Smartpolicy

Name: Smartpolicy
Author: smartpolicy-protocol

by smartpolicy-protocolversion 0.2.0i★ –iRuns on your computer

Registry nameio.github.smartpolicy-protocol/smartpolicy

Install

Overview

Description from the maker (original English)

Runtime authorization for AI agents and smart contracts via an immutable on-chain policy registry

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: SMARTPOLICY_ISSUER_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: SMARTPOLICY_REGISTRY, SMARTPOLICY_VERIFIER, SMARTPOLICY_RPC_URL, SMARTPOLICY_ISSUER_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": {
    "smartpolicy": {
      "command": "npx",
      "args": [
        "-y",
        "@smartpolicy/mcp"
      ],
      "env": {
        "SMARTPOLICY_REGISTRY": "your-value",
        "SMARTPOLICY_VERIFIER": "your-value",
        "SMARTPOLICY_RPC_URL": "your-value",
        "SMARTPOLICY_ISSUER_KEY": "your-value"
      }
    }
  }
}

Run this in your terminal

claude mcp add smartpolicy --env SMARTPOLICY_REGISTRY=your-value --env SMARTPOLICY_VERIFIER=your-value --env SMARTPOLICY_RPC_URL=your-value --env SMARTPOLICY_ISSUER_KEY=your-value -- npx -y @smartpolicy/mcp

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": {
    "smartpolicy": {
      "command": "npx",
      "args": [
        "-y",
        "@smartpolicy/mcp"
      ],
      "env": {
        "SMARTPOLICY_REGISTRY": "your-value",
        "SMARTPOLICY_VERIFIER": "your-value",
        "SMARTPOLICY_RPC_URL": "your-value",
        "SMARTPOLICY_ISSUER_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": {
    "smartpolicy": {
      "type": "stdio",
      "command": "npx",
      "args": [
        "-y",
        "@smartpolicy/mcp"
      ],
      "env": {
        "SMARTPOLICY_REGISTRY": "your-value",
        "SMARTPOLICY_VERIFIER": "your-value",
        "SMARTPOLICY_RPC_URL": "your-value",
        "SMARTPOLICY_ISSUER_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

SMARTPOLICY_REGISTRY env
PolicyRegistry contract address (omit for the public Sepolia default)
SMARTPOLICY_VERIFIER env
GrantVerifier contract address (omit for the public Sepolia default)
SMARTPOLICY_RPC_URL env
EVM RPC endpoint (omit for the public Sepolia default)
SMARTPOLICY_ISSUER_KEY secret env
Optional grant-issuer private key; enables the grant_issue tool

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 6, 2026

✓ Pass
Maker matches the repo
The registry name was verified with the GitHub account smartpolicy-protocol, 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 32479 servers in this category
Published to the registry more recently than 16% of the other 32479 servers in this category
Basic checks equal to or better than 100% of the other 32479 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 Smartpolicy 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: SMARTPOLICY_ISSUER_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 (0.2.0) reached the registry 4 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, Binggio

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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.

SmartPolicy

Runtime authorization for AI agents and smart contracts.

Define what an agent, a user, or a contract is allowed to do — once, as a policy. Enforce it everywhere: on-chain via a minimal verifier, off-chain via an MCP server and REST API that AI systems consume directly. Update the rules without redeploying anything.

Status (2026-06-12): core contracts live on Ethereum Sepolia

(Etherscan-verified, addresses in contracts/deployments/sepolia.json); 54

Foundry tests green; MCP server v0 packaged — npx smartpolicy-mcp runs

zero-config against Sepolia, npx smartpolicy-mcp deploy bootstraps any

chain from embedded bytecode; AI-consumability proven by unaided

fresh-agent execution tests (incl. cold start on an empty chain). NOT

audited; internal until mature — no public repo or registry listings yet.

Current state, decisions, and how to resume work: PLAN.md.

Why

Every team shipping AI agents hits the same wall: the agent can technically do anything its keys allow, and the only ways to constrain it are hardcoded prompts or redeployed code. Every smart contract team hits the mirror image: access rules baked into the contract at deploy time.

SmartPolicy separates the rule from the enforcement point:

A policy lives in the on-chain Registry: members, admins, conditions, expiry, and mutability flags. It is data, not code. Changing a rule is a transaction, not a redeploy.
Enforcement happens wherever the action happens:
A smart contract inherits one modifier and checks the Registry (free view call).
An AI agent (or the service in front of it) asks the MCP server / REST API: *"may 0xAgent perform action under policy N?"* and receives a short-lived signed grant (EIP-712) that any contract or backend can verify.

What this is NOT

Not a token. There is no protocol token, no ICO, no governance theater. Revenue is fees: a small fee on on-chain policy writes, and metered (x402) pay-per-call on the hosted API. Reads and verification are free.
Not upgradeable. The core Registry is immutable once deployed. Trust comes from code you can read, not admin keys you have to trust. New protocol versions are new deployments.
Not an oracle. SmartPolicy answers "is this allowed?", not "what happened in the world?". Condition values that depend on external facts are attested via signed grants from sources the policy owner chooses.

Architecture (short version)

┌─────────────┐   MCP / REST (x402 metered)   ┌──────────────────┐

│ AI agents │ ────────────────────────────▶ │ SmartPolicy MCP │ │ & services │ ◀──── signed grants ──────── │ server (TS) │ └─────────────┘ └────────┬─────────┘ │ reads + grant issuance ┌─────────────┐ inherit Gate modifier ┌────────▼─────────┐ │ Protected │ ────── view calls ──────────▶ │ PolicyRegistry │ │ contracts │ │ (Base, immutable)│ └─────────────┘ └──────────────────┘

See ARCHITECTURE.md for the full design and the rationale for every decision (chain, fees, trust model, what was deliberately dropped from v1).

Repository layout

contracts/   Solidity core: PolicyRegistry, PolicyGate, interfaces (Foundry)

mcp/ MCP server + REST API (TypeScript, x402 metering) sdk/ TypeScript client SDK (@smartpolicy/sdk) — reads, grants, tx-building docs/ Integration guides (planned)

Lineage

SmartPolicy is a clean rewrite of the strongest ideas from a 2025 prototype ("Smart Policy Protocol", Sepolia): the policy registry, the tiered integration model, and hybrid on-chain + signed-token enforcement. The rewrite deliberately drops the SPOL token/ICO/governance suite, the sports-prediction oracle, the factory contracts, and the upgradeable-proxy trust model, and fixes the known security issues (tx.origin checks, missing reentrancy guards, header-only API auth).

License

Apache-2.0 — see LICENSE.

Smartpolicy

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

Binggio

README from the maker

SmartPolicy

Why

What this is NOT

Architecture (short version)

Repository layout

Lineage

License