agent-wallet

Solana wallet CLI for AI agents. Makes HTTP requests and automatically handles MPP (HTTP 402 Payment Required) payment flows.

Install

cargo install agent-wallet

The binary is called aw.

Quick Start

# Set up a wallet
aw wallet new

# Check balances
aw balance

# Make a request to an MPP-enabled API
aw GET https://api.example.com/resource --max-cost 0.01

# Dry run (see the cost without paying)
aw GET https://api.example.com/resource --max-cost 0.01 --dry-run

How It Works

1. aw sends your HTTP request
2. If the server responds with 402 Payment Required and an MPP challenge, aw parses it
3. Checks the price against your budget (--max-cost)
4. Sends a Solana payment (USDC, SOL, or any SPL token)
5. Retries the request with a payment credential
6. Prints the response body to stdout

Commands

HTTP Requests

aw GET <url> [-H "Header: Value"] [--max-cost X] [--dry-run] [--json]
aw POST <url> [body] [-H "Header: Value"] [--max-cost X] [--dry-run] [--json]
aw PUT <url> [body] [-H "Header: Value"] [--max-cost X] [--dry-run] [--json]
aw DELETE <url> [-H "Header: Value"] [--max-cost X] [--dry-run] [--json]

Wallet

aw wallet              # Show public key
aw wallet new          # Generate a new keypair
aw wallet import <path>  # Import an existing keypair

Balance

aw balance             # Show SOL and USDC balances
aw balance --json      # {"sol":0.142,"usdc":4.23}

Environment Variables

Variable	Purpose	Default
AW_KEYPAIR	Path to Solana keypair JSON	~/.config/solana/id.json
AW_RPC_URL	Solana RPC endpoint	https://api.mainnet-beta.solana.com
AW_MAX_COST	Default per-call budget (human units)	None (required per-call)

Exit Codes

Code	Meaning
0	Success
1	HTTP error (non-2xx, non-402)
2	Price exceeded budget (--max-cost)
3	Insufficient token balance
4	Config or wallet error

Output

• stdout: Response body only. Nothing else.
• stderr: Payment info, errors, diagnostics.

Each paid request emits one JSON line to stderr:

{"paid":0.001,"currency":"EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v","recipient":"ABC...","signature":"5xK..."}

Agent Usage

# Set environment, call in a loop
export AW_KEYPAIR=/path/to/key.json
export AW_MAX_COST=0.01
export AW_RPC_URL=https://my-rpc.example.com

RESPONSE=$(aw GET https://api.example.com/data 2>/dev/null)

Works with any server implementing the MPP 402 protocol.