Topos

Name: Topos
Author: Krv-Labs

by Krv-Labsversion 0.15.0i★ –iRuns on your computer

Registry nameio.github.Krv-Labs/topos

Install

Overview

Description from the maker (original English)

Structural code-quality tools for AI coding agents.

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).
The registry lists no key to fill in.

You need

PyPIPython’s uv installed (for the uvx 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": {
    "topos": {
      "command": "uvx",
      "args": [
        "topos-mcp"
      ]
    }
  }
}

Run this in your terminal

claude mcp add topos -- uvx topos-mcp

Open in Cursor

Or copy the settings yourself

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

{
  "mcpServers": {
    "topos": {
      "command": "uvx",
      "args": [
        "topos-mcp"
      ]
    }
  }
}

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": {
    "topos": {
      "type": "stdio",
      "command": "uvx",
      "args": [
        "topos-mcp"
      ]
    }
  }
}

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.

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 Krv-Labs, 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 32688 servers in this category
Published to the registry more recently than 81% of the other 32688 servers in this category
Basic checks equal to or better than 100% of the other 32688 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 Topos 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 (0.15.0) reached the registry 8 days ago.

Which apps can use it?

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

What can I use instead?

In the same category: Spec Driven Development, Remote Desktop Commander, 御府和田玉在售作品查询

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

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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

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by 163yu.com

Live in-stock Hetian jade from Yufu, Shanghai: prices, monthly price guide, book a viewing.

Runs in the cloudUpdated 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.

the agent harness for structural code quality

Topos measures complexity, coupling, risky data flows, and agent cognitive load, then gives your agent a concrete target—from SLOP to PLATINUM.

Install · What it checks · Under the hood · Docs · Issues

Why Topos

Coding agents produce working code quickly. The harder question is whether the result is still easy to understand, safe to change, and well-fitted to the rest of the repository. [Quality is the new currency.](https://krv.ai/field-notes/evaluating-code-generation)

Topos computes that signal from program structure—not from an LLM review or a style opinion—and returns concrete failure locations and next actions. It is fast enough to sit inside the agent loop: measure, edit, verify, repeat.

Tests check behavior. Topos checks whether the implementation is built to keep changing.

Grounded in category theory, written in Rust.

Install and Quick Start

One binary. Every supported agent harness. A clean way back out.

1. Install the CLI

Use the verified release installer:

curl -fsSL https://docs.krv.ai/topos/install.sh | bash

Or install with Homebrew:

brew install krv-labs/tap/topos

On Homebrew 6+, that fully qualified one-liner auto-taps and trusts only this formula. If you brew tap krv-labs/tap first, run brew trust --formula krv-labs/tap/topos before brew install topos.

[!TIP]

Prefer an editor-managed install? In VS Code or Cursor, search @mcp topos in the Extensions view or choose Install MCP server. This is an alternative to topos install: your editor installs and manages the Topos MCP server for you.

2. Connect your coding agents

topos install detects every supported MCP harness and lets you configure any—or all—of them from one interactive checklist:

topos install

┌  Which agent integrations do you want to configure?

│ │ ↑↓ move · space toggle · a all · enter confirm · esc cancel │ │ ❯ ○ Claude Code (detected) │ ○ Claude Desktop (detected) │ ● Codex CLI (✓ active) │ ● Gemini CLI (✓ active) │ ○ GitHub Copilot CLI (detected) │ ○ Cursor (detected) │ ○ VS Code (detected) │ ○ Google Antigravity (detected) │ ○ pi (detected) │ ○ OpenCode (detected) └

Restart the agents you configured, then ask:

*"Use Topos to find this repository's worst structural problem, make one focused improvement, and verify the result."*

[!IMPORTANT]

Too many tools spray MCP servers across agent JSON files, scatter symlinks around your machine, then leave you to burn half a Claude session untangling the mess—or pull your own hair out doing it. Topos does not play that game. We follow a leave-no-trace policy for harness installation state: topos status shows every registration, while `topos uninstall` opens the same selector, previews exactly what will change, and removes everything it added to your harness configs. Shared cache bookkeeping and repository-scoped cache leases are not installation state, so uninstall leaves them alone and reports any shared bookkeeping it keeps; generated PR caches are removed only by an explicit topos cache clean or topos cache prune. If Topos makes it easy to do, it should be just as easy to undo.

`bash

topos status

topos uninstall

`

See the agent setup guide for permissions, manual configuration, and troubleshooting.

3. Evaluate from the terminal

topos evaluate . -r

Topos discovers Python, Rust, JavaScript, TypeScript, C++, and Go automatically. Pass --language only when you want to narrow the run.

Reviewing a pull request instead? topos pr-recap 5 gives a structural before/after card and debt ledger for the PR's changed files — no LLM, fully reproducible, with presets calibrated across 1,609 open-source pull requests (PR Recap calibration · lab notes).

See Installation for platform support and alternative install paths.

What Topos checks

Every file gets four independent verdicts:

SIMPLE — avoids unnecessary complexity using AST entropy and control-flow complexity.
COMPOSABLE — limits a file's outward dependency burden; broader coupling and stability metrics remain available for diagnosis.
SECURE — avoids dangerous API reachability and taint paths in the code property graph.
NAVIGABLE — stays shallow enough for an agent to read and change in one pass, using depth-weighted nesting divergence over the AST scope tree.

Those verdicts roll up into one memorable quality medal without hiding which pillar failed:

Medal	Criteria
🏆 PLATINUM	Passes all 4
🥇 GOLD	Passes 3 of 4
🥈 SILVER	Passes 2 of 4
🥉 BRONZE	Passes 1 of 4
❌ SLOP	Passes 0, or fails to parse

See the full metrics reference. Refactor guidance also surfaces control-flow cycles, load-bearing dependency edges, and process bottlenecks.

How the medal system is derived

The four pillars are pairwise incomparable and form a sixteen-element evaluation lattice (a 4-cube); PLATINUM is their intersection. Labels below abbreviate the pillars as Simple, Composable, Sc = Secure, Navigable.

Measures · Category-theory foundations

Under the hood

Topos is a self-contained Rust CLI and MCP server. Analysis runs locally; your source code is not sent to an external model or hosted analysis service.

Component	Role
tree-sitter	Parses six languages and powers the native AST, CFG, CPG, PDG, and UAST representations.
GitNexus	Supplies the repository dependency graph scored by COMPOSABLE (`topos depgraph generate`). Requires `npm install -g gitnexus@1.6.8`.
Sighthound	Embedded in the MCP server for supplementary security findings; native CPG probes remain the SECURE scoring source.

The result is one agent-facing contract over several structural lenses: one score to optimize, explicit evidence for each failure, and a verification loop that can tell a real improvement from cosmetic churn.

More ways to use Topos

OpenClaw / ClawHub: openclaw skills install @Krv-Labs/topos
Hermes: hermes skills tap add Krv-Labs/topos then hermes skills install Krv-Labs/topos/topos
Agent Plugins: point a compatible client at agent-plugin/ (spec)
MCP Registry name: io.github.Krv-Labs/topos
CLI reference: docs.krv.ai/topos/cli

Distribution

Topos ships four ways:

GitHub Releases — the topos CLI binary (macOS/Linux), via install.sh or a direct release download.
PyPI — topos-mcp, a thin bin-wheel bundling the MCP server binary (pip install topos-mcp / uvx topos-mcp), zero Python runtime.
VS Code Marketplace — the Topos extension, bundling platform binaries.
Docker — a container image for Glama and other MCP-registry hosting.

Crate layout and adapter details: [docs.krv.ai/topos/architecture](https://docs.krv.ai/topos/architecture.html).

Contributing

Topos is used internally at Krv Labs to manage AI-agent code output. We welcome bugs, ideas, and contributions.

Bug? Open an issue
Idea? Start a discussion or open a PR
Collaborate? team@krv.ai

Full documentation · Measures and metrics · Engineering notes

<img src="https://raw.githubusercontent.com/Krv-Labs/topo

Only the beginning is shown; read the rest in the repo

Topos

Overview

PopNx MCP’s three pillars

What you can do with it

Install

Before you install

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

御府和田玉 在售作品查询

README from the maker

Why Topos

Install and Quick Start

1. Install the CLI

2. Connect your coding agents

3. Evaluate from the terminal

What Topos checks

Under the hood

More ways to use Topos

Distribution

Contributing

御府和田玉在售作品查询