chainanalyzer-mcp

MCP Server for ChainAnalyzer — multi-chain blockchain AML risk analysis for AI agents.

Scan any address across 12 chains, all live for self-serve — Bitcoin, Ethereum, Polygon, BNB Smart Chain, Base, Arbitrum, Optimism, Avalanche, Solana, Kaia, TRON, and XRP. 76+ detection rules, ML anomaly scoring, and Neo4j graph analysis.

Tools

| Tool | Description | Price | |------|-------------|-------| | check_address_risk | AML risk score for any blockchain address | $1.00 | | sanctions_check | OFAC / FATF / JFSA sanctions screening | $0.50 | | hack_exposure_lookup | Is this address connected to a known hack (e.g. Binance 2026)? Verdict, hop distance from the attacker, role and lower-bound amounts per incident (EVM, TRON, Solana, Bitcoin) | $0.50 | | freeze_status | Is this address frozen / blacklisted by a stablecoin issuer (USDT, USDC, JPYC ...)? Current state per token with timestamps | $0.10 | | hack_exposure_batch | Known-hack exposure for up to 50 addresses in one call (deposit-list screening) | $5.00 | | trace_transaction | Transaction flow tracing with ML anomaly detection | $3.00 | | detect_coinjoin | CoinJoin / mixing pattern detection (Bitcoin) | $1.00 | | cluster_wallet | Wallet clustering via Neo4j graph analysis | $2.50 | | batch_screening | Batch AML screening (up to 50 addresses) | $5.00 | | bridge_flow_trace | Multi-hop cross-chain forensic trace with Solver detection + same-intent correlation (NEAR Intents / Wormhole / Stargate / Across / Synapse / Hop / deBridge) | $3.00 |

Agent framework examples

Ready-to-use tools for LangChain, OpenAI Agents SDK, Vercel AI SDK and ElizaOS (pay per call over x402 or with an API key): examples/.

Quick Start

Claude Desktop / Claude Code

Add to your MCP configuration:

{
  "mcpServers": {
    "chainanalyzer-aml": {
      "command": "npx",
      "args": ["-y", "chainanalyzer-mcp"],
      "env": {
        "CHAINANALYZER_API_KEY": "tfk_your_api_key"
      }
    }
  }
}

From Source

git clone https://github.com/rascal-3/chainanalyzer-mcp.git
cd chainanalyzer-mcp
npm install
npm start

Agent Skill & Claude Code Plugin

The repo ships an Agent Skill that tells the agent when to use these tools, how to pick the chain from the address format, which tool to call first, and how to report results. It works with any agent that reads SKILL.md (Claude Code, Cursor, Codex CLI, Gemini CLI, OpenClaw, ...).

Claude Code (plugin: MCP server + skill in one step)

/plugin marketplace add rascal-3/chainanalyzer-mcp
/plugin install chainanalyzer-aml@chainanalyzer

Set CHAINANALYZER_API_KEY in your shell environment (or X402_PRIVATE_KEY for pay-per-request). The plugin's .mcp.json reads it from there.

Any other agent

Copy skills/chainanalyzer-aml/ into your agent's skills directory and configure the MCP server as shown in Quick Start.

MCP Registry

Listed in the official MCP Registry as io.github.rascal-3/chainanalyzer-mcp.

Authentication

Choose one of three modes:

1. API Key (all plans, including Free)

Create a tfk_ API key at chain-analyzer.com → Account → Settings → API Keys. Every plan can issue keys; the Free plan includes 10 scans/month, enough to try sanctions, risk, trace, CoinJoin and cluster before paying. batch_screening needs Starter or above and bridge_flow_trace needs Business or above in API-key mode (x402 mode has no plan gates). Rate limits by plan: Free 10/min, Starter 30/min, Pro 60/min, Business 120/min, Enterprise 300/min.

{
  "env": {
    "CHAINANALYZER_API_KEY": "tfk_your_api_key"
  }
}

2. x402 USDC Payment (Pay-Per-Request)

No account needed. Pay with USDC on Base or Solana per request.

{
  "env": {
    "X402_PRIVATE_KEY": "your_wallet_private_key",
    "X402_NETWORK": "base"
  }
}

Requires the x402 npm package: npm install x402

3. Dev Mode

No authentication. Works when the ChainAnalyzer server has X402_ENABLED=false.

{
  "env": {
    "CHAINANALYZER_BASE_URL": "http://localhost:3000"
  }
}

Environment Variables

| Variable | Description | Required | |----------|-------------|----------| | CHAINANALYZER_API_KEY | tfk_ API key (any plan, Free included) | One of API key or x402 | | X402_PRIVATE_KEY | Wallet private key for USDC payments | One of API key or x402 | | X402_NETWORK | Payment network: base or solana (default: base) | No | | CHAINANALYZER_BASE_URL | API base URL (default: https://chain-analyzer.com) | No |

Example Usage

Once configured, ask your AI agent:

"Check if this Ethereum address is sanctioned: 0x1234..."

"Analyze the risk score for this Solana wallet: ABC123..."

"Trace the fund flow of this Bitcoin transaction and check for mixing patterns"

"Screen these 20 addresses for AML compliance"

The agent will automatically call the appropriate ChainAnalyzer tools.

Supported Chains

All 12 chains are live for self-serve plans.

| Chain | Highlights | |-------|------------| | Bitcoin | OFAC screening, dust attacks, peel chains, CoinJoin detection | | Ethereum | 18+ detectors, Neo4j graph analysis, sanctions, mixers | | Polygon / BNB Smart Chain / Base / Arbitrum / Optimism / Avalanche / Kaia | Full EVM AML suite, bridge tracing | | Solana | Token security (rug pull, honeypot), wallet drainer detection, bridge tracing | | TRON | USDT flow screening, sanctions (independent scanner) | | XRP | Exchange / issuer labels, sanctions (independent scanner) |

bridge_flow_trace supports EVM chains, Solana and Kaia. detect_coinjoin is Bitcoin only.

Links

• ChainAnalyzer — Web platform
• Using ChainAnalyzer from AI agents — skill, plugin and MCP setup guide
• API reference
• x402 Protocol — Pay-per-request standard

License

MIT - see LICENSE

Built by refinancier, inc.