Data tools and an MCP marketplace AI agents pay for per call in USDC over x402 - no account, no API key. 49 MCP tools (npx fiatdock-mcp), ElizaOS and GOAT plugins, a Python/LangChain client, and a non-custodial USDC-bank ramp.
Setup
Choose your client, copy the config, then fill in any required environment variables.
Local
claude mcp add fiatdock --env AGENT_PRIVATE_KEY='<AGENT_PRIVATE_KEY>' -- npx -y fiatdock-mcp~/.codex/config.toml
[mcp_servers.fiatdock]
command = "npx"
args = ["-y", "fiatdock-mcp"]
env = { AGENT_PRIVATE_KEY = "<AGENT_PRIVATE_KEY>" }
# codex mcp add fiatdock --env AGENT_PRIVATE_KEY='<AGENT_PRIVATE_KEY>' -- npx -y fiatdock-mcp~/.cursor/mcp.json
{
"mcpServers": {
"fiatdock": {
"command": "npx",
"args": [
"-y",
"fiatdock-mcp"
],
"env": {
"AGENT_PRIVATE_KEY": "<AGENT_PRIVATE_KEY>"
}
}
}
}.vscode/mcp.json
{
"servers": {
"fiatdock": {
"type": "stdio",
"command": "npx",
"args": [
"-y",
"fiatdock-mcp"
],
"env": {
"AGENT_PRIVATE_KEY": "<AGENT_PRIVATE_KEY>"
}
}
}
}~/.gemini/settings.json
{
"mcpServers": {
"fiatdock": {
"command": "npx",
"args": [
"-y",
"fiatdock-mcp"
],
"env": {
"AGENT_PRIVATE_KEY": "<AGENT_PRIVATE_KEY>"
}
}
}
}claude_desktop_config.json
{
"mcpServers": {
"fiatdock": {
"command": "npx",
"args": [
"-y",
"fiatdock-mcp"
],
"env": {
"AGENT_PRIVATE_KEY": "<AGENT_PRIVATE_KEY>"
}
}
}
}.trae/mcp.json
{
"mcpServers": {
"fiatdock": {
"command": "npx",
"args": [
"-y",
"fiatdock-mcp"
],
"env": {
"AGENT_PRIVATE_KEY": "<AGENT_PRIVATE_KEY>"
}
}
}
}Remote
claude mcp add --transport http fiatdock https://fiatdock.com/mcp~/.codex/config.toml
[mcp_servers.fiatdock]
url = "https://fiatdock.com/mcp"
# codex mcp add fiatdock --url https://fiatdock.com/mcp~/.cursor/mcp.json
{
"mcpServers": {
"fiatdock": {
"url": "https://fiatdock.com/mcp"
}
}
}.vscode/mcp.json
{
"servers": {
"fiatdock": {
"type": "http",
"url": "https://fiatdock.com/mcp"
}
}
}~/.gemini/settings.json
{
"mcpServers": {
"fiatdock": {
"httpUrl": "https://fiatdock.com/mcp"
}
}
}claude_desktop_config.json · Customize › Connectors › Add custom connector
{
"mcpServers": {
"fiatdock": {
"command": "npx",
"args": [
"-y",
"mcp-remote",
"https://fiatdock.com/mcp"
]
}
}
}.trae/mcp.json
{
"mcpServers": {
"fiatdock": {
"url": "https://fiatdock.com/mcp"
}
}
}Environment variables
AGENT_PRIVATE_KEY
Replace the placeholders with your own credentials and keep them out of version control.