Glossary

Definitions for the terms that appear most often across Supanode documentation. Skim if a phrase is unfamiliar; click through for the page where the term is used in context.

A

Allowlist. A list of values explicitly permitted - other values are denied by default. Supanode uses an IP allowlist for Bundle authentication: only requests from registered IPs are accepted.

aRPC. Older name for Decoded Shreds - decoded raw shreds delivered via Yellowstone gRPC. Same product.

B

Bundle. Supanode's base data-access plans (RPC + WebSocket + gRPC). Authorized by IP allowlist. See Plans.

Bundle tiers. Five tiers — STARTER (RPC + WebSocket, no gRPC), then FOCUS, BUILD, GROW, PROFESSIONAL (each adds more gRPC connections, WebSockets, and RPS). See Plans.

C

ClickHouse. The columnar database engine that powers Supanode's Indexer. Queryable via standard SQL over HTTPS.

Commitment level. How confirmed a piece of Solana data is. From least to most reliable: processed → confirmed → finalized. Trade off latency vs revert risk. See What's available (RPC).

Compute Units (CU). Solana's metric for transaction execution cost. Supanode mentions CU only to note it does not bill on it.

Credits. Pre-paid units that some providers bill against. Supanode doesn't use credits.

D

Dedicated Node. Your own private Solana RPC node with no shared rate limits. Custom quote. See Dedicated Node.

F

Fan-out. When a single subscription matches a huge number of accounts or transactions, generating heavy traffic. The Solana System Program is the classic fan-out source. Supanode blocks high-fan-out programs on shared gRPC plans - see Restrictions.

Finalized. Commitment level where the slot has been finalized by supermajority and cannot revert. ~13 seconds after confirmed.

Full Block Streaming. A gRPC add-on that streams every transaction in every block (no filter). $400/mo. See Full Block Streaming.

G

Geyser. The Solana validator plugin interface that streams account, transaction, and slot updates directly out of a validator. Yellowstone is Triton's gRPC service built on the Geyser interface — the same "Yellowstone gRPC" Supanode exposes.

gRPC. Google's high-performance RPC framework. Supanode exposes Solana data via the Yellowstone gRPC interface. See gRPC.

I

Indexer. Supanode's decoded DEX-transaction database, queryable via SQL. $300/mo. See Indexer.

IP allowlist. Authentication method where access is granted to specific IP addresses. The Bundle plans use IP allowlist with one IP per subscription. Tokens are not used for Bundle in v1.

J

Jito. A Solana validator client and bundle-engine ecosystem that provides priority transaction landing for tipping users. Supanode's Sender routes through Jito's Bundle Engine in parallel with SWQoS.

L

Leader. The validator currently producing blocks. Solana's leader rotates every 4 slots. Sender forwards transactions to the current leader through SWQoS for fastest landing.

M

MEV (Maximal Extractable Value). Profit captured by reordering, inserting, or excluding transactions in a block. HFT and arbitrage workloads pursue MEV. Supanode's Full Block Streaming and Raw Shreds products are designed for MEV-class use cases.

N

Nanosecond timestamp. The arrival time of a transaction at Supanode's Amsterdam shred receiver, captured at nanosecond resolution. Used for MEV and microstructure analysis. See Nanosecond timestamps.

P

Processed. Lowest commitment level - the slot has been seen but might revert. Fastest, least reliable.

R

Raw Shreds. Top-of-Turbine UDP shred stream. $200/mo per IP, Frankfurt. See Raw Shreds.

RPC. Solana's standard JSON-RPC interface for on-demand queries. See RPC.

RPS. Requests per second. The main Supanode rate-limit metric. Shared between RPC, WS subscribe/unsubscribe, and gRPC SubscribeRequest updates.

S

Sender. Supanode's TPU forwarding service. Pay-per-transaction via tip - no monthly subscription. See Sender.

Shred. A small fragment of a Solana block. Validators distribute shreds via the Turbine protocol. Reading shreds at the source gives the lowest possible latency for new block data.

Slot. Solana's basic time unit. Roughly one slot every 400ms. Slots collect transactions into a block.

SOL. The native Solana cryptocurrency. Used for transaction fees and Sender tips.

SPL token. A fungible token on Solana issued via the Token Program. Most DeFi tokens are SPL tokens.

Stake-weighted. A connection or routing decision where validators with more staked SOL get priority. SWQoS = Stake-Weighted Quality of Service - how Sender routes directly to the active leader.

SWQoS. See Stake-weighted.

T

Tip. A System Program transfer from your transaction to a tip account. Required by Sender to route through Jito's bundle auction. Minimum is 1,000,000 lamports (0.001 SOL). See Tips.

TPS. Transactions per second. Counts sendTransaction calls separately from RPS.

TPU. Transaction Processing Unit - the validator port that accepts transactions directly from clients. Sender forwards to the current leader's TPU through SWQoS.

Turbine. Solana's block propagation protocol. Validators distribute shreds via Turbine; Supanode reads shreds from this layer for Raw Shreds.

U

USDC / USDT. Stablecoins Supanode accepts as payment. Billing is crypto-only — SOL and ETH are also accepted.

W

WebSocket. Persistent two-way connection over ws:// or wss://. On Solana, WebSocket is used for subscription notifications (account changes, slot updates, etc.). See WebSocket.

X

x-token. HTTP header used to authenticate API requests. The Indexer uses x-token. Bundle products do not use x-token in v1 - they use IP allowlist. Sender uses no token; the tip on the transaction is the gate.

Y

Yellowstone gRPC. The open-source gRPC streaming standard for Solana, maintained by Triton One. Supanode's gRPC product implements this spec exactly. See the official Yellowstone repo.