--- name: relay description: "Coordinate multi-agent coding with a shared relay mail service: bootstrap sessions, keep one thread per task, reserve files, send/poll/ack messages, and handle contact handshakes. Trigger when users ask to \"mail for agents\", coordinate swarms or handoffs, inspect why relay workflows are not working, or prevent duplicate edits and routing/thread failures." --- # Relay Drive multi-agent execution with predictable communication contracts. Use stable relay verbs first, then only drop to backend-native tools when debugging. ## Prerequisites - Run your mail coordination server and mount it in your client config. - Use `scripts/relay.py health` to confirm transport and auth. - Use absolute repo path as `project_key`/`human_key`. - Set environment once: `RELAY_SERVER_URL=` `RELAY_BEARER_TOKEN=` ## Adapter Contract Use relay verbs as the public interface: - `start`: bootstrap a working identity and inbox context. - `prepare`: align an agent on one active thread. - `reserve`: claim file scopes before edits. - `send`: publish a thread update. - `poll`: fetch inbox deltas. - `ack`: mark receipt of required messages. - `link`: open a contact path when routing is blocked. Backend tool names are implementation details inside `scripts/relay.py`. ## Script Entry Point - Command: `scripts/relay.py` - Safe inspection mode: add `--dry-run` to print the exact outbound request payload. - Backend remap mode: use `--tool-map ` or `RELAY_TOOL_MAP='{\"start\":\"...\"}'` to remap verbs. ## Operating Workflow 1. Bootstrap identity and inbox. `scripts/relay.py start --project --program --model --task ""` 2. Align on active thread. `scripts/relay.py prepare --project --thread --program --model ` 3. Reserve files before edits. `scripts/relay.py reserve --project --agent --path --reason ` 4. Message with durable thread IDs. `scripts/relay.py send --project --sender --to --subject "" --body "" --thread --ack-required` 5. Poll inbox and acknowledge required receipts. `scripts/relay.py poll --project --agent ` then `scripts/relay.py ack --project --agent --message-id ` 6. Release reservations when work is done. `scripts/relay.py reserve --project --agent --path --auto-release` ## Thread Contract - Reuse one stable `thread_id` per task (`bd-123`, ticket ID, etc.). - Keep subject line scoped to one topic. - Reply in-thread using `reply_message` when continuity matters. - Set `importance` and `ack_required` deliberately; do not overuse `urgent`. ## Contact Contract - Default policy is consent-aware (`auto`); cold outreach may require handshake. - For unknown recipients or blocked delivery, run `scripts/relay.py link --project --requester --target --auto-accept` where policy allows. - For cross-project communication, include `to_project` and use explicit handshakes. ## File Reservation Contract - Reserve narrow path patterns only. - Treat conflict surfaces as coordination signals, not hard failures. - Use reason strings aligned with task IDs for auditability. ## Failure Routing - `CONTACT_REQUIRED`: request or handshake contact, then retry send. - `CONTACT_BLOCKED`: escalate to human coordinator or alternate recipient. - `RECIPIENT_NOT_FOUND`: register/mint missing identity, then retry. - `FILE_RESERVATION_CONFLICT`: narrow target paths or coordinate and re-reserve. - Execute the exact remediation sequence in `references/error-playbooks.md` before trying ad hoc fixes. ## References - Detailed architecture and communication flow: `references/architecture.md`. - Error playbooks and retry recipes: `references/error-playbooks.md`. - Prompt and workflow examples: `references/examples.md`. - Delegation phrasing adapters for real prompts: `references/prompt-adapters.md`. - Philosophy and invariants: `references/relay-philosophy.md`. - Gap audit and minimal-incision fix plan: `references/relay-gap-audit.md`.

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