Circle Skills

Claude Code: /plugin marketplace add anthropics/claude-plugins-official → /plugin install circle-skills@claude-plugins-official

The seller-side skill is the most opinionated of the set: it lists the answers that mean the agent has drifted back to generic x402 habits — defaulting to Base mainnet, reaching for the FastAPI middleware package, treating batching as a later concern — and rejects each one, because Circle's path routes the 402 negotiation through Gateway nanopayments with gasless authorisations and batched settlement. Gateway itself has no SDK to install and is a contract-level integration: deposit into a Gateway Wallet on any supported chain, then burn on the source and mint on the destination without waiting for source finality. Wallets come in developer-controlled, user-controlled and modular variants, each with its own skill, alongside bridging, swaps, spend policy and the Circle CLI.