Conxian Market SDK (@conxian/market-sdk)

The Verifiable Settlement, Escrow & Trust Layer for Autonomous Agent Commerce (x402) Version: 0.2.0 | Status: Active Production Core | Capabilities: 33 Integrated Modules

🏛 Ecosystem Role & Boundary Alignment

The conxian_market repository (@conxian/market-sdk) serves as the verifiable settlement, escrow, SLA enforcement, and trust layer for autonomous agent commerce (x402).

Rather than building proprietary smart contracts or AI agents, Conxian operates as a Market-Agnostic, Zero-Custody Value Router and Trust Layer on top of x402. Conxian orchestrates and monetizes industrial agent labor through:

• Attestation-Backed x402 Verification: Hardware enclave attestation (TEE/Nitro/KeyMint) verification for agent identity and "Verified by Conxian" trust proof artifacts.
• Programmable Escrow (ERC-8183 / CJCS Job Cards): Non-custodial escrow locks tied to HTTP 402 payment demands and receipts.
• Multi-Rail Bitcoin/Stacks/EVM Settlement: Non-custodial settlement across Lightning, Fedimint, sBTC, ALEX, Citrea, RGB, and EVM ERC-8183.
• Autonomous SLA Enforcement & Dispute Arbitration: Automated delay penalties, gap card bounties, and builder reputation recovery.

┌─────────────────────────────────────────────────────────────────────────┐
│              CONXIAN MARKET: THE M2M TRUST & SETTLEMENT LAYER          │
├─────────────────────────────────────────────────────────────────────────┤
│                                                                          │
│   All other Conxian repos are INFRASTRUCTURE that ENABLES the market.   │
│                                                                          │
│   ┌─────────────┐  ┌─────────────┐  ┌─────────────┐  ┌──────────────┐   │
│   │  x402 Trust │  │ Multi-Rail  │  │ ERC-8183    │  │ Zero-Custody │   │
│   │ Attestation │  │ Settlement  │  │ Escrow      │  │ BYO DeFi     │   │
│   └─────────────┘  └─────────────┘  └─────────────┘  └──────────────┘   │
│                                                                          │
└─────────────────────────────────────────────────────────────────────────┘

🔗 Dependency and Integration Coverage

The Marketplace SDK is intentionally designed to consume the Conxian org stack at the correct abstraction layer:

| Dependency | Status in this Repo | Evidence / Module | Notes | |:-----------|:-------------------|:------------------|:------| | Conxian/Conxian | Deprecated / Archived Reference | src/market_agnostic_router.ts | Custom smart contract development is frozen to eliminate maintenance debt and audit overhead in favor of external BYO DeFi adapters. | | lib-conxian-core | Directly Used | src/core_types.ts | Shared trust-tier, chain, rail, and settlement type definitions. | | conxian-gateway | Directly Used | src/gateway_client.ts & src/settlement.ts | Primary live integration point for REST endpoints and settlement execution. | | conxian-nexus | Directly Used | src/verification.ts | Verification and trust-tier attestation semantics. | | conxius-enclave-sdk | Security Dependency | src/verification.ts & src/x402_facade.ts | Hardware enclave attestation (Nitro/KeyMint/TEE) and BYOK key handling. | | conxius-platform | Control Plane | Org docs & roadmap | CI/CD automation and release rulesets. | | conxian-business | Governance Boundary | src/bos_yield_splitter.ts | Commercial packaging doctrine (80/10/10 split, fee decay, founder vesting). |

🛠 Integrated SDK Modules (33 Capabilities)

The @conxian/market-sdk package exposes 33 integrated capabilities via ConxianMarketSDK:

1. Control Model (verification.ts): TrustTier detection & P0 gap degradation.
2. CJCS Escrow (gateway_client.ts): Programmable Job Card settlement & escrow.
3. Attestation Verifier (verification.ts): TEE (Nitro/KeyMint) & ZK proof validation via Nexus/Gateway.
4. Fee Calculator & Revenue Model (fee_calculator.ts): Tier-based pricing, discounts & revenue projections.
5. Settlement Orchestration (settlement.ts): Multi-rail settlement execution across 8+ rails.
6. Autonomous SLA Engine (sla_engine.ts): Automated job card evaluation, delay penalties, gap cards & builder reputation.
7. Telemetry & Treasury Watcher (monitoring_watcher.ts): sBTC peg health, Fedimint mints, Babylon staking & 12-month runway calculator.
8. TrustTier Middleware (trust_tier_middleware.ts): 4-stage pricing pipeline, SLA template resolution & wire headers.
9. BOS Yield Splitter (bos_yield_splitter.ts): 80/10/10 yield split, fee decay timeline, founder vesting & Thin Orchestrator BYOK guard.
10. Market-Agnostic Router (market_agnostic_router.ts): Zero-custody validation, BYO DeFi protocol adapter resolution, M2M MCP routing & deprecation advisory.
11. Job Card Escrow Engine (job_card_escrow.ts): ERC-8183 programmable escrow creation, output submission, SLA-integrated release, dispute/refund handling & reconciliation.
12. x402 Escrow Gateway & Attestation Proofs (x402_facade.ts): Multi-rail HTTP 402 payment demands, hardware attestation proof verification & "Verified by Conxian" trust artifacts.
13. Client Installation Engine (client_onboarding.ts): Enterprise client onboarding, system setup, domain routing firewall & CLI installer.

📊 Economic & Governance Framework

• Yield Matrix (80/10/10): 80% Builder, 10% Platform Treasury, 10% Ecosystem Stakeholders.
• Protocol Fee Structure: 2.0% launch rate (50% Operations, 30% Founder Vesting, 20% Ecosystem Growth).
• Fee Decay Timeline: 2.0% (0–12m), 1.5% (12–36m), 1.0% (36m+).
• Zero-Custody Mandate: Conxian never touches or custodies client funds or private data.
• Thin Orchestrator & BYOK: Centralized heavy AI inference is prohibited; compute runs at the edge or via user-provided keys.

⚡ Quick Start (x402 Attestation Escrow)

import { ConxianMarketSDK, SettlementRail, TrustTier } from "@conxian/market-sdk";

// Initialize SDK
const sdk = await ConxianMarketSDK.connect({
  baseUrl: "https://gateway.conxian.io",
});

// Create x402 payment demand for job
const demand = sdk.createX402Demand({
  id: "job-101",
  title: "Agent Data Analysis",
  bountySat: 1_000_000n,
});

// Receipt received from client agent
const receipt = {
  demandId: "job-101",
  transactionId: "tx-999",
  amountSat: "1000000",
  paidAt: Date.now(),
  payerDid: "did:conxian:client:alice",
};

// Client enclave attestation certificate
const cert = {
  enclave_attestation: "0xenclave_attestation_proof",
  timestamp: Date.now(),
};

// Verify attestation & lock ERC-8183 escrow with "Verified by Conxian" trust proof
const { escrowRecord, trustProof } = await sdk.processX402PaymentAndLockEscrowWithAttestation(
  demand,
  receipt,
  "did:conxian:agent:bob",
  SettlementRail.Sbtc,
  cert
);

console.log(`Escrow Locked: ${escrowRecord.jobId} (State: ${escrowRecord.state})`);
console.log(`Trust Proof Hash: ${trustProof.proofHash} (Tier: ${trustProof.verifiedTier})`);

📚 Documentation & Research Index

• docs/research/SESSION_66_RESEARCH_EXPANSION_AND_GAP_MATRIX.md - Session 66 M2M Trust Layer research & gap register
• docs/adr/ADR_002_M2M_X402_TRUST_LAYER.md - Architectural decision record for x402 trust layer
• docs/knowledge_base/operating_manual.md - Operating manual & BOS doctrine
• docs/knowledge_base/trust_tier_pricing.md - TrustTier pricing & routing pipeline
• docs/knowledge_base/sla_bounty_system.md - SLA engine & gap card spec
• docs/knowledge_base/monitoring.md - Telemetry & treasury watcher spec
• docs/GOVERNANCE.md - Governance standards & zero-custody mandate
• ROADMAP.md - Multi-session roadmap & execution tracking
• docs/IMPLEMENTATION_TRACKER.md - Live implementation tracker

Intelligence is a Utility. Sovereignty is a Right.