hood// SPDX-License-Identifier: MIT
pragma solidity 0.8.26;
import { IMatterAccount } from "./interfaces/IMatterAccount.sol";
import { Clones } from "./libraries/Clones.sol";
/// @title AgentRegistry
/// @notice Permanent Matter agent names, identities, attestations, and account creation.
/// @dev The immutable admin can only rotate the attester and select the implementation
/// used for future registrations. It has no authority over existing accounts.
contract AgentRegistry {
struct Agent {
uint64 id;
address owner;
address agentKey;
address account;
string name;
string metadataURI;
uint64 registeredAt;
}
error NotAdmin();
error NotAttester();
error NotAgentOwner();
error InvalidAddress();
error InvalidImplementation();
error InvalidName();
error NameUnavailable();
error AgentNotFound();
error Reentrancy();
event AgentRegistered(
uint64 indexed id, address indexed owner, address account, address agentKey, string name
);
event AgentKeyRotated(uint64 indexed id, address newKey);
event AgentOwnershipTransferred(uint64 indexed id, address newOwner);
event MetadataURISet(uint64 indexed id, string uri);
event AttestationRecorded(uint64 indexed id, bytes32 indexed kind, bytes32 dataHash);
event AttesterSet(address indexed attester);
event AccountImplementationSet(address indexed implementation);
// ABI compatibility keeps the deployed getter name lower camel case.
// forge-lint: disable-next-line(screaming-snake-case-immutable)
address public immutable admin;
address public attester;
address public accountImplementation;
uint64 private _totalAgents;
uint256 private _status = 1;
mapping(uint64 id => Agent agent) private _agents;
mapping(bytes32 nameHash => uint64 id) private _idByName;
mapping(uint64 id => mapping(bytes32 kind => bytes32 dataHash)) public attestationOf;
constructor(address admin_, address attester_, address accountImplementation_) {
if (admin_ == address(0) || attester_ == address(0)) revert InvalidAddress();
if (accountImplementation_.code.length == 0) revert InvalidImplementation();
admin = admin_;
attester = attester_;
accountImplementation = accountImplementation_;
emit AttesterSet(attester_);
emit AccountImplementationSet(accountImplementation_);
}
modifier nonReentrant() {
_nonReentrantBefore();
_;
_nonReentrantAfter();
}
function _nonReentrantBefore() private {
if (_status == 2) revert Reentrancy();
_status = 2;
}
function _nonReentrantAfter() private {
_status = 1;
}
function register(string calldata name, address agentKey, string calldata metadataURI)
external
nonReentrant
returns (uint64 id, address account)
{
if (agentKey == address(0)) revert InvalidAddress();
bytes memory rawName = bytes(name);
if (!_validName(rawName)) revert InvalidName();
// Readability is preferable to an assembly-only micro-optimization on registration.
// forge-lint: disable-next-line(asm-keccak256)
bytes32 nameHash = keccak256(rawName);
if (_idByName[nameHash] != 0) revert NameUnavailable();
id = _totalAgents + 1;
_totalAgents = id;
_idByName[nameHash] = id;
account = Clones.clone(accountImplementation);
IMatterAccount(account).initialize(msg.sender, agentKey, address(this), id);
_agents[id] = Agent({
id: id,
owner: msg.sender,
agentKey: agentKey,
account: account,
name: name,
metadataURI: metadataURI,
registeredAt: uint64(block.timestamp)
});
emit AgentRegistered(id, msg.sender, account, agentKey, name);
}
function rotateAgentKey(uint64 id, address newKey) external nonReentrant {
if (newKey == address(0)) revert InvalidAddress();
Agent storage agent = _ownedAgent(id);
agent.agentKey = newKey;
IMatterAccount(agent.account).syncAgentKey(newKey);
emit AgentKeyRotated(id, newKey);
}
function setMetadataURI(uint64 id, string calldata uri) external {
Agent storage agent = _ownedAgent(id);
agent.metadataURI = uri;
emit MetadataURISet(id, uri);
}
function transferAgentOwnership(uint64 id, address newOwner) external nonReentrant {
if (newOwner == address(0)) revert InvalidAddress();
Agent storage agent = _ownedAgent(id);
agent.owner = newOwner;
IMatterAccount(agent.account).syncOwner(newOwner);
emit AgentOwnershipTransferred(id, newOwner);
}
function recordAttestation(uint64 id, bytes32 kind, bytes32 dataHash) external {
if (msg.sender != attester) revert NotAttester();
if (_agents[id].id == 0) revert AgentNotFound();
attestationOf[id][kind] = dataHash;
emit AttestationRecorded(id, kind, dataHash);
}
function agentByName(string calldata name) external view returns (Agent memory) {
uint64 id = _idByName[keccak256(bytes(name))];
if (id == 0) revert AgentNotFound();
return _agents[id];
}
function agentById(uint64 id) external view returns (Agent memory) {
Agent memory agent = _agents[id];
if (agent.id == 0) revert AgentNotFound();
return agent;
}
function totalAgents() external view returns (uint64) {
return _totalAgents;
}
function setAttester(address newAttester) external {
if (msg.sender != admin) revert NotAdmin();
if (newAttester == address(0)) revert InvalidAddress();
attester = newAttester;
emit AttesterSet(newAttester);
}
function setAccountImplementation(address newImplementation) external {
if (msg.sender != admin) revert NotAdmin();
if (newImplementation.code.length == 0) revert InvalidImplementation();
accountImplementation = newImplementation;
emit AccountImplementationSet(newImplementation);
}
function _ownedAgent(uint64 id) private view returns (Agent storage agent) {
agent = _agents[id];
if (agent.id == 0) revert AgentNotFound();
if (msg.sender != agent.owner) revert NotAgentOwner();
}
function _validName(bytes memory name) private pure returns (bool) {
if (name.length < 3 || name.length > 20) return false;
for (uint256 i; i < name.length; ++i) {
bytes1 char = name[i];
if (!((char >= 0x61 && char <= 0x7a) || (char >= 0x30 && char <= 0x39) || char == 0x2d))
{
return false;
}
}
return true;
}
}[
{
"type": "constructor",
"inputs": [
{
"name": "admin_",
"type": "address",
"internalType": "address"
},
{
"name": "attester_",
"type": "address",
"internalType": "address"
},
{
"name": "accountImplementation_",
"type": "address",
"internalType": "address"
}
],
"stateMutability": "nonpayable"
},
{
"name": "AgentNotFound",
"type": "error",
"inputs": []
},
{
"name": "FailedCreateClone",
"type": "error",
"inputs": []
},
{
"name": "InvalidAddress",
"type": "error",
"inputs": []
},
{
"name": "InvalidImplementation",
"type": "error",
"inputs": []
},
{
"name": "InvalidName",
"type": "error",
"inputs": []
},
{
"name": "NameUnavailable",
"type": "error",
"inputs": []
},
{
"name": "NotAdmin",
"type": "error",
"inputs": []
},
{
"name": "NotAgentOwner",
"type": "error",
"inputs": []
},
{
"name": "NotAttester",
"type": "error",
"inputs": []
},
{
"name": "Reentrancy",
"type": "error",
"inputs": []
},
{
"name": "AccountImplementationSet",
"type": "event",
"inputs": [
{
"name": "implementation",
"type": "address",
"indexed": true,
"internalType": "address"
}
],
"anonymous": false
},
{
"name": "AgentKeyRotated",
"type": "event",
"inputs": [
{
"name": "id",
"type": "uint64",
"indexed": true,
"internalType": "uint64"
},
{
"name": "newKey",
"type": "address",
"indexed": false,
"internalType": "address"
}
],
"anonymous": false
},
{
"name": "AgentOwnershipTransferred",
"type": "event",
"inputs": [
{
"name": "id",
"type": "uint64",
"indexed": true,
"internalType": "uint64"
},
{
"name": "newOwner",
"type": "address",
"indexed": false,
"internalType": "address"
}
],
"anonymous": false
},
{
"name": "AgentRegistered",
"type": "event",
"inputs": [
{
"name": "id",
"type": "uint64",
"indexed": true,
"internalType": "uint64"
},
{
"name": "owner",
"type": "address",
"indexed": true,
"internalType": "address"
},
{
"name": "account",
"type": "address",
"indexed": false,
"internalType": "address"
},
{
"name": "agentKey",
"type": "address",
"indexed": false,
"internalType": "address"
},
{
"name": "name",
"type": "string",
"indexed": false,
"internalType": "string"
}
],
"anonymous": false
},
{
"name": "AttestationRecorded",
"type": "event",
"inputs": [
{
"name": "id",
"type": "uint64",
"indexed": true,
"internalType": "uint64"
},
{
"name": "kind",
"type": "bytes32",
"indexed": true,
"internalType": "bytes32"
},
{
"name": "dataHash",
"type": "bytes32",
"indexed": false,
"internalType": "bytes32"
}
],
"anonymous": false
},
{
"name": "AttesterSet",
"type": "event",
"inputs": [
{
"name": "attester",
"type": "address",
"indexed": true,
"internalType": "address"
}
],
"anonymous": false
},
{
"name": "MetadataURISet",
"type": "event",
"inputs": [
{
"name": "id",
"type": "uint64",
"indexed": true,
"internalType": "uint64"
},
{
"name": "uri",
"type": "string",
"indexed": false,
"internalType": "string"
}
],
"anonymous": false
},
{
"name": "accountImplementation",
"type": "function",
"inputs": [],
"outputs": [
{
"name": "",
"type": "address",
"internalType": "address"
}
],
"stateMutability": "view"
},
{
"name": "admin",
"type": "function",
"inputs": [],
"outputs": [
{
"name": "",
"type": "address",
"internalType": "address"
}
],
"stateMutability": "view"
},
{
"name": "agentById",
"type": "function",
"inputs": [
{
"name": "id",
"type": "uint64",
"internalType": "uint64"
}
],
"outputs": [
{
"name": "",
"type": "tuple",
"components": [
{
"name": "id",
"type": "uint64",
"internalType": "uint64"
},
{
"name": "owner",
"type": "address",
"internalType": "address"
},
{
"name": "agentKey",
"type": "address",
"internalType": "address"
},
{
"name": "account",
"type": "address",
"internalType": "address"
},
{
"name": "name",
"type": "string",
"internalType": "string"
},
{
"name": "metadataURI",
"type": "string",
"internalType": "string"
},
{
"name": "registeredAt",
"type": "uint64",
"internalType": "uint64"
}
],
"internalType": "struct AgentRegistry.Agent"
}
],
"stateMutability": "view"
},
{
"name": "agentByName",
"type": "function",
"inputs": [
{
"name": "name",
"type": "string",
"internalType": "string"
}
],
"outputs": [
{
"name": "",
"type": "tuple",
"components": [
{
"name": "id",
"type": "uint64",
"internalType": "uint64"
},
{
"name": "owner",
"type": "address",
"internalType": "address"
},
{
"name": "agentKey",
"type": "address",
"internalType": "address"
},
{
"name": "account",
"type": "address",
"internalType": "address"
},
{
"name": "name",
"type": "string",
"internalType": "string"
},
{
"name": "metadataURI",
"type": "string",
"internalType": "string"
},
{
"name": "registeredAt",
"type": "uint64",
"internalType": "uint64"
}
],
"internalType": "struct AgentRegistry.Agent"
}
],
"stateMutability": "view"
},
{
"name": "attestationOf",
"type": "function",
"inputs": [
{
"name": "id",
"type": "uint64",
"internalType": "uint64"
},
{
"name": "kind",
"type": "bytes32",
"internalType": "bytes32"
}
],
"outputs": [
{
"name": "dataHash",
"type": "bytes32",
"internalType": "bytes32"
}
],
"stateMutability": "view"
},
{
"name": "attester",
"type": "function",
"inputs": [],
"outputs": [
{
"name": "",
"type": "address",
"internalType": "address"
}
],
"stateMutability": "view"
},
{
"name": "recordAttestation",
"type": "function",
"inputs": [
{
"name": "id",
"type": "uint64",
"internalType": "uint64"
},
{
"name": "kind",
"type": "bytes32",
"internalType": "bytes32"
},
{
"name": "dataHash",
"type": "bytes32",
"internalType": "bytes32"
}
],
"outputs": [],
"stateMutability": "nonpayable"
},
{
"name": "register",
"type": "function",
"inputs": [
{
"name": "name",
"type": "string",
"internalType": "string"
},
{
"name": "agentKey",
"type": "address",
"internalType": "address"
},
{
"name": "metadataURI",
"type": "string",
"internalType": "string"
}
],
"outputs": [
{
"name": "id",
"type": "uint64",
"internalType": "uint64"
},
{
"name": "account",
"type": "address",
"internalType": "address"
}
],
"stateMutability": "nonpayable"
},
{
"name": "rotateAgentKey",
"type": "function",
"inputs": [
{
"name": "id",
"type": "uint64",
"internalType": "uint64"
},
{
"name": "newKey",
"type": "address",
"internalType": "address"
}
],
"outputs": [],
"stateMutability": "nonpayable"
},
{
"name": "setAccountImplementation",
"type": "function",
"inputs": [
{
"name": "newImplementation",
"type": "address",
"internalType": "address"
}
],
"outputs": [],
"stateMutability": "nonpayable"
},
{
"name": "setAttester",
"type": "function",
"inputs": [
{
"name": "newAttester",
"type": "address",
"internalType": "address"
}
],
"outputs": [],
"stateMutability": "nonpayable"
},
{
"name": "setMetadataURI",
"type": "function",
"inputs": [
{
"name": "id",
"type": "uint64",
"internalType": "uint64"
},
{
"name": "uri",
"type": "string",
"internalType": "string"
}
],
"outputs": [],
"stateMutability": "nonpayable"
},
{
"name": "totalAgents",
"type": "function",
"inputs": [],
"outputs": [
{
"name": "",
"type": "uint64",
"internalType": "uint64"
}
],
"stateMutability": "view"
},
{
"name": "transferAgentOwnership",
"type": "function",
"inputs": [
{
"name": "id",
"type": "uint64",
"internalType": "uint64"
},
{
"name": "newOwner",
"type": "address",
"internalType": "address"
}
],
"outputs": [],
"stateMutability": "nonpayable"
}
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| Token | Symbol | Balance | Price | Value |
|---|---|---|---|---|
| no token holdings | ||||
| Block | Age | Parent Transaction Hash | Type | Method | From | To | Value | |
|---|---|---|---|---|---|---|---|---|
| 18,646,639 | 30 days agoSat, 25 Jul 2026 02:20:05 UTC | 0x4654e1…38f8fa | CREATE | register | 0x258b…e208 | OUT | 0x0fc9…7fec | 0 ETH |
| 17,886,025 | 31 days agoFri, 24 Jul 2026 05:08:44 UTC | 0xd68f02…a8bad1 | CREATE | register | 0x258b…e208 | OUT | 0x8999…427e | 0 ETH |
| 17,779,266 | 31 days agoFri, 24 Jul 2026 02:10:10 UTC | 0x4d81ee…c13f1f | CREATE | register | 0x258b…e208 | OUT | 0x4a10…4df0 | 0 ETH |
| 16,865,532 | 32 days agoThu, 23 Jul 2026 00:43:23 UTC | 0x91b1f7…72052a | CREATE | register | 0x258b…e208 | OUT | 0x1d3c…961e | 0 ETH |
| Txn Hash | Age | Event | Topics / Data |
|---|---|---|---|
| 0x4654e1…38f8fa | 30 days agoSat, 25 Jul 2026 02:20:05 UTC | 0xea691e…d66a | [0] 0x000000000000…00000004 [1] 0x000000000000…a75a27ec data: 0x000000000000000000…00000000 |
| 0xd68f02…a8bad1 | 31 days agoFri, 24 Jul 2026 05:08:44 UTC | 0xea691e…d66a | [0] 0x000000000000…00000003 [1] 0x000000000000…6463515b data: 0x000000000000000000…00000000 |
| 0x4d81ee…c13f1f | 31 days agoFri, 24 Jul 2026 02:10:10 UTC | 0xea691e…d66a | [0] 0x000000000000…00000002 [1] 0x000000000000…a842c62a data: 0x000000000000000000…00000000 |
| 0x91b1f7…72052a | 32 days agoThu, 23 Jul 2026 00:43:23 UTC | 0xea691e…d66a | [0] 0x000000000000…00000001 [1] 0x000000000000…6ee77d01 data: 0x000000000000000000…00000000 |
| 0x60a595…7ff6d3 | 32 days agoWed, 22 Jul 2026 22:08:48 UTC | 0xb753c8…750a | [0] 0x000000000000…bb768cfa |
| 0x60a595…7ff6d3 | 32 days agoWed, 22 Jul 2026 22:08:48 UTC | 0x83ae38…6724 | [0] 0x000000000000…6ee77d01 |
| Transaction Hash | Method ? | Block | Age | From | To | Amount | Txn Fee ? | ||
|---|---|---|---|---|---|---|---|---|---|
| 0x4654e1…38f8fa | register | 18,646,639 | 30 days agoSat, 25 Jul 2026 02:20:05 UTC | 0xbad0…27ec | IN | AgentRegistry | $0.000 ETH | 0.00003331 | |
| 0xd68f02…a8bad1 | register | 17,886,025 | 31 days agoFri, 24 Jul 2026 05:08:44 UTC | 0x8b3b…515b | IN | AgentRegistry | $0.000 ETH | 0.00003907 | |
| 0x4d81ee…c13f1f | register | 17,779,266 | 31 days agoFri, 24 Jul 2026 02:10:10 UTC | 0xaea9…c62a | IN | AgentRegistry | $0.000 ETH | 0.00003967 | |
| 0x91b1f7…72052a | register | 16,865,532 | 32 days agoThu, 23 Jul 2026 00:43:23 UTC | 0xd397…7d01 | IN | AgentRegistry | $0.000 ETH | 0.00003094 |
| Type | Age | Block | Details |
|---|---|---|---|
| no cross-chain L1↔L2 transactions for this address | |||
| Transaction Hash | Method | Block | Age | From | To | Amount | Token | ||
|---|---|---|---|---|---|---|---|---|---|
| no token transfers for this address yet | |||||||||
| Transaction Hash | Method | Block | Age | From | To | Type | Item | ||
|---|---|---|---|---|---|---|---|---|---|
| no NFT transfers for this address yet | |||||||||