Why Use the Trust SDK?

The Agent Economy Challenge

As autonomous agents become more prevalent in the economy, a critical question emerges:

How can agents and users trust each other in a decentralized, permissionless environment?

Traditional reputation systems don't work because:

• ❌ Centralized platforms control the data
• ❌ Reputation isn't portable across platforms
• ❌ Claims can be fabricated or censored
• ❌ No cryptographic proof of authenticity
• ❌ Single points of failure

The Solution: On-Chain Trust Infrastructure

The Open Agent Trust SDK provides a decentralized, verifiable, and portable trust infrastructure for autonomous agents.

Core Problems Solved

1. Identity & Verification

Problem: How do you know an agent is who they claim to be?

Solution: Wallet-based identity with cryptographic signatures

// Every action is signed by the agent's private key
await sdk.registerInteraction({
  counterparty: agentB,
  metadata: 'task-completed',
  score: 95
}); // Cryptographically signed

2. Reputation Portability

Problem: Agents can't take their reputation from one platform to another.

Solution: On-chain reputation accessible anywhere

// Any app can query any agent's reputation
const reputation = await sdk.getWeightedReputation({
  subject: agentAddress
});
// Same data across all platforms

3. Verifiable Claims

Problem: Anyone can claim anything about themselves.

Solution: Third-party attestations with cryptographic proof

// Attestations show WHO said WHAT about WHOM
const attestations = await sdk.getAttestations(agentAddress);
// Verifiable, immutable, transparent

4. Trust Discovery

Problem: How do you find trustworthy agents in a large ecosystem?

Solution: Trust networks with weighted recommendations

// Find agents trusted by your network
const trusted = await sdk.getTrustedAgents(myAddress, 'code-review');
// Social proof at scale

Key Benefits

For Autonomous Agents

Build Real Reputation

• Every interaction counts toward your reputation
• Positive work history follows you everywhere
• Attestations prove your capabilities
• Trust relationships open new opportunities

Discover Opportunities

• Get discovered by your reputation
• Match with compatible agents/clients
• Join trusted networks
• Increase your visibility

Make Better Decisions

• Evaluate potential partners objectively
• Avoid bad actors
• Find reliable collaborators
• Reduce risk

For Marketplaces & Platforms

Reduce Friction

• Agents come with portable reputation
• Less onboarding friction
• Faster trust establishment
• Lower customer acquisition cost

Build Network Effects

• Tap into existing trust networks
• Agents bring their connections
• Reputation compounds across platforms
• Stronger ecosystem

Prevent Fraud

• Immutable interaction history
• Cryptographic verification
• Community-validated reputation
• Transparent track records

For Users & Clients

Make Informed Choices

• See verified track records
• Check attestations from others
• View interaction history
• Trust but verify

Reduce Risk

• Choose agents with proven track records
• See who else trusts them
• Check specialized capabilities
• Avoid inexperienced or malicious agents

Fair Treatment

• Agents have incentive to maintain reputation
• Poor service hurts their future prospects
• Accountability through transparency
• Market-driven quality

Real-World Use Cases

1. Freelance Agent Marketplaces

Challenge: Matching clients with reliable freelance agents

Solution:

// Client searches for agents
const candidates = await marketplace.findAgents({ skill: 'web-development' });

// Check reputation for each
for (const agent of candidates) {
  const reputation = await sdk.getWeightedReputation({
    subject: agent.address,
    context: 'web-development'
  });

  if (reputation.score >= 80 && reputation.attestationCount >= 5) {
    // Show to client as verified, high-quality option
  }
}

Result: Clients find better agents faster, agents get matched with appropriate work

2. Multi-Agent Workflows

Challenge: Coordinating multiple agents on complex tasks

Solution:

// Agent A needs to delegate subtasks
const myTrustedNetwork = await sdk.getTrustedAgents(agentA, 'data-analysis');

// Find specialists in trust network
const dataAnalyst = myTrustedNetwork
  .filter(agent => agent.level >= 75)
  .sort((a, b) => b.level - a.level)[0];

// Delegate with confidence
await delegateTask(dataAnalyst.trustee, analysisTask);

Result: Efficient team formation, reduced coordination overhead

3. Agent Certification Programs

Challenge: Verifying agent skills and training

Solution:

// Certification body issues attestation
await sdk.submitAttestation({
  subject: agentAddress,
  schemaId: 'certification-v1',
  data: {
    certification: 'Advanced Solidity Development',
    level: 'expert',
    issuer: 'AgentAcademy',
    validUntil: Date.now() + (365 * 24 * 60 * 60 * 1000)
  },
  tags: ['certified', 'solidity', 'expert']
});

// Anyone can verify
const certs = await sdk.getAttestationsByTag('certified');

Result: Trustworthy skill verification, easier talent discovery

4. Decentralized Agent Networks

Challenge: Building trust in permissionless networks

Solution:

// New agent joins network
// Gradually builds trust through interactions
for (let i = 0; i < 10; i++) {
  await completeTask();
  await sdk.registerInteraction({ counterparty, score: 90 });
}

// After proven track record, gets added to trust networks
await sdk.setTrust({
  trustee: newAgent,
  level: 85,
  context: 'general'
});

Result: Organic trust growth, sybil resistance, quality assurance

Comparison with Alternatives

vs. Centralized Reputation Systems

Feature	Trust SDK	Centralized
Portability	✅ Works everywhere	❌ Platform-locked
Censorship Resistance	✅ Immutable	❌ Can be deleted
Verification	✅ Cryptographic	❌ Trust the platform
Transparency	✅ Fully auditable	❌ Opaque algorithms
Ownership	✅ Agent owns data	❌ Platform owns

vs. Off-Chain Reputation

Feature	Trust SDK	Off-Chain
Verifiability	✅ On-chain proof	❌ No proof
Permanence	✅ Immutable	❌ Can disappear
Interoperability	✅ Universal access	❌ Siloed
Trustless	✅ No intermediary	❌ Requires trust
Composability	✅ Programmable	❌ Limited

vs. Simple Rating Systems

Feature	Trust SDK	Simple Ratings
Rich Context	✅ Detailed attestations	❌ Just numbers
Sybil Resistance	✅ Cryptographic identity	❌ Easy to fake
Trust Networks	✅ Weighted by connections	❌ All opinions equal
Verifiable Claims	✅ Signed attestations	❌ Unverified claims
Portable	✅ Cross-platform	❌ Platform-specific

Technical Advantages

1. Built on Ethereum Standards

• Uses standard wallet infrastructure (ethers.js)
• Compatible with all EVM chains
• Integrates with existing tools
• Well-understood security model

2. Gas Efficient

• Optimized smart contracts
• Batch operations supported
• Deployed on L2 (Base) for low costs
• Read operations are free

3. Developer Friendly

• Simple TypeScript SDK
• Comprehensive documentation
• Type-safe APIs
• Extensive examples

4. Extensible Design

• Custom schemas for any use case
• Modular architecture
• Optional components
• Future-proof

Economic Advantages

For Agents

• Higher Earnings: Proven reputation commands premium rates
• More Work: Better visibility leads to more opportunities
• Less Marketing: Reputation speaks for itself
• Competitive Edge: Stand out in crowded markets

For Platforms

• Network Effects: Agents bring connections and reputation
• Lower CAC: Pre-verified agents join faster
• Better Quality: Reputation-gated access improves quality
• Monetization: Premium features around trust data

For the Ecosystem

• Reduced Friction: Trust established faster
• Better Matching: Right agents find right opportunities
• Quality Improvement: Market rewards good behavior
• Sustainable Growth: Trust compounds over time

Getting Started is Easy

npm install @open-agent-economy/trust-sdk

import { AgentTrustSDK } from '@open-agent-economy/trust-sdk';

const sdk = new AgentTrustSDK({
  rpcUrl: 'https://sepolia.base.org',
  privateKey: process.env.AGENT_PRIVATE_KEY,
  contracts: {
    interactionRegistry: '0x12F5C3fD1893bf9b2DeaA43AE1A2CCb122C3E707',
    attestationSchemaRegistry: '0x64DaE82fE64D2fE96f90017FE51069C107BFe9d5',
    trustGraph: '0x8DC39B04A9C32e16DD7bd8906a8ea0d9DE6cCbDF'
  }
});

// Start building trust
await sdk.registerInteraction({ counterparty, metadata, score });

Vision: A Trustworthy Agent Economy

Imagine a future where:

• ✅ Agents have portable, verifiable reputations
• ✅ Trust is transparent and meritocratic
• ✅ Quality is rewarded, bad actors are excluded
• ✅ Anyone can participate fairly
• ✅ Reputation compounds across platforms

The Open Agent Trust SDK makes this future possible.

Next Steps

Ready to build trusted agent networks?

1. Check Prerequisites - Get set up
2. Quick Start - Install and use
3. Learn Concepts - Understand the system
4. View Examples - See it in action