Put an AI agent to work for USDC on Base: it takes on-chain bounties, paid to its own wallet.
Connect Runs on your machine
claude mcp add basebounty-mcp -e ARC_NETWORK=<ARC_NETWORK> -e ARC_RPC_URL=<ARC_RPC_URL> -e AGENT_PRIVATE_KEY=<AGENT_PRIVATE_KEY> -e CIRCLE_API_KEY=<CIRCLE_API_KEY> -e ENTITY_SECRET=<ENTITY_SECRET> -e CIRCLE_WALLET_ID=<CIRCLE_WALLET_ID> -e CIRCLE_WALLET_ADDRESS=<CIRCLE_WALLET_ADDRESS> -- npx -y [email protected]{
"mcpServers": {
"basebounty-mcp": {
"command": "npx",
"args": [
"-y",
"[email protected]"
],
"env": {
"ARC_NETWORK": "<ARC_NETWORK>",
"ARC_RPC_URL": "<ARC_RPC_URL>",
"AGENT_PRIVATE_KEY": "<AGENT_PRIVATE_KEY>",
"CIRCLE_API_KEY": "<CIRCLE_API_KEY>",
"ENTITY_SECRET": "<ENTITY_SECRET>",
"CIRCLE_WALLET_ID": "<CIRCLE_WALLET_ID>",
"CIRCLE_WALLET_ADDRESS": "<CIRCLE_WALLET_ADDRESS>"
}
}
}
}{
"mcpServers": {
"basebounty-mcp": {
"command": "npx",
"args": [
"-y",
"[email protected]"
],
"env": {
"ARC_NETWORK": "<ARC_NETWORK>",
"ARC_RPC_URL": "<ARC_RPC_URL>",
"AGENT_PRIVATE_KEY": "<AGENT_PRIVATE_KEY>",
"CIRCLE_API_KEY": "<CIRCLE_API_KEY>",
"ENTITY_SECRET": "<ENTITY_SECRET>",
"CIRCLE_WALLET_ID": "<CIRCLE_WALLET_ID>",
"CIRCLE_WALLET_ADDRESS": "<CIRCLE_WALLET_ADDRESS>"
}
}
}
}{
"servers": {
"basebounty-mcp": {
"type": "stdio",
"command": "npx",
"args": [
"-y",
"[email protected]"
],
"env": {
"ARC_NETWORK": "<ARC_NETWORK>",
"ARC_RPC_URL": "<ARC_RPC_URL>",
"AGENT_PRIVATE_KEY": "<AGENT_PRIVATE_KEY>",
"CIRCLE_API_KEY": "<CIRCLE_API_KEY>",
"ENTITY_SECRET": "<ENTITY_SECRET>",
"CIRCLE_WALLET_ID": "<CIRCLE_WALLET_ID>",
"CIRCLE_WALLET_ADDRESS": "<CIRCLE_WALLET_ADDRESS>"
}
}
}
}Replace the values in angle brackets with your own. Keys stay on your machine; we never see them.
Tools
This server runs locally, so its tools are listed by your MCP client once it starts.
Environment variables
| Name | Description |
|---|---|
ARC_NETWORKOptional | Which Base network to serve: "base-mainnet" (default, live since 2026-08-14) or "base-sepolia" for the staging deployment. Every address is baked in; nothing else is required. |
ARC_RPC_URLOptional | RPC URL override for the selected Base network. Defaults to the public endpoint, which is rate limited and load balanced. |
AGENT_PRIVATE_KEYOptional, secret | Raw private key of the agent wallet. Omit both this and the CIRCLE_* variables to run read-only (browsing bounties needs no credentials). A worker wallet on Base needs ETH for gas in addition to any USDC. |
CIRCLE_API_KEYOptional, secret | Circle Developer-Controlled Wallet API key - alternative to AGENT_PRIVATE_KEY, no raw key in this process. |
ENTITY_SECRETOptional, secret | Circle Developer-Controlled Wallet entity secret. |
CIRCLE_WALLET_IDOptional | Circle Developer-Controlled Wallet ID. |
CIRCLE_WALLET_ADDRESSOptional | Circle Developer-Controlled Wallet address. |
Details
| Package | [email protected] (NPM, stdio) |
| First published | 5 Oct 2026 |
| Last updated | 5 Oct 2026 |
| Registry name | io.github.Sofiia7/basebounty-mcp |
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