Circle
Register Circle’s official marketplace to ship USDC payments, wallets, cross-chain flows, and smart-contract work with agent skills plus live SDK docs via MCP.
Overview
Circle is a plugin marketplace for the Build phase that pairs USDC and stablecoin development skills with Circle’s MCP server for SDK-aware agent guidance.
What is this marketplace?
- Official Circle Technology Services marketplace for stablecoin and USDC app development
- Skills for USDC payments, cross-chain transfers, wallets, and smart contracts
- Bundled Circle MCP server for real-time SDK and documentation guidance
- circle-skills plugin sourced from ./plugins/circle
- Aimed at shipping stablecoin apps faster with best-practice agent workflows
- 1 plugin (circle-skills) in the Circle marketplace
- Marketplace metadata version 1.0.0
- Includes Circle MCP server for real-time SDK and documentation guidance
Community signal: 116 GitHub stars.
What problem does it solve?
Building USDC and wallet features without official SDK context leads agents to hallucinate APIs and slow stablecoin shipping.
Who is it for?
Solo builders and small teams shipping stablecoin apps who need USDC, wallet, and contract skills plus MCP-backed docs in Claude Code.
Skip if: Products with no crypto or fiat-stablecoin requirements, or teams that refuse third-party financial infrastructure.
What do I get? / Deliverables
After registering Circle’s marketplace, your agent can follow Circle best practices and query live documentation while you integrate payments and contracts.
- Installed circle-skills plugin from the Circle marketplace
- Agent-accessible Circle MCP for SDK and documentation lookups
- Guided workflows for USDC payments, transfers, wallets, and contracts
Plugins in this marketplace
1 plugin — install individually after you add the marketplace.
Recommended Marketplaces
Journey fit
Stablecoin app work lands in Build when you wire payments, wallets, and contracts into your product; Circle’s bundle is the integration layer for that implementation phase. Integrations is the right shelf because the catalog is SDK-, MCP-, and payments-API-oriented rather than generic frontend polish or launch distribution.
How it compares
Official fintech integration marketplace with MCP, not a generic coding skill pack.
Common Questions / FAQ
Who is Circle for?
Circle is for developers building stablecoin applications who want official USDC, wallet, cross-chain, and smart-contract skills with MCP documentation support in their agent.
When should I use Circle?
Use Circle when you are implementing or prototyping Circle-based payments and crypto infrastructure and need agent steps aligned to Circle SDKs and docs.
How do I add Circle to my agent?
Add the Circlefin/skills Claude marketplace, install the Circle-skills plugin, and enable the bundled MCP server so skills and documentation tools are available in your sessions.