Buy an upload slot
Buy an upload slot. Agent uploads file via returned URL.
5000 (raw units)
price
310
calls / 30d
32
unique payers
2026-09-18
updated
Provider
stableupload.dev · discovered, not yet claimed by its owner
Payment (x402 accepts[])
[
{
"scheme": "exact",
"network": "eip155:8453",
"payTo": "0x06dFF3c8380b5D1799874adA903fc3422882FD6f",
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"amount": "5000",
"maxTimeoutSeconds": 300
},
{
"scheme": "exact",
"network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
"payTo": "95xcrFtRVn2fkoAKiCUKxPpTc1GN8MTyonVwLFfJfzux",
"asset": "EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",
"amount": "5000",
"maxTimeoutSeconds": 300
}
]Output schema
{
"bazaar": {
"info": {
"input": {
"body": {
"contentType": "text/plain",
"filename": "quick-note.txt",
"tier": "short-10mb"
},
"bodyType": "json",
"method": "POST",
"type": "http"
},
"output": {
"example": {
"curlExample": "curl -X POST \"https://stableupload-prod.s3.us-east-1.amazonaws.com/\" -F \"key=uploads/2s42wjsk3a/quick-note.txt\" -F \"Content-Type=text/plain\" -F \"x-amz-algorithm=AWS4-HMAC-SHA256\" -F \"x-amz-credential=AKIAEXAMPLE/20260425/us-east-1/s3/aws4_request\" -F \"x-amz-date=20260425T160000Z\" -F \"policy=base64-policy\" -F \"x-amz-signature=hex-signature\" -F \"[email protected];type=text/plain\"",
"expiresAt": "2026-05-02T16:00:00.000Z",
"maxSize": 10485760,
"postFields": {
"Content-Type": "text/plain",
"key": "uploads/2s42wjsk3a/quick-note.txt",
"policy": "base64-policy",
"x-amz-algorithm": "AWS4-HMAC-SHA256",
"x-amz-credential": "AKIAEXAMPLE/20260425/us-east-1/s3/aws4_request",
"x-amz-date": "20260425T160000Z",
"x-amz-signature": "hex-signature"
},
"postUrl": "https://stableupload-prod.s3.us-east-1.amazonaws.com/",
"publicUrl": "https://f.stableupload.dev/2s42wjsk3a/quick-note.txt",
"uploadId": "2s42wjsk3a",
"uploadMethod": "post",
"uploadUrl": "https://stableupload-prod.s3.us-east-1.amazonaws.com/",
"uploadUrlExpiresAt": "2026-04-25T16:15:00.000Z"
},
"type": "json"
}
},
"schema": {
"$schema": "https://json-schema.org/draft/2020-12/schema",
"properties": {
"input": {
"additionalProperties": false,
"properties": {
"body": {
"$schema": "https://json-schema.org/draft/2020-12/schema",
"additionalProperties": false,
"properties": {
"contentType": {
"description": "MIME type of the file (e.g. image/png, video/mp4)",
"maxLength": 255,
"minLength": 1,
"type": "string"
},
"filename": {
"description": "Name of the file to upload",
"maxLength": 512,
"minLength": 1,
"type": "string"
},
"policyTtlSeconds": {
"description": "Optional upload URL/form expiration in seconds, 60-86400. Use longer TTLs only when reserving an output slot for a downstream service.",
"maximum": 86400,
"minimum": 60,
"type": "integer"
},
"tier": {
"description": "Upload tier. Default 6-month tiers: 10mb ($0.02), 100mb ($0.20), 1gb ($2.00). Short-term 7-day workflow tiers: short-10mb ($0.005), short-100mb ($0.02), short-1gb ($0.10), short-5gb ($0.50, file uploads only).",
"enum": [
"10mb",
"100mb",
"1gb",
"short-10mb",
"short-100mb",
"short-1gb",
"short-5gb"
],
"type": "string"
}
},
"required": [
"filename",
"contentType",
"tier"
],
"type": "object"
},
"bodyType": {
"enum": [
"json",
"form-data",
"text"
],
"type": "string"
},
"method": {
"enum": [
"POST",
"PUT",
"PATCH"
],
"type": "string"
},
"type": {
"const": "http",
"type": "string"
}
},
"required": [
"type",
"method",
"bodyType",
"body"
],
"type": "object"
},
"output": {
"properties": {
"example": {
"$schema": "https://json-schema.org/draft/2020-12/schema",
"additionalProperties": false,
"properties": {
"curlExample": {
"type": "string"
},
"expiresAt": {
"type": "string"
},
"maxSize": {
"type": "number"
},
"postFields": {
"additionalProperties": {
"type": "string"
},
"propertyNames": {
"type": "string"
},
"type": "object"
},
"postUrl": {
"type": "string"
},
"publicUrl": {
"type": "string"
},
"txHash": {
"type": "string"
},
"uploadId": {
"type": "string"
},
"uploadMethod": {
"enum": [
"put",
"post"
],
"type": "string"
},
"uploadUrl": {
"type": "string"
},
"uploadUrlExpiresAt": {
"type": "string"
}
},
"required": [
"uploadId",
"uploadUrl",
"uploadMethod",
"uploadUrlExpiresAt",
"publicUrl",
"expiresAt",
"maxSize",
"curlExample"
],
"type": "object"
},
"type": {
"type": "string"
}
},
"required": [
"type"
],
"type": "object"
}
},
"required": [
"input"
],
"type": "object"
}
}
}Use it
curl
curl "https://stableupload.dev/api/upload" # -> 402 Payment Required, accepts[] lists how to pay # retry with a PAYMENT-SIGNATURE (or PAYMENT header) once paid
JavaScript
const res = await fetch("https://stableupload.dev/api/upload");
if (res.status === 402) {
const { accepts } = await res.json();
// pay one of accepts[] via an x402 client, then retry with the payment header
}Python
import httpx
res = httpx.get("https://stableupload.dev/api/upload")
if res.status_code == 402:
accepts = res.json()["accepts"]
# pay one of accepts[] via an x402 client, then retry with the payment headerMachine-readable
Everything on this page is also available as clean JSON at /resources/124.json, and this resource appears in /discovery/resources and /discovery/search.