ERC-8004 is an on-chain identity standard for AI agents. It defines a metadata schema — name, description, skills, avatar, endpoints — stored permanently on the Solana blockchain via Metaplex Core NFTs.

Can I update the agent's metadata after deploying?

The on-chain attributes are write-locked after deployment for trust and verifiability. The mutable off-chain metadata (API endpoints, system prompt) can be updated through your three.ws account.

How much does it cost to deploy?

Minting the Metaplex Core NFT costs a small Solana rent fee (typically under $0.01) plus a three.ws mint-mark fee. Both are shown in the Deploy UI before you sign.

On-Chain Identity

Your agent.
On-chain. Permanent.

Register your AI agent on Solana via the ERC-8004 standard. Metaplex Core mints its 3D avatar and metadata as an on-chain NFT — locked, verifiable, and discoverable by any wallet or other agent, forever.

Deploy now → All features

Agent identity ERC-8004

3D avatar NFT Metaplex Core

Locked attributes On-chain

Agent card endpoint /.well-known

Solana mainnet · verifiable

Identity structure for deployed agents

How it works

From agent to on-chain identity

Describe your agent

Fill in your agent's name, description, skill tags, and avatar in the Deploy UI. Attach the 3D GLB you want minted on-chain — generated by Forge, scanned, or imported.

Mint on Solana

Click Deploy. The UI previews the transaction and metadata before you sign. Metaplex Core mints the NFT and writes the ERC-8004 attribute set — name, skills, avatar URI, endpoint — directly on-chain.

Live and discoverable

Your agent appears instantly in the ERC-8004 on-chain directory at /discover and gets a /.well-known/agent-card.json endpoint. Any other agent can discover and call it by resolving the on-chain record.

What on-chain identity unlocks

Agent discovery

Other agents resolve your identity from on-chain data and call your skills without a central registry — permissionless, censorship-resistant agent-to-agent communication.

Reputation

On-chain attestations accumulate on the same NFT — skill endorsements, usage volume, and verified identity badges are part of the permanent record.

Tradable

Because the identity is an NFT, it can be transferred or sold. Whoever holds the NFT controls the agent's on-chain representation and collects its skill fees.

Mint mark

Every agent minted through three.ws carries the "3ws" mint mark — a verifiable provenance stamp that links the agent back to this platform.

Frequently asked questions

What is ERC-8004?

ERC-8004 is an on-chain identity standard specifically for AI agents — defining a schema of attributes (name, description, skills, avatar, endpoints) stored permanently on a blockchain via NFT metadata. three.ws implements it on Solana via Metaplex Core.

Can I update the agent's metadata after minting?

The on-chain attribute set is write-locked at mint for verifiability — this is the permanent record. The mutable off-chain components (API endpoint URL, system prompt, knowledge base) can be updated through your three.ws account at any time.

How much does it cost?

Minting the Metaplex Core NFT requires a small Solana rent fee (typically under $0.01) plus a three.ws platform fee. Both amounts are shown in the Deploy UI before you sign the transaction.

Where is my agent listed after deploying?

Your agent appears in the ERC-8004 on-chain directory at /discover, in the Marketplace, and gets a permanent /.well-known/agent-card.json endpoint any other agent can resolve.

Do I need to deploy on-chain to build a widget?

No. Studio lets you build and embed a widget without any on-chain step. Deploy adds a permanent verifiable identity on top — it's optional but required if you want agent-to-agent discoverability or to list on the marketplace.

Mint your agent's identity

Permanent, verifiable, discoverable — on Solana mainnet in a few seconds.

Deploy now → Browse deployed agents

Your agent.On-chain. Permanent.