<!-- Extension API v0 — pre-1.0. Interfaces may change without notice until P2 seals the custom-code format. First-party extensions track HEAD. -->

# `proposal.submit`

Submit an open proposal for the store owner's review (the owner is mailed a link). The proposalId comes from your first recorded mutation's response — or proposals.list.

- **scope**: `proposals:write`
- **storefront-visible** (bumps the catalog generation): no
- **destructive**: no

## Payload

| field | type | required | notes |
|---|---|---|---|
| `proposalId` | string (/^prp_[0-9A-HJKMNP-TV-Z]{26}$/) | yes |  |
| `title` | string (≤120 chars) | yes |  |
| `summary` | string (≤2000 chars, default "") | no |  |

### JSON Schema

```json
{
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "type": "object",
  "properties": {
    "proposalId": {
      "type": "string",
      "pattern": "^prp_[0-9A-HJKMNP-TV-Z]{26}$"
    },
    "title": {
      "type": "string",
      "minLength": 1,
      "maxLength": 120
    },
    "summary": {
      "default": "",
      "type": "string",
      "maxLength": 2000
    }
  },
  "required": [
    "proposalId",
    "title"
  ],
  "additionalProperties": false
}
```