Rubric Protocol

Name: Rubric Protocol
Author: 0xsims

by 0xsimsversion 2.0.2i★ –iRuns on your computer

Registry nameio.github.0xsims/rubric-protocol

Install

Overview

Description from the maker (original English)

AI compliance attestation for EU AI Act, SR 11-7, HIPAA. Free local tier, no key required.

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
You need to fill in: RUBRIC_API_KEY

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: RUBRIC_API_KEY

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

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": {
    "rubric-protocol": {
      "command": "npx",
      "args": [
        "-y",
        "@rubric-protocol/mcp-server"
      ],
      "env": {
        "RUBRIC_API_KEY": "your-value"
      }
    }
  }
}

Run this in your terminal

claude mcp add rubric-protocol --env RUBRIC_API_KEY=your-value -- npx -y @rubric-protocol/mcp-server

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": {
    "rubric-protocol": {
      "command": "npx",
      "args": [
        "-y",
        "@rubric-protocol/mcp-server"
      ],
      "env": {
        "RUBRIC_API_KEY": "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": {
    "rubric-protocol": {
      "type": "stdio",
      "command": "npx",
      "args": [
        "-y",
        "@rubric-protocol/mcp-server"
      ],
      "env": {
        "RUBRIC_API_KEY": "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

RUBRIC_API_KEY secret env
Rubric API key for Hedera mainnet anchoring. Optional — omit for free local PQ-signed attestation.

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 0xsims, 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 32599 servers in this category
Published to the registry more recently than 7% of the other 32599 servers in this category
Basic checks equal to or better than 100% of the other 32599 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 Rubric Protocol 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: RUBRIC_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 –, and the latest version (2.0.2) 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, Zendesk

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

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Zendesk

by pipeworx-io

Zendesk MCP Pack — tickets, users, organizations via OAuth.

Computer or 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.

@rubric-protocol/mcp-server

Post-quantum AI compliance attestation as an MCP server. Works with Claude Desktop, Claude Code, Cursor, Windsurf, Continue, Zed, and any MCP-compatible host.

v2.0 — now with free local tier. No API key required to start attesting.

Install

npm install -g @rubric-protocol/mcp-server

Configure (Claude Desktop)

Edit claude_desktop_config.json:

{ "mcpServers": { "rubric": { "command": "npx", "args": ["-y", "@rubric-protocol/mcp-server"], "env": { "RUBRIC_API_KEY": "optional-for-hcs-anchoring" } } } }

Restart Claude Desktop. Rubric tools appear in the MCP menu.

Tiers

Free (no key)

attest — PQ-signed Merkle leaves stored in ~/.rubric/local-bundles/
verify — check local attestations
framework_detect — detect applicable regulations offline
cost_estimate — project monthly cost
register_agent — request a free key to unlock HCS anchoring
status — federation health

With API key (free developer tier)

Everything above, plus:

HCS anchoring on Hedera mainnet (tamper-evident third-party timestamp)
get_proof — ZK Merkle inclusion proofs (Noir/Barretenberg)

Request a key via the register_agent tool, or at https://rubric-protocol.com

Standard+ tier ($999/mo)

compliance_tag — attach regulatory framework tags to bundles
bundle_query — filter by leafType, agentId, time range
100K attestations/mo, overage $0.01 each

Enterprise ($9,999/mo) / Dedicated ($25K+/mo)

Higher throughput, SLA, dedicated federation capacity.

Paid evidence tools (x402) - new in 2.2

Six tools that pay per call in USDC on Base via the x402 protocol. No Rubric account or API key required - just a funded wallet. Every response carries a signed, Hedera-anchored attestation ID your agent can cite later.

Tool	Price	What you get
`screen_entity`	$0.01	Sanctions/export-control screening across OFAC SDN + Consolidated, UN, UK OFSI, EU, and BIS lists (76K+ entries): per-list results, list file hashes, anchored attestation - audit evidence you screened, against which versions, and what it said
`attested_inference`	$0.01	gpt-4o-mini completion plus attestation binding prompt hash, response hash, exact model version, timestamp - evidence of which model said what, when
`agent_record`	$0.005	Unforgeable operating history for any agent attesting through Rubric - record count, first-seen, continuity - from HCS-anchored records that cannot be backdated
`wallet_record`	$0.005	Attested x402 payment history for any Base/EVM buyer wallet, from an append-only settlement ledger - evidence, not opinion
`verify_audit`	$0.002	Independent audit of any Rubric attestation: signature, HCS sequence, mirror-node confirmation - a signed verdict with its own attestation ID
`hedera_fact`	$0.001	One attested Hedera network fact (exchange rate, gas, supply, nodes, throughput, topic state)

Setup (3 steps)

Create a wallet and fund it with a few dollars of USDC on Base (Coinbase -> withdraw USDC -> network: Base)
Set RUBRIC_WALLET_KEY to the wallet's private key in your MCP server environment
Optional: RUBRIC_X402_DAILY_LIMIT (default 1.00 USD/day)

Money safety, by design

No wallet key? Paid tools return setup guidance - never errors, never charges.
Daily ceiling. Spending stops at your limit; the tool returns a budget error your agent can read. Resets 00:00 UTC.
Price protection. Before paying, each tool checks the server's quoted price against its documented maximum and refuses anything higher - even we cannot overcharge you.
Full accounting. Every paid response includes spentTodayUsd.
Your key never leaves the MCP process. A failed operation is never charged.

Catalog, prices, and terms are machine-readable at x402.json and openapi.json.

Module configuration

Tools load by module via RUBRIC_MCP_MODULES (default: core,x402). Available: core, x402, attestation, verification, compliance, regulatory, governance, registry, ops, or all.

Regulatory coverage

EU AI Act (Articles 9–15, 17, 26, 49, 72, 73, Annexes IV/XI/XII), SR 11-7, OCC, FDIC, NIST AI RMF 1.0, TX TRAIGA, CO AI Act, HIPAA, EU DSA, NIS2, SEC, CFTC, ECOA Reg B, NYC LL144.

Tools (50+ across 9 modules)

attest — attest an AI decision (local free, HCS with key)
verify — verify attestation by ID
get_proof — ZK Merkle inclusion proof
register_agent — request free developer API key
status — federation health
framework_detect — auto-detect regulatory frameworks
cost_estimate — monthly cost projection
compliance_tag — attach framework tags (Standard+)
bundle_query — query bundles (Standard+)

Architecture

Post-quantum signatures: ML-DSA-65 (NIST FIPS 204) via liboqs
Merkle aggregation: N-tier, SHA3-256, up to 1,000,000:1 compression
Anchoring: Hedera mainnet HCS topic 0.0.10416909
Federation: 5 geo-distributed nodes (US, SG, JP, CA, EU)
ZK proofs: Noir beta.19, depth-20 Poseidon2 Merkle inclusion

Rubric Protocol

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

Zendesk

README from the maker

@rubric-protocol/mcp-server

Install

Configure (Claude Desktop)

Tiers

Free (no key)

With API key (free developer tier)

Standard+ tier ($999/mo)

Enterprise ($9,999/mo) / Dedicated ($25K+/mo)

Paid evidence tools (x402) - new in 2.2

Setup (3 steps)

Money safety, by design

Module configuration

Regulatory coverage

Tools (50+ across 9 modules)

Architecture

Links