Per-tool capability ACL + AAE envelope verification for agent-to-agent communication. Drop-in Express middleware. Hard-denies structured caps at the gateway, soft-mediates conversation at the prompt layer. MIT.
Sender-side counterpart to a2a-acl. Express middleware that lets unauthenticated web traffic (visitors, LLM sandboxes, third-party services) reach AAE-protected agent-to-agent endpoints — your service signs envelopes on the visitor's behalf, captures their identity for audit, rate-limits per IP.
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