> ## Documentation Index > Fetch the complete documentation index at: https://docs.datacircle.dev/llms.txt > Use this file to discover all available pages before exploring further. # Get a download link > A download link for one file of `GET /files/`, by its `id`: `url`, signed and valid one hour, fetched as is without your API key, and `next_step`, a ready-to-run call per provider for the live profile behind any row. A file not unlocked for this workspace answers `403`, its `error` saying how to unlock it. Free. ## OpenAPI ````yaml /openapi.json post /files/{file_id}/download-link/ openapi: 3.1.0 info: title: Datacircle API version: '1' description: >- Datacircle is a data co-op. Step 1: Query your favorite B2B data APIs through us. Same request, same price, no markup. Step 2: You're DONE. Every morning, you get the flat file of your data plus everyone else's. You send the provider's own request to api.datacircle.dev, with your Datacircle key. That's the only change. Right now we have 3 live LinkedIn profile APIs that we trust: Up2Data, HarvestAPI and Fetchin. Each request goes to the provider and gets the profile as it is today. Add \$50 to your account: you get \$50 of API PLUS the flat file. Sign up at datacircle.dev with your work email: a \$5 credit, that's 2,105 LinkedIn profiles at \$2.375 per 1,000. Use it from Claude, ChatGPT or Cursor: add api.datacircle.dev/mcp as an MCP server. The docs: [docs.datacircle.dev](https://docs.datacircle.dev). termsOfService: https://datacircle.dev/terms contact: name: Datacircle url: https://datacircle.dev email: wayne@datacircle.dev x-logo: url: https://datacircle.dev/favicon.png altText: Datacircle servers: - url: https://api.datacircle.dev security: - token: [] tags: - name: Datacircle description: 'Your Datacircle account: balance, adding funds, files, API key.' - name: Up2Data description: >- LinkedIn Profile API: Up2Data's own request, sent to api.datacircle.dev with your Datacircle key and `X-Data-Provider: up2data`. - name: HarvestAPI description: >- LinkedIn Profile API: HarvestAPI's own request, sent to api.datacircle.dev with your Datacircle key and `X-Data-Provider: harvestapi`. - name: Fetchin description: >- LinkedIn Profile API: Fetchin's own request, sent to api.datacircle.dev with your Datacircle key and `X-Data-Provider: fetchin`. externalDocs: description: Datacircle docs url: https://docs.datacircle.dev paths: /files/{file_id}/download-link/: post: tags: - Datacircle summary: Get a download link description: >- A download link for one file of `GET /files/`, by its `id`: `url`, signed and valid one hour, fetched as is without your API key, and `next_step`, a ready-to-run call per provider for the live profile behind any row. A file not unlocked for this workspace answers `403`, its `error` saying how to unlock it. Free. parameters: - name: file_id in: path required: true description: The file's `id`, from `GET /files/` (List files). schema: type: integer responses: '200': description: '`{"url": ...}`, valid one hour' content: application/json: schema: type: object required: - url - next_step properties: url: type: string description: >- A signed download URL for the file, valid one hour. Fetch it as is, without your API key. next_step: type: object required: - why - curls - docs_url properties: why: type: string description: >- What the file holds and what your balance can pull for its rows. curls: type: array description: >- One ready-to-run call per provider. Keys never name a provider: providers come and go in the list. items: type: object required: - provider - curl properties: provider: type: string description: >- The provider the call goes to: `up2data`, `harvestapi` or `fetchin`, its `X-Data-Provider` value. curl: type: string description: A ready-to-run curl, your API key filled in. docs_url: type: string description: Where Datacircle's docs are (a URL). description: >- What to do with the file next: pull the live LinkedIn profile behind any row, with no markup. example: url: >- https://….r2.cloudflarestorage.com/…/daily/2026-10-11/coop_up2data.parquet?X-Amz-Algorithm=AWS4-HMAC-SHA256&X-Amz-Expires=3600&X-Amz-Signature=… next_step: why: >- This file holds 189 rows as of its export. Your $5 signup credit pulls the live LinkedIn profile behind any row, no markup. curls: - provider: up2data curl: >- curl -X POST "https://api.datacircle.dev/v1/profiles/enrich" -H "Authorization: Token 9944b09199c62bcf9418ad846dd0e4bbdfc6ee4b" -H "X-Data-Provider: up2data" -H "Content-Type: application/json" -d '{"url": "https://www.linkedin.com/in/williamhgates"}' - provider: harvestapi curl: >- curl "https://api.datacircle.dev/linkedin/profile?url=https://www.linkedin.com/in/williamhgates" -H "Authorization: Token 9944b09199c62bcf9418ad846dd0e4bbdfc6ee4b" -H "X-Data-Provider: harvestapi" - provider: fetchin curl: >- curl "https://api.datacircle.dev/api/v1/profile?profileUrlOrUrn=https://www.linkedin.com/in/williamhgates" -H "Authorization: Token 9944b09199c62bcf9418ad846dd0e4bbdfc6ee4b" -H "X-Data-Provider: fetchin" docs_url: https://docs.datacircle.dev '403': description: >- Not unlocked for this workspace: `error` says why, and how to unlock it. content: application/json: schema: $ref: '#/components/schemas/Error' example: error: >- the Up2Data co-op file unlocks once this workspace has added $50 in funds components: schemas: Error: type: object required: - error properties: error: type: string description: What went wrong, in plain words. securitySchemes: token: type: http scheme: bearer description: >- Your API key: `Authorization: Bearer `. `Authorization: Token ` works too. ```` This documentation is built and hosted on [Mintlify](https://mintlify.com), a developer documentation platform.