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 |
Instructions
Guidance the server publishes about itself, which clients place ahead of the tool catalog so the model reads it before choosing anything.
This server publishes no instructions, or was last inspected before Glama recorded them.
Capabilities
Features and capabilities supported by this server
Protocol revision2025-11-25
| 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 | |
TDQS
Scored across 6 tools
Each tool targets a distinct action: balance check, policy setting, USDC transfer, wallet creation, wallet listing, and x402 payment. There is no overlap in purpose.
All tools follow a consistent snake_case naming pattern with 'circle_' prefix and verb_noun structure (e.g., circle_balance, circle_policy_set). No style mixing.
6 tools is well-scoped for managing Circle agent wallets, covering creation, listing, balance, transfers, policy, and x402 payments. Neither too few nor too many.
Covers core wallet operations (create, list, balance, transfer, policy, x402) but lacks update or delete wallet functionality. Minor gap for full lifecycle.