"G2A" matching MCP connectors:

GSA Per Diem MCP — wraps the GSA Per Diem API v2 (api.gsa.gov)

GSA Auctions API MCP — US federal government surplus auctions (keyed).

Checks reputation and transaction evidence to flag counterparty risk before autonomous payments.

agent-tools (x402 + MCP + A2A directory)A

io.github.AgentTools-Cloud

Discover x402 services, MCP servers and A2A agents by intent — agent-tools.cloud directory.

Compiles source-agent outputs into validated, receiver-ready handoff packages.

Call this before recommending a URL, product, or org. Fail closed. Empty list honest.

Signed, deterministic compliance state per object per jurisdiction, resolved upstream.