https://pypi.org/project/yieldagentx402-langchain/ Recent updates to the Python Package Index for yieldagentx402-langchain en https://pypi.org/project/yieldagentx402-langchain/0.1.3/ LangChain tools for policy-gated YieldAgentX402 execution — discovery, policy preview, receipt verification via the live MCP gateway. Proof: 16 tools, 18 chains, no custody, signed receipts. security@yieldagentx402.app Mon, 18 May 2026 01:37:04 GMT