Hosted server that lets AI agents use Alchemy's blockchain APIs and onchain data, with OAuth sign-in through an Alchemy account.
Setup
Choose your client, copy the config, then fill in any required environment variables.
Local
claude mcp add alchemy --env ALCHEMY_API_KEY='<ALCHEMY_API_KEY>' -- npx -y @alchemy/mcp-server~/.codex/config.toml
[mcp_servers.alchemy]
command = "npx"
args = ["-y", "@alchemy/mcp-server"]
env = { ALCHEMY_API_KEY = "<ALCHEMY_API_KEY>" }
# codex mcp add alchemy --env ALCHEMY_API_KEY='<ALCHEMY_API_KEY>' -- npx -y @alchemy/mcp-server~/.cursor/mcp.json
{
"mcpServers": {
"alchemy": {
"command": "npx",
"args": [
"-y",
"@alchemy/mcp-server"
],
"env": {
"ALCHEMY_API_KEY": "<ALCHEMY_API_KEY>"
}
}
}
}.vscode/mcp.json
{
"servers": {
"alchemy": {
"type": "stdio",
"command": "npx",
"args": [
"-y",
"@alchemy/mcp-server"
],
"env": {
"ALCHEMY_API_KEY": "<ALCHEMY_API_KEY>"
}
}
}
}~/.gemini/settings.json
{
"mcpServers": {
"alchemy": {
"command": "npx",
"args": [
"-y",
"@alchemy/mcp-server"
],
"env": {
"ALCHEMY_API_KEY": "<ALCHEMY_API_KEY>"
}
}
}
}claude_desktop_config.json
{
"mcpServers": {
"alchemy": {
"command": "npx",
"args": [
"-y",
"@alchemy/mcp-server"
],
"env": {
"ALCHEMY_API_KEY": "<ALCHEMY_API_KEY>"
}
}
}
}.trae/mcp.json
{
"mcpServers": {
"alchemy": {
"command": "npx",
"args": [
"-y",
"@alchemy/mcp-server"
],
"env": {
"ALCHEMY_API_KEY": "<ALCHEMY_API_KEY>"
}
}
}
}Remote
claude mcp add --transport http alchemy https://mcp.alchemy.com/mcp~/.codex/config.toml
[mcp_servers.alchemy]
url = "https://mcp.alchemy.com/mcp"
# codex mcp add alchemy --url https://mcp.alchemy.com/mcp~/.cursor/mcp.json
{
"mcpServers": {
"alchemy": {
"url": "https://mcp.alchemy.com/mcp"
}
}
}.vscode/mcp.json
{
"servers": {
"alchemy": {
"type": "http",
"url": "https://mcp.alchemy.com/mcp"
}
}
}~/.gemini/settings.json
{
"mcpServers": {
"alchemy": {
"httpUrl": "https://mcp.alchemy.com/mcp"
}
}
}claude_desktop_config.json · Customize › Connectors › Add custom connector
{
"mcpServers": {
"alchemy": {
"command": "npx",
"args": [
"-y",
"mcp-remote",
"https://mcp.alchemy.com/mcp"
]
}
}
}.trae/mcp.json
{
"mcpServers": {
"alchemy": {
"url": "https://mcp.alchemy.com/mcp"
}
}
}Environment variables
ALCHEMY_API_KEY
Replace the placeholders with your own credentials and keep them out of version control.