SNAP Protocol

Name: SNAP Protocol
Author: agentzeny

by agentzenyversion 0.1.2i★ –iRuns on your computer

Registry nameio.github.agentzeny/snap-private-payments

Install

Overview

Description from the maker (original English)

Private agent payments on Solana via ZK proofs: deposit, withdraw, list pools, estimate fees.

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: SNAP_RPC_URL, SNAP_POOL_ADDRESS

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: SNAP_RPC_URL, SNAP_POOL_ADDRESS, SNAP_RELAYER_URL

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": {
    "snap-private-payments": {
      "command": "npx",
      "args": [
        "-y",
        "snap-mcp-server"
      ],
      "env": {
        "SNAP_RPC_URL": "your-value",
        "SNAP_POOL_ADDRESS": "your-value",
        "SNAP_RELAYER_URL": "your-value"
      }
    }
  }
}

Run this in your terminal

claude mcp add snap-private-payments --env SNAP_RPC_URL=your-value --env SNAP_POOL_ADDRESS=your-value --env SNAP_RELAYER_URL=your-value -- npx -y snap-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": {
    "snap-private-payments": {
      "command": "npx",
      "args": [
        "-y",
        "snap-mcp-server"
      ],
      "env": {
        "SNAP_RPC_URL": "your-value",
        "SNAP_POOL_ADDRESS": "your-value",
        "SNAP_RELAYER_URL": "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": {
    "snap-private-payments": {
      "type": "stdio",
      "command": "npx",
      "args": [
        "-y",
        "snap-mcp-server"
      ],
      "env": {
        "SNAP_RPC_URL": "your-value",
        "SNAP_POOL_ADDRESS": "your-value",
        "SNAP_RELAYER_URL": "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

SNAP_RPC_URL required env
Solana RPC endpoint URL
SNAP_POOL_ADDRESS required env
Default shielded pool address
SNAP_RELAYER_URL env
Optional relayer URL for private withdrawals

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 agentzeny, 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 32696 servers in this category
Published to the registry more recently than 11% of the other 32696 servers in this category
Basic checks equal to or better than 100% of the other 32696 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 SNAP 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: SNAP_RPC_URL, SNAP_POOL_ADDRESS

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 (0.1.2) reached the registry 5 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, LexPact UK Contracts

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

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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.

SNAP MCP Server

MCP server for SNAP private payments. It targets @modelcontextprotocol/sdk 1.28.0 and uses stdio transport.

Tools

snap_list_pools
snap_deposit
snap_withdraw
snap_estimate_fee

The server also keeps snap_withdraw_private, snap_pool_info, and snap_balance as compatibility helpers for existing local flows.

Claude Code Config

"mcpServers": { "snap": { "command": "npx", "args": ["tsx", "/path/to/agent-privacy-pool/integrations/mcp/snap-mcp-server.ts"], "env": { "SNAP_RPC_URL": "https://api.mainnet-beta.solana.com", "SNAP_POOL_ADDRESS": "B8SyffZKt8LABKogWjH9rZcjY5PV2hyYRCbTxxbcrpFf", "SNAP_RELAYER_URL": "https://your-relayer.example" } } } }

For deterministic local transport tests, set SNAP_MCP_STUB_MODE=1.

Environment

Start from integrations/mcp/.env.example:

SNAP_RPC_URL
SNAP_POOL_ADDRESS
SNAP_RELAYER_URL
SNAP_MCP_NOTE
SNAP_MCP_VIEWING_KEY_JSON
SNAP_MCP_STUB_MODE

SNAP_MCP_NOTE should be a serialized note returned by SNAPClient.serializeNote(...).

Mainnet Pools

0.1 SOL: B8SyffZKt8LABKogWjH9rZcjY5PV2hyYRCbTxxbcrpFf
1 USDC: 5LeuHrPBgHNhgbCy996MEjcsBk5gNHhVj6AiuuCHZ8od
10 USDC: ECuHf8kgiWfmL3Q6id4WGBQWvuukhzqvF5vsxuPAKZBv

Run

cd /path/to/agent-privacy-pool

set -a source integrations/mcp/.env.example set +a npx tsx integrations/mcp/snap-mcp-server.ts

Smoke test:

npx mocha --require tsx integrations/tests/mcp-stdio.test.ts

SNAP 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

LexPact UK Contracts

README from the maker

SNAP MCP Server

Tools

Claude Code Config

Environment

Mainnet Pools

Run