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The Crew — custom ACP agents

The Crew (this section) is for custom agents you bring — ACP/A2A-connected, policy-gated, audited. Built-in Yard operators (SRE, GitOps, FinOps, …) live under Operations.

Disambiguation

Term	Where
Custom ACP / A2A agents	This section
Built-in operator agents	Operations
Agents-as-users (developer copilots)	HoBo for Agents
`agent()` runtime primitive	SDK — both kinds use it
Relay	Network proxy — not an agent

What you configure here

Topic	Page
Agent-as-user identity & MCP	HoBo for Agents · MCP surface
Credentials (scoped, short-lived)	Agent credentials
Pluggable engines / ports	Engines (shared machinery)
Connector protocol (`a2a` / `acp`)	Connectors · Bindle `connector(..., { protocol: "acp" })`

Rules for custom agents

Authenticate as first-class principals — never ambient org-admin
Every tool call and token grant is an auditable fact
High-risk writes pass Gatekeeper / policy obligations
Prefer connector protocols HoBo owns (ACP/A2A) over inventing a private agent SDK

Operations · Security · Observability / audit