Circle Agent Stack
io.github.kinance
Circle Agent Stack for AI agents: USDC wallets, spend policies, transfers, and x402 nanopayments.
{ "mcpServers": { "io.github.kinance-circle-agent-stack-mcp": { "command": "npx", "args": [ "-y", "[email protected]" ], "env": { "CIRCLE_API_KEY": "<secret>" } } }}.cursor/mcp.jsonMCP server
- Transport
- stdio
- Status
- Local
Power your agent
Add this server
The publisher's own command. Not a PlugMCP endpoint.
Host a copy with our keys and logs.
Local command
npx -y [email protected]Credentials from the publisher
- CIRCLE_API_KEY — Your Circle API key from developers.circle.com
Claude Code has no install link for a local command. Copy the command below and run it in a terminal.
shClaude Code
CIRCLE_API_KEY=<secret> claude mcp add io.github.kinance-circle-agent-stack-mcp -- npx -y circle-agent-stack-mcp@0.1.1Run in a terminal.
jsonClaude Desktop
{ "mcpServers": { "io.github.kinance-circle-agent-stack-mcp": { "command": "npx", "args": [ "-y", "[email protected]" ], "env": { "CIRCLE_API_KEY": "<secret>" } } }}claude_desktop_config.json
Local · npmPublisher installStep-by-step: add this in Claude
Remote URL or a command on your machine? How the two installs differ
Run on PlugMCP
Host a copy with our keys and logs.
A new server you create. It is not this listing's official endpoint. Use the publisher install when you want their URL and their credentials.
LaunchServer facts
Local- Transport
- stdio
- Version
- 0.1.1
- API key
- CIRCLE_API_KEY
- Last checked
- 2026-10-26
- Stars
- —
- Tools
- —
- Uptime
- —
Tools
Tools
No tool list yet. Remote servers get one after the first health check.
FAQ
Questions
How do I install Circle Agent Stack?
Copy the stdio config for Cursor, Claude Desktop, Claude Code, or VS Code on this page. It uses the publisher's install, not a PlugMCP proxy.
Does Circle Agent Stack need an API key?
The publisher lists these environment variables: CIRCLE_API_KEY.
What transport does Circle Agent Stack use?
Circle Agent Stack runs locally over stdio.
When was Circle Agent Stack last checked?
Last checked 2026-10-26. Circle Agent Stack for AI agents: USDC wallets, spend policies, transfers, and x402 nanopayments.
From the publisher
Documentation
README is not crawled yet. Open the repository