEXUS_VERIFY_TLS=your-value --env NEXUS_MCP_MODE=your-value --env NEXUS_MCP_ENABLE_WRITE_TOOLS=your-value --env NEXUS_MCP_ENABLE_RAW_API=your-value -- docker run -i --rm -e NEXUS_URL -e NEXUS_USERNAME -e NEXUS_PASSWORD -e NEXUS_VERIFY_TLS -e NEXUS_MCP_MODE -e NEXUS_MCP_ENABLE_WRITE_TOOLS -e NEXUS_MCP_ENABLE_RAW_API ghcr.io/oomchiller/nexus-mcp-server:0.2.1

Fill in the empty values before running it.

Open in Cursor

Or copy the settings yourself

Paste into .cursor/mcp.json in your project, or ~/.cursor/mcp.json

{
  "mcpServers": {
    "nexus": {
      "command": "docker",
      "args": [
        "run",
        "-i",
        "--rm",
        "-e",
        "NEXUS_URL",
        "-e",
        "NEXUS_USERNAME",
        "-e",
        "NEXUS_PASSWORD",
        "-e",
        "NEXUS_VERIFY_TLS",
        "-e",
        "NEXUS_MCP_MODE",
        "-e",
        "NEXUS_MCP_ENABLE_WRITE_TOOLS",
        "-e",
        "NEXUS_MCP_ENABLE_RAW_API",
        "ghcr.io/oomchiller/nexus-mcp-server:0.2.1"
      ],
      "env": {
        "NEXUS_URL": "your-value",
        "NEXUS_USERNAME": "your-value",
        "NEXUS_PASSWORD": "your-value",
        "NEXUS_VERIFY_TLS": "your-value",
        "NEXUS_MCP_MODE": "your-value",
        "NEXUS_MCP_ENABLE_WRITE_TOOLS": "your-value",
        "NEXUS_MCP_ENABLE_RAW_API": "your-value"
      }
    }
  }
}

Your browser asks to open the app, then the app shows the settings and asks you to confirm. Key values are left empty for you to fill in.

Open in VS Code

Or copy the settings yourself

Paste into .vscode/mcp.json in your project

{
  "servers": {
    "nexus": {
      "type": "stdio",
      "command": "docker",
      "args": [
        "run",
        "-i",
        "--rm",
        "-e",
        "NEXUS_URL",
        "-e",
        "NEXUS_USERNAME",
        "-e",
        "NEXUS_PASSWORD",
        "-e",
        "NEXUS_VERIFY_TLS",
        "-e",
        "NEXUS_MCP_MODE",
        "-e",
        "NEXUS_MCP_ENABLE_WRITE_TOOLS",
        "-e",
        "NEXUS_MCP_ENABLE_RAW_API",
        "ghcr.io/oomchiller/nexus-mcp-server:0.2.1"
      ],
      "env": {
        "NEXUS_URL": "your-value",
        "NEXUS_USERNAME": "your-value",
        "NEXUS_PASSWORD": "your-value",
        "NEXUS_VERIFY_TLS": "your-value",
        "NEXUS_MCP_MODE": "your-value",
        "NEXUS_MCP_ENABLE_WRITE_TOOLS": "your-value",
        "NEXUS_MCP_ENABLE_RAW_API": "your-value"
      }
    }
  }
}

Your browser asks to open the app, then the app shows the settings and asks you to confirm. Key values are left empty for you to fill in.

This one runs on your computer, and ChatGPT can only connect to servers on the internet. Pick another app.

Your choice stays on this device in a cookie; no account needed.

Values you fill in

NEXUS_URL required env
Nexus base URL, for example https://nexus.example.com
NEXUS_USERNAME env
Nexus user; a read-only account is recommended
NEXUS_PASSWORD secret env
Password for NEXUS_USERNAME
NEXUS_VERIFY_TLS env
Verify the Nexus TLS certificate
NEXUS_MCP_MODE env
readonly, audit or admin
NEXUS_MCP_ENABLE_WRITE_TOOLS env
With admin mode, list and allow repository deletion and task runs
NEXUS_MCP_ENABLE_RAW_API env
List the nexus_api_call tool for REST paths under /service/rest/

These settings are generated from the maker’s registry entry. If the README says otherwise, follow the README.

What it can do

Runs on your computer; the tool list appears in your AI app after you install it.

Basic checksi

We check information anyone can see; we have not read the code. Checks that do not apply are left out of the count. · Checked Nov 7, 2026

✓ Pass
Maker matches the repo
The registry name was verified with the GitHub account oomchiller, which owns the repo
… Not checked yet
Still maintained
We have not read this repo from GitHub yet
… Not checked yet
Has a licence
We have not read this repo from GitHub yet
– Not applicable
Endpoint responds
This one runs on your computer; there is no internet endpoint
– Not applicable
Sign-in with OAuth
Runs on your computer and uses local settings instead
… Not checked yet
No hidden instructions in tool descriptions
Runs on your computer; we can only read tool lists from internet endpoints

Compared with others in Developer toolsi

More stars than 0% of the other 4907 servers in this category
Published to the registry more recently than 90% of the other 4907 servers in this category
Basic checks equal to or better than 100% of the other 4907 servers in this category

Compared with every active server in this category in the registry. Stars count only when the publisher owns the repo.

Common questions

Is Sonatype Nexus safe?

It passed 1 of 1 applicable basic checks. We have not read the code. Before adding a key or token, see what access the server asks for and use a key with only the permissions you need.

What keys or codes does it need?

You need to fill in: NEXUS_URL, NEXUS_PASSWORD

Does it run on my computer or in the cloud?

It runs on your computer. Your AI app starts it when needed, and data does not pass through the maker’s servers (unless it calls an online service itself).

Is it still maintained?

The GitHub repo last changed –, and the latest version (0.2.1) reached the registry 4 days ago.

Which apps can use it?

Apps that support MCP, such as Claude Desktop, Claude Code, Cursor and VS Code. You also need Docker on your computer.

What can I use instead?

In the same category: GitHub, Desktop Commander, Cloudflare MCP

Alternatives

Servers in the same category from other makers, sorted by stars.

Reading a card:★ GitHub starsiThree pillars: reviews · checks · usageiUpdated = latest version published to the registryi

GitHub

by github

GitHub’s official server lets AI read and manage code, issues and pull requests in your account. Use GitHub’s hosted version or run it locally with Docker.

Computer or cloud★ 34,245MITUpdated 4 days ago

Install

Desktop Commander

by wonderwhy-er

MCP server for terminal commands, file operations, and process management

Runs on your computer★ 10,225MITUpdated 16 days ago

Install

Cloudflare MCP

by cloudflare

Cloudflare MCP servers

Runs in the cloud★ 4,446Apache-2.0Updated 14 months ago

Install

README from the maker

Open the README

Copied from the maker’s repo as written. PopNx MCP has not reviewed or endorsed it. HTML, images and scripts are removed. Links lead off this site.

Sonatype Nexus MCP Server

A Model Context Protocol server that lets AI assistants inspect, audit and document a Sonatype Nexus Repository Manager 3.x instance. It is read-only by default; administrative tools are not even listed unless you enable them.

flowchart LR

AI[MCP client] <-->|stdio / Streamable HTTP| Server[nexus-mcp-server] Server <-->|REST API| Nexus[Nexus Repository 3.x]

Features

Inventory of repositories, blob stores, tasks, cleanup policies, routing rules, content selectors, users, roles and privileges, as far as the configured account can see them.
A relationship graph (repository → blob store, group → members, repository → cleanup policy, role → privilege) behind architecture explanations, risk checks and generated Markdown documentation.
Bounded full-content audit of one repository, with completion evidence.
Drift check of repositories against a declared state.
OpenAPI discovery of the instance's REST operations.
Every tool declares readOnlyHint, destructiveHint, idempotentHint and openWorldHint; outputs and logs redact the configured password and secret-looking keys.
Starts without configuration, so clients and registries can list its tools; calls then report what is missing.

Used in production in read-only mode on Nexus Pro 3.96.1-01; partially verified on OSS 3.70. See docs/COMPATIBILITY.md.

Quick start

The server is listed in the MCP Registry as io.github.oomchiller/nexus-mcp-server; registry-aware clients can install it from there. Manual setup:

Container

docker run --rm -i \

-e NEXUS_URL=https://nexus.example.com \ -e NEXUS_USERNAME=readonly-user \ -e NEXUS_PASSWORD \ ghcr.io/oomchiller/nexus-mcp-server:0.2.1

Images are published for linux/amd64 and linux/arm64, run as an unprivileged user over stdio, and are configured through the environment only. Release digests are listed on the releases page.

Local process

"mcpServers": { "nexus": { "command": "uvx", "args": ["--from", "git+https://github.com/oomchiller/nexus-mcp-server@v0.2.1", "nexus-mcp-server"], "env": { "NEXUS_URL": "https://nexus.example.com", "NEXUS_USERNAME": "readonly-user", "NEXUS_PASSWORD": "change-me" } } } }

More client examples (Claude Desktop, Codex CLI, Gemini CLI) are in examples/.

Configuration

Settings come from the environment or a .env file in the working directory.

Variable	Default	Meaning
`NEXUS_URL`	unset	Nexus base URL. Without it the server starts, and calls report that Nexus is not configured.
`NEXUS_USERNAME` / `NEXUS_PASSWORD`	unset	Basic authentication. Use a read-only Nexus account.
`NEXUS_VERIFY_TLS`	`true`	Verify the Nexus TLS certificate.
`NEXUS_CA_BUNDLE`	unset	PEM file of CA certificates to trust instead of the public roots; needs `NEXUS_VERIFY_TLS=true`.
`NEXUS_TIMEOUT_SECONDS`	`30`	HTTP timeout.
`NEXUS_ALLOWED_HOSTS`	host of `NEXUS_URL`	Comma-separated hosts the client may contact.
`NEXUS_LOG_LEVEL`	`INFO`	Log level (stderr).
`NEXUS_MCP_MODE`	`readonly`	`readonly`, `audit` (same gates as `readonly`) or `admin`.
`NEXUS_MCP_ENABLE_WRITE_TOOLS`	`false`	With `admin`, lists and allows the write tools.
`NEXUS_MCP_ENABLE_RAW_API`	`false`	Lists `nexus_api_call`.
`NEXUS_MCP_RAW_API_GET_ONLY`	`false`	Restrict `nexus_api_call` to `GET`.
`NEXUS_MCP_MAX_RAW_RESPONSE_BYTES`	`1048576`	Largest Nexus response accepted.
`NEXUS_MCP_GRAPH_TTL_SECONDS`	`60`	How long graph tools reuse one Knowledge Graph build; `0` rebuilds on every call.
`NEXUS_MCP_ENABLE_PROMPTS`	`true`	Register prompts.
`NEXUS_MCP_ENABLE_RESOURCES`	`true`	Register resources.

Token authentication is not implemented.

The server does not read SSL_CERT_FILE or the system trust store. For a Nexus behind a private CA, set NEXUS_CA_BUNDLE rather than disabling verification. An unreadable bundle, or a bundle with verification disabled, stops the server at startup.

Gateways that run several instances side by side and prefix only tool names (Docker MCP Gateway) should set NEXUS_MCP_ENABLE_PROMPTS=false and NEXUS_MCP_ENABLE_RESOURCES=false.

Command line

--transport {stdio,sse,streamable-http}   default stdio

--host HOST / --port PORT HTTP bind, default 127.0.0.1:8000, no authentication --nexus-url URL overrides NEXUS_URL --nexus-username USERNAME overrides NEXUS_USERNAME --verify-ssl / --no-verify-ssl overrides NEXUS_VERIFY_TLS --ca-bundle PATH overrides NEXUS_CA_BUNDLE

Keep NEXUS_PASSWORD in the environment, not on the command line.

Tools

Group	Tools
Explanation	`nexus_understand_architecture`, `nexus_explain_repository`, `nexus_explain_storage_strategy`
Inventory and documentation	`nexus_generate_inventory_json`, `nexus_generate_architecture_md`, `nexus_generate_repository_catalog_md`, `nexus_audit_repository_content`
Audit	`nexus_detect_architecture_smells`, `nexus_generate_audit_report`
Drift	`nexus_compare_live_state_with_declared_state`
OpenAPI	`nexus_openapi_list_operations`, `nexus_generate_capability_map`

Listed only when enabled:

Tool	Requires
`nexus_api_call`	`NEXUS_MCP_ENABLE_RAW_API=true`; paths are canonicalized and restricted to `/service/rest/`.
`nexus_delete_repository`, `nexus_run_task`	`NEXUS_MCP_MODE=admin` and `NEXUS_MCP_ENABLE_WRITE_TOOLS=true`.

Resources: nexus://instance/summary, nexus://repositories, nexus://blobstores, nexus://tasks, nexus://cleanup-policies, nexus://security/summary, nexus://architecture, nexus://knowledge_graph. Prompts: nexus_audit_prompt, nexus_iac_drift_prompt.

Limits worth knowing: drift compares repository name, format and type only; risk checks cover a small set of graph rules; findings are only as complete as the REST APIs visible to the account. Optional endpoints that are missing for version, edition or permission reasons appear as limitations, not failures.

Safety

Read-only by default. Write tools and the raw API are not listed unless enabled, and every write is still checked against the mode at call time.
The client contacts only NEXUS_ALLOWED_HOSTS and only paths relative to NEXUS_URL.
Redaction is defence in depth, not a substitute for a least-privilege Nexus account. See SECURITY.md.

Development

uv sync --locked

uv run pytest uv run ruff check . && uv run ruff format --check . uv run mypy src tests

See CONTRIBUTING.md, ARCHITECTURE.md, DECISIONS.md and ROADMAP.md.

License

MIT; see LICENSE.

Sonatype Nexus

Overview

PopNx MCP’s three pillars

What you can do with it

Install

Before you install

Values you fill in

What it can do

Basic checksi

Maker matches the repo

Still maintained

Has a licence

Endpoint responds

Sign-in with OAuth

No hidden instructions in tool descriptions

Compared with others in Developer toolsi

Common questions

Alternatives

GitHub

Desktop Commander

Cloudflare MCP

README from the maker

Sonatype Nexus MCP Server

Features

Quick start

Container

Local process

Configuration

Command line

Tools

Safety

Development

License