---
# @generated by sylphx-gen 0.1.0 from contracts@e145cc7cf1bc9605f2b27439e5e17ed76a1a2fd7e7021906a013f7565e4a0cd5. Do not edit.
title: "List key versions"
description: "`keys.key_versions.list` (GET /v1/{parent}/key_versions): Lists a key's versions."
type: reference
product: platform
summary: "Lists a key's versions."
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 a key's versions.

**Not available yet.** Sylphx Keys 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/projects/shop/envs/production/keys/key/key_versions`
- **Scope** `keys:read`
- **Effect** `read` — nothing is written.
- **Collection** [key_versions](/docs/api/key_versions)
- **Query** `page_size`, `page_token`, `filter`, `order_by`
- **Pagination** the answer carries `key_versions` and, when there is more, `next_page_token`

## Request

| Field | Type | What it is |
| --- | --- | --- |
| `parent` | `string` | The key 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 |
| --- | --- | --- |
| `key_versions` | `KeyVersion[]` | The page. |
| `next_page_token` | `string` | The token of the next page; empty on the last page. |

### KeyVersion

| Field | Type | What it is |
| --- | --- | --- |
| `name` | `string` | `…/keys/{key}/key_versions/{key_version}`; the id is the version number, from 1. |
| `uid` | `string` | `kmv_<cell><ulid>`. Output only. |
| `meta` | `ResourceMeta` | Resource metadata. Output only. |
| `state` | `KeyVersionState` | The version's lifecycle state. Output only. One of `pending`, `enabled`, `retired`, `destroy_scheduled`, `destroyed`. |
| `algorithm` | `KeyAlgorithm` | The algorithm, equal to the key's. Output only. One of `ed25519`, `ec_p256_sha256`, `rsa_pkcs1_2048_sha256`, `rsa_pss_3072_sha256`, `aes_256_gcm`, `hmac_sha256`. |
| `public_key_pem` | `string` | The public key in PEM (SubjectPublicKeyInfo), for asymmetric keys; empty otherwise. Output only. |
| `destroy_time` | `timestamp` | When the version's material is destroyed, or was. 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. |

## 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/projects/shop/envs/production/keys/key/key_versions" \
  -H "Authorization: Bearer $SYLPHX_API_KEY"
```

**TypeScript**

```ts
const response = await sylphx.keys.keyVersions.list({ parent: 'orgs/acme/projects/shop/envs/production/keys/key' })
```

**Rust**

```rust
let mut req = sylphx::keys::ListKeyVersionsRequest::default();
req.parent = "orgs/acme/projects/shop/envs/production/keys/key".to_string();
let response = sx.keys().key_versions().list(req).await?;
```

**CLI**

```bash
sylphx keys key-versions list orgs/acme/projects/shop/envs/production/keys/key
```

**MCP**

```json
{ "method_id": "keys.key_versions.list", "args": {"parent":"orgs/acme/projects/shop/envs/production/keys/key"} }
```