About Arkham
Arkham is a hosted MCP server for blockchain intelligence, intended for researchers and others investigating addresses, entities, tokens, transfers, and Polymarket activity. Its tools span multiple areas of on-chain data; they primarily read data, with write access limited to the user's own alerts, labels, and private entities.
Key features
- 01Inspect on-chain intelligence for addresses and entities
- 02Review balances, flows, and transaction history
- 03Look up token prices, holders, and trends
- 04Query Polymarket markets and positions
- 05Inspect HyperCore balances and trades
- 06Manage alerts, labels, and private entities
Use cases
- 01Investigate entities associated with a wallet
- 02Track transfers and balances for an address or entity
- 03Analyze token holders and fund flows
- 04Review Polymarket markets and wallet activity
MCP support
Arkham hosts an MCP server at https://mcp.arkm.com/mcp, exposing blockchain intelligence tools to clients. Connection uses Arkham account authorization or an API key; tool calls consume the same credits as the REST API.
Configuration
Remote servers need no local install. Pick your client, then copy the config or install in one click.
https://mcp.arkm.com/mcpclaude mcp add --transport http com-arkm https://mcp.arkm.com/mcp{"mcpServers":{"com-arkm":{"type":"http","url":"https://mcp.arkm.com/mcp"}}}Open in Cursor{"servers":{"com-arkm":{"type":"http","url":"https://mcp.arkm.com/mcp"}}}Open in VS Code{"mcpServers":{"com-arkm":{"type":"http","url":"https://mcp.arkm.com/mcp"}}}{"mcpServers":{"com-arkm":{"serverUrl":"https://mcp.arkm.com/mcp"}}}Run commands in a terminal; paste JSON into the client’s MCP config and restart. Servers that need sign-in will prompt on first connect.
https://mcp.arkm.com/mcphttps://mcp.arkm.com/Auth requiredTools
Details
From the project README
Arkham MCP server
Arkham's official MCP server connects Claude, ChatGPT, Cursor, VS Code, Gemini CLI and other MCP clients to Arkham's blockchain intelligence. Arkham hosts it at https://mcp.arkm.com/mcp, so there is nothing to install or run. This repository holds only the manifests that MCP directories and client plugin galleries read; the server itself isn't open source.
Ask who is behind any wallet, how money moved, and what an entity holds. Arkham attributes on-chain activity to real-world entities (exchanges, funds, market makers, individuals) across 16 chains, including Ethereum, Bitcoin, Solana, Tron and Base. The server's 142 tools cover:
| Area | Tools |
|---|---|
| Polymarket: markets, positions, wallets, leaderboards | 22 |
| Tokens: prices, holders, flows, trending | 21 |
| Addresses: intelligence, balances, flows, history | 19 |
| HyperCore (Hyperliquid): positions, balances, trades | 16 |
| Entities: intelligence, balances, flows, history | 15 |
| Alerts, labels and private entities (your own) | 15 |
| Live transfer streams (WebSocket setup) | 11 |
| Transfers, transactions, swaps and networks | 9 |
| Intelligence update feeds and tags | 6 |
| Risk scores for addresses and entities | 5 |
| Account usage and billing | 3 |
Connect
You sign in with your Arkham account: the client opens Arkham, you create a key for it (or pick the one you made last time), and the client keeps it working. The full setup guide, including troubleshooting, is the MCP Server guide.
| Client | How |
|---|---|
| Claude (desktop, web, mobile) | Customize → Connectors → Add custom connector, URL https://mcp.arkm.com/mcp. Under Advanced settings, set the OAuth Client ID to claude. |
| Claude Code | /plugin marketplace add arkhamintelligence/arkham-mcp, then /plugin install arkham@arkham. Or: claude mcp add --transport http arkham https://mcp.arkm.com/mcp --client-id claude-code --callback-port 8765 --scope user |
| Cursor | Add to Cursor, or add the arkham entry from mcp.json to ~/.cursor/mcp.json. |
| Codex | codex mcp add arkham --url https://mcp.arkm.com/mcp, then codex mcp login arkham |
| Gemini CLI | gemini extensions install https://github.com/arkhamintelligence/arkham-mcp |
| Kiro | Powers → Add Custom Power → Import power from GitHub, https://github.com/arkhamintelligence/arkham-mcp/tree/main/kiro |
| VS Code, ChatGPT and others | Add a remote MCP server with the URL https://mcp.arkm.com/mcp. The client registers itself, so Arkham's sign-in page shows its name as an unverified app. |
Use an API key instead of signing in
Any client that can send a header can use a key from the API Dashboard:
Authorization: Bearer YOUR_API_KEY
Access and credits
Using the server needs an Arkham API plan or trial (Getting Access). Tool calls use the same API credits as the REST API, and each tool's description states its price; most lookups cost 5 credits or fewer. Each answer is capped at 4 MiB, so ask for narrow time ranges or fewer results, and use the API for large exports.
The tools read data, and write only to your own alerts, labels and private entities. None of them move funds or place trades. The server forwards each tool call's arguments and your key to api.arkm.com and keeps no conversation content.
What's in this repository
| Path | For |
|---|---|
server.json | Official MCP Registry entry com.arkm/mcp |
.claude-plugin/, .mcp.json | Claude Code plugin and marketplace |
.cursor-plugin/, mcp.json | Cursor plugin |
gemini-extension.json, GEMINI.md | Gemini CLI extension |
kiro/ | Kiro power |
assets/ | Square icons (dark and light) at 400, 512 and 1024 px, with SVG sources |
Every manifest carries the same version; bump them together on a release and tag it.
Listings
- Official MCP Registry:
com.arkm/mcp - Glama: Arkham connector
Support
- API and MCP: [email protected]
- Terms: API terms of service · Privacy policy
Comments
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