How to get a URL for a JSON file
JSON is easy to generate but not always easy to keep available outside the system that created it. FilePost gives the file a durable HTTPS URL so another service can fetch it when needed.
The upload endpoint keeps the JSON content intact. Set the content type to application/json when you want browsers and clients to interpret the response as JSON, and use the returned file ID for later file management.
Upload json files with FilePost
Use the authenticated FilePost upload API for json files. The endpoint returns a JSON object containing the public URL, file ID, size, content type, and filename mode.
curl -X POST https://upload.filepost.dev/v1/upload \
-H "X-API-Key: YOUR_API_KEY" \
-F "file=@payload.json"Example response
{
"url": "https://cdn.filepost.dev/file/…",
"file_id": "a1b2c3d4e5f6",
"name": "payload.json",
"size": 84210,
"content_type": "application/json"
}What to do with the returned URL
Use the URL as a fixture, a download, a webhook attachment, or the input to another HTTP request.
fetch("https://cdn.filepost.dev/file/…").then(r => r.json())Good uses for json to URL
- API fixtures and sample payloads
- Webhook and automation handoffs
- Generated JSON exports and configuration files
Know the boundary
FilePost is not a queryable JSON database. It hosts the file; use an API, object query layer, or database when consumers need filtering and transactional updates.
For the complete request and response contract, see the FilePost API documentation. You can also test the flow with the interactive upload on the homepage.