Blockscout

Blockscout MCP

On-chain data queries via Blockscout MCP server (already configured). 16 tools across address intelligence, transactions, contracts, and blocks.

Chain support

EVM-only. Blockscout covers 90+ EVM chains. Not available for native Solana or Tron -- use CoinGecko contract endpoints for token data on those chains.

Solana via Neon EVM: Chain 245022934 covers the Neon EVM layer on Solana (EVM-compatible contracts deployed on Solana).

Common chain IDs

| Chain | ID | Chain | ID | | ----------------- | --------- | ------------ | ------ | | Ethereum | 1 | Arbitrum One | 42161 | | Polygon | 137 | OP Mainnet | 10 | | Base | 8453 | zkSync Era | 324 | | Gnosis | 100 | Scroll | 534352 | | Celo | 42220 | Mode | 34443 | | Neon EVM (Solana) | 245022934 | Filecoin | 314 | | Robinhood Chain | 4663 | | |

Robinhood Chain (4663) is an Arbitrum Orbit L3 (native currency ETH), reachable by chain_id like any other -- no instance URL needed.

Default: Ethereum (1). Use get_chains_list to discover all 90+ supported chains.

Discover a chain ID

For any chain not in the table -- Orbit L3s, new rollups, or chains with their own Blockscout instance (e.g. robinhoodchain.blockscout.com) -- pass a name substring to get_chains_list instead of assuming it is unsupported:

get_chains_list(query="robinhood")
  -> { name: "Robinhood Chain", chain_id: "4663", ecosystem: "Arbitrum Orbit" }

If a chain has a Blockscout explorer, it is almost certainly reachable through the MCP by chain_id -- you do not need the instance URL.

Reference

| File | Topic | | ---------------------------------------- | -------------------------------------------- | | [tools-reference.md](tools-reference.md) | All 16 tools grouped by category | | [usage-patterns.md](usage-patterns.md) | Common workflows, pagination, error handling |

What You Get

• Reference documentation for all 16 Blockscout MCP tools covering address intelligence, transactions, contracts, and block data.
• Chain ID lookup tables and common usage patterns for querying on-chain state across 90+ EVM chains.
• Pagination handling, error recovery, and time-based query guidance for efficient data retrieval.

See also

• coingecko -- market prices, volumes, DEX pools, trending tokens
• sentinel -- automated contract monitoring with alert rules
• ethskills -- framework selection, RPC providers, EIP/ERC standards
• solidity-auditor -- smart contract security patterns and audit methodology

Source & license

This open-source skill is cataloged on AgentStack and links to its original source — we do not rehost the code.

• Author: DROOdotFOO
• Source: DROOdotFOO/agent-skills
• License: MIT
• Homepage: https://droo.foo/

Install and usage instructions live in the source repository linked above.