mcp server
BlockchainAnalysis
Is a wallet frozen by Tether/Circle? Free freeze checks + full history, screening & KYT. 9 chains.
Description as published by the maintainer. Source
- version 1.1.0
- active
active — Registry entry last updated 2026-07-18.
What this server can do
9 functions, named and described by the server itself. Parameter names are shown because they say more about what a function does than its name usually does.
check_stablecoin_freeze(chain, address)- Check whether Tether (USDT) or Circle (USDC) have blacklisted a wallet address on-chain. Reads the issuer's blacklist function directly across 15 chains (ETH, BSC, POLYGON, ARBITRUM, OPTIMISM, BASE, AVALANCHE, PLASMA, HYPEREVM, STABLE, INK, BERACHAIN, ROBINHOOD, TRON, SOL). A frozen address can no longer send or receive that stablecoin. Also reports whether the address was PREVIOUSLY frozen and later unfrozen (a prior-freeze signal from the freeze ledger). The result reports the observed on-chain fact (frozen / not frozen at check time), never the cause of a freeze. Free. Required: address, chain.
check_token_approvals(wallet)- List a wallet's active ERC-20 token approvals on Ethereum and who can move its funds — risk-scored against BA's 1B+ entity labels (scam / phishing / exploit / sanctioned spenders), flagging unlimited allowances and stale grants. The wallet's attack surface at a glance. Read-only. Ethereum only. Free. Required: wallet.
check_token_security(chain, token)- Simulate a buy-and-sell of an ERC-20 token on its main DEXes to surface honeypots (tokens you can buy but not sell), extreme transfer taxes, name/symbol impersonation, and active mint authority — cross-referenced against BA's 1B+ entity labels. Reports observed facts (e.g. 'sell simulation reverted'), not verdicts. Live on Base, BNB Chain, Ethereum, Optimism, Polygon, Arbitrum. No transaction is sent. Free. Required: token, chain.
get_freeze_events(kind, chain, limit, since, address)- Query the canonical stablecoin freeze ledger — the HISTORY of freeze / unfreeze / destroy events by Tether (USDT), Circle (USDC/EURC), Paxos (USDP) and First Digital (FDUSD), sourced from the issuers' own on-chain blacklist events across Ethereum, Polygon, Optimism, TRON and more. Filter by frozen address, chain, kind, or time; omit all filters for the most recent events. This is the EVENT HISTORY — to check whether an address is frozen right now, use check_stablecoin_freeze instead. Each row is a verifiable on-chain fact (issuer acted on address at block/time); it never states the cause. Free.
kyt_risk(chain, address)- Assess a wallet's KYT (Know-Your-Transaction) risk: combines real-time sanctions screening, BA entity classification, a VASP/jurisdiction risk score, and cluster context into a single risk verdict (critical / high / medium / low / unknown) with flags. Behavioral risk, distinct from a raw label list. Covers 54 chains. On 31 of them the verdict is backed by entity-label data; on the rest it is sanctions and stablecoin-freeze screening only, and the response says so. Paid per call via x402 (USDC). Required: address, chain.
kyt_tx(to, from, chain)- Assess the KYT risk of a transaction between two wallets: screens BOTH the sender (from) and recipient (to) against real-time sanctions, BA entity classification, a VASP/jurisdiction risk score and cluster context, then returns a single combined risk verdict (critical / high / medium / low / unknown), a block/review/allow recommendation, and directional flags (FROM:/TO:). The transaction analogue of kyt_risk. Covers 54 chains. On 31 of them the verdict is backed by entity-label data; on the rest it is sanctions and stablecoin-freeze screening only, and the response says so. Paid per call via x402 (USDC). Required: from, to, chain.
list_supported_chains- List the BlockchainAnalysis MCP tools, the chains each supports, and pricing. Call this first to discover what the server can do (and which calls are free vs paid) before invoking a tool. Free.
oracle_verdict(chain, address)- Get a consumer-protection verdict for a wallet or contract: a normalized verdict (e.g. safe / caution / high_risk) with a 0-100 score, confidence tier, and plain-language reasons, derived from BA sanctions + entity labels. Answers 'is it safe to interact with this address?' Distinct from raw labels (screen_address) and transactional risk (kyt_risk). Supported chains: btc, eth, bsc, polygon, arbitrum, optimism, base, avalanche, fantom, tron, sol. Paid per call via x402 (USDC). Required: address, chain.
screen_address(chain, address)- Screen a wallet against BlockchainAnalysis's 1B+ entity-label dataset: sanctions (OFAC / EU / UN / UK HMT / Swiss SECO), scam, phishing, exploit, mixer, exchange, and more — each label carries a threat level (SAFE→CRITICAL), source, and confidence. Returns the raw labels for the address. Works across major EVM chains plus TRON, SOL, and BTC. Paid per call via x402 (USDC). Required: address, chain.
Last successful function declaration observed on . Source: https://blockchainanalysis.io/api/mcp. We list what the server declared; we do not call any of these functions.
Endpoint status observed on . Source: https://blockchainanalysis.io/api/mcp.
Signals
These are separate measurements of different things. They are deliberately not combined into one score, because a popularity number that mixes website traffic with saves and stars cannot be checked or acted on.
| Signal | Value | What it measures | Window | Observed | Source |
|---|---|---|---|---|---|
| Latest published version | 1.1.0 | Latest version string the maintainer published to the registry. | as of fetch | Model Context Protocol | |
| Registry record last updated | 2026-07-18 | When the registry record was last updated by its maintainer. | point in time | Model Context Protocol | |
| First listed in the MCP Registry | 2026-07-18 | Date this server was first published to the official MCP Registry. Not a usage or quality measure. | point in time | Model Context Protocol | |
| mcp tools declared | 9 tools | Number of functions the server itself declared when asked to list them. This is what the server offers an agent, not a measure of how well any of them work. | as of probe | blockchainanalysis.io | |
| mcp endpoint status | ok | The server listed 9 functions when asked. | as of probe | blockchainanalysis.io |
Where to get it
This record as data
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