About Alchemy MCP Server
Alchemy’s hosted MCP server gives AI agents access to blockchain APIs and onchain data. It uses OAuth sign-in and requires neither a local installation nor an API key.
Key features
- 01Access Alchemy blockchain APIs
- 02Query onchain data
- 03Authenticate with OAuth
- 04Connect over Streamable HTTP
Use cases
- 01Let an AI agent query blockchain data
- 02Call Alchemy APIs from an MCP-compatible client
MCP support
As an MCP server, it provides MCP clients with access to Alchemy blockchain APIs and onchain data through a hosted endpoint. It uses Streamable HTTP transport and OAuth authentication.
Configuration
Remote servers need no local install. Pick your client, then copy the config or install in one click.
https://mcp.alchemy.com/mcpclaude mcp add --transport http alchemy https://mcp.alchemy.com/mcp{"mcpServers":{"alchemy":{"type":"http","url":"https://mcp.alchemy.com/mcp"}}}Open in Cursor{"servers":{"alchemy":{"type":"http","url":"https://mcp.alchemy.com/mcp"}}}Open in VS Code{"mcpServers":{"alchemy":{"type":"http","url":"https://mcp.alchemy.com/mcp"}}}{"mcpServers":{"alchemy":{"serverUrl":"https://mcp.alchemy.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.
Tools
97This tool takes no parameters.
Details
From the project READMEAlchemy MCP Server
Important
The legacy local MCP server has been retired. Its source code has been removed from this repository, and the
@alchemy/mcp-servernpm package will stop working on September 30, 2026. Use the hosted Alchemy MCP Server athttps://mcp.alchemy.com/mcpinstead.
The hosted Alchemy MCP Server gives AI agents access to Alchemy's blockchain APIs and onchain data. It authenticates via OAuth — just sign in with your Alchemy account when prompted. No API key or local install required.
Full documentation: alchemy.com/docs/alchemy-mcp-server
Setup
| Client | Setup |
|---|---|
| Claude Code | claude mcp add alchemy --transport http https://mcp.alchemy.com/mcp |
| Codex | codex mcp add alchemy --url https://mcp.alchemy.com/mcp |
| Cursor | Add to ~/.cursor/mcp.json or .cursor/mcp.json — see JSON config below |
| Windsurf | Add to ~/.codeium/windsurf/mcp_config.json — see JSON config below |
| VS Code Copilot | Add to .vscode/mcp.json — see JSON config below |
| Claude Desktop | Add to claude_desktop_config.json — see JSON config below |
| Cline | Open Cline: MCP Servers from the VS Code command palette — see JSON config below |
JSON config for Cursor / Windsurf / Claude Desktop / Cline
{
"mcpServers": {
"alchemy": {
"type": "streamable-http",
"url": "https://mcp.alchemy.com/mcp"
}
}
}
JSON config for VS Code Copilot
{
"servers": {
"alchemy": {
"type": "http",
"url": "https://mcp.alchemy.com/mcp"
}
}
}
For any other MCP-compatible client, point it at https://mcp.alchemy.com/mcp using Streamable HTTP transport.
Migrating from the local server
If your MCP config runs the local server through npx, like this:
{
"mcpServers": {
"alchemy": {
"command": "npx",
"args": ["-y", "@alchemy/mcp-server"],
"env": {
"ALCHEMY_API_KEY": "YOUR_API_KEY"
}
}
}
}
replace that entry with the hosted server config for your client from the Setup section above. You can drop ALCHEMY_API_KEY from your MCP config; the hosted server signs you in with your Alchemy account instead.
Comments
New to MCP?
From what the protocol is to installing your first server, these answers cover most first questions.
An open protocol that defines how AI applications connect to external tools and data in a uniform way. Clients talk to the model; MCP servers provide tools, resources and prompt templates. They exchange standard messages, so one server can be reused by many clients.