| name | upload-and-share |
| description | Upload files to the cloud and get shareable public URLs using agentupload.dev (x402 micropayments). Use when the user asks to upload a file, share a file via URL, host a file, make a file publicly accessible, or needs a download link for any file. Triggers on phrases like "upload this", "share this file", "get me a link", "host this file", "make this downloadable", or any request to put a local file on the internet. |
Upload and Share via agentupload.dev
Upload any local file to S3-backed cloud storage via x402 micropayments. Returns a permanent public URL. No API keys needed.
Workflow
1. Check wallet balance
x402.get_wallet_info()
Ensure sufficient USDC balance for the chosen tier. If balance is low, show the deposit link.
2. Determine the tier
Pick the smallest tier that fits the file. Check file size first with ls -la or wc -c.
| Tier | Max Size | Cost |
|---|
10mb | 10 MB | $0.10 |
100mb | 100 MB | $1.00 |
1gb | 1 GB | $10.00 |
3. Buy the upload slot
x402.fetch(
url: "https://agentupload.dev/api/x402/upload",
method: "POST",
headers: {"Content-Type": "application/json"},
body: {"filename": "<name>", "contentType": "<mime>", "tier": "<tier>"}
)
Content type guidance: Use the correct MIME type for the file. Common types:
text/csv, application/json, text/plain for data filesapplication/pdf for PDFsimage/png, image/jpeg for imagesapplication/zip for archivesapplication/octet-stream as a fallback for unknown types
The response contains uploadUrl (temporary, 1hr TTL) and publicUrl (permanent for 6 months).
4. Upload the file via curl
Use Bash to PUT the file to the returned uploadUrl:
curl -s -X PUT "<uploadUrl>" -H "Content-Type: <mime>" --data-binary @/absolute/path/to/file
Critical: Use --data-binary (not -d) to preserve binary content. Use the absolute path.
5. Share the public URL
Present the publicUrl to the user. This URL is publicly accessible immediately and remains live for 6 months.
Listing Previous Uploads
To list uploads for the current wallet:
x402.fetch_with_auth(
url: "https://agentupload.dev/api/x402/uploads",
method: "GET"
)
This uses SIWX (Sign-In With X) authentication, not x402 payment.
Key Details
- No API keys required - payment is the authentication
- Upload URLs expire in 1 hour - upload promptly after buying the slot
- Public URLs last 6 months from purchase date
- Any file type accepted - contentType is advisory for the browser, not a restriction
- Discovery endpoint:
x402.discover_api_endpoints(url: "https://agentupload.dev") if you need to verify endpoints
Common Patterns
Upload a file the user just created:
Skip discovery, go straight to wallet check + buy slot + upload.
Upload multiple files:
Buy separate slots for each file. Slots can be purchased in parallel but uploads must use the correct uploadUrl for each.
User asks to "share" or "send" a file:
Upload it and present the public URL. The URL can be shared anywhere.
Error Handling
- Insufficient balance: Show the deposit link from
get_wallet_info
- File too large for tier: Suggest the next tier up
- Upload URL expired: Buy a new slot (the previous payment is non-refundable)
- curl fails: Verify the file path exists and the uploadUrl is correctly quoted
