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img402.dev Upload Token
x402
img402.dev Upload Token is a paid API for AI agents from img402.dev, paid per call via x402, $0.01/call, status unknown (last checked 2026-09-14).
Pay $0.01 USDC on Base to receive a temporary 10-minute upload token for authenticating image uploads
Price / call$0.01
Success—
StatusUnknown
How this service works
Pay $0.01 USDC to get an upload token for a PERMANENT image (no expiration). Use the returned token to upload via: curl -X POST https://img402.dev/api/upload -H 'X-Upload-Token: TOKEN' -F image=@file.png — The upload returns {url, id, contentType, sizeBytes, expiresAt: null}. Permanent images are retained for the life of the service; if we ever shut down, we will give at least 90 days notice. Supports PNG, JPEG, GIF, WebP up to 10MB. (Images 1MB or under are free AND permanent via POST /api/free — pay only for 1-10MB permanence.)
Output
Returns a short-lived upload token (valid for 10 minutes) and an ISO 8601 expiration timestamp. The token should be passed as the X-Upload-Token header when making the actual image upload request to img402.dev.
Example use cases
Automated proof-of-work image archival
“Store this screenshot as proof for our audit trail — pay the Base fee and get the upload token so you can host it on img402 for the next year.”
Agentic workflow image processing
“We need to process and upload these product photos through our pipeline — can you grab upload tokens for each one by paying the USDC fees on Base?”
Decentralized content backup system
“Back up these memes and documents to img402 for long-term storage — pay for the upload tokens and handle the whole thing without asking me again.”
Technical details
Endpoint
POSThttps://img402.dev/api/upload/tokenWhen to prefer
Use this endpoint as the first step before uploading an image to img402.dev. It is required to obtain the X-Upload-Token credential that gates the actual upload. Choose this when your workflow involves programmatic image hosting paid with USDC on Base, especially for agentic pipelines that need a crypto-native, permissionless image storage solution with 1-year retention.
Side effects
- Payment not received or insufficient USDC — token not issued
- Payment on wrong network (not Base) — rejected
- Request malformed or missing required fields — 400 error
- Token expires after 10 minutes if not used — must request new token
- Rate limiting or service unavailability — 5xx error
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Output
Schema · Response
{
"type": "json",
"example": {
"token": "a1b2c3d4e5f6...",
"expiresAt": "2026-02-08T01:00:00.000Z"
}
}Tags
x402
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