# Arkham MCP server > Look up blockchain entities, labels, balances, transfers, tokens and Polymarket data with Arkham's on-chain intelligence. - Listing: https://mcp.tc/i/arkham - Connect: use the server's own URL `https://mcp.arkm.com/mcp` (OAuth sign-in at the server); clients connect to it directly. The listing link is a page, not an MCP endpoint. - Type: remote (Streamable HTTP) - Auth: OAuth sign-in - Category: [Finance & Payments](https://mcp.tc/c/finance-payments) - Vendor: Arkham Intelligence - Homepage: - Repository: ## About Connects an assistant to Arkham's blockchain intelligence. It attributes on-chain activity to real-world entities across 16 chains, including Ethereum, Bitcoin, Solana, Tron and Base. Tools cover addresses, entities, tokens, transfers, swaps, risk scores, Polymarket, HyperCore (Hyperliquid), alerts, labels and private entities. The server is hosted by Arkham at https://mcp.arkm.com/mcp, so nothing is installed locally. Users sign in with their Arkham account through OAuth, or send an API key as a Bearer Authorization header. An Arkham API plan or trial is required, and tool calls use API credits. ## What it can do - Identify the entity behind a wallet address - Check address and entity balances, flows and history - Look up token prices, holders, flows and trending tokens - Review transfers, transactions and swaps - Get risk scores for addresses and entities - Explore Polymarket markets, positions and leaderboards - Manage your own alerts, labels and private entities ## Example prompts - "Who is behind this Ethereum wallet address?" - "Show the recent large transfers of USDC into Binance." - "What does this entity currently hold across chains?" - "Show the top Polymarket traders on the leaderboard." ## Install ### Claude Code 1. Run this in a terminal, in your project folder: ```bash claude mcp add --transport http arkham https://mcp.arkm.com/mcp ``` 2. Start Claude Code, type `/mcp`, pick **arkham** and choose **Authenticate**. A browser window opens for the Arkham Intelligence sign-in. Add `--scope user` to make it available in every project, not just this one. ### Claude Desktop 1. Open **Customize → Connectors**, click **+ Add**, then **Add custom connector**. 2. Name it **Arkham** and paste this URL: ```url https://mcp.arkm.com/mcp ``` 3. Click **Add**, then **Connect**, and sign in when Arkham Intelligence asks. Claude Desktop’s JSON config file only starts local servers. Remote servers go through Connectors, and connectors you add on claude.ai show up here too. ### claude.ai 1. Open the connector form on claude.ai. This button fills in the name and URL for you: [Add to claude.ai]() (opens connector settings) 2. Check that the URL reads `https://mcp.arkm.com/mcp` and click **Add**. 3. Click **Connect** and sign in when Arkham Intelligence asks. Free plans allow one custom connector. On Team and Enterprise plans an owner adds it under **Organization settings → Connectors**. ### ChatGPT 1. On chatgpt.com, go to **Plugins**, select **+**, then **Add custom MCP server**. 2. Enter a name for the server. 3. Under **Connection**, paste `https://mcp.arkm.com/mcp` as the server URL, then for authentication choose **OAuth**. ChatGPT sends you to Arkham Intelligence to sign in. 4. Check **I understand and want to continue**, then select **Create as a plugin**. Whether you can add a custom MCP server depends on your ChatGPT plan and your workspace permissions (in Business workspaces, admins and owners can). ### Cursor [Add to Cursor]() (opens Cursor) Or add it by hand to `~/.cursor/mcp.json` (all projects) or `.cursor/mcp.json` (this project): `mcp.json`: ```json { "mcpServers": { "arkham": { "url": "https://mcp.arkm.com/mcp" } } } ``` Cursor shows **Needs authentication** next to the server. Click the button beside it to sign in. ### VS Code [Install in VS Code]() (opens VS Code) Or from a terminal: ```bash code --add-mcp '{"name":"arkham","type":"http","url":"https://mcp.arkm.com/mcp"}' ``` Or commit it to the repo in `.vscode/mcp.json`: `.vscode/mcp.json`: ```json { "servers": { "arkham": { "type": "http", "url": "https://mcp.arkm.com/mcp" } } } ``` VS Code asks you to sign in the first time the server starts. ### Devin Desktop 1. Add it to `~/.config/devin/mcp_config.json` (macOS and Linux) or `%APPDATA%\devin\mcp_config.json` (Windows): `mcp_config.json`: ```json { "mcpServers": { "arkham": { "serverUrl": "https://mcp.arkm.com/mcp" } } } ``` 2. Refresh the MCP server list in Cascade and sign in when asked. Devin Desktop is the new name for Windsurf. It reads `serverUrl` (or `url`) for remote servers. ### Codex ```bash codex mcp add arkham --url https://mcp.arkm.com/mcp codex mcp login arkham ``` Or edit `~/.codex/config.toml` directly: `config.toml`: ```toml [mcp_servers.arkham] url = "https://mcp.arkm.com/mcp" ``` ### Gemini CLI ```bash gemini mcp add --transport http arkham https://mcp.arkm.com/mcp ``` Then, inside Gemini CLI, run `/mcp auth arkham` to sign in. This adds it to the current project. Add `-s user` to use it everywhere. ### Any client Most clients accept this shape. Some name the URL field differently: `serverUrl` in Devin Desktop, `httpUrl` in Gemini CLI’s settings file. ```json { "mcpServers": { "arkham": { "type": "http", "url": "https://mcp.arkm.com/mcp" } } } ``` Zed puts servers under `context_servers` in its settings. Cline needs `"type": "streamableHttp"`, or it assumes SSE. Client only starts local servers? Bridge it with `npx -y mcp-remote https://mcp.arkm.com/mcp`. ## Details - Server version: 1.0.1 - Last checked: 2026-11-15 (reachable, asks for credentials) - Listed: 2026-11-06 - Updated: 2026-11-06 --- Source: https://mcp.tc/i/arkham (mcp.tc is an independent directory, not affiliated with this server's publisher). Corrections: https://mcp.tc/report