# GET /opportunities/:id/invoices

**Resource:** [Opportunities](./opportunities.md)  
**Scopes:** `opportunities:read`, `invoices:read`  
**Write operation:** no

List invoices linked to an opportunity. Invoices are read-only here -- this endpoint surfaces every invoice that references the opportunity via trustpager_deal_id, so AI agents and integrations can answer "what has this customer been billed for?" without needing the invoices:write scope. Requires the invoices:read scope. Legacy alias: GET /deals/:id/invoices. Matching MCP tool: list_opportunity_invoices.

## Parameters

| Name | In | Type | Required | Description |
|------|----|------|----------|-------------|
| `id` | path | uuid | yes | Opportunity ID |

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Base URL: `https://api.trustpager.com/functions/v1/api/v1` — Auth: `Authorization: Bearer YOUR_API_KEY`