MCP Composer

Name: MCP Composer
Author: oaslananka

by oaslanankaversion 1.0.0i★ –iRuns on your computer

Registry nameio.github.oaslananka/composer

Install

Overview

Description from the maker (original English)

Aggregate multiple MCP backends behind a single stdio endpoint with namespaced routing.

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: Other

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: COMPOSER_CONFIG

You need

npmNode.js installed (for the npx command)

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": {
    "composer": {
      "command": "npx",
      "args": [
        "-y",
        "@oaslananka/composer"
      ],
      "env": {
        "COMPOSER_CONFIG": "your-value"
      }
    }
  }
}

Run this in your terminal

claude mcp add composer --env COMPOSER_CONFIG=your-value -- npx -y @oaslananka/composer

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": {
    "composer": {
      "command": "npx",
      "args": [
        "-y",
        "@oaslananka/composer"
      ],
      "env": {
        "COMPOSER_CONFIG": "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": {
    "composer": {
      "type": "stdio",
      "command": "npx",
      "args": [
        "-y",
        "@oaslananka/composer"
      ],
      "env": {
        "COMPOSER_CONFIG": "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

COMPOSER_CONFIG env
Path to the composer.yml backend definition file.

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 oaslananka, 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 Otheri

More stars than 0% of the other 32623 servers in this category
Published to the registry more recently than 6% of the other 32623 servers in this category
Basic checks equal to or better than 100% of the other 32623 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 MCP Composer 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?

The registry does not list a required key, though some servers ask you to sign in on first use.

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 (1.0.0) reached the registry 7 months ago.

Which apps can use it?

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

What can I use instead?

In the same category: Spec Driven Development, Remote Desktop Commander, Draugr

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

Spec Driven Development

by formulahendry

MCP Server that facilitates spec-driven development workflows, not just Vibe Coding.

Runs on your computer★ 440MITUpdated 14 months ago

Install

Remote Desktop Commander

by desktop-commander

Remote Desktop Commander: use files, terminal and processes on your own computers from any AI app.

Runs in the cloud★ 211Updated 2 days ago

Install

Draugr

by draugr-dev

Security scanning for AI agents: SAST, SCA, secrets, IaC, DAST, ranked by real risk.

Runs on your computerUpdated today

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.

MCP Infrastructure Suite

The missing infrastructure layer for Model Context Protocol ecosystems.

flowchart LR

Shared["@oaslananka/shared"] Forge["@oaslananka/forge"] Sentinel["@oaslananka/sentinel"] Atlas["@oaslananka/atlas"] Composer["@oaslananka/composer"] Bridge["@oaslananka/bridge"] Observatory["@oaslananka/observatory"] Lab["@oaslananka/lab"]

Shared --> Forge Shared --> Sentinel Shared --> Atlas Shared --> Composer Shared --> Bridge Shared --> Observatory Shared --> Lab

Clients["IDE / Agent / SDK clients"] --> Sentinel Clients --> Composer Composer --> Backends["Backend MCP servers"] Sentinel --> Backends Forge --> Composer Forge --> Sentinel Atlas --> Clients Observatory --> Sentinel Observatory --> Forge Lab --> Composer

Why mcp-suite?

Most MCP projects stop at the server boundary. mcp-suite focuses on the harder production layer around it: transport compatibility, trust boundaries, orchestration, discovery, observability, and operator workflows. That makes it useful once you move past a single local demo and start running MCP in teams, CI, or internal platforms.

The suite is built for guarded GitHub-hosted release automation, with every publishable package prepared for public npm publishing under the @oaslananka scope. The monorepo stays strict TypeScript, Turborepo, pnpm, and release-please manifest based.

Compared with one-off MCP utilities, the packages here are designed to compose: shared defines the protocol/runtime baseline, sentinel and composer control traffic, forge orchestrates work, atlas catalogs capability, bridge generates servers, observatory closes the feedback loop, and lab gives contributors a desktop workbench.

Packages

Package	What it does	Docs
`@oaslananka/shared`	Shared MCP protocol, transports, auth, retry, telemetry, and testing primitives	Shared docs
`@oaslananka/forge`	Pipeline engine for orchestrating MCP tools and external steps	Forge docs
`@oaslananka/sentinel`	Zero-trust security proxy with audit, approval, and PII controls	Sentinel docs
`@oaslananka/atlas`	Registry API and catalog UI for discovering MCP servers	Atlas docs
`@oaslananka/composer`	Aggregation proxy for multiple backend MCP servers	Composer docs
`@oaslananka/bridge`	OpenAPI and schema-first MCP server generation	Bridge docs
`@oaslananka/observatory`	Metrics, traces, anomaly detection, alerting, and dashboard UI	Observatory docs
`@oaslananka/lab`	Electron desktop workbench for connecting to and debugging MCP servers	Lab docs

MCP Lab Screenshot

Local Playground

The reproducible demo path is a local playground with seeded Atlas and Observatory data:

pnpm install --frozen-lockfile

pnpm build pnpm run playground:seed pnpm run playground:atlas

Then start Observatory in another terminal:

pnpm run playground:observatory

Open Atlas at http://localhost:4003, Observatory at http://localhost:4006, and Lab with pnpm --filter @oaslananka/lab dev. Full steps live in the local playground guide.

Quick Start

pnpm install --frozen-lockfile

pnpm build

Seed and run Atlas

pnpm --filter @oaslananka/atlas exec node dist/cli.js seed --db ./data/atlas.sqlite pnpm --filter @oaslananka/atlas exec node dist/cli.js serve --db ./data/atlas.sqlite --port 4003

In another terminal, run Observatory

pnpm --filter @oaslananka/observatory exec node dist/cli.js serve --db ./data/observatory.sqlite --port 4006

Once the services are up:

Atlas UI: http://localhost:4003
Atlas health: http://localhost:4003/health
Observatory UI: http://localhost:4006
Observatory health: http://localhost:4006/health

Architecture

shared carries the protocol baseline, logger factory, transports, telemetry helpers, and test fixtures used everywhere else. MCP client-facing traffic is typically wrapped by sentinel for policy and audit, then aggregated through composer, or orchestrated from forge. atlas and observatory are HTTP-first operator surfaces, while lab is the developer-facing desktop entry point.

The suite currently defaults to MCP protocol version 2025-11-25 while keeping compatibility helpers for 2025-11-05 handshakes during the 1.0 transition.

Architecture decisions are recorded in the ADR index.

Development

make install

pnpm run format:check make lint make typecheck make test pnpm run security make test-coverage make knip pnpm run release:dry-run

More setup and workflow guidance lives in docs/development.md, docs/testing.md, docs/security.md, docs/release.md, the generated API reference path in docs/api-reference.md, and the guide docs under docs/guide.

Release Policy

release-please manifest mode owns version bumps, changelogs, tags, and GitHub releases.
GitHub Actions builds npm package tarballs, a machine-readable release manifest, SBOM, checksums, and attestations from clean checkout state.
Production npm publishing is separate, environment-protected, and uses npm trusted publishing/OIDC after checksum, attestation, package-content, and clean-install verification.
Partial npm publication is resumable: identical immutable versions are skipped, missing versions publish in dependency order, and integrity conflicts fail closed.
Docs-only, internal-only, and CI-only changes do not publish to npm or update registry metadata.

Contributing

Contributions are welcome. Start with CONTRIBUTING.md, use Conventional Commits for user-visible changes, and keep GitHub Actions parity when adding validation steps. For issue triage, support, stale handling, labels, and maintainer response targets, see docs/governance.md.

Roadmap

@oaslananka/gateway: HTTP-first multi-tenant MCP gateway
@oaslananka/sdk: cross-language SDK surface starting with Python
Forge visual editor built on React Flow
Atlas federation across multiple registry instances
Observatory exports for Grafana and OTel collector pipelines
Sentinel policy integration with OPA

MCP Composer

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 Otheri

Common questions

Alternatives

Spec Driven Development

Remote Desktop Commander

Draugr

README from the maker

MCP Infrastructure Suite

Why mcp-suite?

Packages

MCP Lab Screenshot

Local Playground

Quick Start

Seed and run Atlas

In another terminal, run Observatory

Architecture

Development

Release Policy

Contributing

Roadmap

License