SHIP AI AGENTS THAT CAN'T DRAIN YOUR WALLET

Name: SpendSafe
Rating: 5 (1 reviews)
Author: SpendSafe

Real-time policy enforcement without custody. Works with any wallet SDK.

Get Started → Watch Demo (57s) ▶

100%

Non-Custodial

Prebuilt Wallet SDKs

15+

Blockchains

<50ms

Policy Check Latency

LIVE TRANSACTIONS

Agents Move Fast

One bad prompt. One overlooked bug. One exploit. Your treasury drains in seconds. Traditional key custody stops hackers—not rogue agents with authorised access.

One Bug. Zero Balance.

$1,000,000

No circuit breaker. No recovery. No second chances.

Agent Autonomy. Infinite Liability.

UNLIMITED
EXPOSURE

They spend. You pay. That's the deal.

Custodial Control? Still Your Problem.

100% LIABLE

More overhead. Slower execution. Same liability.

SPENDSAFE ENFORCES YOUR RULES

Drop-In Policy Layer

SpendSafe enforces spending rules before transactions are signed. Your agents run freely, your treasury stays safe.

Validate

Agent requests payment → Policy engine checks limits → Issues single-use authorisation

POST /validate-intent → Check daily limit → Reserve amount → JWT token

Verify & Fingerprint

Before signing → Verify token + cryptographic fingerprinting prevents tampering → Approve for signing

POST /verify-auth → SHA-256 fingerprint → Tamper detection → Approve

Sign

Sign transaction with your keys (never shared) → Broadcast to blockchain

wallet.sign(tx) → broadcast() → txHash: 0xf3a9...

YOUR KEYS NEVER LEAVE YOUR INFRASTRUCTURE

Real-Time Analytics

Transaction Volume (Live)

Policy Enforcement Breakdown

Daily Limit Exceeded 42%

Per-Transaction Limit 28%

Hourly Limit Exceeded 15%

Whitelist Violation 10%

Frequency Limit 5%

Live Transaction Metrics

LIVE

Transactions/sec

247

Approval Rate

94%

Blocked (24h)

1,432

Value Protected

$2.3M

Programmable Spend Controls

Per-Transaction Limits

Maximum amount per single transaction

Time-Based Limits

Hourly, daily, and custom time-window spending caps

Recipient Whitelist

Only allow transactions to pre-approved addresses

Transaction Frequency

Maximum X transactions per time period

Multi-Agent Management

Different limits for each agent

Real-Time Monitoring

Live dashboard with auto-refresh

Audit Trail

Append-only log of every policy decision

Tamper Protection

Intent fingerprinting prevents modification

Built For Autonomous Agents

E-commerce Agent

Agent can purchase items up to $100/day, preventing runaway spending.

Customer Support

Support agent can issue refunds up to $50 without human approval.

DeFi Trading Bot

Automated portfolio rebalancing with per-transaction limits and daily caps.

Multi-Agent Platform

Platform with hundreds of agents, each with custom spending policies.

Payroll Agent

Automatically pay 200+ contractors in USDC every Friday with per-contractor monthly caps.

Supply Chain Payments

Process international supplier payments in USDC with daily limits and verified recipient whitelist.

FAQs

Do you have access to my private keys?

No, never. Your keys stay in your infrastructure. We only receive transaction intents (recipient, amount, asset) - never keys or signatures. The SDK is open source, so you can verify this yourself.

How long does integration take?

5-10 minutes. Wrap your existing wallet with our SDK, set your limits in the dashboard, and you're done. No changes to your agent's transaction logic required.

Can agents bypass the spending controls?

The SDK wraps your wallet's signing function, so policy checks happen before any transaction is signed. As long as your agent uses the SDK for all payments, enforcement is guaranteed.

What happens if the SpendSafe API goes down?

Transactions are blocked (fail-closed for safety). For production environments, we provide a local fallback validator you can run independently, eliminating this dependency.

What wallet SDKs are supported?

ethers.js, viem, Solana, Coinbase SDK, Dynamic, Privy, and any EVM wallet. We use an adapter pattern - if you have a custom wallet, you can write a simple adapter.

Can agents interact with smart contracts?

Yes. SpendSafe enforces limits on any transaction - native transfers, ERC-20 tokens, or contract calls. You define limits by asset, we handle the rest.

How do you prevent transaction tampering?

Intent fingerprinting - we create a cryptographic hash of the exact transaction parameters. If the agent modifies anything after approval (amount, recipient, etc.), the hash won't match and signing is blocked.