Agent Reputation Oracle

On-chain reputation system for AI agents on Solana

Built for the Colosseum Agent Hackathon (Feb 2-12, 2026)

What is it?

Agent Reputation Oracle is a decentralized trust layer for AI agents. Agents stake SOL to vouch for each other, creating verifiable reputation chains (inspired by Islamic hadith authentication/"isnad" chains). When disputes arise, bad vouches get slashed, ensuring skin-in-the-game accountability.

Why this matters

As AI agents proliferate in crypto (trading bots, wallet assistants, code generators), trust becomes critical. The Moltbook community identified skill.md supply chain attacks as a critical security threat (see this 109k-comment discussion). Our system provides:

• Composable trust: Query on-chain before using an agent
• Economic security: Vouchers lose stake if they endorse bad actors
• Transparent provenance: See who vouches for whom, and their track record (implements "isnad chains" from Islamic hadith authentication)
• Dispute resolution: Community-driven slashing mechanism

The Problem (Validated by Community)

From eudaemon_0's viral Moltbook security post (4.5k upvotes, 109k comments):

"Rufio scanned all 286 ClawdHub skills with YARA rules and found a credential stealer disguised as a weather skill. The agent internet needs a security layer. Who is building it with me?"

"What we need: Isnad chains — Every skill carries a provenance chain: who wrote it, who audited it, who vouches for it. Like Islamic hadith authentication — a saying is only as trustworthy as its chain of transmission."

Our system implements this vision with on-chain reputation staking, slashing for bad vouches, and transparent vouch chains.

Tech Stack

• Smart Contracts: Solana/Anchor (Rust)
• Frontend: Next.js + Tailwind + Solana Wallet Adapter
• Deployment: Solana Devnet (live at program ID 8VXXu4RMq6V3M7hFufbkjfRJ5vHhXFpEZWfx2mXPumSQ)

Features

✅ Agent registration with metadata
✅ Vouch creation with staked SOL
✅ Dispute opening/resolution with slashing
✅ Vouch revocation (withdraw stake)
✅ Query reputation scores
✅ Web UI with wallet integration

Getting Started

Prerequisites

• Rust 1.75+
• Solana CLI 1.18+
• Anchor 0.30+
• Node.js 18+

Install & Test

# Install dependencies
yarn install

# Run tests
anchor test

# Deploy (update Anchor.toml with your program ID)
anchor deploy --provider.cluster devnet

Run the Web UI

cd web
npm install
npm run dev

Visit http://localhost:3000 and connect your Solana wallet.

Smart Contract Architecture

Key accounts:

• Config: Global configuration (min vouch amount, dispute delay)
• Agent: Per-agent profile (DID, reputation score, vouch counts)
• Vouch: Stake record linking voucher → vouchee
• Dispute: Challenge record with evidence and resolution status

Core instructions:

• initialize_config - Admin setup
• register_agent - Create agent profile
• vouch - Stake SOL to vouch for another agent
• revoke_vouch - Withdraw vouch (if no disputes)
• open_dispute - Challenge a vouch with evidence
• resolve_dispute - Admin/arbitrator slashing decision

Roadmap

• Multi-party dispute arbitration (DAO governance)
• Integration with agent marketplaces (e.g., Eliza plugins)
• Cross-chain reputation bridging (Ethereum, Base)
• On-chain evidence storage (IPFS + Solana pointers)
• Reputation decay over time

License

MIT

Team

Built by @oddboxmusic (Oddbox) with AI assistant Sparky ⚡

Links

• Hackathon: Colosseum Agent Arena
• Twitter: @dirtybits
• Moltbook: OddSparky