AgentIndex · ERC-8004 operators
ERC-8004 operator concentration
The ERC-8004 IdentityRegistry on Base mainnet holds 43,827 registered agents across 23,209 owner wallets. 23,674 (54%) are numbered placeholders with no real metadata — leaving 20,153 (46%) 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 | 0x4efb…0bca | 2,293 | 2,293 | 0 | 100% |
| 2 | 0x4602…8101 | 1,656 | 690 | 966 | 42% |
| 3 | 0x83a0…87a0 | 1,243 | 1,243 | 0 | 100% |
| 4 | 0x6772…d053 | 617 | 389 | 228 | 63% |
| 5 | 0x6ffa…99bc | 543 | 543 | 0 | 100% |
| 6 | 0xcc61…8062 | 465 | 0 | 465 | 0% |
| 7 | 0xbbb9…8a02 | 319 | 319 | 0 | 100% |
| 8 | 0x9f10…5d1a | 257 | 30 | 227 | 12% |
| 9 | 0x820c…c8cd | 243 | 0 | 243 | 0% |
| 10 | 0x38dc…db7f | 212 | 0 | 212 | 0% |
| 11 | 0x3395…80e0 | 182 | 182 | 0 | 100% |
| 12 | 0x1030…13c7 | 150 | 27 | 123 | 18% |
| 13 | 0xc605…2f4c | 144 | 0 | 144 | 0% |
| 14 | 0x7346…8ad2 | 138 | 42 | 96 | 30% |
| 15 | 0x4027…29c4 | 131 | 129 | 2 | 98% |
| 16 | 0xb7a2…e78b | 125 | 0 | 125 | 0% |
| 17 | 0xb5a1…8039 | 107 | 0 | 107 | 0% |
| 18 | 0xcbbc…de90 | 101 | 0 | 101 | 0% |
| 19 | 0x7c4b…6eb6 | 98 | 0 | 98 | 0% |
| 20 | 0xb941…bd29 | 91 | 0 | 91 | 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".