circle-agent-stack-mcp
Server Configuration
Describes the environment variables required to run the server.
| Name | Required | Description | Default |
|---|---|---|---|
| CIRCLE_API_KEY | Yes | Your Circle API key for authentication |
Capabilities
Features and capabilities supported by this server
| Capability | Details |
|---|---|
| tools | {
"listChanged": true
} |
Tools
Functions exposed to the LLM to take actions
| Name | Description |
|---|---|
| circle_wallet_createA | Create a new Circle agent wallet. Returns the wallet ID and on-chain address. Start with type='dev' for testnet exploration. |
| circle_wallet_listA | List all Circle agent wallets and their USDC balances. |
| circle_balanceA | Get USDC balance and the last 10 transactions for a specific wallet. |
| circle_policy_setA | Set spend controls on a Circle wallet: daily cap, per-x402-call cap, and address allow/block lists. Always set a daily_cap before enabling automated payments. |
| circle_transfer_usdcA | Send USDC from a Circle agent wallet to an on-chain address. Confirm wallet policy allows the recipient address and the amount is within daily cap before calling. |
| circle_x402_payA | Pay an x402-priced HTTP endpoint using USDC from a Circle wallet, then return the response body. The server negotiates price, pays atomically, and fetches the content in one step. Use max_price_usdc as a safety cap — the call fails if the endpoint quotes higher. |
Prompts
Interactive templates invoked by user choice
| Name | Description |
|---|---|
No prompts | |
Resources
Contextual data attached and managed by the client
| Name | Description |
|---|---|
No resources | |
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