# GSP Message 0.1

GSP Message is a lightweight agent communication format.

It references GSP ids and does not replace `.gsp` files.

```yaml
gspMessageVersion: 0.1
id: msg.implement.lottery_page
from: planner
to: implementer
intent: implement
entry: page.lottery.main
stage: implement
requires:
  - ui.button.reward_primary
  - feedback.positive
contextPack:
  mode: implement
  depth: -1
  budget: 12000
```

Required fields:

| Field | Meaning |
|---|---|
| `gspMessageVersion` | Message protocol version. |
| `id` | Message id. |
| `from` | Sender agent or module id. |
| `to` | Receiver agent or module id. |
| `intent` | Task intent. |
| `entry` | Entry GSP id. |

Validation:

```bash
gsp message validate message.gspmsg --root .
```

The validator checks message version, required fields, intent, stage, entry GSP, and required GSP references.