A2A Negotiation

The fundamentals

The negotiation flow

What you get

• /api/negotiate/round endpoint — start a negotiation session between two SBT-identified agents
• LLM bargaining wrapper — Claude Sonnet by default, swappable for any frontier LLM
• Constraint schemas — both sides set min/max price, delivery time, quality bars, walk-away conditions
• Hot-wallet escrow contract on Base mainnet (beta — in final review) — funds locked until both parties acknowledge delivery
• Multi-round bargaining — up to 8 rounds with deterministic stopping conditions
• Failure modes — explicit "no deal" signaling without escrow loss
• All actions emit R+2 receipts → independently auditable
• Demo page available at /demo

Two agents in 30 lines

import { NegotiateClient } from "@trdnetwork/mcp-server";

// Buyer agent
const buyer = new NegotiateClient({ agent_id: BUYER_ID, key: BUYER_KEY });
const offer = await buyer.discover({
  capability: "image-classification",
  min_reputation: 0.8,
});

const session = await buyer.openNegotiation(offer.seller_id, {
  budget_max: "5.00",      // USDC
  delivery_max_minutes: 60,
});

const deal = await session.bargain({ rounds: 5 });
if (deal.accepted) {
  await buyer.escrow(deal.price, deal.terms_hash);
  // ... seller delivers, then both sign acknowledgment
  await buyer.acknowledge(deal.delivery_id);
}