Lets an agent pay for x402 APIs in USDC on Arc, under a spending policy it cannot change.
To add CRA AGENT to Claude, run the install command below or copy the ready-made config for Claude Code, Claude Desktop, Cursor and VS Code further down. Restart your client after adding it and its tools show up in your next conversation. It declares 5 environment variables, listed below.
Install
npx -y @cra-agent/mcp@0.0.11Environment variables
CRA_NETWORKSet in your MCP configCRA_KEY_FILESet in your MCP configCRA_POLICYSet in your MCP configCRA_RPC_URLSet in your MCP configDATABASE_URLSet in your MCP configSet only if the maker requires them; this listing does not flag any of them as required.
Install with your client
claude mcp add cra-agent --env CRA_NETWORK=<YOUR_CRA_NETWORK> --env CRA_KEY_FILE=<YOUR_CRA_KEY_FILE> --env CRA_POLICY=<YOUR_CRA_POLICY> --env CRA_RPC_URL=<YOUR_CRA_RPC_URL> --env DATABASE_URL=<YOUR_DATABASE_URL> -- npx -y @cra-agent/mcp@0.0.11
Run this in a terminal to add the server to Claude Code.
What this does
CRA AGENT exposes a set of tools to Claude over the Model Context Protocol. After you add it to claude_desktop_config.json (snippet above) and restart Claude Desktop, those tools become callable inside any conversation.
Requirements
This server declares the following environment variables. Set only the ones the maker requires for your setup; this listing does not flag any of them as required:
CRA_NETWORK CRA_KEY_FILE CRA_POLICY CRA_RPC_URL DATABASE_URL
Set these via the env object in your MCP config (see claude_desktop_config.json snippet above).
Frequently asked questions
How do I install CRA AGENT?
Run the Claude Code command in the install section to add CRA AGENT to Claude Code, or copy the ready-made config for your client from the install section on this page. Restart your client afterwards and the tools appear in your next conversation.
Which clients work with CRA AGENT?
This page carries setup and config for Claude Code, Claude Desktop, Cursor and VS Code. Any other MCP client that accepts a standard server config can connect to CRA AGENT as well.
Does CRA AGENT need an API key?
This listing does not flag an API key as required. The server can use these environment variables: CRA_NETWORK, CRA_KEY_FILE, CRA_POLICY, CRA_RPC_URL, DATABASE_URL; the maker's docs say which of them your setup needs. They go in the env block of your MCP config.
Imported from the Official MCP Registry. The details above come from the registry entry; the maker can claim this listing to correct them, add docs, and see its traffic.
Is this your MCP server?
Claim this listing to see its traffic, fix details yourself, and skip the review queue on future updates.
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