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MnemoSpark Lite File Upload
x402
MnemoSpark Lite File Upload is a paid API for AI agents from api.mnemospark.ai, paid per call via x402, $1.3/call, status unknown (last checked 2026-09-14).
Initiates a wallet-scoped file upload session, returning a presigned S3 URL, completion token, and bearer token for subsequent file listing and downloads; files expire after 30 days.
Price / call$1.3
Success—
StatusUnknown
How this service works
OpenClaw plugin for encrypted cloud backup and agent-driven storage. Circle USDC on Coinbase Base (Ethereum L2) via x402—wallet-native, no API keys.
Output
Returns a presigned S3 upload URL to PUT the file to, a completion token to confirm the upload, and a bearer token for authenticating subsequent listing and download requests. The stored file will automatically expire and be deleted after 30 days.
Example use cases
Example prompt
“Upload my project-report.pdf to MnemoSpark Lite temporary storage so I can share it for the next 30 days — give me back the presigned upload URL and the bearer token I'll need to list and download it later.”
Technical details
Endpoint
POSThttps://api.mnemospark.ai/api/mnemospark-lite/uploadWhen to prefer
Choose this endpoint when you need temporary (30-day), wallet-scoped cloud file storage with a presigned S3 upload flow and need bearer-authenticated access to list and download files afterward. Ideal for agentic workflows where files need to be shared or retrieved later without long-term storage commitments and where payment is handled via x402/USDC.
Side effects
- Payment not provided or insufficient USDC (402 Payment Required)
- Wallet not authorized or invalid wallet address (401 Unauthorized)
- File size exceeds allowed limit (413 Payload Too Large)
- Presigned URL generation failure due to S3 backend error (500 Internal Server Error)
- Request malformed or missing required fields (400 Bad Request)
- Rate limit exceeded for wallet (429 Too Many Requests)
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Output
Schema · Response
{
"type": "json",
"example": {
"data": {
"maxSize": 100000000,
"siteUrl": null,
"uploadId": "abc123",
"expiresAt": "2026-05-23T12:00:00Z",
"publicUrl": null,
"uploadUrl": "https://s3-presigned.example/...",
"curlExample": "curl -X PUT --data-binary @\"example.pdf\" ...",
"completion_token": "opaque-token",
"list_scope_bearer": "opaque-bearer"
},
"success": true,
"metadata": {
"price": "$0.02",
"network": "eip155:8453",
"payment": {
"status": "verified",
"success": true,
"transactionHash": null
},
"protocol": "x402"
}
}
}Tags
x402
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