SOLANA x ANCHOR

Anchor Size

CLI that calculates Anchor account sizes without manual space = 8 + ... math

Quick Install

Global install from local repository:

cargo install --path cli

Check CLI:

anchor-size --help

Quick Start

Run analysis for all programs:

anchor-size . --all

Features

Automatic Anchor workspace detection
Scans all #[account] structs
Supports nested structs and complex types
String / Vec / Option dynamic size handling
Rent cost estimation in SOL (mainnet/devnet)
JSON reports for CI/CD

Example Output

Detected Anchor workspace

Account: UserProfile
  authority  -> 32 bytes
  stats      -> 9 bytes
  name       -> 34 bytes

Exact size: 83 bytes
Recommended size: 96 bytes
Rent (mainnet): 0.001559 SOL

JSON for CI/CD

anchor-size . --all --json --out-dir reports

[
  {
    "name": "UserProfile",
    "exact_size": 83,
    "recommended_size": 96,
    "rent_sol": 0.001559
  }
]