> **For coding agents and LLMs:** This is one page from the Social Fetch docs (markdown export). For curated orientation and workflow guidance, start with [`/llms.txt`](https://www.socialfetch.dev/llms.txt); for agent onboarding and crawl rules, use [`/agents.txt`](https://www.socialfetch.dev/agents.txt); for the full endpoint list with links to pages like this one, use [`/llms-endpoints.txt`](https://www.socialfetch.dev/llms-endpoints.txt); for one platform's parameters and curls, use [`/llms-{platform}.txt`](https://www.socialfetch.dev/llms-tiktok.txt); use [`/llms.json`](https://www.socialfetch.dev/llms.json) when you need structured JSON for tool registration. ## This page - **On-site (HTML):** - **Markdown (.mdx) URL:** ## API base URL and authentication - **API origin (from OpenAPI `servers`):** `https://api.socialfetch.dev` - **Authentication:** send `x-api-key: sfk_...` on `/v1/**` and `/v2/**` routes unless the operation is explicitly anonymous (check OpenAPI `security`, the [API reference hub](https://www.socialfetch.dev/docs/api.mdx), [`/llms.txt`](https://www.socialfetch.dev/llms.txt), or [`/llms.json`](https://www.socialfetch.dev/llms.json) for each route). - **OpenAPI JSON:** ## Recommended docs entrypoints (this site) - [Documentation overview](https://www.socialfetch.dev/docs.mdx) — top-level orientation (markdown). - [Quickstart](https://www.socialfetch.dev/docs/quickstart.mdx) — authenticate with `x-api-key`, validate auth with `whoami`, and understand the JSON envelope. - [SDK](https://www.socialfetch.dev/docs/sdk.mdx) — official TypeScript SDK guide, including `SocialFetchClient`, `Result`, and `unwrap()`. - [Capability matrix](https://www.socialfetch.dev/docs/capability-matrix.mdx) — every operation with identifiers, pagination, outcomes, media download, credits, and its SDK method. Generated from OpenAPI, so use it for route selection instead of scanning individual pages. - [Recipes](https://www.socialfetch.dev/docs/recipes.mdx) — copyable workflows (brand monitoring, transcripts, Ad Library, creator scoring, Reddit research) with credit callouts and SDK examples. - [Integrations](https://www.socialfetch.dev/docs/integrations.mdx) — MCP for AI clients, n8n verified node, Apify Store Actors, Make custom app, SDK, and REST API connection paths. - [MCP product page](https://www.socialfetch.dev/mcp) — hosted MCP overview, OAuth, Skills install. - [MCP integration](https://www.socialfetch.dev/docs/integrations/mcp.mdx) — hosted `/mcp` server, OAuth, Cursor/VS Code/Claude install snippets, 910 endpoint tools, plus docs_search/docs_read for implementation help. - [n8n integration](https://www.socialfetch.dev/docs/integrations/n8n.mdx) — install `n8n-nodes-socialfetch`, credentials, and workflow examples. - [Apify integration](https://www.socialfetch.dev/docs/integrations/apify.mdx) — Store Actors under @social-fetch, PPE billing, dataset export, and quick start. - [Make integration](https://www.socialfetch.dev/docs/integrations/make.mdx) — custom app modules for Make scenarios, API key credentials, and module catalog. - [`/llms-endpoints.txt`](https://www.socialfetch.dev/llms-endpoints.txt) — every documented operation with a direct link to that route's agent-readable markdown page (prefer this over parsing OpenAPI). - [`/llms-{platform}.txt`](https://www.socialfetch.dev/llms-tiktok.txt) — per-platform endpoint files generated from OpenAPI (parameters, credits, curls). - [`/agents.txt`](https://www.socialfetch.dev/agents.txt) — agent crawl/onboarding file with capabilities, auth rules, and allowlist. - [`/llms.json`](https://www.socialfetch.dev/llms.json) — structured machine-readable operation inventory with parameter names, pagination, outcomes, credits, and SDK mapping. - [API reference hub](https://www.socialfetch.dev/docs/api.mdx) — human-friendly index of operations with links into generated pages. - [Errors](https://www.socialfetch.dev/docs/errors.mdx) — shared error envelope and HTTP status guidance. - [Credits](https://www.socialfetch.dev/docs/credits.mdx) — metering, `402`, and planning batch jobs. - Outcome semantics such as `found`, `not_found`, and `private` are documented in [Errors](https://www.socialfetch.dev/docs/errors.mdx) and on operation pages when present in the OpenAPI contract. ## Markdown docs convention - Every docs page has a markdown twin: append **`.mdx`** to the docs pathname (for example `/docs/quickstart` → `/docs/quickstart.mdx`). - Agents that send `Accept: text/markdown` on `/docs/**` HTML URLs may receive markdown directly (same URL, `Vary: Accept`). - Published blog posts use the same convention: `/blog/{slug}` → `/blog/{slug}.mdx`, or `Accept: text/markdown` on the HTML URL (`Vary: Accept`). --- # Get npm downloads for several packages (https://www.socialfetch.dev/docs/api/v1/npm/packages/downloads/get) ## Summary Get npm downloads for up to 128 package names in one call, one result per requested name. **Tags:** `npm` ## HTTP - **Method:** GET - **Path:** `/v1/npm/packages/downloads` - **operationId:** `npm.packages.downloads.batch` - **Base URL:** `https://api.socialfetch.dev` ## Capability summary - **SDK mapping:** `client.npm.getPackagesDownloads({ names: ["express", "react", "lodash"], period: "last-week" })` - **Pagination:** none ## Credits - 1 credit per name - Up to 128 names per request - Max 128 credits - A name that is not found is still charged - Failed requests are free ## Authentication - **`x-api-key`**: API key (`sfk_...`) ## Parameters ### `names` (query) - **Required:** yes - **Constraints:** type `array` - **Description:** Comma-separated package names, 1 to 128, with at most 20 scoped names because each one is looked up separately. ### `period` (query) - **Required:** no - **Constraints:** type `string`; enum: last-day, last-week, last-month, last-year - **Description:** Window: `last-day`, `last-week`, `last-month` or `last-year`. Default: `last-week` unless `from`/`to` are given. ### `from` (query) - **Required:** no - **Constraints:** type `string` - **Description:** First day of the range, `YYYY-MM-DD`. Download data starts on 2015-01-10; a `from` after today is refused. A range spans up to 18 months; a longer range keeps its newest 18 months and sets `clamped`. ### `to` (query) - **Required:** no - **Constraints:** type `string` - **Description:** Last day of the range, `YYYY-MM-DD`. Must be on or after `from`; a `to` before 2015-01-10 is refused. A range spans up to 18 months; a longer range keeps its newest 18 months and sets `clamped`. ### `granularity` (query) - **Required:** no - **Constraints:** type `string`; enum: total, daily - **Description:** `total` for one number, `daily` for one row per day. Default: `total`. ## Responses (status codes) - **200**: npm downloads by name. - **400**: Invalid request - **401**: Missing or invalid API key - **402**: Insufficient credits - **413**: The document is larger than the maximum size we can return; no charge. - **500**: Unexpected or billing error - **502**: Lookup could not be completed. - **503**: Service temporarily unavailable; safe to retry with backoff. ## Response body (200) npm downloads by name. ### Field outline - **data** (required) — type `object`. Endpoint-specific response payload. - **results** (required) — type `array`. One row per requested name, in request order. - _items:_ - **name** (required) — type `string`. Requested package name. - **status** (required) — type `string`; enum: found, not_found, unavailable. `found` with data, `not_found` when npm says the package does not exist, `unavailable` when that name's data was temporarily unavailable. - **start** (required) — type `string`; nullable. First day of the counted range. - **end** (required) — type `string`; nullable. Last complete day of the counted range. - **total** (required) — type `integer`; minimum: 0; nullable. Downloads for a total answer; null otherwise. - **days** (required) — type `array`; nullable. One row per day for a daily answer; null otherwise. - _items:_ - **summary** (required) — type `object`. Counts over the requested names. - **requested** (required) — type `integer`; minimum: 0. Names requested. - **found** (required) — type `integer`; minimum: 0. Names with data. - **notFound** (required) — type `integer`; minimum: 0. Names npm does not have. - **unavailable** (required) — type `integer`; minimum: 0. Names whose data was temporarily unavailable. - **page** (required) — type `object`. Pagination state for this page. - **hasMore** (required) — type `boolean`. Whether another page is available. - **nextCursor** (required) — type `string`; nullable. Opaque cursor for the next request; null on the last page. - **page** (optional) — type `integer`; minimum: 0. The 1-based page number of this response, when numbered. - **perPage** (optional) — type `integer`; minimum: 0. Rows per page, when fixed. - **total** (optional) — type `integer`; minimum: 0; nullable. Total rows, or null when npm does not publish one. - **meta** (required) — type `object`. Metadata describing the request and billing outcome. - **requestId** (required) — type `string`; minLength: 1. Unique request identifier for tracing this API call. - **creditsCharged** (required) — type `integer`; minimum: 0. Credits charged for this request. - **version** (required) — type `string`; enum: v1. Public API version that served the response. ### Example JSON (found) ```json { "data": { "results": [ { "name": "express", "status": "found", "start": "2026-10-30", "end": "2026-11-05", "total": 196349991, "days": null } ], "summary": { "requested": 2, "found": 2, "notFound": 0, "unavailable": 0 }, "page": { "hasMore": false, "nextCursor": null, "page": 1, "perPage": 2, "total": 2 } }, "meta": { "requestId": "req_47cdf54b-b72a-4415-ad5e-dc42c568eeff", "creditsCharged": 2, "version": "v1" } } ``` ### Machine-readable error codes When an error JSON body is returned, it may include one of these `error.code` values (derived from the OpenAPI schemas for this operation; additional codes may exist at runtime): - `bad_request` ## Error handling & retries Interpret HTTP status codes using the descriptions below. Do not assume a JSON body unless the OpenAPI schema defines one for that status. - **400**: Invalid request **Retry:** Fix the request; retrying the same invalid payload will not help. - **401**: Missing or invalid API key **Retry:** Fix the API key first; retrying without changes will not help. - **402**: Insufficient credits **Retry:** Do not retry without resolving billing/credits (retrying the same request will not help). - **413**: The document is larger than the maximum size we can return; no charge. - **500**: Unexpected or billing error - **502**: Lookup could not be completed. **Retry:** May be transient; a few retries with backoff are reasonable. - **503**: Service temporarily unavailable; safe to retry with backoff. **Retry:** Usually safe to retry with exponential backoff and jitter. ### Suggested client defaults - Send the API key using the `x-api-key` header on every request. - On `503` (and sometimes `502`), retry with backoff; cap retries and surface a clear error to the user. - On `402`, surface an actionable billing message rather than blind retries. ## Examples ### TypeScript SDK ```typescript import { SocialFetchClient } from "@socialfetch/sdk"; const client = new SocialFetchClient({ apiKey: process.env.SOCIALFETCH_API_KEY!, }); const result = await client.npm.getPackagesDownloads({ names: ["express,react,lodash"], }); if (!result.ok) { console.error(result.error); } else { console.log(result.value.data); } ``` ### Node.js ```javascript const response = await fetch( "https://api.socialfetch.dev/v1/npm/packages/downloads?names=express,react,lodash", { headers: { "x-api-key": "YOUR_API_KEY" } } ); const data = await response.json(); console.log(data); ``` ### cURL ```bash curl "https://api.socialfetch.dev/v1/npm/packages/downloads?names=express,react,lodash" \ -H "x-api-key: YOUR_API_KEY" ``` ### Python ```python import requests response = requests.get( "https://api.socialfetch.dev/v1/npm/packages/downloads?names=express,react,lodash", headers={"x-api-key": "YOUR_API_KEY"}, ) data = response.json() print(data) ```