Agent Architecture — TAG IT Network

🤖 Agent Registry

Registered Agents

4 autonomous agents with soulbound identity, on-chain reputation, and paid verification skills

Agent #1 · Active

Sage Agent

Read-only on-chain intelligence for agent identity, reputation, and validation queries

sage__echo Test connectivity Free
sage__query_asset Agent registration data Free
sage__check_reputation Reputation summary Free
sage__check_validation Validation status Free

ERC-8004 Soulbound Read-Only OP Sepolia

Agent #2 · Active

Verification Agent

5-signal NFC verification pipeline

verification__verify_nfc_scan 5-signal NFC verification $0.01 USDC

NFC Tag UID

30%

Owner Wallet

25%

Lifecycle State

20%

Geolocation

15%

Timestamp

10%

Verdicts: high (≥80) · medium (50–79) · low (<50)

NFC Pipeline x402 Paid ECDSA Oracle Arbitrum Sepolia

Agent #3 · Active

Anomaly Agent

5-detector fraud detection

anomaly__analyze_scan 5-detector fraud analysis $0.05 USDC

Velocity

25%

Geo Anomaly

25%

State Progression

20%

Timing Pattern

15%

Reputation

15%

Verdicts: critical (≥80) · suspicious (50–79) · clean (<50)

Fraud Detection x402 Paid 5 Detectors Arbitrum Sepolia

Agent #4 · Active

Recovery Agent

AIRP orchestrator — coordinates Verification + Anomaly agents for loss/theft investigation

recovery__open_case Investigation case + recommendation $0.10 USDC
recovery__assess_risk Combined risk assessment $0.10 USDC

Risk Formula

60% anomaly score + 40% inverted verification

Recommendations: quarantine · monitor · clear
Risk Levels: critical · high · medium · low

AIRP Protocol x402 Paid Multi-Agent Multi-chain

🔌 Protocol Endpoints

4 Protocols

Every agent is reachable via A2A, MCP, REST, and x402 payment flows

A2A

JSON-RPC 2.0

Agent-to-Agent task dispatch with SSE streaming and agent card discovery

GET /.well-known/agent.json

POST /a2a

Task Lifecycle SSE Streaming Agent Cards

MCP

Streamable HTTP

Model Context Protocol — session-based transport for LLM tool use and resource templates

POST /mcp

Stateful Sessions LLM Tool Use Resource Templates

REST API

/api/v1

6 endpoints for agent management, skill invocation, NFC verification, and relayer status

GET /agents List all

GET /agents/:id Details

POST /agents/:id/invoke Invoke

GET /agents/:id/reputation Score

POST /verify NFC

GET /relayer/status Health

x402 Payment

Coinbase x402

Agents pay USDC on Base for verification — atomic pay-and-receive with on-chain escrow

402 → USDC payment → X-PAYMENT header → proof

Escrow: 0x4c9a...A1cF Oracle: api.tagit.network

⛓ On-Chain Infrastructure

Deployment Registry

All contracts verified on their respective block explorers

Contract	Address	Chain
TAGITAgentIdentity	0xA7f34FD595eBc397Fe04DcE012dbcf0fbbD2A78D	OP Sepolia
TAGITAgentReputation	0x57CCa1974DFE29593FBD24fdAEE1cD614Bfd6E4a	OP Sepolia
TAGITAgentValidation	0x9806919185F98Bd07a64F7BC7F264e91939e86b7	OP Sepolia
TAGITCore (proxy)	0x2cb1E0ecE274217F214057c0a829582834Aeaf7f	Arbitrum Sepolia
TAGITAccess	0x676f593c451E4dF2345026af891Acc92c4344455	Arbitrum Sepolia
IdentityBadge	0xEd6a36beB559A8047121B6300fF0060b0E64b5C7	Arbitrum Sepolia
CapabilityBadge	0xa8BbC7f95f5D979e8E9208bc627194384b257c24	Arbitrum Sepolia
TAGITPaymaster	0xBbB9f7dB1C38Af7998b511d8026042755Eb4F4C4	Arbitrum Sepolia
RoboticAuthorizer	0x73E84b5A82164C6c0301A9c4689D60aE9B9050a8	Arbitrum Sepolia
RoboticAuthorizer	0x36DB6d989f0597CF7b243c4Ef1362CC9B9cbB8AE	OP Sepolia
VerificationEscrow	0x4c9aACfcb64169E3BC187c227c4C0e0a5CFDA1cF	Base Sepolia
TimelockController	0x6D7F3242DAFB07b8E873Cf1e0a635536ba241fbA	Arbitrum Sepolia

📡 Indexer & SDK

Developer Tools

Query on-chain agent data and integrate via TypeScript

Goldsky Subgraph

OP Sepolia

tagit-indexer/0.1.0

Real-time on-chain intelligence — every agent action, reputation shift, and validation indexed for enterprise-grade analytics

Real-time Indexing GraphQL API Enterprise Analytics Multi-chain Ready

TypeScript SDK

@tagit/sdk

createAgentClient(config)

Build on TAG IT — integrate autonomous verification into any platform, marketplace, or supply chain in minutes

Plug & Play Partner Integration Headless Commerce Open Source