---
slug: "ShoutWhisper"
name: "ShoutWhisper"
type: "Protocols"
layer: "Society"
ref: "ShoutWhisper#b12b"
sema_id: "sema:ShoutWhisper#mh:SHA-256:b12ba94fa0c10a49e1d2910fa6adfcce90f99041b8d8481a855d2093e43979ac"
tags: ["Society","Protocols"]
updated: 2026-11-11
mindscape: "bootstrap"
index_url: https://mindscape.world/scapes/bootstrap.json
url: https://mindscape.world/bootstrap/ShoutWhisper/
related: ["Check","Global","sema:Route#mh:SHA-256:7c7e44685dd8d0fffb3d9ff54cbfb5eba19791e324b6a6ed66382b03f2226fc9"]
---

# ShoutWhisper

Dual-mode communication

Layer: Society · Category: Protocols

## Mechanism

Agents 'Shout' (broadcast) high-level intent to discover peers, then switch to 'Whisper' (encrypted P2P) for the actual coordination. Optimizes bandwidth and privacy.

## Invariants

- Amplitude [Check](https://mindscape.world/scapes/bootstrap/Check.md): Shout must reach >90% of network
- Privacy [Check](https://mindscape.world/scapes/bootstrap/Check.md): Whisper content encrypted to Recipient

## Preconditions

- Broadcast channel available

## Postconditions

- [Global](https://mindscape.world/scapes/bootstrap/Global.md) signal sent, payload private

## Failure modes

- Metadata leakage during the Shout phase.

## Caution

Coordination moves to encrypted channels monitors cannot read — keep a record of who whispered to whom, or collusion goes unseen.

## Builds on

- [Check](https://mindscape.world/scapes/bootstrap/Check.md) (Infrastructure; References)
- [Global](https://mindscape.world/scapes/bootstrap/Global.md) (Society; References)

## Used by

—

## Identity

- Sema ID: `sema:ShoutWhisper#mh:SHA-256:b12ba94fa0c10a49e1d2910fa6adfcce90f99041b8d8481a855d2093e43979ac`
- Ref: `ShoutWhisper#b12b`
- Supersedes:
  - `sema:ShoutWhisper#mh:SHA-256:35ddf298feb20dc16aeaa1294566eddb2dda1928744d7d25e747ae9a697d0d78`
  - `sema:ShoutWhisper#mh:SHA-256:f9a8bedaa2a57a13a489fbc7e19b9dd780dc00b9f589d14e4eaab3ae404db82d`

## Links

- [Pattern page](https://mindscape.world/bootstrap/ShoutWhisper/)
- [View in the interactive graph](https://mindscape.world/bootstrap/#ShoutWhisper)
- [JSON](https://mindscape.world/scapes/bootstrap/ShoutWhisper.json)
- [Index of all patterns](https://mindscape.world/scapes/bootstrap.json)