Agent Wallets

Overview

Give your AI agent a spending account. Fund it with 50c credits. The agent spends on tools within your limits. You refill when needed.

Human funds wallet → Agent spends on tools → Balance decreases → Human refills

No crypto wallets. No blockchain. No seed phrases. Just credits.

How It Works

from fiftyc import AgentAuth
import os

agent = AgentAuth(api_key=os.getenv("FIFTYC_API_KEY"))

# Check balance
balance = agent.wallet.balance()
# → 4,250 credits

# Agent spends automatically within limits
result = agent.call("genius", problem="Optimize my supply chain")
# → 50 credits deducted, 4,200 remaining

Wallet Operations

Fund a Wallet

Credits come from your existing 50c plan balance.

agent.wallet.fund(amount=1000)  # Transfer 1,000 credits from your plan

Check Balance

balance = agent.wallet.balance()
# → { "available": 4200, "lifetime_spent": 12340, "limit": 10000 }

Set Spending Limits

agent.wallet.set_limit(
    daily=500,       # Max 500 credits/day
    monthly=5000,    # Max 5,000 credits/month
    per_call=100     # Max 100 credits per single call
)

Transaction History

txns = agent.wallet.transactions(last=10)
# → [{ tool: "genius", amount: 50, time: "2026-03-20T..." }, ...]

vs. Crypto Agent Wallets

Feature	50c Agent Wallets	Coinbase CDP	agentwallet-sdk	x402
Setup time	1 minute	15 minutes	30 minutes	10 minutes
Requires crypto	No	Yes	Yes	Yes (USDC)
Spend limits	Server-enforced	API-enforced	On-chain (Solidity)	Per-request only
Human control	Full (kill switch)	Coinbase controls	Owner override	None
Audit trail	Built-in	Limited	None	None
Liability model	Human-in-loop	Platform	Self-custody	None

Payment Rails

Agent Wallets can spend through multiple payment rails:

Rail	Description	Status
50c Credits	Direct debit from wallet balance	🔜 Soon
x402	Pay external services with USDC	🔜 Soon

Multi-Agent Budgets

Give a team of agents a shared budget:

# Create a budget pool
pool = agent.wallet.create_pool(
    name="research-team",
    budget=5000,
    agents=["agent_research", "agent_writer", "agent_reviewer"]
)

Security

All wallet operations go through the Agent Auth SDK authorization layer
Balances are server-side — agents cannot forge or inflate credits
Every transaction is logged in the audit trail
Human can freeze any wallet instantly via kill switch