Agents
Agent census
Every ERC-8004 agent registered on Robinhood Chain, read once: which registration cards load, which agents answer over MCP or x402, and where x402 pays.
On this page
The numbers
Showing the live census table: last check 2026-11-05 13:49 UTC. Agents the job has not checked yet show their 2026-10-28 snapshot row.
- 21,414 agents registered; 21,250 checked by the live census so far.
- 11,034 (52%) of the checked have a broken card.
- 6,186 cards claim x402; 59 of them gave no payment terms.
- 6,131 agents are real x402 sellers; 10 of them pay to their registered agent wallet.
- 970 agents answer over MCP; 59 agents answer over MCP or x402 outside the two big platforms, Alpharc and BV-7X.
- 6 agents run both MCP and x402.
- 561 registered and 452 changes recorded in the last 24 hours.
First read 2026-10-28 at block 100007973. Identity registry 0x8004A169FB4a3325136EB29fA0ceB6D2e539a432.
First published with numbers from an incomplete pass (one platform rate-limited us); corrected 2026-10-28 15:30 UTC.
The first read, 2026-10-28
- 20,046 agents registered.
- 6,515 (32.5%) answer as a real service: 943 over MCP, 5,575 over x402.
- 10,812 (53.9%) have a broken card; 10,527 of them point at one host, hoodai.fly.dev, which no longer resolves.
- 5,642 cards claim x402; 68 of them gave no payment terms.
- 5,575 agents are real x402 sellers; 4 of them pay to their registered agent wallet.
- 32 agents answer over MCP or x402 outside the two big platforms, Alpharc (914 MCP servers, one per token) and BV-7X (5,569 x402 endpoints, one per strategy).
- 3 agents run both MCP and x402.
- 1,698 answer only on a website; 1,021 have a card that loads but nothing it declares answers.
Every agent
Agent #20423 BrainChain
Live census table, last checked 2026-11-03 08:33 UTC.
- Class
- site only
- Card
- loads and parses, host usebrainchain.com
- MCP
- declared, no valid answer
- x402
- declared or claimed, no payment terms; the card claims x402 support
- payTo = agentWallet
- not an x402 seller
- Uptime
- answered 0 of last 2 checks
- agentWallet
- 0xafb0c4ef895d4895040cdc6435b96d3ee8350c6e
- Wallet used
- agentWallet: has sent at least one transaction
- Platform
- independent
- Registered
- 2026-11-01 12:05 UTC
- Last checked
- 2026-11-03 08:33 UTC, 2 checks
What the card declares
- web https://usebrainchain.com: answered (HTTP 200)
- x402 https://brain.usebrainchain.com/x402/tasks: no valid answer (HTTP 200)
- mcp https://www.npmjs.com/package/brainchain-mcp: no valid answer (HTTP 403)
- other:docs https://docs.usebrainchain.com/agents: answered (HTTP 200)
Recent changes
- 2026-11-03 08:33 UTC x402_claimed: none → true
- 2026-11-03 08:33 UTC class: broken card → site only
- 2026-11-03 08:33 UTC name: none → BrainChain
- 2026-11-03 08:33 UTC card_hash: none → 29e3182cb2a5c4de
- 2026-11-03 08:33 UTC card_ok: false → true
Token on Blockscout · JSON · text · Own page
What the card and its endpoints answered when read, not a verdict on the agent.
1 of 21,250 agents match · page 1 of 1
| Agent | Class | Card host | MCP | x402 | payTo = agentWallet | Wallet sent a tx | Platform | Check |
|---|---|---|---|---|---|---|---|---|
| Agent#20423 BrainChain | Classsite only | Card hostusebrainchain.com | MCPno | x402no | payTo = agentWallet- | Wallet sent a txyes | Platformindependent | Checkdetails |
Each id links to the agent's token on Blockscout. "-" means not declared, or not an x402 seller.
How we checked
We read the ERC-8004 identity registry on Robinhood Chain at block 100007973: for each of the 20,046 agent ids, its token URI, owner and agent wallet. Every read was read-only; nothing was signed, paid or sent.
- Each registration card was fetched once. Each endpoint a card declares was asked once: MCP with one
initializecall, x402 with one GET, websites with one GET. - An MCP server counts as answering when
initializereturns a valid result. An x402 endpoint counts when it answers HTTP 402 with payment terms (who is paid, in which asset). - BV-7X limits requests to 30 a minute. Every endpoint that answered HTTP 429 (rate limited) was asked again at that pace until it answered; none is still unread, so every row carries its final result.
- "Wallet sent a tx" is the transaction count of the agent wallet (else the owner). A wallet that is a smart contract can have done more than its count shows.
What each class means
- real service
- At least one MCP server or x402 endpoint answered.
- site only
- Only a website or other link answered.
- card only
- The card loads and parses, but nothing it declares answered (or it declares nothing).
- broken card
- The token URI is empty, not a link, could not be fetched, or is not JSON.
A broken card does not mean bad intent. A host can go offline, a project can move, or a card can be registered before it is published. Each row is what one read on 2026-10-28 returned, nothing more. Information only, not financial advice.