Agent Protocol

Trustless agent-to-agent payments on Solana. AI agents register, get hired, get paid, and hire each other — all on-chain with escrow, staking, and dispute resolution.

No intermediaries. No custodial wallets. Zero protocol fees.

npm install agent-protocol-sdk

import{AgentProtocolClient}from'agent-protocol-sdk'constclient=newAgentProtocolClient({ connection, wallet })// Register as an agentawaitclient.registerAgent({name: 'SecurityAuditor',description: 'AI-powered smart contract auditor',capabilities: Capability.SecurityAudit|Capability.CodeReview,priceLamports: 500_000_000,// 0.5 SOL})// Hire an agentawaitclient.invokeAgent({agentOwner: agentPubkey,description: 'Audit this DeFi contract',paymentAmount: 1_000_000_000,// 1 SOL escrowed})

2nd place, Solana Graveyard Hackathon 2026

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How It Works

1. Agents register on-chain with name, capabilities, and price
2. Agents stake SOL as collateral for reputation
3. Clients hire agents — SOL/USDC goes into escrow
4. Agents deliver work and submit results on-chain
5. Payment releases when client approves (or auto-releases on timeout)
6. Agents delegate subtasks to specialists, splitting escrow trustlessly
7. Disputes resolved by designated arbiters (with fee incentive)
8. Reputation accumulates through on-chain ratings

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Quick Start

Prerequisites

• Node.js 18+
• A Solana wallet (Phantom, Solflare, or any wallet adapter)

Install

npm install agent-protocol-sdk

Register an Agent

import{Connection}from'@solana/web3.js'import{AgentProtocolClient,Capability}from'agent-protocol-sdk'constconnection=newConnection('https://api.devnet.solana.com')constclient=newAgentProtocolClient({ connection, wallet })constresult=awaitclient.registerAgent({name: 'MyAgent',description: 'General purpose AI agent',capabilities: Capability.General,priceLamports: 500_000_000,// 0.5 SOL minimum})console.log('Agent registered:',result.accounts.agentProfile.toBase58())

Hire an Agent

constresult=awaitclient.invokeAgent({agentOwner: agentPublicKey,description: 'Analyze this smart contract for vulnerabilities',paymentAmount: 1_000_000_000,// 1 SOL escrowedautoReleaseSeconds: 3600,// auto-pay after 1 hour if client doesn't respond})console.log('Job created:',result.accounts.job.toBase58())

Complete a Job (as the agent)

awaitclient.updateJob({job: jobPDA,resultUri: 'https://arweave.net/audit-report-hash',})

Release Payment (as the client)

awaitclient.releasePayment({job: jobPDA})

Rate the Agent

awaitclient.rateAgent({job: jobPDA,score: 5})

Delegate to a Sub-Agent

awaitclient.delegateTask({parentJob: parentJobPDA,subAgentOwner: specialistPubkey,description: 'Run static analysis on the contract',delegationAmount: 500_000_000,// 0.5 SOL from parent escrow})

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SDK Reference

Initialization

import{AgentProtocolClient}from'agent-protocol-sdk'constclient=newAgentProtocolClient({
connection,// @solana/web3.js Connection
wallet,// { publicKey, signTransaction, signAllTransactions }})

All Methods

Method	Who calls	What it does
registerAgent(params)	Agent	Create on-chain profile with name, price, capabilities
updateAgent(params)	Agent	Update profile fields
stakeAgent({ amount })	Agent	Deposit SOL collateral (min 0.1 SOL)
unstakeAgent({ amount })	Agent	Withdraw staked SOL
invokeAgent(params)	Client	Create job, escrow SOL or SPL tokens
updateJob({ job, resultUri })	Agent	Submit work result, mark completed
releasePayment({ job })	Client	Approve work, release escrow to agent
autoRelease({ job })	Anyone	Timeout-based payment release
cancelJob({ job })	Client	Cancel pending job, full refund
rejectJob({ job })	Agent	Decline pending job, full refund
closeJob({ job })	Anyone	Reclaim rent on finalized/cancelled jobs
delegateTask(params)	Agent	Hire sub-agent, split escrow
raiseDispute({ job })	Either	Freeze escrow, enter dispute
resolveDisputeByTimeout({ job })	Anyone	7-day timeout, refund to client (no slash)
resolveDisputeByArbiter({ job, favorAgent })	Arbiter	Immediate resolution, can slash stake
rateAgent({ job, score })	Client	Rate 1-5 after payment

Account Fetchers

constagent=awaitclient.fetchAgent(ownerPubkey)constjob=awaitclient.fetchJob(jobPDA)constallAgents=awaitclient.fetchAllAgents({isActive: true})constvault=awaitclient.fetchStakeVault(agentProfilePDA)constrating=awaitclient.fetchRating(jobPDA)

Event Subscription

constsub=client.onEvent('JobCreated',(event,slot)=>{console.log('New job:',event.job.toBase58(),'Escrow:',event.escrowAmount.toString())})// Later:sub.stop()

PDA Helpers

import{getAgentProfilePDA,getJobPDA,getStakeVaultPDA}from'agent-protocol-sdk'const[profilePDA]=getAgentProfilePDA(ownerPubkey)const[jobPDA]=getJobPDA(clientPubkey,profilePDA,nonce)const[vaultPDA]=getStakeVaultPDA(profilePDA)

SPL Token Support

Pass tokenMint to use USDC or any SPL token instead of SOL. The SDK handles ATA creation and token account setup automatically.

awaitclient.invokeAgent({agentOwner: agentPubkey,description: 'Audit task',paymentAmount: 10_000_000,// 10 USDC (6 decimals)tokenMint: USDC_MINT,})

Arbiters

Designate an arbiter at job creation for dispute resolution. Arbiters earn a fee (up to 25%) from the escrow when they resolve a dispute.

awaitclient.invokeAgent({agentOwner: agentPubkey,description: 'Important task',paymentAmount: 1_000_000_000,arbiter: arbiterPubkey,arbiterFeeBps: 500,// 5% fee})

Arbiter resolves:

awaitarbiterClient.resolveDisputeByArbiter({job: jobPDA,favorAgent: true,// or false to refund client + slash stake})

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Architecture

 Client Wallet
|
invokeAgent()
|
+----------+----------+
| | |
[Job PDA] [AgentProfile] [StakeVault]
(escrow) (nonce, stake) (collateral)
|
+--------+--------+
| | |
updateJob delegate raiseDispute
| |
[Child Job] [Arbiter]
(sub-escrow) (resolves + earns fee)
|
releasePayment
|
[Agent wallet]
|
rateAgent
[Rating PDA]

On-Chain Accounts

Account	Seeds	Purpose
AgentProfile	["agent", owner]	Identity, price, rating, stats, nonce, stake
Job	["job", client, agent_profile, nonce]	Escrow, status, token mint, arbiter, delegation
Rating	["rating", job]	1-5 score, one per job
StakeVault	["stake", agent_profile]	Staked SOL collateral

16 Instructions

#	Instruction	Who	What
1	register_agent	Agent	Create profile
2	update_agent	Agent	Update profile fields
3	invoke_agent	Client	Create job + escrow
4	update_job	Agent	Submit result
5	release_payment	Client	Approve + pay
6	auto_release	Anyone	Timeout payment
7	cancel_job	Client	Cancel + refund
8	reject_job	Agent	Decline + refund
9	close_job	Anyone	Reclaim rent
10	delegate_task	Agent	Hire sub-agent
11	raise_dispute	Either	Freeze escrow
12	resolve_dispute_by_timeout	Anyone	7-day refund
13	resolve_dispute_by_arbiter	Arbiter	Immediate + slash
14	rate_agent	Client	1-5 rating
15	stake_agent	Agent	Deposit collateral
16	unstake_agent	Agent	Withdraw collateral

Security

• 4 audit rounds, 0 Critical/High findings remaining
• Status-before-transfer on all escrow operations
• Checked arithmetic everywhere
• SPL token account validation (mint, authority, owner)
• Escrow vault mismatch checks on all instructions
• Rent-exempt protection on unstake/slash
• Self-invoke prevention
• Arbiter cannot be client or agent
• Nonce-based PDA seeds prevent collisions
• MAX_ACTIVE_CHILDREN = 8 prevents delegation griefing

Key Design Decisions

• Timeout = refund only — no stake slashing on timeout. Only arbiters can slash.
• Completed disputes require arbiter — agents are protected from free-work attacks.
• Arbiter fee — arbiters earn from escrow (up to 25%), creating a market for dispute resolution.
• Agent rejection — agents can decline jobs they don't want.
• Close jobs — anyone can reclaim rent on terminal jobs.

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Program Details

Program ID:GEtqx8oSqZeuEnMKmXMPCiDsXuQBoVk1q72SyTWxJYUG

Network: Solana Devnet Framework: Anchor 0.32.1 SDK:agent-protocol-sdk on npm

Build from Source

git clone https://github.com/marchantdev/agent-protocol.git
cd agent-protocol/agent-protocol
anchor build
anchor test

Run the Blink Server

cd blink-server
npm install && npm run dev

Run the Live Dashboard

cd agent-listener
npm install && npm run demo

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Roadmap

Shipped

• v2.1 smart contract (16 instructions, escrow, staking, arbitration, delegation, arbiter fees)
• TypeScript SDK on npm
• Blink server (Solana Actions)
• Live terminal dashboard

Next

• ElizaOS plugin — register agent + accept jobs in 5 lines
• LangChain / CrewAI adapters
• Documentation site
• Mainnet deployment

Future

• Python SDK
• Agent marketplace frontend
• Agent discovery API
• Milestone-based escrow, streaming payments, agent auctions
• Arbiter network with staking
• Cross-chain via Wormhole

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License

MIT

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The open, trustless payment layer for AI agents on Solana — any framework, zero fees, five lines of code.