Aggrete

Name: Aggrete
Author: Aggrete

by Aggreteversion 0.8.3i★ 2 (Stars for the whole repo)iRuns on your computer

Registry nameio.github.Aggrete/aggrete

How to install

What it does

MCP policy proxy: enforces a code of conduct across connectors before the upstream is called.

Connects Runs on your computer
Account or key No key needed
Category Developer tools

Install

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

Passed 3/3 checks · Runs on your computer

First: which AI do you use?

ClaudeWeb · app · phoneChatGPTWebClaude CodeTerminalCursorCode editorVS CodeCode editorOtherOther apps

Pick your app and the steps appear below.

Works with Claude, with some setup first

Install Python (uv) on your computer first (one time) · Only the Claude desktop app (Windows or Mac), not the web or phone

Install Python (uv)
One time only; it works for every server that needs Python (uv)
Open the Python (uv) download page ↗
Done
Open the Claude desktop app’s settings file
SettingsDeveloperEdit Config
Done

Paste these settings and save the file

{
  "mcpServers": {
    "aggrete": {
      "command": "uvx",
      "args": [
        "aggrete"
      ]
    }
  }
}

Done

Quit Claude and open it again
Done
Try it
Use Aggrete and tell me what you can do for me, then show me one thing
✓ If Claude says it is using Aggrete or shows a Aggrete tool in the answer, you are connected

Menu names checked against Anthropic’s help page on Nov 11, 2026 · your screen may differ slightly by app version

ChatGPT cannot connect Aggrete yet

Aggrete runs on your computer, but ChatGPT can only connect servers that run on the web

What you can do instead

A · Use an app that can connect Aggrete

Steps for Claude →Install Python (uv) on your computer first (one time) · Only the Claude desktop app (Windows or Mac), not the web or phone
Steps for Claude Code →Install Python (uv) on your computer first (one time)
Steps for Cursor →Install Python (uv) on your computer first (one time)
Steps for VS Code →Install Python (uv) on your computer first (one time)

B · Others in Developer tools that work with ChatGPT

Picked from the most used in the same category, only ones that connect by address with no key

Sentry✓ ChatGPT
Compiler Explorer✓ ChatGPT
GitDiagram✓ ChatGPT

Works with Claude Code, with some setup first

Install Python (uv) on your computer first (one time)

Install Python (uv)
One time only; it works for every server that needs Python (uv)
Open the Python (uv) download page ↗
Done
Open Terminal
Mac: press Command+Space and type Terminal · Windows: open PowerShell
Done

Paste this command and press Enter

claude mcp add --scope user aggrete -- uvx aggrete

Done

Type /mcp in Claude Code
You should see Aggrete listed as connected
Done
Try it
Use Aggrete and tell me what you can do for me, then show me one thing
✓ If Claude Code says it is using Aggrete or shows a Aggrete tool in the answer, you are connected

Menu names checked against Anthropic’s help page on Nov 11, 2026 · your screen may differ slightly by app version

Works with Cursor, with some setup first

Install Python (uv) on your computer first (one time)

Install Python (uv)
One time only; it works for every server that needs Python (uv)
Open the Python (uv) download page ↗
Done
Click this button to open Cursor
Open in Cursor
Cursor asks you to confirm; click Install
Done
Open the AI chat in Cursor in Agent mode
Done
Try it
Use Aggrete and tell me what you can do for me, then show me one thing
✓ If Cursor says it is using Aggrete or shows a Aggrete tool in the answer, you are connected

Menu names checked against Cursor’s help page on Nov 11, 2026 · your screen may differ slightly by app version

Works with VS Code, with some setup first

Install Python (uv) on your computer first (one time)

Install Python (uv)
One time only; it works for every server that needs Python (uv)
Open the Python (uv) download page ↗
Done
Click this button to open VS Code
Open in VS Code
VS Code asks you to confirm; click Install
Done
Open the AI chat in VS Code in Agent mode
Done
Try it
Use Aggrete and tell me what you can do for me, then show me one thing
✓ If VS Code says it is using Aggrete or shows a Aggrete tool in the answer, you are connected

Menu names checked against VS Code’s help page on Nov 11, 2026 · your screen may differ slightly by app version

Other apps that use MCP, such as Windsurf, Zed or Gemini CLI, each add servers differently. See how in the app list.

See every app that uses MCP →

JSON settings are under “For developers” below

Stuck? Ask people who use Aggrete💬 Discussion →

For developers: Terminal commands and JSON settings

Installed on your computer

Claude Code

claude mcp add --scope user aggrete -- uvx aggrete

Claude Desktop (claude_desktop_config.json)

{
  "mcpServers": {
    "aggrete": {
      "command": "uvx",
      "args": [
        "aggrete"
      ]
    }
  }
}

Cursor (~/.cursor/mcp.json)

{
  "mcpServers": {
    "aggrete": {
      "command": "uvx",
      "args": [
        "aggrete"
      ]
    }
  }
}

VS Code (mcp.json)

{
  "servers": {
    "aggrete": {
      "type": "stdio",
      "command": "uvx",
      "args": [
        "aggrete"
      ]
    }
  }
}

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

At a glance

GitHub stars i: 2 (Stars for the whole repo)
This repo holds several MCP listings; its stars count once in rankings
Downloads per weeki: 72/wk
Licence i: Apache-2.0
Connection: Runs on your computer
Transport: stdio
Latest versioni: 0.8.3
Categoryi: Developer tools
Published to registryi: Sep 7, 2026
Code last changedi: Oct 16, 2026
Maker: Aggrete
Packages: pypi: aggrete
Repo: aggrete/aggrete
Registry status: Active

Which apps can use it

Based on how this server connects and on each app’s own docs, checked Nov 10, 2026.

Run on your computer in

Claude Goose LM Studio Msty Studio Cherry Studio Cursor VS Code + GitHub Copilot Visual Studio Windsurf (Devin Desktop)Zed Kiro Cline Continue JetBrains AI Assistant Claude Code Codex CLI Gemini CLI OpenCode nodecode Warp LibreChat Raycast

All apps, with pros and cons →

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 12, 2026

✓ Pass
Maker matches the repo
The registry name was verified with the GitHub account aggrete, which owns the repo
✓ Pass
Still maintained
Code last changed 27 days ago
✓ Pass
Has a licence
Uses Apache-2.0
– 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

Discussion

Ask, share a tip or report that it does not work. Sorted by what people marked helpful.

No posts yet. Be the first to ask or share.

Posts here are written by users, not the PopNx team.

User reviews

No reviews yet

Compared with others in Developer toolsi

More stars than 0% of the other 5819 servers in this category
Published to the registry more recently than 33% of the other 5819 servers in this category
Basic checks equal to or better than 100% of the other 5819 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 Aggrete safe?

It passed 3 of 3 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 27 days ago, and the latest version (0.8.3) reached the registry 2 months 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: REA, GitHub, Serena MCP: the IDE for your agent

Others in the same category

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

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

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GitHub

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Install

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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.

Aggrete

An MCP proxy that enforces a code-of-conduct document across connectors, with per-user memory that accumulates across calls.

Four individually-authorized questions can assemble a layoff list — no single one is sensitive, so no guardrail fires. Aggrete is the layer that catches the *combination*: is this call, together with everything this person already pulled today, something the code of conduct forbids?

[Try it live](https://try.aggrete.com) — nothing to install · or uvx aggrete --demo

Start with a scan

pip install aggrete && aggrete scan

Finds every MCP server your clients use, connects to each, and prints what no per-server scanner does: tool combinations across servers that form a leak path, hidden instructions in descriptions, secrets in client configs, servers that bypass the proxy. --fix writes the config and policy that close them. Details.

Install

pip install aggrete                 # or: uv tool install aggrete

uvx aggrete --demo # the walkthrough — no config, auth, or network aggrete --config proxy.config.yaml # run it for real

The one example

The check tool dry-runs a plan and returns the verdict before anything is fetched:

Plan check: REFUSED.

hr__recent_joiners [hr-personnel] -> allowed
finance__budget_roles [finance-comp] -> allowed
ops__oncall_draft [ops-rota] -> REFUSED COC-HR-004 Personnel, compensation, and operational rosters may not be combined to derive the planned departure of identifiable individuals.

Each call is fine alone. The third completes a forbidden set across three domains that overlap on the same people, so it's denied before the upstream call — the data is never fetched.

What it does

Refuses before fetching, using a YAML policy and per-user memory across calls and sessions — not single-call authorization.
Redacts emails, SSNs, cards, and tokens from results before they reach the model; hides walled tools from users who can't call them.
Shields against prompt injection — any write after a session reads untrusted content is refused — and against tool poisoning, flagging hidden instructions in tool descriptions.
Holds upstream credentials itself (confused-deputy safe), with optional per-user on-behalf-of access.
Audits tamper-evidently — every decision is one hash-chained JSON line (aggrete-audit), forwarded to a SIEM or an OpenTelemetry collector, with Prometheus metrics and health endpoints for operations.
Ask before you act — check previews any sequence, scenarios lists things to try.
Hold for a human — action: approve pauses a call until the clause owner approves it, from Slack, the terminal, or the console; the approval is a time-limited, audited grant.

Learn more

[Writing policy](docs/POLICY.md) — the coc.yaml schema, rule types, arg_match, and drafting from your handbook with aggrete-ingest
[Deploying](docs/DEPLOY.md) — architecture, the deploy matrix, HTTP + OAuth, connecting Claude, and per-user credentials
[Building a connector](docs/CONNECTORS.md) — expose read/write tools and govern any system (Google Drive is the reference)
[Adapter mode](docs/ADAPTERS.md) — run the engine inside agentgateway (native ExtMCP over gRPC, aggrete extmcp), Docker MCP Gateway, IBM ContextForge or any AuthZEN-speaking gateway
[What it does not stop](docs/LIMITS.md) — supply chain, host execution, client bugs, memory poisoning: where a proxy is the wrong control and what is
[Scanning](docs/SCAN.md) — aggrete scan hardens an existing MCP setup: cross-server leak paths, poisoned descriptions, secrets in configs, proxy bypasses, and a one-command fix
[Conformance](docs/CONFORMANCE.md) — aggrete conformance runs sixteen checks against the real components and maps them onto the OWASP MCP Top 10, OWASP Agentic Top 10, CoSAI and AIUC-1; --url runs the same scenarios black-box against any gateway (latest report)
[Roadmap](ROADMAP.md) — shipped, in progress, and planned
[Agent skill](skills/aggrete/SKILL.md) — teach Claude Code or any MCP client to set up and operate Aggrete: /plugin marketplace add aggrete/aggrete, or read skill://aggrete/SKILL.md from a running proxy

Honest limitations

Post-call denial redacts, it does not un-fetch — prefer rules decidable pre-call.
stdio identity is advisory — real enforcement needs streamable HTTP with OAuth and IdP-level blocking of direct connector grants, so the proxy is the only path.
Aggregation can only be narrowed, not solved — a user who spaces requests beyond the window, or paraphrases across systems the proxy doesn't front, gets through. This raises the cost and creates the audit trail; it isn't a ceiling.
Not a gateway — no multi-tenancy, token vault, or HA. For production, run it behind agentgateway, Docker's gateway or IBM ContextForge and let them call it (adapter mode).

mcp-name: io.github.aggrete/aggrete

Aggrete

What it does

Install

Install Python (uv)

Open the Claude desktop app’s settings file

Paste these settings and save the file

Quit Claude and open it again

Try it

What you can do instead

Install Python (uv)

Open Terminal

Paste this command and press Enter

Type /mcp in Claude Code

Try it

Install Python (uv)

Click this button to open Cursor

Open the AI chat in Cursor in Agent mode

Try it

Install Python (uv)

Click this button to open VS Code

Open the AI chat in VS Code in Agent mode

Try it

Installed on your computer

At a glance

Which apps can use it

Related guides

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

Discussion

User reviews

Compared with others in Developer toolsi

Common questions

Others in the same category

REA

GitHub

Serena MCP: the IDE for your agent

README from the maker

Aggrete

Start with a scan

Install

The one example

What it does

Learn more

Honest limitations