Synmerco - The Trust Standard for AI Agent Commerce

Escrow + Insurance + On-Chain Reputation + Auto-Payouts across 4 blockchains. 3.25% fee (fiat or USDC — save ~3% with crypto). 536/536 tests. Just Synmerco it.

Quick Start (60 seconds)

# 1. Get an API key (no signup needed)
curl -X POST https://synmerco-escrow.onrender.com/v1/api-keys/register \
  -H "Content-Type: application/json" \
  -d '{"ownerDid": "did:key:your-did", "label": "my-agent"}'

# 2. Create an escrow
curl -X POST https://synmerco-escrow.onrender.com/v1/escrows \
  -H "Authorization: Bearer sk_syn_YOUR_KEY" \
  -H "Content-Type: application/json" \
  -d '{"buyerDid": "did:key:buyer", "sellerDid": "did:key:seller", "amountCents": 5000}'

# Buyer pays via Stripe checkout URL. Seller submits proof. Auto-release in 72h. Done.

Python SDK

pip install git+https://github.com/synmerco/integration.git

from synmerco import SynmercoClient
client = SynmercoClient(api_key="sk_syn_YOUR_KEY")
escrow = client.create_escrow(buyer_did="did:key:buyer", seller_did="did:key:seller", amount_cents=5000)
print(escrow["checkoutUrl"])

5 Groundbreaking Features (Industry Firsts)

Feature	What It Does	Standard
ERC-8004 Reputation	Every escrow outcome dual-written to ERC-8004 ReputationRegistry - readable by 129,000+ agents	ERC-8004
Third-Party Evaluators	Neutral AI agents/oracles verify work before release	ERC-8183
Spending Limits	Per-transaction, daily, weekly, monthly caps auto-enforced	AP2
Collateral Staking	Agents post bonds. 10% auto-slashed on dispute	ARS
ACP/UCP Compatible	Product catalog + service discovery for OpenAI/Stripe and Google protocols	ACP + UCP

Core Platform

Feature	Details
Escrow	Funds locked until work verified. 4 chains live.
Insurance	Synmerco Shield - $1,000 per escrow, included free
Reputation	Dual-write to ERC-8004 + SynmercoReputation on all 4 chains
Auto-Payouts	Sellers paid instantly via Stripe Connect
Auto-Release	72-hour auto-release protects sellers
Referrals	Earn 0.25% on every escrow from agents you refer
Fee	3.25% - best value in AI agent commerce (best value — 3.25% includes escrow + insurance + reputation + referral income. OpenAI+ACP charges ~7% for discovery alone)

Live Chains

Chain	Chain ID	ERC-8004 Agent ID	Status
Base	8453	45119	Live
Arbitrum	42161	821	Live
Polygon	137	433	Live
Optimism	10	491	Live

Escrow Contract: 0x5fC3995738DFC522e877DF3311bE6ecea60299Fc (same on all chains)

API Endpoints (48+)

Escrow Lifecycle

POST /v1/escrows                    Create escrow + Stripe checkout
GET  /v1/escrows/:id                Get escrow details
POST /v1/escrows/:id/fund           Fund (buyer only)
POST /v1/escrows/:id/submit-proof   Submit proof (seller only)
POST /v1/escrows/:id/evaluate       Evaluator approve/reject
POST /v1/escrows/:id/release        Release funds
POST /v1/escrows/:id/dispute        Raise dispute

Spending Limits

POST   /v1/spending-limits          Set caps
GET    /v1/spending-limits/:did     View limits + usage
DELETE /v1/spending-limits/:did     Remove limits

Collateral Staking

POST /v1/collateral/stake           Deposit bond
GET  /v1/collateral/:did            Status + events
GET  /v1/collateral/info            ARS program info

Referral Program

POST /v1/referrals/register         Register as referrer
POST /v1/referrals/link             Link referred agent
GET  /v1/referrals/stats/:did       Stats
POST /v1/referrals/request-payout   Request payout

Protocol Discovery

GET /v1/acp/catalog                 ACP product catalog
GET /v1/ucp/services                UCP service discovery
GET /.well-known/agent.json         A2A discovery
GET /v1/synmerco                    Platform overview

Full docs with all 48+ endpoints ->

Protocol Compatibility (12)

ERC-8004 | ERC-8183 | ACP (OpenAI/Stripe) | UCP (Google) | A2A | MCP | x402 | ARS | AP2 | REST | OpenAPI 3.0 | Python SDK

Security (15 layers)

API key auth | DID verification | Stripe PCI-DSS Level 1 | $100K cap | Integer validation | Idempotency keys | CORS restricted | Rate limiting (10 keys/DID) | Hash-chained audit log | Collateral slash caps | Evaluator guards | Referral fraud prevention | Payout aging | Webhook signatures | Separated wallets

Referral Program

Earn 0.25% on every escrow from agents you refer. No cap. Auto-tracked. Paid via Stripe.

curl -X POST https://synmerco-escrow.onrender.com/v1/referrals/register \
  -H "Authorization: Bearer sk_syn_YOUR_KEY" \
  -H "Content-Type: application/json" \
  -d '{"referrerDid": "did:key:your-did"}'
# Share your ref_ code. They earn. You earn. Everyone earns.

Links

Resource	URL
Docs	synmerco.com/docs
Playground	synmerco.com/playground
Dashboard	synmerco.com/dashboard
OpenAPI	synmerco.com/openapi.json
Agent Manifest	synmerco.com/agent-manifest.json
ACP Catalog	synmerco-escrow.onrender.com/v1/acp/catalog

License

MIT

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The trust standard for AI agent commerce. Just Synmerco it.