Who it is for
Onchain analysts and smart contract developers investigating addresses and transactions.
Multichain block explorer data: addresses, tokens, and contracts
Overview
Blockscout indexes blockchain data across many chains, and the connector exposes explorer reads over it: block metadata by height or timestamp, native transfers and internal calls for an address, ERC-20 transfers over a time range, token holdings with market data attached, NFTs grouped by collection, decoded transaction detail, and verified contract source and ABI. ENS names resolve to addresses and token symbols resolve to contract addresses. Chain selection is explicit, with a tool that returns supported chain IDs. Fifteen tools are listed and sixteen answered.
Onchain analysts and smart contract developers investigating addresses and transactions.
The surface is read-oriented explorer data with two escape hatches: `read_contract` runs view calls or simulates them through eth_call, and `direct_api_call` reaches raw Blockscout endpoints for chain-specific data. A session-priming `__unlock_blockchain_analysis__` tool accounts for the sixteenth entry against fifteen claimed.
Availability
Blockscout is listed in the Claude connectors directory only. Blockscout has no app under the same domain in the ChatGPT directory; 392 of the 3,150 products here are on both marketplaces, and this is not one of them.
The MCP server behind a Claude connector is usually the same server a ChatGPT app would need, so the absence is a distribution decision rather than a technical one.
Claude listing
Blockscout publishes 15 tools to Claude. That is a mid-sized surface: 59.4% of the 1,253 Claude-listed connectors expose fewer.
The median Claude-listed connector filed under Finance publishes 12, so this one runs 3 tools above its bucket's median and ranks 63rd of 159 by tool count.
It falls in the 11-20 tools band, which holds 22.5% of the Claude directory.
A direct call to the endpoint returned 16 tools, 1 more than the 15 the listing publishes. Probed 2026-08-07.
__unlock_blockchain_analysis__get_block_infoget_block_numberget_address_by_ens_nameget_transactions_by_addressget_token_transfers_by_addresslookup_token_by_symbolget_contract_abiinspect_contract_coderead_contractget_address_infoget_tokens_by_addressnft_tokens_by_addressget_transaction_infoget_chains_listdirect_api_callBlockscout publishes a remote MCP endpoint. Claude connects to it over HTTP; there is nothing to install locally.
Every connector in the Claude directory is remote, all 1,253 of them, so transport is not a differentiator there.
https://mcp.blockscout.com/mcp Blockscout carries partner verification in the Claude directory, which 474 of 1,253 listings do (37.8%). That is a review step past self-publishing, not an Anthropic-built server.
In the publisher's words
Provides access to multichain blockchain data such as balances, tokens, NFTs, contract metadata for contextual analysis.
Quoted from the connector's own Claude directory listing as captured in August 2026. Node8 did not write it and does not vouch for it.
Same company
On-chain lookups across EVM networks without API keys
ChatGPT
Nearby
Search and summarize files stored in Egnyte
Claude · ChatGPT
Read-only queries over Pemo cards, spend and reimbursements
Claude
Spend analysis and card admin through conversation
Claude · ChatGPT
Plain language questions across connected finance data
ChatGPT
Expert call transcripts and research from an AlphaSights account
Claude
Read-only access to Billit invoices, counterparties, and Peppol checks
Claude
This is an independent catalogue entry compiled by Node8 from Blockscout's public marketplace listing as it stood in August 2026. Listing facts come from the marketplaces; the comparisons against the rest of the directory and any live-endpoint measurements are Node8's. Node8 is not affiliated with Blockscout, and inclusion here is not an endorsement.
Node8 builds MCP servers end to end: deciding which tools are worth exposing, the authentication and permission model, the review submissions, and the onboarding that gets them used. One server serves ChatGPT, Claude, and Microsoft Copilot.