Infinihash Kyt MCP README

infinihash-kyt-mcp

MCP server for Infinihash KYT — real-time blockchain transaction monitoring, sanctions screening, and SAR generation as MCP tools.

Gives any MCP-compatible agent (Claude Desktop, Cursor, Cline, automation pipelines) access to:

kyt_screen_wallet — screen a wallet against OFAC SDN + 18.8K+ risk labels in under 200ms
kyt_lookup_intel — get known intel tags for an address (no full screen)
kyt_recent_screenings — what your org has been screening
kyt_create_case — open a compliance case from a risky screening
kyt_list_cases — list open / SAR-pending / closed cases
kyt_get_case — fetch one case with evidence notes
kyt_add_case_note — append investigation notes to the audit trail
kyt_generate_sar — render a FinCEN-aligned SAR draft
kyt_stats — coverage stats (per-source breakdown)
kyt_health — backend health probe

Hosted (no install)

Connect straight from Claude.ai, Claude Desktop, or any MCP client that supports remote servers:

URL: https://mcp.infinihash.com/mcp. Sign in with your KYT API key when prompted (OAuth).
No key yet? https://mcp.infinihash.com/free/mcp gives anonymous, basic sanctions screening.
Claude Code: claude mcp add --transport http infinihash-kyt https://mcp.infinihash.com/mcp

The hosted server adds preflight_payment: call it before an agent sends crypto. It returns ALLOW, REVIEW or BLOCK plus an Ed25519-signed receipt you can keep for examiners (verify_receipt checks it; public key at /.well-known/kyt-receipt-key).

Install (local, stdio)

bash

uvx infinihash-kyt-mcp

Or:

Terminal

pip install infinihash-kyt-mcp

Get an API key

Free tier — 100 screenings/month, no credit card required, key live in <60 seconds:

→ https://kyt.infinihash.com/kyt/settings/api-keys

Claude Desktop config

Add to ~/Library/Application Support/Claude/claude_desktop_config.json:

config.json

{
  "mcpServers": {
    "infinihash-kyt": {
      "command": "uvx",
      "args": ["infinihash-kyt-mcp"],
      "env": {
        "KYT_API_KEY": "kyt_your_key_here"
      }
    }
  }
}

Cursor / Cline

Same JSON, different file. See the docs.

Example prompts after install

Code

Screen wallet 0x722122dF12D4e14e13Ac3b6895a86e84145b6967 — is it sanctioned?

Open a case for the Tornado Cash address I just screened.

Generate a SAR draft for case <id> and email me a summary of what to include.

What labels do we have on 0x... — quick check, no full screen.

Why KYT over alternatives

Published pricing — no "contact sales" — Free $0, Starter $49/mo (500 screenings), Pro $199/mo (3,000 screenings)
Source transparency — every label tiered (T1 OFAC, T2 threat intel, T3 on-chain, T4 community) and source-attributed at /trust
Self-serve in minutes — API key in under a minute, no procurement cycle
Sub-200ms screens — fast-path cache returns sanctioned wallets in milliseconds

Compare honestly vs TRM Labs + Chainalysis Reactor Lite: https://kyt.infinihash.com/kyt/compare

Compliance note

KYT is a decision-support tool, not a SAR filing service. Your organisation remains solely responsible for SAR submissions via the BSA E-Filing System and for all regulatory determinations.