SATI: Solana Agent Trust Infrastructure

Solana's answer to Ethereum's ERC-8004 - A four-registry protocol enabling autonomous AI agents to establish verifiable identity, accumulate portable reputation, manage user delegation, and handle payment mandate lifecycle across organizational boundaries.

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🎯 The Problem

Solana has 50,000+ AI agents deployed (ElizaOS, Solana Agent Kit, GOAT) but zero formal standards for:

• ✗ Agent identity and discovery
• ✗ Cross-platform reputation
• ✗ User-to-agent delegation
• ✗ Payment mandate lifecycle (IntentMandate/CartMandate)
• ✗ Work validation proofs

Meanwhile, Ethereum has ERC-8004 and Google's AP2 protocol. Protocols like Hubble AI choose Base because Solana lacks complete agent infrastructure.

SATI fixes this. First Solana standard with complete AP2 support.

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🏗️ Architecture

SATI provides four composable registries:

1. Identity Registry (SATI-native, ZK Compressed)

• Globally unique agent identifiers
• DID support (did:solana, did:pkh, did:web)
• Protocol endpoint discovery (A2A, MCP, AP2)
• Cost: $2,000 for 1M agents (vs $3.4M traditional)

2. Reputation Registry (SATI-native, Event-Based)

• Pre-authorized client feedback (spam resistant)
• x402 payment proof integration
• Off-chain details with on-chain commitments
• 150ms finality with Alpenglow

3. Delegation Registry (SAS-based Attestations)

• User→agent authorization with expiry
• Capability scoping and spending limits
• Built on Solana Attestation Service primitives

4. Mandate Registry (SATI-native, ZK Compressed)

• Full AP2 IntentMandate & CartMandate support
• Lifecycle states (Active/Revoked/Executed/Zombie/Amended)
• Context drift detection (prevents "zombie mandates")
• Revalidation triggers for changed user context
• First Solana solution to AP2 mandate lifecycle problem

Plus: TEE validation attestations (Phala, Intel TDX, AMD SEV) via SAS

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🚀 Quick Start

# Clone repository
git clone https://github.com/tenequm/sati.git
cd sati

# Install dependencies (uses pnpm)
pnpm install

# Build programs (requires Anchor 0.32.1+)
anchor build

# Build SDK
cd sdk && pnpm build

# Run tests
anchor test

Note: This is a scaffolded repository. Full implementation planned for Q1 2026 (13-week roadmap).

Requirements:

• Rust 1.89.0
• Solana CLI 1.18+
• Anchor 0.32.1+
• Node.js 18+
• pnpm (not npm/yarn)

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💡 Why SATI?

Feature	SATI	aeamcp	s8004	ERC-8004
ZK Compression	✅ 1,600x cheaper	❌	❌	N/A
Alpenglow Ready	✅ 150ms finality	❌	❌	N/A
SAS Integration	✅ Production-tested	❌	❌	N/A
Cross-chain DIDs	✅ Ethereum compatible	❌	❌	✅
User Delegation	✅ Native	Planned	❌	❌
Mandate Lifecycle	✅ Full AP2 support	❌	❌	❌
Zombie Detection	✅ Context drift	❌	❌	❌
Status	Proposed	Devnet	POC	Draft

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🎯 Use Cases

For Agent Frameworks:

• ElizaOS, Solana Agent Kit, GOAT can use SATI for identity
• Agents gain portable reputation across platforms
• Cross-framework agent discovery becomes possible

For Payment Protocols:

• x402 agents get verifiable identities
• Payment proofs integrate with reputation
• Full AP2 mandate lifecycle support (IntentMandate/CartMandate)
• Context drift detection prevents "zombie mandate" chargebacks
• Value-weighted feedback prevents Sybil attacks

For Enterprises:

• Hubble AI can build on Solana (complete AP2 + ERC-8004 compatibility)
• Trust infrastructure for PayAI ecosystem
• Cross-chain agent interoperability (Solana ↔ Ethereum)
• Regulatory compliance (context revalidation for subscription-style payments)

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📚 Documentation

• Complete Specification - 14,000 word technical spec
• Architecture Overview - Visual system design
• ERC-8004 Comparison - Alignment analysis
• TypeScript SDK - Developer integration guide

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🛣️ Roadmap

Phase 1: Core Infrastructure (13 weeks)

• Identity Registry with ZK Compression
• Reputation Registry with x402 integration
• Mandate Registry with full AP2 lifecycle support
• Context drift detection and zombie mandate prevention
• SAS delegation and validation schemas
• Cross-chain DID support

Phase 2: Advanced Features (6 months post-launch)

• Multi-validator consensus orchestrator
• zkML validation implementation
• Wormhole/LayerZero bridge integration
• Light client cross-chain verification
• Advanced mandate revalidation automation

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🤝 Contributing

SATI is a community-driven standard. We welcome:

• Feedback on specification
• Integration proposals (frameworks, protocols)
• Implementation contributions
• Documentation improvements

See CONTRIBUTING.md for guidelines.

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🙏 Acknowledgments

Inspired by:

• ERC-8004 (Ethereum Foundation, MetaMask, Google, Coinbase)
• Solana Attestation Service (Solana Foundation)
• Google's Agent-to-Agent (A2A) Protocol
• Anthropic's Model Context Protocol (MCP)

Built on:

• Light Protocol ZK Compression (1,600x cost reduction)
• Anchor Framework (Solana development)
• Solana Attestation Service (Attestation primitives)

Motivated by:

• Seeing Hubble AI choose Base due to ERC-8004
• Realizing Solana's 50,000+ agents lack trust infrastructure
• Believing Solana deserves best-in-class agent standards

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📞 Connect

• Twitter: @opwizardx
• Related Project: CascadePay (x402 payment splitting)
• Discussion: GitHub Discussions

Built during Solana x402 Hackathon - November 2025

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📄 License

Apache License 2.0

Copyright 2025 Cascade Protocol

SATI is free to use, modify, and build upon under the Apache 2.0 license.