Payment Execution Skill: AgentPay MCP for Agentic Commerce

Your context-engineering framing for agent skills is exactly right - skills need structured context, not just tool definitions. The Peking University GAIL paper (arxiv 2601.21557) citing this repo as the static skill baseline reinforces that.

One skill category that's missing from the collection: payment execution. Production agent systems that handle commerce need a payment skill that follows the same context-engineering pattern - structured tool definitions, clear input/output schemas, and guardrails built into the skill context.

We built AgentPay MCP - an MCP server for non-custodial USDC payments via the x402 protocol. It recently got merged into NVIDIA's official NeMo-Agent-Toolkit-Examples catalog (PR #17) as a payment tool reference.

A payment-execution skill for this collection would include:

• create_payment / check_balance / verify_transaction tool definitions
• Context-engineered prompts that teach agents when and how to authorize payments
• Spending policy guardrails as skill-level constraints

Would you be open to a PR adding a payment execution skill based on AgentPay MCP? Happy to draft it following your existing skill structure.