---
# @generated by sylphx-gen 0.1.0 from contracts@e145cc7cf1bc9605f2b27439e5e17ed76a1a2fd7e7021906a013f7565e4a0cd5. Do not edit.
title: "Create a source map"
description: "`observability.source_maps.create` (POST /v1/{parent}/source_maps): Uploads a source map for one release and minified file."
type: reference
product: monitoring
summary: "Uploads a source map for one release and minified file."
updated: 2026-09-28
nav: false
---

Uploads a source map for one release and minified file. Uploading the same release and file again replaces it.

- **Path** `POST https://api.sylphx.com/v1/orgs/acme/projects/shop/envs/production/source_maps`
- **Scope** `observability:write`
- **Effect** `write` — a successful call changes state.
- **Collection** [source_maps](/docs/api/source_maps)

## Request

| Field | Type | What it is |
| --- | --- | --- |
| `parent` | `string` | The parent to upload in. Required. |
| `source_map` | `SourceMap` | The source map to upload. Required. |

### SourceMap

| Field | Type | What it is |
| --- | --- | --- |
| `name` | `string` | `orgs/{org}/projects/{project}/envs/{env}/source_maps/{source_map}`. |
| `meta` | `ResourceMeta` | Resource metadata. |
| `release` | `string` | The release the map belongs to, as sent in `ErrorEvent.release`. Required. |
| `file_url` | `string` | The minified file the map describes: its URL (`https://app.example.com/assets/index-3f2a.js`) or its path (`/assets/index-3f2a.js`). A frame matches on the URL path. Required. |
| `content` | `string` | The source map JSON (revision 3), at most 16 MiB. Written, never read back. Required. |

### ResourceMeta

| Field | Type | What it is |
| --- | --- | --- |
| `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. |

## Response

| Field | Type | What it is |
| --- | --- | --- |
| `name` | `string` | `orgs/{org}/projects/{project}/envs/{env}/source_maps/{source_map}`. |
| `uid` | `string` | `smp_<digest>`; the same release and file always have the same id. Output only. |
| `meta` | `ResourceMeta` | Resource metadata. |
| `release` | `string` | The release the map belongs to, as sent in `ErrorEvent.release`. Required. |
| `file_url` | `string` | The minified file the map describes: its URL (`https://app.example.com/assets/index-3f2a.js`) or its path (`/assets/index-3f2a.js`). A frame matches on the URL path. Required. |
| `content` | `string` | The source map JSON (revision 3), at most 16 MiB. Written, never read back. Required. |
| `content_sha256` | `string` | SHA-256 of `content`, hex. Output only. |
| `size_bytes` | `int64` | Size of `content` in bytes. Output only. |
| `upload_time` | `timestamp` | When the map was uploaded. 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.
- [`IDEMPOTENCY_KEY_REUSED`](/docs/api/errors/IDEMPOTENCY_KEY_REUSED) — An Idempotency-Key was reused with another body.
- [`IDEMPOTENCY_IN_PROGRESS`](/docs/api/errors/IDEMPOTENCY_IN_PROGRESS) — The first call with this Idempotency-Key is still running.

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

## Examples

**cURL**

```curl
curl -X POST "https://api.sylphx.com/v1/orgs/acme/projects/shop/envs/production/source_maps" \
  -H "Authorization: Bearer $SYLPHX_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{"content":"…","file_url":"…","release":"…"}'
```

**TypeScript**

```ts
const response = await sylphx.observability.sourceMaps.create({ parent: 'orgs/acme/projects/shop/envs/production', sourceMap: { content: '…', fileUrl: '…', release: '…' } })
```

**Rust**

```rust
let mut req = sylphx::observability::CreateSourceMapRequest::default();
req.parent = "orgs/acme/projects/shop/envs/production".to_string();
req.source_map = Some(sylphx::observability::SourceMap {
    content: "…".to_string(),
    file_url: "…".to_string(),
    release: "…".to_string(),
    ..Default::default()
});
let response = sx.observability().source_maps().create(req).await?;
```

**CLI**

```bash
sylphx observability source-maps create --parent orgs/acme/projects/shop/envs/production --release … --file-url … --content …
```

**MCP**

```json
{ "method_id": "observability.source_maps.create", "args": {"parent":"orgs/acme/projects/shop/envs/production","source_map":{"content":"…","file_url":"…","release":"…"}} }
```