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Health: Not checked yetWe have not completed a health check for this listing yet.Last checked 8/11/2026, 12:23:32 AM

SNAP Protocol

Enrichment pendingWe haven’t run our AI enrichment pass on this listing yet, so the overview, use cases, and FAQ below may be sparse or missing. We work through the catalog over time β€” check back soon.
View RepositoryVisit Website

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

Quick Install

Automated & IDE Setup

Copy the AI prompt to install this server into Claude Code, Cursor, or another agent β€” or use 1-click editor setup below.

Add to CursorAdd to VS Code
Manual Client & Custom JSON ConfigExpand JSON β–Ύ

Install Config Generator

Choose your client
claude_desktop_config.json
{
  "mcpServers": {
    "snap-protocol": {
      "command": "npx",
      "args": [
        "-y",
        "snap-protocol"
      ]
    }
  }
}

πŸ’‘ Paste into ~/Library/Application Support/Claude/claude_desktop_config.json (macOS) or %APPDATA%\Claude\claude_desktop_config.json (Windows)

Install Directory Badge Claim listing AlternativesπŸ’° More in Finance & Fintech

Documentation Overview

SNAP β€” Shield Network Agent Payments

Private agent-to-agent payments on Solana using zero-knowledge proofs.

GitHub stars snap-solana-sdk snap-langchain-tools License: MIT Solana

SNAP is live on Solana mainnet. See the security docs for the protocol's threat model and trust assumptions.

What SNAP Does

SNAP lets AI agents pay each other without on-chain observers learning who paid whom. Deposits enter a shielded pool under a cryptographic commitment. Withdrawals leave the pool with a Groth16 proof that shows the recipient is entitled to the funds without revealing which deposit is being claimed.

How It Works

  1. Agent A deposits SOL plus a commitment into the pool.
  2. Agent A sends a secret note to Agent B through a private channel.
  3. Agent B reconstructs the Merkle path and generates a Groth16 proof.
  4. Agent B withdraws SOL with withdraw_zk or withdraw_zk_relayed.
  5. Observers can see the pool activity, but they cannot link the withdrawal to a specific deposit.

Quick Start

Install the SDK and its peer dependencies:

Terminal
npm install snap-solana-sdk @solana/web3.js @coral-xyz/anchor

Minimal private payment:

server.ts
import { Connection, Keypair, PublicKey, clusterApiUrl } from "@solana/web3.js";
import { SNAPClient } from "snap-solana-sdk";

async function main() {
  const connection = new Connection("https://your-rpc-url.com", "confirmed");
  const sender = Keypair.generate();
  const recipient = Keypair.generate();
  const pool = new PublicKey("B8SyffZKt8LABKogWjH9rZcjY5PV2hyYRCbTxxbcrpFf");

  const snapA = new SNAPClient(connection, sender);
  const snapB = new SNAPClient(connection, recipient);

  const note = await snapA.deposit(pool, 0.1);
  const serialized = SNAPClient.serializeNote(note);
  await snapB.withdraw(pool, SNAPClient.deserializeNote(serialized), recipient);
}

void main();

If you want a runnable walkthrough from this repo, use:

Terminal
npx tsx examples/basic-payment.ts
npx tsx examples/agent-to-agent.ts
npx tsx examples/relayed-withdrawal.ts

Architecture

ComponentDescription
Solana ProgramAnchor program with deposit, withdraw_zk, and withdraw_zk_relayed
ZK Circuitcircom Groth16 circuit using Poseidon and a depth-10 Merkle tree
SDKsnap-solana-sdk for note handling, proof generation, and client API
Agent Kit PluginSolana Agent Kit v2 plugin with snap_create_pool, snap_deposit, snap_withdraw, and snap_withdraw_private
LangChain Toolssnap-langchain-tools β€” StructuredTool wrappers for LangChain/LangGraph agents
RelayerExpress service for gas-abstracted private withdrawals

Mainnet

Pool denominations are 0.1 SOL, 1 USDC, and 10 USDC. See THREAT_MODEL.md for trust assumptions.

FieldValue
Program ID9uePoqdgaXpqFLQM2ED1GGQrwSEiqe3r6tW1AfsnrrbS
Pool β€” 0.1 SOLB8SyffZKt8LABKogWjH9rZcjY5PV2hyYRCbTxxbcrpFf
Pool β€” 1 USDC5LeuHrPBgHNhgbCy996MEjcsBk5gNHhVj6AiuuCHZ8od
Pool β€” 10 USDCECuHf8kgiWfmL3Q6id4WGBQWvuukhzqvF5vsxuPAKZBv
NetworkSolana mainnet-beta
Protocol fee0.25%

Project Structure

text
β”œβ”€β”€ programs/           # Solana program (Rust/Anchor)
β”œβ”€β”€ circuits/           # circom ZK circuit
β”œβ”€β”€ sdk-package/        # snap-solana-sdk npm package
β”œβ”€β”€ agent-kit-tool/     # Solana Agent Kit plugin
β”œβ”€β”€ relayer/            # Express relay service
β”œβ”€β”€ agents/             # Demo agent scripts
β”œβ”€β”€ examples/           # Minimal end-to-end examples
β”œβ”€β”€ scripts/            # Deployment and quickstart scripts
β”œβ”€β”€ docs/               # Troubleshooting, circuit, and compliance docs
└── tests/              # Integration tests

Development

bash
# Build the Solana program
anchor build

# Run validator-backed tests
PATH="$HOME/.local/share/solana/install/active_release/bin:$PATH" anchor test --skip-build

# Build and test the SDK package
cd sdk-package && npm install && npm run build && npm test

Security

Known risks, protocol limits, and security documentation are in FINDINGS.md, docs/CIRCUIT_SPEC.md, docs/THREAT_MODEL.md, docs/COMPLIANCE.md, and docs/GOVERNANCE.md.

License

MIT

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Frequently Asked Questions about SNAP Protocol

Add the following block to your claude_desktop_config.json under mcpServers: "mcpServers": { "snap-protocol": { "command": "npx", "args": ["-y", "SNAP Protocol"] } }

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Technical Specs & Signals

CategoryπŸ’°Finance & Fintech
More technical detailsExpand β–Ύ
TransportSTDIO
RuntimeNode.js
0/4 checks healthy over the last 6h
Views0
Unique ViewsTotal visits recorded for this listing page on AllMCPs.
Installs0
Installs & Copy ActionsTotal times users copied install commands or configuration snippets for this server.
27Quality signal: Emerging Β· 27/100How this signal is calculated β–Ύ
Server availabilityNot measured

Not scored for repo-hosted servers β€” we can't reach the running server, only its GitHub page. Hosted MCP endpoints are health-checked live.

Verified ownership8/20
Documentation & tools11/30
Adoption & activity1/15
Community engagement0/10

A guidance signal from public completeness & health data β€” not a user rating. New listings start lower and rise as they add docs, get verified, and grow adoption. Signals we can't observe for a listing are skipped, not counted against it.

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