hardSlice

VPS service: Decoded Shredstream UDP → watch SOL MC → fire 100% sells (submit-only).

Flow

1. On VPS: put wallets in data/wallets.json (manual — no keys from LaunchPad)
2. Open UDP for Shredstream (see script below)
3. Local onPoint: vanity mint → POST /arm → wait ACK → then submit create/snipes
4. UDP stream updates MC + balances (no RPC on hot path)
5. On target SOL MC: sign with shred blockhash → Jito/Helius sendBundle

Shredstream dashboard

• Product: Decoded Shred Stream
• Mode: UDP
• Destination: YOUR_VPS_PUBLIC_IP + UDP_PORT (default 8001)

Bootstrap a fresh Ubuntu VPS

cd ~/hardSlice
chmod +x scripts/setup-ubuntu.sh scripts/setup-ufw-shredstream.sh
sudo ./scripts/setup-ubuntu.sh
# installs Node 22, npm deps, UFW UDP port, buffer tuning

Only Node/deps (no firewall):

sudo SKIP_UFW=1 ./scripts/setup-ubuntu.sh

Allow HardSlice HTTP only from your home IP while bootstrapping:

sudo HTTP_ALLOW_FROM=YOUR.HOME.IP ./scripts/setup-ubuntu.sh

One-shot firewall + buffer setup (already covered by bootstrap)

chmod +x scripts/setup-ufw-shredstream.sh
# default: UDP 8001 + HTTP 8787 from anywhere (AUTH_TOKEN still required)
sudo ./scripts/setup-ufw-shredstream.sh

# custom UDP port
sudo ./scripts/setup-ufw-shredstream.sh 9001

# optional: lock HTTP API to your home IP only
sudo HTTP_ALLOW_FROM=203.0.113.50 ./scripts/setup-ufw-shredstream.sh 8001

The script: allows SSH, opens UDP_PORT/udp, opens HTTP_PORT/tcp (world by default, or one IP if HTTP_ALLOW_FROM is set), enables UFW, and raises rmem buffers (Shredstream recommendation).

Also open the same UDP + HTTP ports in any cloud security group.

Run on VPS

cd hardSlice
cp .env.example .env
# set AUTH_TOKEN, UDP_PORT, HTTP_PORT, HELIUS_*/JITO_*
npm install
npm start

systemd example

[Unit]
Description=hardSlice
After=network.target

[Service]
WorkingDirectory=/opt/hardSlice
ExecStart=/usr/bin/npm start
Restart=always
EnvironmentFile=/opt/hardSlice/.env

[Install]
WantedBy=multi-user.target

HTTP API (Bearer AUTH_TOKEN)

Method	Path	Body
GET	/health	—
GET	/status	—
POST	/arm	{ "mint","creator","targetSolMc" }
POST	/disarm	—

Wallets (manual on VPS)

Create data/wallets.json on the server yourself — LaunchPad does not send secrets:

{
  "wallets": [
    { "address": "...", "secret": "<base58>", "label": "dev" },
    { "address": "...", "secret": "<base58>", "label": "snipe1" }
  ]
}

chmod 600 data/wallets.json

targetSolMc is SOL market cap (not USD).

Env

See .env.example. RPC is cold-start only (warmGlobal). Fire path never reads chain state.