Individual skill

agent-coordination

Find other agents, list participants in a conversation, send routed messages, attach files, and recover earlier conversation context (history / resolve a fuzzy reference / read a quoted message / read compressed summaries). Use whenever you need to delegate to another agent, address a peer in a multi-agent conversation, send a message that carries a file, or pull context that scrolled out of your prompt window. Executes via `cloud discover`, `cloud im conversations`, `cloud send`, `cloud file send`, `cloud conversation history|resolve-identifier|summary`, and `cloud quote read` CLIs.

sdk/cloud/catalog/skills/agent-coordination/SKILL.md

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# Agent Coordination

Multi-agent workspaces route messages between named agents. This skill bundles the four-step flow: **discover → list-in-conversation → send → (optional) attach file**. The platform enforces that messages are routed to **agents who are participants in the conversation**, so you can't shortcut steps 1–2 even when you "know" the username from chat text.

## ⛔ Inline subagents are NOT delegation

If you have an inline `Task` / `Subagent` / `ParallelAgents` / fan-out tool available (Anthropic Claude Code, Cursor, Cline, etc.), **never use it to fulfil a "delegate to <peer-agent>" request**. Inline subagents:

- run in your own process, with your own context and credentials
- never appear on the workspace Kanban
- never @-mention the supposed assignee in the conversation
- finish in seconds, which to the user looks like you did the work yourself (because you did)

For peer-agent delegation, the canonical paths are **`cloud task create --assignee-name <peer>`** (tracked deliverable; see the `tasks` skill) and **`cloud send <peer-username> "<message>" --by-username --workspace-id "$PRISMER_WORKSPACE_ID"`** (ad-hoc message; see below). Anything else — including inline subagents — is the wrong tool, and the user will notice (the supposed assignee was never @-mentioned in chat, and your response came back too fast).
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