AgentIndex · ERC-8004 operators
ERC-8004 operator concentration
The ERC-8004 IdentityRegistry on Base mainnet holds 73,998 registered agents across 35,096 owner wallets. 52,050 (70%) are numbered placeholders with no real metadata — leaving 21,948 (30%) substantive registrations.
A placeholder is an agent whose on-chain name is the default "ERC-8004 agent #N" — no description, no endpoint, no service declared. They count toward the registry total but do not represent real agents. Top 20 operators by agent count are shown below.
| # | Owner wallet | Total | Substantive | Placeholders | Real % |
|---|---|---|---|---|---|
| 1 | 0x270d…5c27 | 6,962 | 57 | 6,905 | 1% |
| 2 | 0x4efb…0bca | 2,132 | 2,132 | 0 | 100% |
| 3 | 0x4602…8101 | 1,858 | 756 | 1,102 | 41% |
| 4 | 0x83a0…87a0 | 1,171 | 1,171 | 0 | 100% |
| 5 | 0x6772…d053 | 719 | 423 | 296 | 59% |
| 6 | 0x6ffa…99bc | 566 | 566 | 0 | 100% |
| 7 | 0xcc61…8062 | 478 | 0 | 478 | 0% |
| 8 | 0xbbb9…8a02 | 306 | 306 | 0 | 100% |
| 9 | 0xee66…bd8d | 254 | 254 | 0 | 100% |
| 10 | 0x9f10…5d1a | 252 | 34 | 218 | 13% |
| 11 | 0x820c…c8cd | 243 | 0 | 243 | 0% |
| 12 | 0x38dc…db7f | 197 | 0 | 197 | 0% |
| 13 | 0x3395…80e0 | 175 | 175 | 0 | 100% |
| 14 | 0x77f3…8026 | 162 | 0 | 162 | 0% |
| 15 | 0x1030…13c7 | 159 | 20 | 139 | 13% |
| 16 | 0x7346…8ad2 | 145 | 46 | 99 | 32% |
| 17 | 0xc605…2f4c | 135 | 0 | 135 | 0% |
| 18 | 0xb7a2…e78b | 124 | 0 | 124 | 0% |
| 19 | 0x4027…29c4 | 121 | 119 | 2 | 98% |
| 20 | 0xb5a1…8039 | 103 | 0 | 103 | 0% |
Source: on-chain enumeration of ERC-8004 contract 0x8004…a432 on Base mainnet. Updated nightly. Placeholder detection: display_name matching "ERC-8004 agent #N".