Glossary OS

Plain meaning

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A hardware and software initiative by Solana Labs producing Android smartphones (Saga, Chapter 2) with a secure element-backed seed vault for private key storage, a curated dApp store for Solana applications, and the Mobile Wallet Adapter protocol for standardized wallet-dApp communication on mobile. The Solana Mobile Stack (SMS) enables native mobile dApps to interact with on-device wallets without browser extensions or QR code scanning, targeting the mobile-first crypto user base.

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RPCs, validators, snapshots, indexing, and network plumbing.

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Solana Mobile (solana-mobile)
Category: Infrastructure
Definition: A hardware and software initiative by Solana Labs producing Android smartphones (Saga, Chapter 2) with a secure element-backed seed vault for private key storage, a curated dApp store for Solana applications, and the Mobile Wallet Adapter protocol for standardized wallet-dApp communication on mobile. The Solana Mobile Stack (SMS) enables native mobile dApps to interact with on-device wallets without browser extensions or QR code scanning, targeting the mobile-first crypto user base.
Aliases: SMS, Saga
Related: Mobile Wallet Adapter (MWA)

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Mobile Wallet Adapter (MWA)

An open protocol and SDK that defines a local communication channel (via Android intents and a localhost WebSocket) between mobile dApps and Solana wallet apps installed on the same device, allowing dApps to request transaction signing and message signing without exposing private keys. MWA v2 supports authorization scoping, chain-agnostic signing, and session caching, and is the standard integration layer used by Phantom, Solflare, and other mobile Solana wallets.

Wallet Adapter

Open term

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Infrastructure

Mobile Wallet Adapter (MWA)

An open protocol and SDK that defines a local communication channel (via Android intents and a localhost WebSocket) between mobile dApps and Solana wallet apps installed on the same device, allowing dApps to request transaction signing and message signing without exposing private keys. MWA v2 supports authorization scoping, chain-agnostic signing, and session caching, and is the standard integration layer used by Phantom, Solflare, and other mobile Solana wallets.

Open term

Infrastructure

Solana Pay

An open payment standard and SDK that defines URI schemes and protocol flows for requesting SOL or SPL token transfers and for constructing and returning partially-built transactions from merchant backends to user wallets. It comprises two sub-protocols — Transfer Requests (simple static payment URIs) and Transaction Requests (dynamic server-signed transaction fetching) — and enables point-of-sale payments, loyalty programs, and interactive commerce experiences using QR codes or deeplinks.

Open term

Infrastructure

Solana Explorer

Web-based blockchain browsers that index and visualize Solana ledger data including transactions, accounts, blocks, validators, and token metadata in human-readable form. Explorer.solana.com is the official Solana Labs explorer; Solscan (solscan.io) is the most popular community explorer offering DeFi analytics and token holder data; SolanaFM (solana.fm) provides enhanced transaction decoding, program labeling, and cross-program invocation graphs — all connect to RPC nodes and indexers to serve their data.

Open term

Infrastructure

RPC (Remote Procedure Call)

The JSON-RPC 2.0 protocol interface through which clients communicate with Solana nodes to query chain state, submit transactions, and subscribe to events. Solana exposes a rich set of HTTP and WebSocket endpoints (e.g., getAccountInfo, sendTransaction) that abstract direct peer-to-peer network participation, making RPC the primary integration point for wallets, dApps, and indexers.

Open term

Commonly confused with

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Infrastructuresolana-pay

Solana Pay

An open payment standard and SDK that defines URI schemes and protocol flows for requesting SOL or SPL token transfers and for constructing and returning partially-built transactions from merchant backends to user wallets. It comprises two sub-protocols — Transfer Requests (simple static payment URIs) and Transaction Requests (dynamic server-signed transaction fetching) — and enables point-of-sale payments, loyalty programs, and interactive commerce experiences using QR codes or deeplinks.

Open term

Infrastructureactions

Solana Actions

A protocol specification that standardizes how web servers expose signable Solana transactions and messages via HTTPS endpoints, enabling any URL to become an interactive blockchain entry point. Actions use a GET/POST handshake similar to Solana Pay Transaction Requests but are generalized beyond payments to support arbitrary on-chain operations (voting, staking, DeFi interactions), and serve as the server-side counterpart to Blinks, which render Actions as embeddable UI components.

AliasActions

Open term

Infrastructureexplorer

Solana Explorer

Web-based blockchain browsers that index and visualize Solana ledger data including transactions, accounts, blocks, validators, and token metadata in human-readable form. Explorer.solana.com is the official Solana Labs explorer; Solscan (solscan.io) is the most popular community explorer offering DeFi analytics and token holder data; SolanaFM (solana.fm) provides enhanced transaction decoding, program labeling, and cross-program invocation graphs — all connect to RPC nodes and indexers to serve their data.

AliasSolscanAliasSolanaFM

Open term

Related terms

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Infrastructuremobile-wallet-adapter

Mobile Wallet Adapter (MWA)

An open protocol and SDK that defines a local communication channel (via Android intents and a localhost WebSocket) between mobile dApps and Solana wallet apps installed on the same device, allowing dApps to request transaction signing and message signing without exposing private keys. MWA v2 supports authorization scoping, chain-agnostic signing, and session caching, and is the standard integration layer used by Phantom, Solflare, and other mobile Solana wallets.

Open term

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Infrastructure

RPC (Remote Procedure Call)

The JSON-RPC 2.0 protocol interface through which clients communicate with Solana nodes to query chain state, submit transactions, and subscribe to events. Solana exposes a rich set of HTTP and WebSocket endpoints (e.g., getAccountInfo, sendTransaction) that abstract direct peer-to-peer network participation, making RPC the primary integration point for wallets, dApps, and indexers.

Open term

Infrastructure

RPC Node

A Solana full node that stores ledger state and serves JSON-RPC and WebSocket requests from clients without participating in consensus or voting. RPC nodes must replay every transaction to maintain an accurate account state database, and high-throughput deployments typically run dedicated RPC nodes with large SSDs, high RAM (256 GB+), and high-bandwidth network connections to handle concurrent client load without impacting validator performance.

Open term

Infrastructure

RPC Methods

The enumerated JSON-RPC endpoints exposed by Solana nodes, covering account queries (getAccountInfo, getMultipleAccounts, getProgramAccounts), block and transaction retrieval (getBlock, getTransaction), cluster metadata (getEpochInfo, getSlot, getVersion), and transaction submission (sendTransaction, simulateTransaction). Methods accept a Commitment parameter (processed, confirmed, finalized) to control the recency-vs-safety tradeoff of returned data.

Open term

Infrastructure

getAccountInfo

An RPC method that returns the complete on-chain state of a single account identified by its base-58 public key, including its lamport balance, owner program, executable flag, rent epoch, and raw data payload encoded as base64 or base58. It is the most fundamental read primitive in Solana development and is called at the specified commitment level, with the data field being null if the account does not exist.

Open term