# NuGet API > The NuGet.org registry — the package ecosystem of .NET — as an API. Look up any NuGet package for its description, latest version, total download count, authors, tags, project, license and icon URLs; search the registry by keyword across millions of packages; and list a package's full version history (newest first). Live from the official NuGet APIs. Ideal for package dashboards, dependency and supply-chain tooling, developer portals and .NET ecosystem analytics. Open data from NuGet.org. ## Authentication All requests require your oanor API key in the `x-oanor-key` header. Get one at https://www.oanor.com/developer/keys. ```bash curl -H "x-oanor-key: oanor_live_…" "https://api.oanor.com/nuget-api/..." ``` ## Pricing - **Free** (Free) — 3,470 calls/Mo, 2 req/s - **Starter** ($4/Mo) — 48,050 calls/Mo, 8 req/s - **Pro** ($12/Mo) — 237,600 calls/Mo, 20 req/s - **Mega** ($33/Mo) — 1,192,500 calls/Mo, 50 req/s ## Endpoints ### NuGet #### `GET /v1/package` — Full metadata for a package **Parameters:** - `id` (query, required, string) — Package id, e.g. Newtonsoft.Json, Serilog Example: `Newtonsoft.Json` **Example:** ```bash curl -H "x-oanor-key: $KEY" \ "https://api.oanor.com/nuget-api/v1/package?id=Newtonsoft.Json" ``` **Response:** ```json { "data": { "package": { "id": "Newtonsoft.Json", "tags": [ "json" ], "authors": [ "James Newton-King" ], "summary": null, "version": "13.0.5-beta1", "icon_url": "https://api.nuget.org/v3-flatcontainer/newtonsoft.json/13.0.5-beta1/icon", "verified": true, "nuget_url": "https://www.nuget.org/packages/Newtonsoft.Json", "description": "Json.NET is a popular high-performance JSON framework for .NET", "license_url": "https://www.nuget.org/packages/Newtonsoft.Json/13.0.5-beta1/license", "project_url": "https://www.newtonsoft.com/json", "total_downloads": 8360907153 } }, "meta": { "timestamp": "2026-05-31T10:38:16.456Z", "request_id": "f1259cd5-292e-470f-8c66-96162238158b" }, "status": "ok", "message": "Package retrieved", "success": true } ``` #### `GET /v1/search` — Search the registry **Parameters:** - `q` (query, required, string) — Search term Example: `json` - `prerelease` (query, optional, string) — true = include prerelease packages - `limit` (query, optional, string) — Results per page (1-100, default 20) Example: `20` - `skip` (query, optional, string) — Pagination offset Example: `0` **Example:** ```bash curl -H "x-oanor-key: $KEY" \ "https://api.oanor.com/nuget-api/v1/search?q=json&limit=20&skip=0" ``` **Response:** ```json { "data": { "skip": 0, "count": 20, "limit": 20, "query": "json", "total": 10086, "results": [ { "id": "Newtonsoft.Json", "tags": [ "json" ], "authors": [ "James Newton-King" ], "summary": null, "version": "13.0.4", "icon_url": "https://api.nuget.org/v3-flatcontainer/newtonsoft.json/13.0.4/icon", "verified": true, "nuget_url": "https://www.nuget.org/packages/Newtonsoft.Json", "description": "Json.NET is a popular high-performance JSON framework for .NET", "license_url": "https://www.nuget.org/packages/Newtonsoft.Json/13.0.4/license", "project_url": "https://www.newtonsoft.com/json", "total_downloads": 8360907153 }, { "id": "System.Text.Json", "tags": [], "authors": [ "Microsoft" ], "summary": null, "version": "10.0.8", "icon_url": "https://api.nuget.org/v3-flatcontainer/system.text.json/10.0.8/icon", "verified": true, "nuget_url": "https://www.nuget.org/packages/System.Text.Json", "description": "Provides high-performance and low-allocating types that se …(truncated, see openapi.json for full schema) ``` #### `GET /v1/versions` — Version history of a package **Parameters:** - `id` (query, required, string) — Package id, e.g. Serilog Example: `Serilog` - `limit` (query, optional, string) — Max versions (1-200, default 50) Example: `50` **Example:** ```bash curl -H "x-oanor-key: $KEY" \ "https://api.oanor.com/nuget-api/v1/versions?id=Serilog&limit=50" ``` **Response:** ```json { "data": { "count": 50, "total": 595, "package": "Serilog", "versions": [ "4.3.2-dev-02433", "4.3.2-dev-02430", "4.3.2-dev-02419", "4.3.2-dev-02418", "4.3.1", "4.3.1-dev-02415", "4.3.1-dev-02406", "4.3.1-dev-02404", "4.3.1-dev-02395", "4.3.1-dev-02390", "4.3.1-dev-02387", "4.3.1-dev-02385", "4.3.1-dev-02383", "4.3.1-dev-02373", "4.3.0", "4.3.0-dev-02364", "4.3.0-dev-02363", "4.3.0-dev-02361", "4.3.0-dev-02360", "4.3.0-dev-02358", "4.3.0-dev-02357", "4.2.1-dev-02356", "4.2.1-dev-02355", "4.2.1-dev-02352", "4.2.1-dev-02340", "4.2.1-dev-02337", "4.2.0", "4.2.0-dev-02332", "4.2.0-dev-02331", "4.2.0-dev-02330", "4.2.0-dev-02328", "4.1.1-dev-02320", "4.1.1-dev-02318", "4.1.1-dev-02314", "4.1.0", "4.1.0-dev-02312", "4.1.0-dev-02311", "4.1.0-dev-02302", "4.1.0-dev-02301", "4.1.0-dev-02238", "4.1.0-dev-02235", "4.0.2", "4.0.2-dev-02232", "4.0.2-dev-02226", "4.0.2-dev-02224", "4.0.2-dev-02220", " …(truncated, see openapi.json for full schema) ``` ### Meta #### `GET /v1/meta` — Source & endpoints **Example:** ```bash curl -H "x-oanor-key: $KEY" \ "https://api.oanor.com/nuget-api/v1/meta" ``` **Response:** ```json { "data": { "note": "Live NuGet registry data. /v1/package = full metadata (description, authors, total downloads, project/license/icon URLs, tags) for a package; /v1/search = search the registry by keyword; /v1/versions = the full version list of a package (newest first).", "source": "NuGet.org (the .NET package registry)", "endpoints": [ "/v1/package", "/v1/search", "/v1/versions", "/v1/meta" ] }, "meta": { "timestamp": "2026-05-31T10:38:16.999Z", "request_id": "8e24ed02-75dd-4edb-9763-c4629f0b09a4" }, "status": "ok", "message": "Meta retrieved", "success": true } ``` --- Marketplace page: https://www.oanor.com/api/nuget-api OpenAPI spec: https://www.oanor.com/api/nuget-api/openapi.json