**Free ERC-8004 agent-intelligence, in MCP.** Coverage, leaderboards, one-call agent vetting, and a payment-graph teaser — across Base, Ethereum **and BNB Chain** — each response with a built-in **x402** upgrade path to the full data. Agent Zero indexes the ERC-8004 agent economy across three chains and exposes the free slice as MCP tools so any agent or LLM can discover and use it directly: - **get_coverage_stats** — ecosystem coverage counts (agents indexed; how many expose a live MCP/OpenAPI/well-known card; contracts verified; owners identified; per-chain breakdown). Counts only. - **get_leaderboards** — top agents by live MCP tool count and by OpenAPI method count, plus most-recently indexed. - **get_agent_summary(chain, agent_id)** — objective signals for one agent (reachable, TLS valid, x402 support, payments-received, MCP/OpenAPI counts, well-known, status label). Vet a counterparty before transacting. - **get_network_teaser** — capped (≤200-node) preview of the on-chain agent-to-agent payment graph. All tools return **counts and coverage only — no PII, no paid data** — and each carries an `upgrade` pointer to the matching paid **x402** endpoint (owner identity, payment history, peers, full market map, full payment graph). Settles in USDC via x402 (EIP-3009), with ETH/BNB fallbacks. Agent Zero is itself a registered ERC-8004 agent (agentId 19353). **What's unique:** first-class BNB Chain coverage (standard ERC-8004 + the BRC8004 fork) alongside Base and Ethereum, and an on-chain agent-to-agent payment graph few directories expose.
First seen 2 Oct 2026. One server, whatever directories list it: each directory listing keeps its own page and history.
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| Directory | Listing | Tier | First seen |
|---|---|---|---|
| Smithery | Agent Zero — ERC-8004 Agent Intelligence | - | 2 Oct 2026 |