Prototype · Preview: every server in the official registry, synced every 30 minutes. Sign in with Google to write reviews.
PopNx MCPMCP servers for people who use AI · explained in plain words

Glassbox Framework

by TheBarmaEffectversion 1.0.3i★ 11iRuns on your computer
Registry nameio.github.TheBarmaEffect/glassbox-framework

How to install

Overview

Description from the maker (original English)

Runtime constitutional verification for AI answers — claim reasoning, ECS, red team, audits.

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: Search & AI memory
  • You need to fill in: ANTHROPIC_API_KEY

Install

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

Passed 2/2 checks · Runs on your computer

First: which AI do you use?

Pick your app and the steps appear below.

Works with Claude, with some setup first

You need a Glassbox Framework key (sign up on the maker’s site, may cost money) · Install Node.js on your computer first (one time) · Only the Claude desktop app (Windows or Mac), not the web or phone

  1. Install Node.js

    One time only; it works for every server that needs Node.js

    Open the Node.js download page ↗

  2. Sign up and create a Glassbox Framework key

    Open the maker’s site, sign up and create an API key for the next step. It may cost money.

    How to get a key is in the maker’s README below

  3. Open the Claude desktop app’s settings file

    SettingsDeveloperEdit Config

  4. Paste these settings and save the file

    {
      "mcpServers": {
        "glassbox-framework": {
          "command": "npx",
          "args": [
            "-y",
            "@glassbox-framework/mcp"
          ],
          "env": {
            "ANTHROPIC_API_KEY": "your-value",
            "GLASSBOX_MODEL": "your-value",
            "GLASSBOX_MAX_TOKENS": "your-value",
            "GLASSBOX_ECS_MODE": "your-value"
          }
        }
      }
    }

    Paste the key only into the app’s field, never into a chat or to anyone

  5. Quit Claude and open it again

  6. Try it

    Use Glassbox Framework and tell me what you can do for me, then show me one thing

    ✓ If Claude says it is using Glassbox Framework or shows a Glassbox Framework 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 Glassbox Framework yet

Glassbox Framework 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 Glassbox Framework

  • You need a Glassbox Framework key (sign up on the maker’s site, may cost money) · Install Node.js on your computer first (one time) · Only the Claude desktop app (Windows or Mac), not the web or phone
  • You need a Glassbox Framework key (sign up on the maker’s site, may cost money) · Install Node.js on your computer first (one time)
  • You need a Glassbox Framework key (sign up on the maker’s site, may cost money) · Install Node.js on your computer first (one time)
  • You need a Glassbox Framework key (sign up on the maker’s site, may cost money) · Install Node.js on your computer first (one time)

B · Others in Search & AI memory that work with ChatGPT

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

Works with Claude Code, with some setup first

You need a Glassbox Framework key (sign up on the maker’s site, may cost money) · Install Node.js on your computer first (one time)

  1. Install Node.js

    One time only; it works for every server that needs Node.js

    Open the Node.js download page ↗

  2. Sign up and create a Glassbox Framework key

    Open the maker’s site, sign up and create an API key for the next step. It may cost money.

    How to get a key is in the maker’s README below

  3. Open Terminal

    Mac: press Command+Space and type Terminal · Windows: open PowerShell

  4. Paste this command and press Enter

    claude mcp add glassbox-framework --env ANTHROPIC_API_KEY=your-value --env GLASSBOX_MODEL=your-value --env GLASSBOX_MAX_TOKENS=your-value --env GLASSBOX_ECS_MODE=your-value -- npx -y @glassbox-framework/mcp

    Replace “your-value” with your key before pressing Enter

    Paste the key only into the app’s field, never into a chat or to anyone

  5. Type /mcp in Claude Code

    You should see Glassbox Framework listed as connected

  6. Try it

    Use Glassbox Framework and tell me what you can do for me, then show me one thing

    ✓ If Claude Code says it is using Glassbox Framework or shows a Glassbox Framework 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

You need a Glassbox Framework key (sign up on the maker’s site, may cost money) · Install Node.js on your computer first (one time)

  1. Install Node.js

    One time only; it works for every server that needs Node.js

    Open the Node.js download page ↗

  2. Sign up and create a Glassbox Framework key

    Open the maker’s site, sign up and create an API key for the next step. It may cost money.

    How to get a key is in the maker’s README below

  3. Click this button to open Cursor

    Open in Cursor

    Cursor asks you to confirm; click Install

  4. Fill in your key

    In the Glassbox Framework settings, ANTHROPIC_API_KEY, GLASSBOX_MODEL, GLASSBOX_MAX_TOKENS, GLASSBOX_ECS_MODE is empty; add your key and save

    Paste the key only into the app’s field, never into a chat or to anyone

  5. Open the AI chat in Cursor in Agent mode

  6. Try it

    Use Glassbox Framework and tell me what you can do for me, then show me one thing

    ✓ If Cursor says it is using Glassbox Framework or shows a Glassbox Framework 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

You need a Glassbox Framework key (sign up on the maker’s site, may cost money) · Install Node.js on your computer first (one time)

  1. Install Node.js

    One time only; it works for every server that needs Node.js

    Open the Node.js download page ↗

  2. Sign up and create a Glassbox Framework key

    Open the maker’s site, sign up and create an API key for the next step. It may cost money.

    How to get a key is in the maker’s README below

  3. Click this button to open VS Code

    Open in VS Code

    VS Code asks you to confirm; click Install

  4. Fill in your key

    In the Glassbox Framework settings, ANTHROPIC_API_KEY, GLASSBOX_MODEL, GLASSBOX_MAX_TOKENS, GLASSBOX_ECS_MODE is empty; add your key and save

    Paste the key only into the app’s field, never into a chat or to anyone

  5. Open the AI chat in VS Code in Agent mode

  6. Try it

    Use Glassbox Framework and tell me what you can do for me, then show me one thing

    ✓ If VS Code says it is using Glassbox Framework or shows a Glassbox Framework 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 Glassbox Framework💬 Discussion →
For developers: Terminal commands and JSON settings

Installed on your computer

Claude Code

claude mcp add glassbox-framework --env ANTHROPIC_API_KEY=your-value --env GLASSBOX_MODEL=your-value --env GLASSBOX_MAX_TOKENS=your-value --env GLASSBOX_ECS_MODE=your-value -- npx -y @glassbox-framework/mcp

Claude Desktop (claude_desktop_config.json)

{
  "mcpServers": {
    "glassbox-framework": {
      "command": "npx",
      "args": [
        "-y",
        "@glassbox-framework/mcp"
      ],
      "env": {
        "ANTHROPIC_API_KEY": "your-value",
        "GLASSBOX_MODEL": "your-value",
        "GLASSBOX_MAX_TOKENS": "your-value",
        "GLASSBOX_ECS_MODE": "your-value"
      }
    }
  }
}

Cursor (~/.cursor/mcp.json)

{
  "mcpServers": {
    "glassbox-framework": {
      "command": "npx",
      "args": [
        "-y",
        "@glassbox-framework/mcp"
      ],
      "env": {
        "ANTHROPIC_API_KEY": "your-value",
        "GLASSBOX_MODEL": "your-value",
        "GLASSBOX_MAX_TOKENS": "your-value",
        "GLASSBOX_ECS_MODE": "your-value"
      }
    }
  }
}

VS Code (mcp.json)

{
  "servers": {
    "glassbox-framework": {
      "type": "stdio",
      "command": "npx",
      "args": [
        "-y",
        "@glassbox-framework/mcp"
      ],
      "env": {
        "ANTHROPIC_API_KEY": "your-value",
        "GLASSBOX_MODEL": "your-value",
        "GLASSBOX_MAX_TOKENS": "your-value",
        "GLASSBOX_ECS_MODE": "your-value"
      }
    }
  }
}

Values you fill in

  • ANTHROPIC_API_KEY secret required env
    Your Anthropic API key (sk-ant-...). Required for the claim extractor, red team, constitution engines, and ECS coherence checks. One v1 tool (generate_trust_card) works without an API key — it's pure…
  • GLASSBOX_MODEL env
    Override the Claude model used by the verification engines. Defaults to claude-sonnet-4-6.
  • GLASSBOX_MAX_TOKENS env
    Per-engine-call max-tokens cap. Defaults to 2048; raise for verifying long-form content.
  • GLASSBOX_ECS_MODE env
    ECS aggregation mode: arithmetic (weighted mean, default) or geometric (stricter — any zero dimension collapses the total).

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

At a glance

Downloads per weeki
55/wk
Licencei
No licence stated
Connection
Runs on your computer
Latest versioni
1.0.3
Published to registryi
May 25, 2026
Code last changedi
Nov 11, 2026
Maker
TheBarmaEffect
Packages
npm: @glassbox-framework/mcp
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

ClaudeGooseLM StudioMsty StudioCherry StudioCursorVS Code + GitHub CopilotVisual StudioWindsurf (Devin Desktop)ZedKiroClineContinueJetBrains AI AssistantClaude CodeCodex CLIGemini CLIOpenCodenodecodeWarpLibreChatRaycast

All apps, with pros and cons →

Related guides

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 11, 2026

  • ✓ Pass

    Maker matches the repo

    The registry name was verified with the GitHub account TheBarmaEffect, which owns the repo

  • ✓ Pass

    Still maintained

    Code last changed today

  • … 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

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.

Sign in with Google to post

User reviews

No reviews yet

Sign in with Google to write a review

Compared with others in Search & AI memoryi

  • More stars than 92% of the other 5911 servers in this category
  • Published to the registry more recently than 14% of the other 5911 servers in this category
  • Basic checks equal to or better than 100% of the other 5911 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 Glassbox Framework safe?

It passed 2 of 2 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: ANTHROPIC_API_KEY

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 today, and the latest version (1.0.3) reached the registry 6 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: Ruflo, Context7, Metabase

Alternatives

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

Ruflo

Agent teams, swarms, memory and hooks for Claude Code and Codex, served over MCP.

by ruvnetWidely used↓ 74.3K/wk★ 81.4KUpdated yesterday

Runs on your computer

Context7

Feeds AI the latest docs for libraries and frameworks before it answers, so code it writes does not use outdated, removed functions.

by upstashWidely used↓ 1.2M/wk★ 64.6KUpdated 2 days ago

Computer or cloud

Metabase

Lets AI clients search, explore, query, and visualize data in a Metabase instance.

by metabaseWidely used★ 50.3KUpdated 6 months ago

Runs in the cloud

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.

Glass Box Framework

Runtime constitutional verification for AI answers. Every claim carries a reasoning chain. Every score breaks down. Every verdict is traceable.

⭐️ Star this repo if you want runtime AI verification to become the default. Every star moves Glassbox up the search ranking on GitHub, the MCP Registry, and Smithery — which means more developers find this before they ship an AI feature without a Trust Card.

pip install glassbox-framework         # Python

npm install -g @glassbox-framework/mcp # Node / MCP brew install thebarmaeffect/glassbox/glassbox-mcp # macOS

Zero-cost public GlassBox Lite

The repository also ships a separate deterministic Lite verifier and cross-platform gateway that require no paid model API:

Lite performs bounded structural checks and does not browse or establish factual truth. The original six-tool model-assisted MCP documented below remains a separate surface.

See PLATFORMS.md for the exact live, downloadable, pilot, and external-review status of every integration.

What it is

The Glass Box Framework hands an (question, answer) pair to a runtime verification pipeline and returns a structured Trust Card containing:

  • Claims — every atomic assertion in the answer, paired with a *reasoning chain* explaining why it's asserted, what would support it, and what would falsify it.
  • Epistemic Confidence Score (ECS) — a transparent, weighted aggregate over five dimensions with a *published formula* and an always-visible per-dimension breakdown.
  • Glassbox Court — seven adversarial probes (fabrication, source manipulation, bias injection, context attack, overconfidence, underspecification, constitutional violation).
  • Constitution — your natural-language deployer intents compiled into structured runtime rules and evaluated against the answer.
  • Verdict — trust / caution / reject, with the exact reasoning that derived it.
  • Audit reference — a deterministic SHA-256 log_id; identical inputs reproduce the same identifier across runs and languages.

It is intentionally not a wrapper around a single LLM call — the reasoning chain on every claim, the formula on the ECS, and the determinism of the audit hash together form the "Glass Box" principle: no opaque scores.

Quick start (Python)

from glassbox_framework import Glassbox

with Glassbox() as gb: card = gb.verify_answer( question="Can intermittent fasting cure type 2 diabetes?", answer="Yes ...", intents=[ "Never make specific medical claims without citing peer-reviewed sources.", "Always recommend consultation with a licensed healthcare professional.", ], )

print(card["verdict"]) # "reject" print(card"ecs") # 0.6032 print(card"audit") # glassbox-85cc09903bd4... (deterministic)

The six tools

ToolPurpose
glassbox_verify_answerFull pipeline → Trust Card
glassbox_extract_claimsAtomic claims with reasoning chains
glassbox_score_ecsECS with full breakdown + formula
glassbox_red_teamGlassbox Court — 7 adversarial probes
glassbox_generate_trust_cardAssemble a Trust Card from prebuilt parts (no LLM call)
glassbox_export_audit_reportFull pipeline + deterministic SHA-256 audit log

Full schemas, examples, and configuration: mcp/README.md. Python pip-specific docs: mcp/python/README.md.

Architecture (two-layer)

┌──────────────────────────────────────────────────────────┐

│ glassbox-framework (PyPI) Python client │ │ thin JSON-RPC stdio wrapper │ │ spawns ↓ │ ├──────────────────────────────────────────────────────────┤ │ @glassbox-framework/mcp (npm) Node MCP server │ │ 6 tools, Zod-validated I/O │ │ ↳ verify_answer ↳ extract_claims ↳ score_ecs │ │ ↳ red_team ↳ generate_trust_card │ │ ↳ export_audit_report │ └──────────────────────────────────────────────────────────┘

The Python client makes zero LLM calls itself; it forwards arguments to the MCP server over stdio and renders the returned JSON. Set ANTHROPIC_API_KEY once and both layers use it.

Use with Claude Desktop

{

"mcpServers": { "glass-box": { "command": "npx", "args": ["-y", "@glassbox-framework/mcp"], "env": { "ANTHROPIC_API_KEY": "sk-ant-..." } } } }

~/Library/Application Support/Claude/claude_desktop_config.json on macOS.

Determinism

Audit log_ids are SHA-256 over canonicalised JSON of (inputs_hash, claims, ECS dimensions, red-team probe verdicts, constitution evaluations). Timestamps are recorded but never enter the hash, so identical inputs *and* identical engine outputs always produce the same log_id — across runs, machines, and even languages (the Python client → Node server → JSON canonicalisation produces byte-identical hashes).

Verifiable example, no API key needed:

pip install glassbox-framework

python -c " import json from glassbox_framework import Glassbox with open('mcp/demo/raw-inputs.json') as f: i = json.load(f) with Glassbox() as gb: c = gb.generate_trust_card( question=i['question'], answer=i['answer'], claims=i['claims'], red_team=i['red_team'], ecs=i['ecs'], constitution=i['constitution']) print(c'audit') # glassbox-85cc09903bd4b3f8022a4087 "

Project layout

mcp/                       — the MCP server + Python client (this release)

├── src/ — TypeScript MCP server (6 tools) ├── python/ — Python pip package (glassbox-framework) ├── homebrew/ — Homebrew formula ├── assets/ — Launch video + reveal + title cards ├── demo/ — Live terminal demo with prebuilt Trust Card ├── Dockerfile — Container image ├── server.json — MCP Registry manifest ├── smithery.yaml — Smithery.ai manifest ├── LAUNCH.md — Launch kit └── DISTRIBUTION.md — Every channel's status + commands LICENSE — Apache 2.0 ROADMAP.md — Phase 5 (governor) plans for the broader framework CONTRIBUTING.md CHANGELOG.md

Contributing

Glassbox is open source under Apache 2.0 and actively wants forks and PRs. A few specific places we'd love help:

  • More red-team probes — mcp/src/engines/redteam.ts has // v2: placeholders for alignment_faking, reasoning_trace_deception, eval_awareness_gaming, agentic_misalignment, and sustained_jailbreak. Each is a tractable PR — same shape as the existing 7 probes, just a different angle. See .github/ISSUE_TEMPLATE/good_first_issue.md.
  • More language clients — currently Python (glassbox-framework) and Node (@glassbox-framework/mcp). Go, Rust, Ruby, Swift, Kotlin would all be welcome as thin JSON-RPC clients that spawn the existing MCP server.
  • More integrations — Cursor / Cline / Continue / Roo Cline / Zed / Neovim — wherever MCP is read, Glassbox should be one paste away.
  • Real-world Trust Card examples — submit (Q, A) pairs from your own AI workflows so the test suite covers more terrain.

Process:

  1. Pick a good first issue or open one with your idea
  2. Fork, branch, work — the PR template walks you through verification
  3. CI must pass (.github/workflows/ci.yml) — TS strict mode, Python wheel build, cross-language determinism on the canonical audit hash
  4. Open the PR; we aim for review within 48 hours

Code of conduct: Contributor Covenant 2.1. Be kind, stay on substance, no harassment, contact thebarmaeffect@gmail.com for anything off-public-channel.

Star ⭐ this repo

The fastest way to help right now is to star the repo. Every star:

  • Surfaces Glassbox higher in GitHub's MCP topic listings
  • Pushes the project up on the MCP Registry and Smithery rankings
  • Tells the next developer evaluating AI-safety tooling that this is the one with eyes on it

⭐ Star Glassbox

Author

Karthik Barma · MS Artificial Intelligence · Northeastern University.

Powered by Aura.

Issues + PRs: https://github.com/TheBarmaEffect/glassbox/issues