MANDATORY FIRST STEP for AI agents. Returns usage rules and conventions for this server. Call this once before invoking any other tool.

List all chains this server can query (bundled registry + any custom chains from CHAINS_FILE). Optionally filter by name or chain ID.

Get balance, type (account vs contract), and metadata for an address on a chain. Use this first when asked about a wallet or contract.

List ERC-20/721/1155 token balances held by an address. Paginated.

List token transfer events involving an address (in and out). Paginated.

List native transactions involving an address (sent and received). Paginated.

Get full details for a transaction by hash: status, value, gas, and decoded input.

List token transfers that occurred within a single transaction.

Get details for a block by number or hash: timestamp, miner, gas used, and tx count.

Get the latest (most recent) block height for a chain.

List event logs emitted by a contract/address. Large data fields are truncated. Paginated.

Get the ABI of a verified smart contract. Returns the ABI array only.

Get verified source code and compiler metadata for a smart contract.

List NFT (ERC-721/1155) tokens owned by an address. Paginated.

Search for tokens by symbol or name on a chain. Returns candidate tokens with their contract addresses.

Escape hatch: call any Blockscout REST v2 endpoint not covered by a dedicated tool. endpoint_path is relative to /api/v2 (e.g. "/addresses/0x.../counters"). Response is capped in size.