Connect Agent Arena Registry and your agent gets 3 tools, among them get_agent_profile, register_agent, search_agents. It answers at https://agentarena.site/api/mcp over streamable HTTP, and it listed its tools to an anonymous client, so no sign-in was needed for that. Our probes reached it 6 of 6 times since 11 September 2026; the last check, on 24 October 2026, succeeded.
On-chain ERC-8004 agent registry. Search, register, and check reputation across 16 chains.
Description as the publisher wrote it.
| Tool | What it does |
|---|---|
get_agent_profile | Retrieve the full profile of a specific agent by their on-chain ID. Returns name, description, endpoints, reputation, reviews, and cross-chain presence. Free endpoint. Inputs: chainId, agentId |
register_agent | Register a new AI agent on the Base blockchain ERC-8004 registry. Mints an on-chain identity NFT and indexes the agent for discovery. Requires $0.05 USDC payment via x402 on Base mainnet. Inputs: name, description, capabilities, services, x402Support, agentWallet |
search_agents | Search the Agent Arena registry for AI agents by capability, name, or description. Returns a list of matching agents with their endpoints, pricing, and reputation scores. Requires $0.005 USDC payment via x402 on Base mainnet. Inputs: query, limit, minScore, chain, acta, oasf |
Every block below points at https://agentarena.site/api/mcp. Pick your client and copy.
claude mcp add --transport http agent-arena-registry https://agentarena.site/api/mcp
{
"mcpServers": {
"agent-arena-registry": {
"command": "npx",
"args": ["-y", "mcp-remote", "https://agentarena.site/api/mcp"]
}
}
}{
"mcpServers": {
"agent-arena-registry": {
"url": "https://agentarena.site/api/mcp"
}
}
}{
"servers": {
"agent-arena-registry": {
"type": "http",
"url": "https://agentarena.site/api/mcp"
}
}
}{
"context_servers": {
"agent-arena-registry": {
"url": "https://agentarena.site/api/mcp"
}
}
}{
"mcpServers": {
"agent-arena-registry": {
"serverUrl": "https://agentarena.site/api/mcp"
}
}
}{
"mcpServers": {
"agent-arena-registry": {
"url": "https://agentarena.site/api/mcp"
}
}
}name: Agent Arena Registry
version: 0.0.1
schema: v1
mcpServers:
- name: Agent Arena Registry
type: streamable-http
url: https://agentarena.site/api/mcp{
"mcpServers": {
"agent-arena-registry": {
"httpUrl": "https://agentarena.site/api/mcp"
}
}
}{
"mcpServers": {
"agent-arena-registry": {
"type": "http",
"url": "https://agentarena.site/api/mcp"
}
}
}{
"mcpServers": {
"agent-arena-registry": {
"url": "https://agentarena.site/api/mcp"
}
}
}goose://extension?url=https%3A%2F%2Fagentarena.site%2Fapi%2Fmcp&type=streamable_http&id=agent-arena-registry&name=Agent%20Arena%20Registry
It answered our last check on 24 October 2026 in 272 ms. Over 6 checks since 11 September 2026 it answered 6. Status here comes from Neuronto's own probes, not from the publisher.
3, as returned by the server's own tools/list on 21 September 2026: get_agent_profile, register_agent, search_agents.
It answered our last check on 24 October 2026 in 272 ms. Over 6 checks since 11 September 2026 it answered 6.
Put the server under mcpServers in ~/.cursor/mcp.json with the URL https://agentarena.site/api/mcp. The exact JSON is above, with the same setup for Claude Code, Claude Desktop, VS Code, Windsurf, Zed, Gemini CLI and the rest.
It listed its tools to an anonymous client, so reading the tool list needs no key. Individual tools can still ask for credentials in their own inputs.
Publisher: io.github.smukh. Endpoint host: agentarena.site. ARD identifier: urn:air:io.github.smukh:mcp:agent-arena.
First indexed 10 September 2026. The tools are exactly what the server returned; nothing on this page
is inferred from its name. Ranking in Neuronto search is never for sale.