Verifiable VRF draws on Arc, 0.05 USDC each. On Robinhood Chain, integrate on chain with the SDK.
To add D20DAO Verifiable Randomness 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 6 environment variables, listed below.
Install
npx -y @d20dao/mcp@0.1.2Environment variables
D20_DAILY_LIMIT_USDCSet in your MCP configD20_NETWORKSet in your MCP configD20_PAY_CHAINSet in your MCP configD20_WALLET_ADDRESSSet in your MCP configD20_CIRCLE_CLISet in your MCP configD20_MCP_HOMESet 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 d20dao-verifiable-randomness --env D20_DAILY_LIMIT_USDC=<YOUR_D20_DAILY_LIMIT_USDC> --env D20_NETWORK=<YOUR_D20_NETWORK> --env D20_PAY_CHAIN=<YOUR_D20_PAY_CHAIN> --env D20_WALLET_ADDRESS=<YOUR_D20_WALLET_ADDRESS> --env D20_CIRCLE_CLI=<YOUR_D20_CIRCLE_CLI> --env D20_MCP_HOME=<YOUR_D20_MCP_HOME> -- npx -y @d20dao/mcp@0.1.2
Run this in a terminal to add the server to Claude Code.
What this does
D20DAO Verifiable Randomness 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:
D20_DAILY_LIMIT_USDC D20_NETWORK D20_PAY_CHAIN D20_WALLET_ADDRESS D20_CIRCLE_CLI D20_MCP_HOME
Set these via the env object in your MCP config (see claude_desktop_config.json snippet above).
Frequently asked questions
How do I install D20DAO Verifiable Randomness?
Run the Claude Code command in the install section to add D20DAO Verifiable Randomness 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 D20DAO Verifiable Randomness?
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 D20DAO Verifiable Randomness as well.
Does D20DAO Verifiable Randomness need an API key?
This listing does not flag an API key as required. The server can use these environment variables: D20_DAILY_LIMIT_USDC, D20_NETWORK, D20_PAY_CHAIN, D20_WALLET_ADDRESS, D20_CIRCLE_CLI, D20_MCP_HOME; 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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