---
# @generated by sylphx-gen 0.1.0 from contracts@e145cc7cf1bc9605f2b27439e5e17ed76a1a2fd7e7021906a013f7565e4a0cd5. Do not edit.
title: "List usage reports"
description: "`billing.usage_reports.list` (GET /v1/{parent}/usage_reports): Lists an org's usage reports, one per billing period."
type: reference
product: platform
summary: "Lists an org's usage reports, one per billing period."
updated: 2026-09-28
nav: false
---

> **This method is not served on the public API.** `api.sylphx.com` does not route this call: its backend is not deployed behind the public API, or does not implement the call. This page documents the contract. It is kept out of the sidebar and of search engines.

Lists an org's usage reports, one per billing period.

**Not available yet.** Sylphx Billing is declared in the registry but no backend serves it: every call answers `501` with the problem code `UNIMPLEMENTED`.

- **Path** `GET https://api.sylphx.com/v1/orgs/acme/usage_reports`
- **Scope** `billing:read`
- **Effect** `read` — nothing is written.
- **Collection** [usage_reports](/docs/api/usage_reports)
- **Query** `page_size`, `page_token`, `filter`, `order_by`
- **Pagination** the answer carries `usage_reports` and, when there is more, `next_page_token`

## Request

| Field | Type | What it is |
| --- | --- | --- |
| `parent` | `string` | The org to list in. Required. |
| `page_size` | `int32` | At most this many; default 50, clamped to 1000. |
| `page_token` | `string` | `next_page_token` of the previous page. |
| `filter` | `string` | AIP-160 filter over labels and filterable fields. |
| `order_by` | `string` | AIP-132 ordering over filterable fields. |

## Response

| Field | Type | What it is |
| --- | --- | --- |
| `usage_reports` | `UsageReport[]` | The page. |
| `next_page_token` | `string` | The token of the next page; empty on the last page. |

### UsageReport

| Field | Type | What it is |
| --- | --- | --- |
| `name` | `string` | `orgs/{org}/usage_reports/{YYYY-MM}`. |
| `uid` | `string` | `usr_<cell><ulid>`. Output only. |
| `meta` | `ResourceMeta` | Resource metadata. Output only. |
| `period_start_time` | `timestamp` | The start of the period. Output only. |
| `period_end_time` | `timestamp` | The end of the period. Output only. |
| `lines` | `UsageLine[]` | One line per project, meter, and dimension set. Output only. |
| `completeness` | `double` | The share of the period's usage that has reached Billing, from 0 to 1, from every emitter's watermark. Output only. |
| `compute_time` | `timestamp` | The instant the report reflects. Output only. |
| `invoice` | `string` | The period's invoice, once one exists. Output only. |
| `watermarks` | `map<string, timestamp>` | Each emitting service's watermark: the time of the oldest usage it has not yet delivered. Output only. |

### ResourceMeta

| Field | Type | What it is |
| --- | --- | --- |
| `generation` | `int64` | Increases by one on every change to `spec`. Output only. |
| `etag` | `string` | Strong ETag (AIP-154): changes on any change to spec, status, or metadata. Send it back as `If-Match` or `etag` to make Update and Delete conditional; a mismatch fails with ABORTED / 409 `ETAG_MISMATCH`. Output only. |
| `create_time` | `timestamp` | When the Resource was created. Output only. |
| `update_time` | `timestamp` | When the Resource last changed. Output only. |
| `delete_time` | `timestamp` | Set while the Resource is being deleted. Output only. |
| `labels` | `map<string, string>` | Caller-writable, indexed labels (AIP-122 label rules). |
| `annotations` | `map<string, string>` | Caller-writable, unindexed annotations. |
| `display_name` | `string` | Caller-writable human-readable name. |
| `creator` | `string` | The principal that created the Resource. Output only. |

### UsageLine

| Field | Type | What it is |
| --- | --- | --- |
| `project` | `string` | The project that used it; empty for org-level usage (Runners, Network domains), whose attribution is a dimension such as `repo`. Output only. |
| `meter` | `string` | The meter id. Output only. |
| `meter_version` | `int32` | The meter version. Output only. |
| `dimensions` | `map<string, string>` | The dimensions. Output only. |
| `quantity` | `int64` | The aggregated quantity, in the meter's base unit. Output only. |
| `event_count` | `int64` | How many usage events were aggregated. Output only. |
| `amount` | `Money` | The rated amount so far, before rounding to the invoice line; unset while the meter has no price for these dimensions. Output only. |
| `service` | `string` | The service that emits the meter. Output only. |
| `shadow_cost` | `Money` | What the usage cost Sylphx to serve, for a class Sylphx runs but does not sell (an internal Sandboxes class rates at zero and shows its cost here); unset otherwise. Output only. |

### Money

| Field | Type | What it is |
| --- | --- | --- |
| `currency_code` | `string` | ISO 4217 currency, for example `USD`. Required. |
| `units_minor` | `int64` | The amount in the currency's minor unit (cents for USD). Required. |

## Errors

- [`UNAUTHENTICATED`](/docs/api/errors/UNAUTHENTICATED) — No valid key or token was presented.
- [`PERMISSION_DENIED`](/docs/api/errors/PERMISSION_DENIED) — The key lacks the method's permission.
- [`INVALID_FIELD`](/docs/api/errors/INVALID_FIELD) — A field failed validation.
- [`PAGE_TOKEN_MISMATCH`](/docs/api/errors/PAGE_TOKEN_MISMATCH) — A page token was reused with different parameters.

Every error arrives in the body [Errors](/docs/platform/errors) describes.

## Examples

**cURL**

```curl
curl "https://api.sylphx.com/v1/orgs/acme/usage_reports" \
  -H "Authorization: Bearer $SYLPHX_API_KEY"
```

**TypeScript**

```ts
const response = await sylphx.billing.usageReports.list({ parent: 'orgs/acme' })
```

**Rust**

```rust
let mut req = sylphx::billing::ListUsageReportsRequest::default();
req.parent = "orgs/acme".to_string();
let response = sx.billing().usage_reports().list(req).await?;
```

**CLI**

```bash
sylphx billing usage-reports list orgs/acme
```

**MCP**

```json
{ "method_id": "billing.usage_reports.list", "args": {"parent":"orgs/acme"} }
```