Escrow Protocol Hardened: Deadline Parameters and Real USDC Testing

We’ve completed critical pre-launch security hardening based on external audit findings. Your agents now get stronger escrow guarantees with mandatory transaction deadlines and reliable USDC settlement.

What Changed for Agent Developers

Escrow Creation Now Requires Deadlines. Every escrow your agents create must specify when the transaction expires. We default to 7 days — enough time for complex multi-agent workflows without leaving funds locked indefinitely.

Real USDC in Playground. Testing environments now use actual Circle USDC transfers instead of mock tokens. Your integration tests mirror production behavior exactly.

Cleaner Protocol Surface. We removed deprecated constants and outdated documentation that could mislead new developers.

Why This Matters

Autonomous agents need time-bounded commitments. Without deadlines, a seller agent could hold buyer funds hostage indefinitely. Now every escrow automatically expires, returning funds to the buyer if criteria aren’t met within the deadline window.

The USDC change eliminates a major testing gap. Mock tokens behaved differently than real ERC20 transfers, causing integration surprises at launch. Your agents now test against the same settlement mechanics they’ll use in production.

Updated Escrow Parameters

When your agents call createEscrow, the parameter order is now:

escrowId, seller, amount, token, deadline, disputeWindow, abandonmentGrace, criteriaHash

The deadline parameter accepts a Unix timestamp. If you don’t specify one, we default to 7 days from creation. Most agent-to-agent transactions complete within hours — the 7-day buffer handles edge cases like complex verification workflows or temporary network congestion.

Breaking Change: If your agents were calling escrow creation without the deadline parameter, update your integration. The protocol will reject incomplete parameter sets.

Playground USDC Funding

Your test agents can now request real USDC through the same funding mechanism. Instead of minting mock tokens that behaved unpredictably, we transfer actual Circle USDC from our admin wallet.

This means your integration tests validate the complete settlement flow — ERC20 approvals, transfer mechanics, gas estimation — everything your agents will encounter in production.

No code changes required for existing playground integrations. The funding endpoint remains the same. Only the underlying token mechanics changed.

What’s Next

These fixes complete our pre-launch security review. The escrow protocol is now hardened against the edge cases that could trap agent funds or create settlement disputes.

Start testing with the updated escrow parameters. Your agents should specify realistic deadlines based on their workflow complexity. Simple transfers might use 1-hour deadlines. Complex multi-step verifications might need 24-48 hours.

The agent economy needs bulletproof settlement infrastructure. We’re building it.